Move included examples to their own repositories
Move examples (digital_thermometer and uart_echo) to their own git repositories. Later they can be re-added via git submodules, once this project has been published. Signed-off-by: Collin J. Doering <collin.doering@rekahsoft.ca>
This commit is contained in:
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##########------------------------------------------------------##########
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########## Project-specific Details ##########
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########## Check these every time you start a new project ##########
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##########------------------------------------------------------##########
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MCU = atmega328p
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F_CPU = 8000000UL
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BAUD = 9600
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## Also try BAUD = 19200 or 38400 if you're feeling lucky.
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## A directory for common include files and the simple USART library.
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## If you move either the current folder or the Library folder, you'll
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## need to change this path to match.
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#LIBDIR = ../../AVR-Programming-Library
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##########------------------------------------------------------##########
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########## Programmer Defaults ##########
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########## Set up once, then forget about it ##########
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########## (Can override. See bottom of file.) ##########
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##########------------------------------------------------------##########
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PROGRAMMER_TYPE = avrisp
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# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
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PROGRAMMER_ARGS = -b 19200 -P /dev/ttyUSB0
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##########------------------------------------------------------##########
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########## Program Locations ##########
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########## Won't need to change if they're in your PATH ##########
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##########------------------------------------------------------##########
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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AVRSIZE = avr-size
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AVRDUDE = avrdude
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##########------------------------------------------------------##########
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########## Makefile Magic! ##########
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########## Summary: ##########
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########## We want a .hex file ##########
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########## Compile source files into .elf ##########
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########## Convert .elf file into .hex ##########
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########## You shouldn't need to edit below. ##########
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##########------------------------------------------------------##########
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## The name of your project (without the .c)
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# TARGET = blinkLED
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## Or name it automatically after the enclosing directory
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TARGET = $(lastword $(subst /, ,$(CURDIR)))
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# Object files: will find all .c/.h files in current directory
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# and in LIBDIR. If you have any other (sub-)directories with code,
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# you can add them in to SOURCES below in the wildcard statement.
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SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
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OBJECTS=$(SOURCES:.c=.o)
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HEADERS=$(SOURCES:.c=.h)
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## Compilation options, type man avr-gcc if you're curious.
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# Removed "-I$(LIBDIR)" from end of CPPFLAGS
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CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I.
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CFLAGS = -Os -g -std=gnu99 -Wall
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## Use short (8-bit) data types
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CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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## Splits up object files per function
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CFLAGS += -ffunction-sections -fdata-sections
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LDFLAGS = -Wl,-Map,$(TARGET).map
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## Optional, but often ends up with smaller code
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LDFLAGS += -Wl,--gc-sections
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## Relax shrinks code even more, but makes disassembly messy
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## LDFLAGS += -Wl,--relax
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## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm ## for floating-point printf
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## LDFLAGS += -Wl,-u,vfprintf -lprintf_min ## for smaller printf
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TARGET_ARCH = -mmcu=$(MCU)
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## Explicit pattern rules:
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## To make .o files from .c files
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%.o: %.c $(HEADERS) Makefile
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$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
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$(TARGET).elf: $(OBJECTS)
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$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
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%.hex: %.elf
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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%.eeprom: %.elf
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$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
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%.lst: %.elf
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$(OBJDUMP) -S $< > $@
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## These targets don't have files named after them
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.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
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all: $(TARGET).hex
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debug:
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@echo
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@echo "Source files:" $(SOURCES)
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@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
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@echo
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# Optionally create listing file from .elf
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# This creates approximate assembly-language equivalent of your code.
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# Useful for debugging time-sensitive bits,
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# or making sure the compiler does what you want.
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disassemble: $(TARGET).lst
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disasm: disassemble
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# Optionally show how big the resulting program is
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size: $(TARGET).elf
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$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
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clean:
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rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
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$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
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$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
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$(TARGET).eeprom
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squeaky_clean:
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rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
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##########------------------------------------------------------##########
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########## Programmer-specific details ##########
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########## Flashing code to AVR using avrdude ##########
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##########------------------------------------------------------##########
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flash: $(TARGET).hex
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
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## An alias
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program: flash
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flash_eeprom: $(TARGET).eeprom
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
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avrdude_terminal:
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
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## If you've got multiple programmers that you use,
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## you can define them here so that it's easy to switch.
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## To invoke, use something like `make flash_arduinoISP`
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flash_usbtiny: PROGRAMMER_TYPE = usbtiny
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flash_usbtiny: PROGRAMMER_ARGS = # USBTiny works with no further arguments
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flash_usbtiny: flash
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flash_usbasp: PROGRAMMER_TYPE = usbasp
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flash_usbasp: PROGRAMMER_ARGS = # USBasp works with no further arguments
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flash_usbasp: flash
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flash_arduinoISP: PROGRAMMER_TYPE = avrisp
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flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0
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## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
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flash_arduinoISP: flash
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flash_109: PROGRAMMER_TYPE = avr109
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flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
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flash_109: flash
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##########------------------------------------------------------##########
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########## Fuse settings and suitable defaults ##########
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##########------------------------------------------------------##########
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## Mega 48, 88, 168, 328 default values
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LFUSE = 0x62
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HFUSE = 0xdf
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EFUSE = 0x00
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## Generic
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FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
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fuses:
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
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$(PROGRAMMER_ARGS) $(FUSE_STRING)
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show_fuses:
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$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv
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## Called with no extra definitions, sets to defaults
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set_default_fuses: FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
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set_default_fuses: fuses
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## Set the fuse byte for full-speed mode
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## Note: can also be set in firmware for modern chips
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set_fast_fuse: LFUSE = 0xE2
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set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m
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set_fast_fuse: fuses
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## Set the EESAVE fuse byte to preserve EEPROM across flashes
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set_eeprom_save_fuse: HFUSE = 0xD7
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set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
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set_eeprom_save_fuse: fuses
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## Clear the EESAVE fuse byte
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clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
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clear_eeprom_save_fuse: fuses
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/**
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* (C) Copyright Collin J. Doering 2015
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file ansi_escapes.h
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* @author Collin J. Doering <collin.doering@rekahsoft.ca>
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* @date Oct 9, 2015
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* @brief Macros to ease writing ANSI escapes.
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*/
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#define CSI "\e[" ///< Control Sequence Introducer
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#define CUU(n) CSI #n "A" ///< Cursor up
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#define CUD(n) CSI #n "B" ///< Cursor down
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#define CUF(n) CSI #n "C" ///< Cursor forward
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#define CUB(n) CSI #n "D" ///< Cursor backward
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#define CNL(n) CSI #n "E" ///< Cursor next line
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#define CPL(n) CSI #n "F" ///< Cursor previous line
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#define CHA(n) CSI #n "G" ///< Cursor horizontal absolute
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#define CUP(n,m) CSI #n ";" #m "H" ///< Cursor position
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#define ED(n) CSI #n "J" ///< Erase display
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#define EL(n) CSI #n "K" ///< Erase in line
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#define SU(n) CSI #n "S" ///< Scroll up
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#define SD(n) CSI #n "T" ///< Scroll down
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#define HVP(n,m) CSI #n ";" #m "f" ///< Horizontal and vertical position
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// #define SGR(n,m) CSI #n #m ///< Select graphic rendition
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#define AUX_ON CSI "5i" ///< AUX port on
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#define AUX_OFF CSI "4i" ///< AUX port off
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// #define DSR CSI "6 n" ///< Device status report
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#define SCP CSI "s" ///< Save cursor position
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#define RCP CSI "u" ///< Restore cursor position
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#define HIDE_CURSOR CSI "?25l" ///< DECTCEM: hide cursor
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#define SHOW_CURSOR CSI "?25h" ///< DECTCEM: show cursor
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/**
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* (C) Copyright Collin J. Doering 2015
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* File: digital_thermometer.c
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* Author: Collin J. Doering <collin.doering@rekahsoft.ca>
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* Date: Oct 28, 2015
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*/
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/*---------.
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| Includes |
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`---------*/
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/power.h>
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#include <util/delay.h>
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#include <stdlib.h>
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#include "lcdLib.h"
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#include "ansi_escapes.h"
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void initADC(void) {
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ADMUX |= (1 << REFS0); // reference voltage on AVCC
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ADCSRA |= (1 << ADPS2) | (1 << ADPS1); // ADC prescaler 64
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ADCSRA |= (1 << ADEN); // Enable ADC
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ADCSRA |= (1 << ADATE); // Auto trigger enable
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ADCSRA |= (1 << ADSC); // Start first conversion
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}
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int main(void) {
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clock_prescale_set(clock_div_1);
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initLCD();
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initADC();
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hideCursor();
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writeStringToLCD("Temperature: ");
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saveCursorPosition();
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while (1) {
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float v = ADC * (5000 / 1024);
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int8_t t = (int8_t) ((v - 500) / 10);
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char str[5];
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uint8_t i = 1, sigDig = 0;
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if (t < 0) {
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str[0] = '-';
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t *= -1;
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} else {
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str[0] = '+';
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}
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for (uint8_t j = 100; j >= 1; j /= 10) {
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uint8_t digit = (uint8_t) (t / j);
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if (!sigDig) {
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if (digit != 0) {
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sigDig = 1;
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str[i++] = digit + 0x30;
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} else {
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str[i++] = ' ';
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}
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} else {
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str[i++] = digit + 0x30;
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}
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t = t - digit*j;
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}
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str[i] = '\0';
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writeStringToLCD(str);
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writeCharToLCD(0xdf);
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writeStringToLCD("C");
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restoreCursorPosition();
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_delay_ms(16);
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}
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return 0;
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}
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@ -1,969 +0,0 @@
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/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* File: lcdLib.c
|
||||
* Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* Date: Sep 29, 2015
|
||||
*/
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||||
|
||||
// Includes -----------------------------------------------------------------------------------
|
||||
#include <math.h>
|
||||
#include <avr/io.h>
|
||||
#include <util/delay.h>
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||||
|
||||
#include "lcdLib.h"
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||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Static global variables
|
||||
|
||||
static volatile uint8_t currentLineNum;
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static volatile uint8_t currentLineChars;
|
||||
|
||||
static volatile uint8_t saveCursorLineNum;
|
||||
static volatile uint8_t saveCursorLineChars;
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||||
|
||||
static volatile uint8_t lcdState;
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||||
|
||||
static const uint8_t lineBeginnings[LCD_NUMBER_OF_LINES] = { LCD_LINE_BEGINNINGS };
|
||||
|
||||
//---------------------------------------------------------------------------------------------
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||||
// Static functions
|
||||
|
||||
/*
|
||||
Bring LCD_ENABLE line high, wait for LCD_ENABLE_HIGH_DELAY; then bring LCD_ENABLE line low
|
||||
and wait for LCD_ENABLE_LOW_DELAY.
|
||||
|
||||
Note: LCD_ENABLE, LCD_ENABLE_HIGH_DELAY, and LCD_ENABLE_LOW_DELAY must be defined in lcdLibConfig.h
|
||||
*/
|
||||
static void clkLCD(void) {
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(LCD_ENABLE_HIGH_DELAY);
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(LCD_ENABLE_LOW_DELAY);
|
||||
}
|
||||
|
||||
/*
|
||||
Wait until LCD_BF (busy flag) is cleared (low).
|
||||
*/
|
||||
static void loop_until_LCD_BF_clear(void) {
|
||||
uint8_t bf;
|
||||
|
||||
LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0
|
||||
LCD_RW_PORT |= (1 << LCD_RW); // RW=1
|
||||
|
||||
// Set LCD_BF as input
|
||||
LCD_DBUS7_DDR &= ~(1 << LCD_BF);
|
||||
|
||||
do {
|
||||
bf = 0;
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
|
||||
bf |= (LCD_DBUS7_PIN & (1 << LCD_BF));
|
||||
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
|
||||
#ifdef FOUR_BIT_MODE
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
#endif
|
||||
} while (bf);
|
||||
|
||||
#if defined (FOUR_BIT_MODE) || defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
LCD_DBUS7_DDR |= (1 << LCD_DBUS7);
|
||||
LCD_DBUS6_DDR |= (1 << LCD_DBUS6);
|
||||
LCD_DBUS5_DDR |= (1 << LCD_DBUS5);
|
||||
LCD_DBUS4_DDR |= (1 << LCD_DBUS4);
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
LCD_DBUS3_DDR |= (1 << LCD_DBUS3);
|
||||
LCD_DBUS2_DDR |= (1 << LCD_DBUS2);
|
||||
LCD_DBUS1_DDR |= (1 << LCD_DBUS1);
|
||||
LCD_DBUS0_DDR |= (1 << LCD_DBUS0);
|
||||
#endif
|
||||
#else
|
||||
LCD_DBUS_DDR = 0xff; // Reset all LCD_DBUS_PORT pins as outputs
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Given a 8 bit integer, writes the four MSB's (one nibble) to the LCD data bus.
|
||||
|
||||
Note: this is only defined in FOUR_BIT_MODE
|
||||
*/
|
||||
#ifdef FOUR_BIT_MODE
|
||||
static void writeLCDDBusNibble_(uint8_t b) {
|
||||
// Reset data lines to zeros
|
||||
LCD_DBUS7_PORT &= ~(1 << LCD_DBUS7);
|
||||
LCD_DBUS6_PORT &= ~(1 << LCD_DBUS6);
|
||||
LCD_DBUS5_PORT &= ~(1 << LCD_DBUS5);
|
||||
LCD_DBUS4_PORT &= ~(1 << LCD_DBUS4);
|
||||
|
||||
// Write 1's where appropriate on data lines
|
||||
if (b & (1 << 7)) LCD_DBUS7_PORT |= (1 << LCD_DBUS7);
|
||||
if (b & (1 << 6)) LCD_DBUS6_PORT |= (1 << LCD_DBUS6);
|
||||
if (b & (1 << 5)) LCD_DBUS5_PORT |= (1 << LCD_DBUS5);
|
||||
if (b & (1 << 4)) LCD_DBUS4_PORT |= (1 << LCD_DBUS4);
|
||||
|
||||
// Pulse the enable line
|
||||
clkLCD();
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
Given an 8 bit integer, writes it to the LCD data bus, regardless of its
|
||||
configuration (default 8-bit mode, 8-bit arbitrary pin mode and 4-bit mode). In the default
|
||||
8-bit mode and EIGHT_BIT_ARBITRARY_PIN_MODE, the given data is written in one cycle using the
|
||||
writeLCDDBusByte_ function. In FOUR_BIT_MODE however, the given data is written in two cycles
|
||||
using two successive calls to the writeLCDDBusNibble_ function.
|
||||
|
||||
This function does not ensure the LCD is ready to accept new data and thus needs to
|
||||
be handled by the caller.
|
||||
*/
|
||||
static void writeLCDDBusByte_(uint8_t b) {
|
||||
#ifdef FOUR_BIT_MODE
|
||||
writeLCDDBusNibble_(b);
|
||||
writeLCDDBusNibble_(b << 4);
|
||||
#elif defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
// Reset data lines to zeros
|
||||
LCD_DBUS7_PORT &= ~(1 << LCD_DBUS7);
|
||||
LCD_DBUS6_PORT &= ~(1 << LCD_DBUS6);
|
||||
LCD_DBUS5_PORT &= ~(1 << LCD_DBUS5);
|
||||
LCD_DBUS4_PORT &= ~(1 << LCD_DBUS4);
|
||||
LCD_DBUS3_PORT &= ~(1 << LCD_DBUS3);
|
||||
LCD_DBUS2_PORT &= ~(1 << LCD_DBUS2);
|
||||
LCD_DBUS1_PORT &= ~(1 << LCD_DBUS1);
|
||||
LCD_DBUS0_PORT &= ~(1 << LCD_DBUS0);
|
||||
|
||||
// Write 1's where appropriate on data lines
|
||||
if (b & (1 << 7)) LCD_DBUS7_PORT |= (1 << LCD_DBUS7);
|
||||
if (b & (1 << 6)) LCD_DBUS6_PORT |= (1 << LCD_DBUS6);
|
||||
if (b & (1 << 5)) LCD_DBUS5_PORT |= (1 << LCD_DBUS5);
|
||||
if (b & (1 << 4)) LCD_DBUS4_PORT |= (1 << LCD_DBUS4);
|
||||
if (b & (1 << 3)) LCD_DBUS3_PORT |= (1 << LCD_DBUS3);
|
||||
if (b & (1 << 2)) LCD_DBUS2_PORT |= (1 << LCD_DBUS2);
|
||||
if (b & (1 << 1)) LCD_DBUS1_PORT |= (1 << LCD_DBUS1);
|
||||
if (b & (1 << 0)) LCD_DBUS0_PORT |= (1 << LCD_DBUS0);
|
||||
|
||||
clkLCD();
|
||||
#else
|
||||
LCD_DBUS_PORT = b;
|
||||
clkLCD();
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Given a 8 bit integer representing a LCD instruction, sends it to the LCD display.
|
||||
|
||||
Sets RS=RW=0 and writes the given 8 bit integer to the LCD databus.
|
||||
|
||||
Note that this function does not ensure the LCD is ready to accept a new instruction and thus
|
||||
needs to be handled by the caller.
|
||||
*/
|
||||
static void writeLCDInstr_(uint8_t instr) {
|
||||
LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0
|
||||
LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0
|
||||
|
||||
writeLCDDBusByte_(instr);
|
||||
}
|
||||
|
||||
/*
|
||||
Given a 8 bit integer representing a LCD instruction, waits until the LCD is ready and sends
|
||||
the instruction.
|
||||
*/
|
||||
static inline void writeLCDInstr(uint8_t instr) {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeLCDInstr_(instr);
|
||||
}
|
||||
|
||||
/*
|
||||
Sets RS=1, RW=0 and accepts a char (8 bit) and outputs it to the current cursor position of
|
||||
the LCD. In the default 8-bit mode and EIGHT_BIT_ARBITRARY_PIN_MODE, the given data is
|
||||
written in one cycle using the writeLCDDBusByte_ function. In FOUR_BIT_MODE however, the given
|
||||
data is written in two cycles using two successive calls to the writeLCDDBusNibble_ function.
|
||||
*/
|
||||
static void writeCharToLCD_(char c) {
|
||||
LCD_RS_PORT |= (1 << LCD_RS); // RS=1
|
||||
LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0
|
||||
|
||||
writeLCDDBusByte_(c);
|
||||
}
|
||||
|
||||
static uint8_t readLCDDBusByte_(void) {
|
||||
LCD_RS_PORT |= (1 << LCD_RS); // RS=1
|
||||
LCD_RW_PORT |= (1 << LCD_RW); // RW=1
|
||||
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
|
||||
// Read data
|
||||
char c = 0;
|
||||
#if defined(FOUR_BIT_MODE)
|
||||
if (LCD_DBUS7_PIN & (1 << LCD_DBUS7)) c |= (1 << 7);
|
||||
if (LCD_DBUS6_PIN & (1 << LCD_DBUS6)) c |= (1 << 6);
|
||||
if (LCD_DBUS5_PIN & (1 << LCD_DBUS5)) c |= (1 << 5);
|
||||
if (LCD_DBUS4_PIN & (1 << LCD_DBUS4)) c |= (1 << 4);
|
||||
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
|
||||
if (LCD_DBUS7_PIN & (1 << LCD_DBUS7)) c |= (1 << 3);
|
||||
if (LCD_DBUS6_PIN & (1 << LCD_DBUS6)) c |= (1 << 2);
|
||||
if (LCD_DBUS5_PIN & (1 << LCD_DBUS5)) c |= (1 << 1);
|
||||
if (LCD_DBUS4_PIN & (1 << LCD_DBUS4)) c |= (1 << 0);
|
||||
#elif defined(EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
if (LCD_DBUS7_PIN & (1 << LCD_DBUS7)) c |= (1 << 7);
|
||||
if (LCD_DBUS6_PIN & (1 << LCD_DBUS6)) c |= (1 << 6);
|
||||
if (LCD_DBUS5_PIN & (1 << LCD_DBUS5)) c |= (1 << 5);
|
||||
if (LCD_DBUS4_PIN & (1 << LCD_DBUS4)) c |= (1 << 4);
|
||||
if (LCD_DBUS3_PIN & (1 << LCD_DBUS3)) c |= (1 << 3);
|
||||
if (LCD_DBUS2_PIN & (1 << LCD_DBUS2)) c |= (1 << 2);
|
||||
if (LCD_DBUS1_PIN & (1 << LCD_DBUS1)) c |= (1 << 1);
|
||||
if (LCD_DBUS0_PIN & (1 << LCD_DBUS0)) c |= (1 << 0);
|
||||
#else
|
||||
c = LCD_DBUS_PIN;
|
||||
#endif
|
||||
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
/*
|
||||
Given a character string, and a uint8_t pointer, reads the character string until a
|
||||
non-numerical ASCII character, returning the integer representation of the number read. At
|
||||
the end of the functions execution, the found_num uint8_t* will be updated to indicate how
|
||||
many digits were read. The new_loc char** will be updated with the new parsing position in
|
||||
the string.
|
||||
*/
|
||||
static uint8_t readASCIINumber(char* str, uint8_t* found_num, char** new_loc) {
|
||||
uint8_t nums[3];
|
||||
|
||||
*found_num = 0;
|
||||
while (*str != '\0' && *found_num < 3) {
|
||||
if (*str >= 0x30 && *str <= 0x39) {
|
||||
// Use *str as a number (specified in ASCII)
|
||||
nums[(*found_num)++] = *str - 0x30;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
|
||||
str++;
|
||||
}
|
||||
*new_loc = str;
|
||||
|
||||
uint8_t ret = 0;
|
||||
uint8_t i = *found_num - 1;
|
||||
for (uint8_t fnd = 0; fnd < *found_num; fnd++)
|
||||
ret += nums[fnd] * pow(10, i--);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
Set all pins of LCD_DBUS as outputs
|
||||
*/
|
||||
static inline void setLCDDBusAsOutputs(void) {
|
||||
#if defined (FOUR_BIT_MODE) || defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
LCD_DBUS7_DDR |= (1 << LCD_DBUS7);
|
||||
LCD_DBUS6_DDR |= (1 << LCD_DBUS6);
|
||||
LCD_DBUS5_DDR |= (1 << LCD_DBUS5);
|
||||
LCD_DBUS4_DDR |= (1 << LCD_DBUS4);
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
LCD_DBUS3_DDR |= (1 << LCD_DBUS3);
|
||||
LCD_DBUS2_DDR |= (1 << LCD_DBUS2);
|
||||
LCD_DBUS1_DDR |= (1 << LCD_DBUS1);
|
||||
LCD_DBUS0_DDR |= (1 << LCD_DBUS0);
|
||||
#endif
|
||||
#else
|
||||
LCD_DBUS_DDR = 0xff;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Set all pins of LCD_DBUS as inputs (disabling their output)
|
||||
*/
|
||||
static inline void setLCDDBusAsInputs(void) {
|
||||
#if defined (FOUR_BIT_MODE) || defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
LCD_DBUS7_DDR &= ~(1 << LCD_DBUS7);
|
||||
LCD_DBUS6_DDR &= ~(1 << LCD_DBUS6);
|
||||
LCD_DBUS5_DDR &= ~(1 << LCD_DBUS5);
|
||||
LCD_DBUS4_DDR &= ~(1 << LCD_DBUS4);
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
LCD_DBUS3_DDR &= ~(1 << LCD_DBUS3);
|
||||
LCD_DBUS2_DDR &= ~(1 << LCD_DBUS2);
|
||||
LCD_DBUS1_DDR &= ~(1 << LCD_DBUS1);
|
||||
LCD_DBUS0_DDR &= ~(1 << LCD_DBUS0);
|
||||
#endif
|
||||
#else
|
||||
LCD_DBUS_DDR = 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Set RS=RW=0 and write the CMD_INIT command to the LCD data bus. Note that an appropriate
|
||||
pause must follow before sending new commands to the LCD using writeLCD*_ functions.
|
||||
*/
|
||||
static inline void softwareLCDInitPulse(void) {
|
||||
LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0
|
||||
LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0
|
||||
|
||||
#ifdef FOUR_BIT_MODE
|
||||
writeLCDDBusNibble_(CMD_INIT);
|
||||
#else
|
||||
writeLCDDBusByte_(CMD_INIT);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Library function definitions
|
||||
|
||||
/*
|
||||
Do software initialization as specified by the datasheet
|
||||
*/
|
||||
void initLCD(void) {
|
||||
// Set LCD_RS, LCD_RW and LCD_ENABLE as outputs
|
||||
LCD_RS_DDR |= (1 << LCD_RS);
|
||||
LCD_RW_DDR |= (1 << LCD_RW);
|
||||
LCD_ENABLE_DDR |= (1 << LCD_ENABLE);
|
||||
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
_delay_us(LCD_INIT_DELAY0); // Wait minimum 15ms as per datasheet
|
||||
softwareLCDInitPulse();
|
||||
_delay_us(LCD_INIT_DELAY1); // Wait minimum 4.1ms as per datasheet
|
||||
softwareLCDInitPulse();
|
||||
_delay_us(LCD_INIT_DELAY2); // Wait minimum 100us as per datasheet
|
||||
softwareLCDInitPulse();
|
||||
|
||||
#if defined (FOUR_BIT_MODE)
|
||||
// Function Set (4-bit interface)
|
||||
writeLCDDBusNibble_(CMD_INIT_FOUR_BIT);
|
||||
writeLCDInstr_(CMD_INIT_FOUR_BIT | LCD_LINES | LCD_FONT);
|
||||
#else
|
||||
// Function set (8-bit interface)
|
||||
writeLCDInstr_(INSTR_FUNC_SET | (1 << INSTR_FUNC_SET_DL) | LCD_LINES | LCD_FONT);
|
||||
#endif
|
||||
|
||||
/* BF now can be checked */
|
||||
|
||||
// Set functions of LCD
|
||||
writeLCDInstr(INSTR_DISPLAY); // Display off
|
||||
|
||||
// Clear display
|
||||
writeLCDInstr(CMD_CLEAR_DISPLAY);
|
||||
|
||||
// Increment mode, no shift
|
||||
writeLCDInstr(INSTR_ENTRY_SET | (1 << INSTR_ENTRY_SET_ID));
|
||||
|
||||
// Display on, cursor on, blink off
|
||||
lcdState = (1 << INSTR_DISPLAY_D) | (1 << INSTR_DISPLAY_C);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
/*
|
||||
Given a single character, checks whether its a ASCII escape and does the following:
|
||||
|
||||
- Newline '\n': moves the cursor to the next physical line of the LCD display; if the cursor is on
|
||||
the last line of the display, clears the display and positions the cursor at the top left
|
||||
of the LCD
|
||||
- Carriage return '\r': moves the cursor to the beginning of the current line
|
||||
- Backspace '\b': moves the cursor one position backwards, wrapping to the end of the
|
||||
previous line when at the beginning of a line (other then the first one). A space is then
|
||||
inserted to replace the character at point, without moving the cursor. When the cursor is
|
||||
at the beginning of the first line, does nothing.
|
||||
- Form feed '\f': clears the LCD display and places the cursor at the beginning of the first line.
|
||||
- Alarm '\a': ignored
|
||||
|
||||
Any other character is sent to the LCD display using writeCharToLCD_.
|
||||
*/
|
||||
void writeCharToLCD(char c) {
|
||||
switch (c) {
|
||||
case '\n': // Line feed
|
||||
if (currentLineNum == LCD_NUMBER_OF_LINES - 1) {
|
||||
scrollUp(1);
|
||||
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[currentLineNum]);
|
||||
} else {
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[++currentLineNum]);
|
||||
}
|
||||
break;
|
||||
case '\a': // Alarm
|
||||
break;
|
||||
case '\b': // Backspace (non-destructive)
|
||||
if (currentLineChars == 0 && currentLineNum == 0) {
|
||||
// At first line, first column; there is no where to move; do nothing
|
||||
break;
|
||||
} else if (currentLineChars == 0) {
|
||||
// At beginning of line, need to move the end of previous line
|
||||
currentLineChars = LCD_CHARACTERS_PER_LINE - 1;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[--currentLineNum] + currentLineChars));
|
||||
} else {
|
||||
// OK, simply go back one character
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + --currentLineChars));
|
||||
}
|
||||
|
||||
break;
|
||||
case '\r': // Carriage return
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[currentLineNum]);
|
||||
currentLineChars = 0;
|
||||
break;
|
||||
case '\f': // Form feed
|
||||
clearDisplay();
|
||||
break;
|
||||
default: // Printable character
|
||||
if (currentLineChars == LCD_CHARACTERS_PER_LINE - 1 && currentLineNum == LCD_NUMBER_OF_LINES - 1) {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeCharToLCD_(c);
|
||||
|
||||
scrollUp(1);
|
||||
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[currentLineNum]);
|
||||
} else if (currentLineChars == LCD_CHARACTERS_PER_LINE - 1) {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeCharToLCD_(c);
|
||||
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[++currentLineNum]);
|
||||
} else {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeCharToLCD_(c);
|
||||
currentLineChars++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void writeStringToLCD(char* str) {
|
||||
while (*str != '\0') {
|
||||
#ifdef LCD_ANSI_ESCAPE_ENABLE
|
||||
// Check for ANSI CSI (Control Sequence Introducer)
|
||||
if (*str == '\e') {
|
||||
if (*(++str) != '\0' && *str == '[') {
|
||||
char* str_ref = ++str;
|
||||
switch (*str) {
|
||||
case 's': // SCP - Save cursor position
|
||||
saveCursorPosition();
|
||||
return;
|
||||
case 'u': // RCP - Restore cursor position
|
||||
restoreCursorPosition();
|
||||
return;
|
||||
case '?': // DECTCEM
|
||||
if (*(++str_ref) != '\0' && *str_ref == '2') {
|
||||
if (*(++str_ref) != '\0' && *str_ref == '5') {
|
||||
if (*(++str_ref) != '\0') {
|
||||
if (*str_ref == 'l') {
|
||||
hideCursor();
|
||||
} else if (*str_ref == 'h') {
|
||||
showCursor();
|
||||
} else {
|
||||
// Invalid escape
|
||||
}
|
||||
} // Invalid escape (early termination)
|
||||
} // Invalid escape
|
||||
} // Invalid escape
|
||||
return;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
// Read optional variable length number in ASCII (0x30 - 0x3f) where 0x3a - 0x3f are
|
||||
// ignored (they are used as flags by some terminals)
|
||||
uint8_t fnd0;
|
||||
uint8_t num0 = readASCIINumber(str, &fnd0, &str);
|
||||
|
||||
// Read optional (semicolon followed by optional variable length number)
|
||||
uint8_t fnd1;
|
||||
uint8_t num1;
|
||||
if (*str != '\0' && *str == ';') {
|
||||
num1 = readASCIINumber(++str, &fnd1, &str);
|
||||
|
||||
// Read control character (between 0x40 - 0x7e) for two argument sequences
|
||||
switch (*str) {
|
||||
case 'f': // HVP - Horizontal and vertical position
|
||||
case 'H': // CUP - Cursor position
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
num1 = fnd1 ? num1 : 1;
|
||||
setCursorPosition(num0, num1);
|
||||
break;
|
||||
default: // Invalid control character
|
||||
break;
|
||||
}
|
||||
} else if (*str != '\0') {
|
||||
// Read control character (between 0x40 - 0x7e) for single argument sequences
|
||||
switch (*str) {
|
||||
case 'A': // CUU - Cursor up
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorUp(num0);
|
||||
break;
|
||||
case 'B': // CUD - Cursor down
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorDown(num0);
|
||||
break;
|
||||
case 'C': // CUF - Cursor forward
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorForward(num0);
|
||||
break;
|
||||
case 'D': // CUB - Cursor back
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorBackward(num0);
|
||||
break;
|
||||
case 'E': // CNL - Cursor next line
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorNextLine(num0);
|
||||
break;
|
||||
case 'F': // CPL - Cursor previous line
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorPreviousLine(num0);
|
||||
break;
|
||||
case 'G': // CHA - Cursor horizontal absolute
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorToColumn(num0);
|
||||
break;
|
||||
case 'J': // ED - Erase display
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
eraseDisplay(num0);
|
||||
break;
|
||||
case 'K': // EL - Erase in line
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
eraseInline(num0);
|
||||
break;
|
||||
case 'S': // SU - Scroll up
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
scrollUp(num0);
|
||||
break;
|
||||
case 'T': // SD Scroll down
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
scrollDown(num0);
|
||||
break;
|
||||
case 'm': // SGR - Select graphic rendition (single optional argument)
|
||||
break;
|
||||
case ';': // SGR - Select graphic rendition (multiple arguments)
|
||||
if (fnd0) {
|
||||
while (fnd0) {
|
||||
readASCIINumber(++str, &fnd0, &str);
|
||||
if (fnd0) {
|
||||
if (*str == 'm') {
|
||||
break; // Valid SGR
|
||||
} else if (*str == ';') {
|
||||
continue; // More SGR parameters yet
|
||||
} else {
|
||||
break; // Invalid escape
|
||||
}
|
||||
} else {
|
||||
// Invalid escape; expected SGR parameter
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// Invalid escape; expected first SGR parameter but none given
|
||||
}
|
||||
break;
|
||||
case 'n': // DSR - Device status report
|
||||
if (fnd0 && num0 == 6) {
|
||||
// Valid DSR
|
||||
} else {
|
||||
// Invalid DSR
|
||||
}
|
||||
break;
|
||||
default: // Invalid control character
|
||||
writeCharToLCD(*str);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
return; // Invalid escape sequence (terminated early)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
writeCharToLCD(*str);
|
||||
}
|
||||
|
||||
str++;
|
||||
#else
|
||||
writeCharToLCD(*(str++));
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// LCD command functions (all have associated ANSI escape)
|
||||
|
||||
/*
|
||||
Writes the CMD_CLEAR_DISPLAY command to the LCD using writeLCDINSTR, and clears the local
|
||||
char and line counters.
|
||||
*/
|
||||
void clearDisplay(void) {
|
||||
writeLCDInstr(CMD_CLEAR_DISPLAY);
|
||||
|
||||
// Reset line and char number tracking
|
||||
currentLineNum = 0;
|
||||
currentLineChars = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
Writes the CMD_RETURN_HOME command to the LCD using writeLCDInstr, and clears the local char
|
||||
and line counters.
|
||||
*/
|
||||
void returnHome(void) {
|
||||
writeLCDInstr(CMD_RETURN_HOME);
|
||||
|
||||
// Reset line and char number tracking
|
||||
currentLineNum = 0;
|
||||
currentLineChars = 0;
|
||||
}
|
||||
|
||||
void getCursorPosition(uint8_t* row, uint8_t* column) {
|
||||
*row = currentLineNum + 1;
|
||||
*column = currentLineChars + 1;
|
||||
}
|
||||
|
||||
void setCursorPosition(uint8_t row, uint8_t column) {
|
||||
// Set currentLineNum and currentLineChars
|
||||
currentLineNum = row ? row - 1 : 0;
|
||||
currentLineChars = column ? column - 1 : 0;
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorUp(uint8_t n) {
|
||||
if (n < currentLineNum + 1) {
|
||||
currentLineNum -= n;
|
||||
} else {
|
||||
currentLineNum = 0;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorDown(uint8_t n) {
|
||||
if (n + currentLineNum < LCD_NUMBER_OF_LINES) {
|
||||
currentLineNum += n;
|
||||
} else {
|
||||
currentLineNum = LCD_NUMBER_OF_LINES - 1;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorForward(uint8_t n) {
|
||||
if (n + currentLineChars < LCD_CHARACTERS_PER_LINE) {
|
||||
currentLineChars += n;
|
||||
} else {
|
||||
currentLineChars = LCD_CHARACTERS_PER_LINE - 1;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorBackward(uint8_t n) {
|
||||
if (n < currentLineChars + 1) {
|
||||
currentLineChars -= n;
|
||||
} else {
|
||||
currentLineChars = 0;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorNextLine(uint8_t n) {
|
||||
currentLineChars = 0;
|
||||
|
||||
if (n + currentLineNum < LCD_NUMBER_OF_LINES) {
|
||||
currentLineNum += n;
|
||||
} else {
|
||||
currentLineNum = LCD_NUMBER_OF_LINES - 1;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorPreviousLine(uint8_t n) {
|
||||
currentLineChars = 0;
|
||||
|
||||
if (n < currentLineNum + 1) {
|
||||
currentLineNum -= n;
|
||||
} else {
|
||||
currentLineNum = 0;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorToColumn(uint8_t n) {
|
||||
if (n <= LCD_CHARACTERS_PER_LINE) {
|
||||
currentLineChars = n ? n - 1 : 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
} // else index out of range (off screen column)
|
||||
}
|
||||
|
||||
void eraseDisplay(uint8_t n) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
switch (n) {
|
||||
case 0: // Clear from cursor to end of screen
|
||||
{
|
||||
uint8_t len = (LCD_NUMBER_OF_LINES - old_row)*LCD_CHARACTERS_PER_LINE + (LCD_CHARACTERS_PER_LINE - old_column);
|
||||
for (uint8_t i = 0; i < len; i++)
|
||||
writeCharToLCD(' ');
|
||||
|
||||
// Write last char without scrolling
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(' ');
|
||||
break;
|
||||
}
|
||||
case 1: // Clear from cursor to beginning of screen
|
||||
{
|
||||
uint8_t len = (old_row - 1)*LCD_CHARACTERS_PER_LINE + old_column;
|
||||
returnHome();
|
||||
for (uint8_t i = 0; i < len; i++)
|
||||
writeCharToLCD(' ');
|
||||
|
||||
// Write last char without scrolling
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(' ');
|
||||
break;
|
||||
}
|
||||
case 2: // Clear entire screen
|
||||
clearDisplay();
|
||||
break;
|
||||
default: // Invalid argument; do nothing
|
||||
break;
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
|
||||
void eraseInline(uint8_t n) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
switch (n) {
|
||||
case 0: // Clear from cursor to end of line
|
||||
for (uint8_t i = old_column; i <= LCD_CHARACTERS_PER_LINE; i++)
|
||||
writeCharToLCD(' ');
|
||||
break;
|
||||
case 1: // Clear from cursor to beginning of line
|
||||
setCursorPosition(old_row, 1);
|
||||
for (uint8_t i = 1; i <= old_column; i++)
|
||||
writeCharToLCD(' ');
|
||||
break;
|
||||
case 2: // Clear entire line
|
||||
setCursorPosition(old_row, 1);
|
||||
for (uint8_t i = 1; i <= LCD_CHARACTERS_PER_LINE; i++) {
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(' ');
|
||||
}
|
||||
break;
|
||||
default: // Invalid argument; do nothing
|
||||
return;
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
|
||||
void scrollUp(uint8_t n) {
|
||||
#if LCD_NUMBER_OF_LINES == 1
|
||||
clearDisplay();
|
||||
#else
|
||||
if (n >= LCD_NUMBER_OF_LINES) {
|
||||
clearDisplay();
|
||||
} else {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
uint8_t len = (LCD_NUMBER_OF_LINES - n)*LCD_CHARACTERS_PER_LINE + 1;
|
||||
char str[len];
|
||||
readCharsFromLCD(n + 1, 1, LCD_NUMBER_OF_LINES, LCD_CHARACTERS_PER_LINE, str, len);
|
||||
setCursorPosition(1, 1); // returnHome();
|
||||
writeStringToLCD(str);
|
||||
|
||||
// Add n newlines to bottom of screen
|
||||
for (uint8_t i = 0; i < n; i++) {
|
||||
setCursorPosition(LCD_NUMBER_OF_LINES - i, 1);
|
||||
eraseInline(2);
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void scrollDown(uint8_t n) {
|
||||
#if LCD_NUMBER_OF_LINES == 1
|
||||
clearDisplay();
|
||||
#else
|
||||
if (n >= LCD_NUMBER_OF_LINES) {
|
||||
clearDisplay();
|
||||
} else {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
uint8_t len = (LCD_NUMBER_OF_LINES - n)*LCD_CHARACTERS_PER_LINE + 1;
|
||||
char str[len];
|
||||
readCharsFromLCD(1, 1, LCD_NUMBER_OF_LINES - n, LCD_CHARACTERS_PER_LINE, str, len);
|
||||
|
||||
for (uint8_t column = n + 1, i = 0; column <= LCD_NUMBER_OF_LINES; column++) {
|
||||
setCursorPosition(column , 1);
|
||||
for (uint8_t row = 1; row <= LCD_CHARACTERS_PER_LINE; row++) {
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(str[i++]);
|
||||
}
|
||||
}
|
||||
|
||||
// Add n newlines to top of screen
|
||||
for (uint8_t i = 1; i <= n; i++) {
|
||||
setCursorPosition(i, 1);
|
||||
eraseInline(2);
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void saveCursorPosition() {
|
||||
saveCursorLineNum = currentLineNum;
|
||||
saveCursorLineChars = currentLineChars;
|
||||
}
|
||||
|
||||
void restoreCursorPosition() {
|
||||
currentLineNum = saveCursorLineNum;
|
||||
currentLineChars = saveCursorLineChars;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void hideCursor(void) {
|
||||
lcdState &= ~(1 << INSTR_DISPLAY_C);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void showCursor(void) {
|
||||
lcdState |= (1 << INSTR_DISPLAY_C);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
// Utility functions (with no associated ASCII or ANSI escape)
|
||||
|
||||
void blinkCursorOff(void) {
|
||||
lcdState &= ~(1 << INSTR_DISPLAY_B);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void blinkCursorOn(void) {
|
||||
lcdState |= (1 << INSTR_DISPLAY_B);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void displayOff(void) {
|
||||
lcdState &= ~(1 << INSTR_DISPLAY_D);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void displayOn(void) {
|
||||
lcdState |= (1 << INSTR_DISPLAY_D);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
|
||||
char readCharFromLCD(uint8_t row, uint8_t column) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
setCursorPosition(row, column);
|
||||
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
char c = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
return c;
|
||||
}
|
||||
|
||||
void readLCDLine(uint8_t i, char* str) {
|
||||
readCharsFromLCD(i, 1, i, LCD_CHARACTERS_PER_LINE, str, LCD_CHARACTERS_PER_LINE + 1);
|
||||
}
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Advanced functions for special cases
|
||||
|
||||
void readCharsFromLCD(uint8_t from_row, uint8_t from_column, uint8_t to_row, uint8_t to_column, char* str, uint8_t len) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
setCursorPosition(from_row, from_column);
|
||||
|
||||
for (uint8_t i = 0; i < len - 1 && from_row <= to_row; i++) {
|
||||
if (from_row == LCD_NUMBER_OF_LINES && from_column == LCD_CHARACTERS_PER_LINE) {
|
||||
// Last character on screen
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
*(str++) = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
} else if (from_column == LCD_CHARACTERS_PER_LINE) { // End of line (but not last one)
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
*(str++) = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
from_row += 1;
|
||||
from_column = 1;
|
||||
setCursorPosition(from_row, from_column);
|
||||
} else {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
*(str++) = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
from_column++;
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure array is terminated with null character
|
||||
*str = '\0';
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
setLCDDBusAsOutputs();
|
||||
}
|
||||
|
||||
/*
|
||||
Initialize LCD using the internal reset circuitry.
|
||||
|
||||
Note: This currently only works with 8 bit modes, but is not recommended. Instead use the
|
||||
initLCD function which uses the software initialization method and works for 8-bit
|
||||
modes as well the 4-bit mode.
|
||||
*/
|
||||
void initLCDByInternalReset(void) {
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
// Function set (8-bit interface; 2 lines with 5x7 dot character font)
|
||||
writeLCDInstr_(INSTR_FUNC_SET | (1 << INSTR_FUNC_SET_DL) | (1 << INSTR_FUNC_SET_N));
|
||||
|
||||
writeLCDInstr_(0x0F);
|
||||
writeLCDInstr_(0x06);
|
||||
writeLCDInstr_(CMD_CLEAR_DISPLAY);
|
||||
_delay_ms(LCD_CLEAR_DISPLAY_DELAY);
|
||||
}
|
||||
|
|
@ -1,328 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file lcdLib.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Sep 29, 2015
|
||||
* @brief Functions to initialize, and operate a character LCD.
|
||||
*/
|
||||
|
||||
#ifndef LCD_LIB_H
|
||||
#define LCD_LIB_H
|
||||
|
||||
// Includes -----------------------------------------------------------------------------------
|
||||
#include "lcd_instr.h"
|
||||
#include "lcdLibConfig.h"
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Library function declarations
|
||||
|
||||
/**
|
||||
Initialize the LCD display via software initialization as specified by the datasheet.
|
||||
*/
|
||||
void initLCD(void);
|
||||
|
||||
/**
|
||||
Writes a character to the LCD display at the current cursor position after the LCD display is
|
||||
ready for new data. Allows the following ASCII escapes: '\n', '\r', '\f' and '\b'; ignores
|
||||
ASCII escape '\a'.
|
||||
*/
|
||||
void writeCharToLCD(char);
|
||||
|
||||
/**
|
||||
Writes a string to the LCD starting from the current cursor position.
|
||||
*/
|
||||
void writeStringToLCD(char*);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// LCD command functions (all have associated ANSI escape)
|
||||
|
||||
/**
|
||||
Clears the display and positions the cursor in the top left of the LCD screen.
|
||||
*/
|
||||
void clearDisplay(void);
|
||||
|
||||
/**
|
||||
Brings the cursor the the top left of the LCD screen.
|
||||
*/
|
||||
void returnHome(void);
|
||||
|
||||
/**
|
||||
Gets the current row and column of the LCD cursor and sets given pointers row and column to
|
||||
their respective values. Note indexes start at 1.
|
||||
*/
|
||||
void getCursorPosition(uint8_t* row, uint8_t* column);
|
||||
|
||||
/**
|
||||
Using the given parameters row and column, sets the current row and column occupied by the LCD
|
||||
cursor. Note indexes start at 1.
|
||||
*/
|
||||
void setCursorPosition(uint8_t row, uint8_t column);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions up. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorUp(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions down. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorDown(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions forward. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorForward(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions backwards. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorBackward(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor to the beginning of the line n lines down.
|
||||
*/
|
||||
void moveCursorNextLine(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor to the beginning of the line n lines up.
|
||||
*/
|
||||
void moveCursorPreviousLine(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor to column n. If n is off screen go to the last line.
|
||||
*/
|
||||
void moveCursorToColumn(uint8_t n);
|
||||
|
||||
/**
|
||||
Scroll whole page up by n lines. New lines are added at the bottom.
|
||||
*/
|
||||
void scrollUp(uint8_t n);
|
||||
|
||||
/**
|
||||
Scroll whole page down by n lines. New lines are added at the top.
|
||||
*/
|
||||
void scrollDown(uint8_t n);
|
||||
|
||||
/**
|
||||
Saves the cursors current position.
|
||||
*/
|
||||
void saveCursorPosition(void);
|
||||
|
||||
/**
|
||||
Restores the last saved cursor position.
|
||||
*/
|
||||
void restoreCursorPosition(void);
|
||||
|
||||
/**
|
||||
Clears part or all of screen dependent on the value of n:
|
||||
0 or missing: clear from cursor to end of screen
|
||||
1: clear from cursor to end of screen
|
||||
2: clear entire screen
|
||||
*/
|
||||
void eraseDisplay(uint8_t n);
|
||||
|
||||
/**
|
||||
Erases part of a line dependent on the value of n:
|
||||
0 or missing: clear from cursor to end of the line
|
||||
1: clear from cursor to beginning of the line
|
||||
2: clear entire line
|
||||
*/
|
||||
void eraseInline(uint8_t n);
|
||||
|
||||
/**
|
||||
Hides the cursor
|
||||
*/
|
||||
void hideCursor(void);
|
||||
|
||||
/**
|
||||
Shows the cursor
|
||||
*/
|
||||
void showCursor(void);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Utility functions (with no associated ASCII or ANSI escape)
|
||||
|
||||
/**
|
||||
Turns the cursor blink off.
|
||||
*/
|
||||
void blinkCursorOff(void);
|
||||
|
||||
/**
|
||||
Turns the cursor blink on.
|
||||
*/
|
||||
void blinkCursorOn(void);
|
||||
|
||||
/**
|
||||
Turns the display off.
|
||||
*/
|
||||
void displayOff(void);
|
||||
|
||||
/**
|
||||
Turns the display on.
|
||||
*/
|
||||
void displayOn(void);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
Read a single character from the row and column given (1 based) returning the cursor to
|
||||
its previous original position.
|
||||
*/
|
||||
char readCharFromLCD(uint8_t row, uint8_t column);
|
||||
|
||||
/**
|
||||
Read a line i (ones based) into str.
|
||||
*/
|
||||
void readLCDLine(uint8_t i, char* str);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Advanced functions for special cases
|
||||
|
||||
/**
|
||||
Read len characters from (from_row, from_column) to (to_row, to_column) returning the cursor
|
||||
to its original position after the read. Upon success (not overflowing the screen), 0 is
|
||||
returned; otherwise non zero will be returned. The str pointer will be updated with the
|
||||
characters read from the screen. Even in the case of failure, str may be partially populated.
|
||||
*/
|
||||
void readCharsFromLCD(uint8_t from_row, uint8_t from_column, uint8_t to_row, uint8_t to_column, char* str, uint8_t len);
|
||||
|
||||
/**
|
||||
Initialize the LCD display via its internal reset circuit.
|
||||
|
||||
Note: this is not the recommended way to initialize the LCD as it is unreliable and depends
|
||||
on the power supply. Preferably the software initialization method should be used (via
|
||||
the initLCD function).
|
||||
*/
|
||||
void initLCDByInternalReset(void);
|
||||
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Mode and settings sanity check (preprocessor tests of lcdLibConfig.h)
|
||||
//---------------------------------------------------------------------------------------------
|
||||
|
||||
#if !defined(LCD_CHARACTERS_PER_LINE)
|
||||
#error "All modes require LCD_CHARACTERS_PER_LINE to be defined."
|
||||
#elif !defined(LCD_NUMBER_OF_LINES)
|
||||
#error "All modes require LCD_NUMBER_OF_LINES to be defined."
|
||||
#elif !defined(LCD_LINE_BEGINNINGS)
|
||||
#error "All modes require LCD_LINE_BEGINNINGS to be defined."
|
||||
#else
|
||||
|
||||
#if LCD_NUMBER_OF_LINES == 1
|
||||
#define LCD_LINES 0
|
||||
#else
|
||||
#define LCD_LINES (1 << INSTR_FUNC_SET_N)
|
||||
#endif
|
||||
|
||||
#define LCD_CHARACTERS_PER_SCREEN (LCD_CHARACTERS_PER_LINE * LCD_NUMBER_OF_LINES)
|
||||
#endif
|
||||
|
||||
#if !defined(LCD_FONT_5x8) &&\
|
||||
!defined(LCD_FONT_5x10)
|
||||
#error "All modes require LCD_FONT_5x8 or LCD_FONT_5x10 to be defined."
|
||||
#elif defined(LCD_FONT_5x8) && \
|
||||
defined(LCD_FONT_5x10)
|
||||
#error "LCD_FONT_5x8 and LCD_FONT_5x10 are mutually exclusive. Choose one."
|
||||
#elif defined(LCD_FONT_5x8)
|
||||
#define LCD_FONT 0
|
||||
#elif defined(LCD_FONT_5x10)
|
||||
#define LCD_FONT (1 << INSTR_FUNC_SET_F)
|
||||
#endif
|
||||
|
||||
#if !defined (LCD_RS) || \
|
||||
!defined (LCD_RS_PORT) || \
|
||||
!defined (LCD_RS_DDR) || \
|
||||
!defined (LCD_RW) || \
|
||||
!defined (LCD_RW_PORT) || \
|
||||
!defined (LCD_RW_DDR) || \
|
||||
!defined (LCD_ENABLE) || \
|
||||
!defined (LCD_ENABLE_PORT) || \
|
||||
!defined (LCD_ENABLE_DDR)
|
||||
#error "All modes require LCD_RS[,_PORT,_DDR], LCD_RW[,_PORT,_DDR], and LCD_ENABLE[,_PORT,_DDR] be defined."
|
||||
#endif
|
||||
|
||||
#if defined (EIGHT_BIT_ARBITRARY_PIN_MODE) && \
|
||||
defined (FOUR_BIT_MODE)
|
||||
#error "EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE are mutually exclusive. Choose one."
|
||||
#elif defined (EIGHT_BIT_ARBITRARY_PIN_MODE) || \
|
||||
defined (FOUR_BIT_MODE)
|
||||
|
||||
// EIGHT_BIT_ARBITRARY_PIN_MODE specific requirements
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
#if !defined (LCD_DBUS0) || \
|
||||
!defined (LCD_DBUS0_PORT) || \
|
||||
!defined (LCD_DBUS0_DDR) || \
|
||||
!defined (LCD_DBUS0_PIN) || \
|
||||
!defined (LCD_DBUS1) || \
|
||||
!defined (LCD_DBUS1_PORT) || \
|
||||
!defined (LCD_DBUS1_DDR) || \
|
||||
!defined (LCD_DBUS1_PIN) || \
|
||||
!defined (LCD_DBUS2) || \
|
||||
!defined (LCD_DBUS2_PORT) || \
|
||||
!defined (LCD_DBUS2_DDR) || \
|
||||
!defined (LCD_DBUS2_PIN) || \
|
||||
!defined (LCD_DBUS3) || \
|
||||
!defined (LCD_DBUS3_PORT) || \
|
||||
!defined (LCD_DBUS3_DDR) || \
|
||||
!defined (LCD_DBUS3_PIN)
|
||||
#error "EIGHT_BIT_ARBITRARY_PIN_MODE require that LCD_DBUS*[,_PORT,_DDR,_PIN] be defined."
|
||||
#endif
|
||||
#endif
|
||||
|
||||
// Requirements for EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE
|
||||
#if !defined (LCD_DBUS4) || \
|
||||
!defined (LCD_DBUS4_PORT) || \
|
||||
!defined (LCD_DBUS4_DDR) || \
|
||||
!defined (LCD_DBUS4_PIN) || \
|
||||
!defined (LCD_DBUS5) || \
|
||||
!defined (LCD_DBUS5_PORT) || \
|
||||
!defined (LCD_DBUS5_DDR) || \
|
||||
!defined (LCD_DBUS5_PIN) || \
|
||||
!defined (LCD_DBUS6) || \
|
||||
!defined (LCD_DBUS6_PORT) || \
|
||||
!defined (LCD_DBUS6_DDR) || \
|
||||
!defined (LCD_DBUS6_PIN) || \
|
||||
!defined (LCD_DBUS7) || \
|
||||
!defined (LCD_DBUS7_PORT) || \
|
||||
!defined (LCD_DBUS7_DDR) || \
|
||||
!defined (LCD_DBUS7_PIN)
|
||||
#error "Both EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE require that LCD_DBUS*[,_PORT,_DDR,_PIN] be defined."
|
||||
#endif
|
||||
|
||||
// Set LCD_BF automatically for both EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE
|
||||
#undef LCD_BF
|
||||
#define LCD_BF LCD_DBUS7
|
||||
|
||||
#else
|
||||
#if !defined (LCD_DBUS_PORT) || \
|
||||
!defined (LCD_DBUS_DDR) || \
|
||||
!defined (LCD_DBUS_PIN) || \
|
||||
!defined (LCD_BF)
|
||||
#error "Default mode requires that LCD_DBUS_[PORT,DDR,PIN] and LCD_BF be defined."
|
||||
#endif
|
||||
|
||||
#undef LCD_DBUS7_PORT
|
||||
#define LCD_DBUS7_PORT LCD_DBUS_PORT
|
||||
#undef LCD_DBUS7_DDR
|
||||
#define LCD_DBUS7_DDR LCD_DBUS_DDR
|
||||
#undef LCD_DBUS7_PIN
|
||||
#define LCD_DBUS7_PIN LCD_DBUS_PIN
|
||||
#endif
|
||||
|
||||
#endif /* LCD_LIB_H */
|
||||
|
|
@ -1,156 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file lcdLibConfig.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Oct 4, 2015
|
||||
* @brief Configuration file for lcdLib.h
|
||||
*/
|
||||
|
||||
// Includes -------------------------------------------------------------------------------
|
||||
|
||||
#include <avr/io.h>
|
||||
|
||||
//------------------------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
Usage
|
||||
=====
|
||||
|
||||
Operates in 3 mutually exclusive modes:
|
||||
1. Default Mode
|
||||
8-bit mode that requires all its data bus lines be on the same PORT.
|
||||
2. EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
8-bit mode that allows the data bus lines to use any IO pin.
|
||||
3. FOUR_BIT_MODE
|
||||
4-bit mode that allows the data bus lines to use any IO pin.
|
||||
*/
|
||||
|
||||
/*
|
||||
Screen characteristics
|
||||
*/
|
||||
|
||||
#define LCD_CHARACTERS_PER_LINE 20 ///< Number of characters per line of the LCD
|
||||
#define LCD_NUMBER_OF_LINES 4 ///< Number of lines of the LCD
|
||||
#define LCD_LINE_BEGINNINGS 0x00, \
|
||||
0x40, \
|
||||
0x14, \
|
||||
0x54 ///< Memory locations for each physical line ordered 1 to LCD_NUMBER_OF_LINES
|
||||
|
||||
/* Which font to use (can only leave one uncommented) */
|
||||
#define LCD_FONT_5x8
|
||||
//#define LCD_FONT_5x10
|
||||
|
||||
/* Support ANSI escapes; comment to disable */
|
||||
//#define LCD_ANSI_ESCAPE_ENABLE
|
||||
|
||||
/* Modes */
|
||||
|
||||
// Default mode: 8-bit data bus
|
||||
|
||||
// 8-bit mode with data bus on arbitrary pins
|
||||
//#define EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
|
||||
// LCD in 4-bit mode (on arbitrary pins)
|
||||
#define FOUR_BIT_MODE
|
||||
|
||||
/* All mode options */
|
||||
|
||||
#define LCD_RS PD2
|
||||
#define LCD_RS_PORT PORTD
|
||||
#define LCD_RS_DDR DDRD
|
||||
|
||||
#define LCD_RW PD3
|
||||
#define LCD_RW_PORT PORTD
|
||||
#define LCD_RW_DDR DDRD
|
||||
|
||||
#define LCD_ENABLE PD4
|
||||
#define LCD_ENABLE_PORT PORTD
|
||||
#define LCD_ENABLE_DDR DDRD
|
||||
|
||||
/*
|
||||
Mode specific settings
|
||||
*/
|
||||
|
||||
/* Default Mode */
|
||||
|
||||
// LCD data bus PORT, PIN and DDR.
|
||||
#define LCD_DBUS_PORT PORTB
|
||||
|
||||
#define LCD_DBUS_DDR DDRB
|
||||
#define LCD_DBUS_PIN PINB
|
||||
|
||||
// This must be set in default mode to the MSB of the data lines
|
||||
#define LCD_BF PB7
|
||||
|
||||
/* EIGHT_BIT_ARBITRARY_PIN_MODE specific settings */
|
||||
|
||||
#define LCD_DBUS0 PB0
|
||||
#define LCD_DBUS0_PORT PORTB
|
||||
#define LCD_DBUS0_DDR DDRB
|
||||
#define LCD_DBUS0_PIN PINB
|
||||
|
||||
#define LCD_DBUS1 PB1
|
||||
#define LCD_DBUS1_PORT PORTB
|
||||
#define LCD_DBUS1_DDR DDRB
|
||||
#define LCD_DBUS1_PIN PINB
|
||||
|
||||
#define LCD_DBUS2 PB2
|
||||
#define LCD_DBUS2_PORT PORTB
|
||||
#define LCD_DBUS2_DDR DDRB
|
||||
#define LCD_DBUS2_PIN PINB
|
||||
|
||||
#define LCD_DBUS3 PB3
|
||||
#define LCD_DBUS3_PORT PORTB
|
||||
#define LCD_DBUS3_DDR DDRB
|
||||
#define LCD_DBUS3_PIN PINB
|
||||
|
||||
/* FOUR_BIT_MODE and EIGHT_BIT_ARBITRARY_PIN_MODE shared settings */
|
||||
|
||||
#define LCD_DBUS4 PB4
|
||||
#define LCD_DBUS4_PORT PORTB
|
||||
#define LCD_DBUS4_DDR DDRB
|
||||
#define LCD_DBUS4_PIN PINB
|
||||
|
||||
#define LCD_DBUS5 PB5
|
||||
#define LCD_DBUS5_PORT PORTB
|
||||
#define LCD_DBUS5_DDR DDRB
|
||||
#define LCD_DBUS5_PIN PINB
|
||||
|
||||
#define LCD_DBUS6 PB6
|
||||
#define LCD_DBUS6_PORT PORTB
|
||||
#define LCD_DBUS6_DDR DDRB
|
||||
#define LCD_DBUS6_PIN PINB
|
||||
|
||||
#define LCD_DBUS7 PB7
|
||||
#define LCD_DBUS7_PORT PORTB
|
||||
#define LCD_DBUS7_DDR DDRB
|
||||
#define LCD_DBUS7_PIN PINB
|
||||
|
||||
|
||||
/* LCD delays (in microseconds when unspecified) */
|
||||
|
||||
#define LCD_ENABLE_HIGH_DELAY 25
|
||||
#define LCD_ENABLE_LOW_DELAY 25
|
||||
#define LCD_INIT_DELAY0 15000
|
||||
#define LCD_INIT_DELAY1 8200
|
||||
#define LCD_INIT_DELAY2 200
|
||||
|
||||
#define LCD_CLEAR_DISPLAY_DELAY 16000
|
||||
#define LCD_RETURN_HOME_DELAY 16000
|
||||
#define LCD_GENERIC_INSTR_DELAY 50
|
||||
|
|
@ -1,61 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file lcd_instr.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Oct 26, 2015
|
||||
* @brief Constant macro definitions of HD44780 compatible character LCD instruction set
|
||||
*/
|
||||
|
||||
/*
|
||||
LCD character display instructions
|
||||
*/
|
||||
|
||||
// Simple instructions with no options
|
||||
#define CMD_INIT 0x30
|
||||
#define CMD_INIT_FOUR_BIT 0x20
|
||||
#define CMD_CLEAR_DISPLAY 0x01
|
||||
#define CMD_RETURN_HOME 0x02
|
||||
|
||||
// Entry Set instruction and associated options
|
||||
#define INSTR_ENTRY_SET 0x04
|
||||
#define INSTR_ENTRY_SET_ID 1
|
||||
#define INSTR_ENTRY_SET_S 0
|
||||
|
||||
// Display control instruction and associated options
|
||||
#define INSTR_DISPLAY 0x08
|
||||
#define INSTR_DISPLAY_D 2
|
||||
#define INSTR_DISPLAY_C 1
|
||||
#define INSTR_DISPLAY_B 0
|
||||
|
||||
// Cursor or display shift instruction and associated options
|
||||
#define INSTR_MOV_SHIFT 0x10
|
||||
#define INSTR_MOV_SHIFT_SC 3
|
||||
#define INSTR_MOV_SHIFT_RL 2
|
||||
|
||||
// Function set instruction and associated options
|
||||
#define INSTR_FUNC_SET 0x20
|
||||
#define INSTR_FUNC_SET_DL 4
|
||||
#define INSTR_FUNC_SET_N 3
|
||||
#define INSTR_FUNC_SET_F 2
|
||||
|
||||
// Set CG RAM address instruction
|
||||
#define INSTR_CGRAM_ADDR 0x60
|
||||
|
||||
// Set DD RAM address instruction
|
||||
#define INSTR_DDRAM_ADDR 0x80
|
||||
|
|
@ -1,197 +0,0 @@
|
|||
|
||||
##########------------------------------------------------------##########
|
||||
########## Project-specific Details ##########
|
||||
########## Check these every time you start a new project ##########
|
||||
##########------------------------------------------------------##########
|
||||
|
||||
MCU = atmega328p
|
||||
F_CPU = 8000000UL
|
||||
BAUD = 9600
|
||||
## Also try BAUD = 19200 or 38400 if you're feeling lucky.
|
||||
|
||||
## A directory for common include files and the simple USART library.
|
||||
## If you move either the current folder or the Library folder, you'll
|
||||
## need to change this path to match.
|
||||
#LIBDIR = ../../AVR-Programming-Library
|
||||
|
||||
##########------------------------------------------------------##########
|
||||
########## Programmer Defaults ##########
|
||||
########## Set up once, then forget about it ##########
|
||||
########## (Can override. See bottom of file.) ##########
|
||||
##########------------------------------------------------------##########
|
||||
|
||||
PROGRAMMER_TYPE = avrisp
|
||||
# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
|
||||
PROGRAMMER_ARGS = -b 19200 -P /dev/ttyUSB0
|
||||
|
||||
##########------------------------------------------------------##########
|
||||
########## Program Locations ##########
|
||||
########## Won't need to change if they're in your PATH ##########
|
||||
##########------------------------------------------------------##########
|
||||
|
||||
CC = avr-gcc
|
||||
OBJCOPY = avr-objcopy
|
||||
OBJDUMP = avr-objdump
|
||||
AVRSIZE = avr-size
|
||||
AVRDUDE = avrdude
|
||||
|
||||
##########------------------------------------------------------##########
|
||||
########## Makefile Magic! ##########
|
||||
########## Summary: ##########
|
||||
########## We want a .hex file ##########
|
||||
########## Compile source files into .elf ##########
|
||||
########## Convert .elf file into .hex ##########
|
||||
########## You shouldn't need to edit below. ##########
|
||||
##########------------------------------------------------------##########
|
||||
|
||||
## The name of your project (without the .c)
|
||||
# TARGET = blinkLED
|
||||
## Or name it automatically after the enclosing directory
|
||||
TARGET = $(lastword $(subst /, ,$(CURDIR)))
|
||||
|
||||
# Object files: will find all .c/.h files in current directory
|
||||
# and in LIBDIR. If you have any other (sub-)directories with code,
|
||||
# you can add them in to SOURCES below in the wildcard statement.
|
||||
SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
|
||||
OBJECTS=$(SOURCES:.c=.o)
|
||||
HEADERS=$(SOURCES:.c=.h)
|
||||
|
||||
## Compilation options, type man avr-gcc if you're curious.
|
||||
# Removed "-I$(LIBDIR)" from end of CPPFLAGS
|
||||
CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I.
|
||||
CFLAGS = -Os -g -std=gnu99 -Wall
|
||||
## Use short (8-bit) data types
|
||||
CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
|
||||
## Splits up object files per function
|
||||
CFLAGS += -ffunction-sections -fdata-sections
|
||||
LDFLAGS = -Wl,-Map,$(TARGET).map
|
||||
## Optional, but often ends up with smaller code
|
||||
LDFLAGS += -Wl,--gc-sections
|
||||
## Relax shrinks code even more, but makes disassembly messy
|
||||
## LDFLAGS += -Wl,--relax
|
||||
## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm ## for floating-point printf
|
||||
## LDFLAGS += -Wl,-u,vfprintf -lprintf_min ## for smaller printf
|
||||
TARGET_ARCH = -mmcu=$(MCU)
|
||||
|
||||
## Explicit pattern rules:
|
||||
## To make .o files from .c files
|
||||
%.o: %.c $(HEADERS) Makefile
|
||||
$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
|
||||
|
||||
$(TARGET).elf: $(OBJECTS)
|
||||
$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
|
||||
|
||||
%.hex: %.elf
|
||||
$(OBJCOPY) -j .text -j .data -O ihex $< $@
|
||||
|
||||
%.eeprom: %.elf
|
||||
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
|
||||
|
||||
%.lst: %.elf
|
||||
$(OBJDUMP) -S $< > $@
|
||||
|
||||
## These targets don't have files named after them
|
||||
.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
|
||||
|
||||
all: $(TARGET).hex
|
||||
|
||||
debug:
|
||||
@echo
|
||||
@echo "Source files:" $(SOURCES)
|
||||
@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
|
||||
@echo
|
||||
|
||||
# Optionally create listing file from .elf
|
||||
# This creates approximate assembly-language equivalent of your code.
|
||||
# Useful for debugging time-sensitive bits,
|
||||
# or making sure the compiler does what you want.
|
||||
disassemble: $(TARGET).lst
|
||||
|
||||
disasm: disassemble
|
||||
|
||||
# Optionally show how big the resulting program is
|
||||
size: $(TARGET).elf
|
||||
$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
|
||||
|
||||
clean:
|
||||
rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
|
||||
$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
|
||||
$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
|
||||
$(TARGET).eeprom
|
||||
|
||||
squeaky_clean:
|
||||
rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
|
||||
|
||||
##########------------------------------------------------------##########
|
||||
########## Programmer-specific details ##########
|
||||
########## Flashing code to AVR using avrdude ##########
|
||||
##########------------------------------------------------------##########
|
||||
|
||||
flash: $(TARGET).hex
|
||||
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
|
||||
|
||||
## An alias
|
||||
program: flash
|
||||
|
||||
flash_eeprom: $(TARGET).eeprom
|
||||
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
|
||||
|
||||
avrdude_terminal:
|
||||
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
|
||||
|
||||
## If you've got multiple programmers that you use,
|
||||
## you can define them here so that it's easy to switch.
|
||||
## To invoke, use something like `make flash_arduinoISP`
|
||||
flash_usbtiny: PROGRAMMER_TYPE = usbtiny
|
||||
flash_usbtiny: PROGRAMMER_ARGS = # USBTiny works with no further arguments
|
||||
flash_usbtiny: flash
|
||||
|
||||
flash_usbasp: PROGRAMMER_TYPE = usbasp
|
||||
flash_usbasp: PROGRAMMER_ARGS = # USBasp works with no further arguments
|
||||
flash_usbasp: flash
|
||||
|
||||
flash_arduinoISP: PROGRAMMER_TYPE = avrisp
|
||||
flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0
|
||||
## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
|
||||
flash_arduinoISP: flash
|
||||
|
||||
flash_109: PROGRAMMER_TYPE = avr109
|
||||
flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
|
||||
flash_109: flash
|
||||
|
||||
##########------------------------------------------------------##########
|
||||
########## Fuse settings and suitable defaults ##########
|
||||
##########------------------------------------------------------##########
|
||||
|
||||
## Mega 48, 88, 168, 328 default values
|
||||
LFUSE = 0x62
|
||||
HFUSE = 0xdf
|
||||
EFUSE = 0x00
|
||||
|
||||
## Generic
|
||||
FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
|
||||
|
||||
fuses:
|
||||
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
|
||||
$(PROGRAMMER_ARGS) $(FUSE_STRING)
|
||||
show_fuses:
|
||||
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv
|
||||
|
||||
## Called with no extra definitions, sets to defaults
|
||||
set_default_fuses: FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m
|
||||
set_default_fuses: fuses
|
||||
|
||||
## Set the fuse byte for full-speed mode
|
||||
## Note: can also be set in firmware for modern chips
|
||||
set_fast_fuse: LFUSE = 0xE2
|
||||
set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m
|
||||
set_fast_fuse: fuses
|
||||
|
||||
## Set the EESAVE fuse byte to preserve EEPROM across flashes
|
||||
set_eeprom_save_fuse: HFUSE = 0xD7
|
||||
set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
|
||||
set_eeprom_save_fuse: fuses
|
||||
|
||||
## Clear the EESAVE fuse byte
|
||||
clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
|
||||
clear_eeprom_save_fuse: fuses
|
||||
|
|
@ -1,62 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* File: USART.c
|
||||
* Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* Date: Oct 6, 2015
|
||||
*/
|
||||
|
||||
#include <avr/io.h>
|
||||
#include "USART.h"
|
||||
#include <util/setbaud.h>
|
||||
|
||||
#ifndef BAUD /* if not defined in Makefile... */
|
||||
#define BAUD 9600 /* set a safe default baud rate */
|
||||
#endif
|
||||
|
||||
void initUSART(void) { /* requires BAUD */
|
||||
UBRR0H = UBRRH_VALUE; /* defined in setbaud.h */
|
||||
UBRR0L = UBRRL_VALUE;
|
||||
#if USE_2X
|
||||
UCSR0A |= (1 << U2X0);
|
||||
#else
|
||||
UCSR0A &= ~(1 << U2X0);
|
||||
#endif
|
||||
/* Enable USART transmitter/receiver */
|
||||
UCSR0B = (1 << TXEN0) | (1 << RXEN0);
|
||||
UCSR0C = (1 << UCSZ01) | (1 << UCSZ00); /* 8 data bits, 1 stop bit */
|
||||
}
|
||||
|
||||
|
||||
void transmitByte(uint8_t data) {
|
||||
/* Wait for empty transmit buffer */
|
||||
loop_until_bit_is_set(UCSR0A, UDRE0);
|
||||
UDR0 = data; /* send data */
|
||||
}
|
||||
|
||||
void transmitString(const char* data) {
|
||||
while (*data != '\0') {
|
||||
transmitByte(*data);
|
||||
data++;
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t receiveByte(void) {
|
||||
loop_until_bit_is_set(UCSR0A, RXC0); /* Wait for incoming data */
|
||||
return UDR0; /* return register value */
|
||||
}
|
||||
|
|
@ -1,43 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file USART.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Oct 6, 2015
|
||||
* @brief Functions to initialize, read and write using USART.
|
||||
*/
|
||||
|
||||
/**
|
||||
Initialize USART hardware.
|
||||
*/
|
||||
void initUSART(void);
|
||||
|
||||
/**
|
||||
Transmit a single byte using USART.
|
||||
*/
|
||||
void transmitByte(uint8_t data);
|
||||
|
||||
/**
|
||||
Transmit a string using USART.
|
||||
*/
|
||||
void transmitString(const char* data);
|
||||
|
||||
/**
|
||||
Receive a single byte using USART
|
||||
*/
|
||||
uint8_t receiveByte(void);
|
||||
|
|
@ -1,56 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file ansi_escapes.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Oct 9, 2015
|
||||
* @brief Macros to ease writing ANSI escapes.
|
||||
*/
|
||||
|
||||
#define CSI "\e[" ///< Control Sequence Introducer
|
||||
|
||||
#define CUU(n) CSI #n "A" ///< Cursor up
|
||||
#define CUD(n) CSI #n "B" ///< Cursor down
|
||||
#define CUF(n) CSI #n "C" ///< Cursor forward
|
||||
#define CUB(n) CSI #n "D" ///< Cursor backward
|
||||
|
||||
#define CNL(n) CSI #n "E" ///< Cursor next line
|
||||
#define CPL(n) CSI #n "F" ///< Cursor previous line
|
||||
|
||||
#define CHA(n) CSI #n "G" ///< Cursor horizontal absolute
|
||||
#define CUP(n,m) CSI #n ";" #m "H" ///< Cursor position
|
||||
|
||||
#define ED(n) CSI #n "J" ///< Erase display
|
||||
#define EL(n) CSI #n "K" ///< Erase in line
|
||||
#define SU(n) CSI #n "S" ///< Scroll up
|
||||
#define SD(n) CSI #n "T" ///< Scroll down
|
||||
|
||||
#define HVP(n,m) CSI #n ";" #m "f" ///< Horizontal and vertical position
|
||||
|
||||
// #define SGR(n,m) CSI #n #m ///< Select graphic rendition
|
||||
|
||||
#define AUX_ON CSI "5i" ///< AUX port on
|
||||
#define AUX_OFF CSI "4i" ///< AUX port off
|
||||
|
||||
// #define DSR CSI "6 n" ///< Device status report
|
||||
|
||||
#define SCP CSI "s" ///< Save cursor position
|
||||
#define RCP CSI "u" ///< Restore cursor position
|
||||
|
||||
#define HIDE_CURSOR CSI "?25l" ///< DECTCEM: hide cursor
|
||||
#define SHOW_CURSOR CSI "?25h" ///< DECTCEM: show cursor
|
||||
|
|
@ -1,969 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* File: lcdLib.c
|
||||
* Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* Date: Sep 29, 2015
|
||||
*/
|
||||
|
||||
// Includes -----------------------------------------------------------------------------------
|
||||
#include <math.h>
|
||||
#include <avr/io.h>
|
||||
#include <util/delay.h>
|
||||
|
||||
#include "lcdLib.h"
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Static global variables
|
||||
|
||||
static volatile uint8_t currentLineNum;
|
||||
static volatile uint8_t currentLineChars;
|
||||
|
||||
static volatile uint8_t saveCursorLineNum;
|
||||
static volatile uint8_t saveCursorLineChars;
|
||||
|
||||
static volatile uint8_t lcdState;
|
||||
|
||||
static const uint8_t lineBeginnings[LCD_NUMBER_OF_LINES] = { LCD_LINE_BEGINNINGS };
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Static functions
|
||||
|
||||
/*
|
||||
Bring LCD_ENABLE line high, wait for LCD_ENABLE_HIGH_DELAY; then bring LCD_ENABLE line low
|
||||
and wait for LCD_ENABLE_LOW_DELAY.
|
||||
|
||||
Note: LCD_ENABLE, LCD_ENABLE_HIGH_DELAY, and LCD_ENABLE_LOW_DELAY must be defined in lcdLibConfig.h
|
||||
*/
|
||||
static void clkLCD(void) {
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(LCD_ENABLE_HIGH_DELAY);
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(LCD_ENABLE_LOW_DELAY);
|
||||
}
|
||||
|
||||
/*
|
||||
Wait until LCD_BF (busy flag) is cleared (low).
|
||||
*/
|
||||
static void loop_until_LCD_BF_clear(void) {
|
||||
uint8_t bf;
|
||||
|
||||
LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0
|
||||
LCD_RW_PORT |= (1 << LCD_RW); // RW=1
|
||||
|
||||
// Set LCD_BF as input
|
||||
LCD_DBUS7_DDR &= ~(1 << LCD_BF);
|
||||
|
||||
do {
|
||||
bf = 0;
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
|
||||
bf |= (LCD_DBUS7_PIN & (1 << LCD_BF));
|
||||
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
|
||||
#ifdef FOUR_BIT_MODE
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
#endif
|
||||
} while (bf);
|
||||
|
||||
#if defined (FOUR_BIT_MODE) || defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
LCD_DBUS7_DDR |= (1 << LCD_DBUS7);
|
||||
LCD_DBUS6_DDR |= (1 << LCD_DBUS6);
|
||||
LCD_DBUS5_DDR |= (1 << LCD_DBUS5);
|
||||
LCD_DBUS4_DDR |= (1 << LCD_DBUS4);
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
LCD_DBUS3_DDR |= (1 << LCD_DBUS3);
|
||||
LCD_DBUS2_DDR |= (1 << LCD_DBUS2);
|
||||
LCD_DBUS1_DDR |= (1 << LCD_DBUS1);
|
||||
LCD_DBUS0_DDR |= (1 << LCD_DBUS0);
|
||||
#endif
|
||||
#else
|
||||
LCD_DBUS_DDR = 0xff; // Reset all LCD_DBUS_PORT pins as outputs
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Given a 8 bit integer, writes the four MSB's (one nibble) to the LCD data bus.
|
||||
|
||||
Note: this is only defined in FOUR_BIT_MODE
|
||||
*/
|
||||
#ifdef FOUR_BIT_MODE
|
||||
static void writeLCDDBusNibble_(uint8_t b) {
|
||||
// Reset data lines to zeros
|
||||
LCD_DBUS7_PORT &= ~(1 << LCD_DBUS7);
|
||||
LCD_DBUS6_PORT &= ~(1 << LCD_DBUS6);
|
||||
LCD_DBUS5_PORT &= ~(1 << LCD_DBUS5);
|
||||
LCD_DBUS4_PORT &= ~(1 << LCD_DBUS4);
|
||||
|
||||
// Write 1's where appropriate on data lines
|
||||
if (b & (1 << 7)) LCD_DBUS7_PORT |= (1 << LCD_DBUS7);
|
||||
if (b & (1 << 6)) LCD_DBUS6_PORT |= (1 << LCD_DBUS6);
|
||||
if (b & (1 << 5)) LCD_DBUS5_PORT |= (1 << LCD_DBUS5);
|
||||
if (b & (1 << 4)) LCD_DBUS4_PORT |= (1 << LCD_DBUS4);
|
||||
|
||||
// Pulse the enable line
|
||||
clkLCD();
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
Given an 8 bit integer, writes it to the LCD data bus, regardless of its
|
||||
configuration (default 8-bit mode, 8-bit arbitrary pin mode and 4-bit mode). In the default
|
||||
8-bit mode and EIGHT_BIT_ARBITRARY_PIN_MODE, the given data is written in one cycle using the
|
||||
writeLCDDBusByte_ function. In FOUR_BIT_MODE however, the given data is written in two cycles
|
||||
using two successive calls to the writeLCDDBusNibble_ function.
|
||||
|
||||
This function does not ensure the LCD is ready to accept new data and thus needs to
|
||||
be handled by the caller.
|
||||
*/
|
||||
static void writeLCDDBusByte_(uint8_t b) {
|
||||
#ifdef FOUR_BIT_MODE
|
||||
writeLCDDBusNibble_(b);
|
||||
writeLCDDBusNibble_(b << 4);
|
||||
#elif defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
// Reset data lines to zeros
|
||||
LCD_DBUS7_PORT &= ~(1 << LCD_DBUS7);
|
||||
LCD_DBUS6_PORT &= ~(1 << LCD_DBUS6);
|
||||
LCD_DBUS5_PORT &= ~(1 << LCD_DBUS5);
|
||||
LCD_DBUS4_PORT &= ~(1 << LCD_DBUS4);
|
||||
LCD_DBUS3_PORT &= ~(1 << LCD_DBUS3);
|
||||
LCD_DBUS2_PORT &= ~(1 << LCD_DBUS2);
|
||||
LCD_DBUS1_PORT &= ~(1 << LCD_DBUS1);
|
||||
LCD_DBUS0_PORT &= ~(1 << LCD_DBUS0);
|
||||
|
||||
// Write 1's where appropriate on data lines
|
||||
if (b & (1 << 7)) LCD_DBUS7_PORT |= (1 << LCD_DBUS7);
|
||||
if (b & (1 << 6)) LCD_DBUS6_PORT |= (1 << LCD_DBUS6);
|
||||
if (b & (1 << 5)) LCD_DBUS5_PORT |= (1 << LCD_DBUS5);
|
||||
if (b & (1 << 4)) LCD_DBUS4_PORT |= (1 << LCD_DBUS4);
|
||||
if (b & (1 << 3)) LCD_DBUS3_PORT |= (1 << LCD_DBUS3);
|
||||
if (b & (1 << 2)) LCD_DBUS2_PORT |= (1 << LCD_DBUS2);
|
||||
if (b & (1 << 1)) LCD_DBUS1_PORT |= (1 << LCD_DBUS1);
|
||||
if (b & (1 << 0)) LCD_DBUS0_PORT |= (1 << LCD_DBUS0);
|
||||
|
||||
clkLCD();
|
||||
#else
|
||||
LCD_DBUS_PORT = b;
|
||||
clkLCD();
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Given a 8 bit integer representing a LCD instruction, sends it to the LCD display.
|
||||
|
||||
Sets RS=RW=0 and writes the given 8 bit integer to the LCD databus.
|
||||
|
||||
Note that this function does not ensure the LCD is ready to accept a new instruction and thus
|
||||
needs to be handled by the caller.
|
||||
*/
|
||||
static void writeLCDInstr_(uint8_t instr) {
|
||||
LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0
|
||||
LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0
|
||||
|
||||
writeLCDDBusByte_(instr);
|
||||
}
|
||||
|
||||
/*
|
||||
Given a 8 bit integer representing a LCD instruction, waits until the LCD is ready and sends
|
||||
the instruction.
|
||||
*/
|
||||
static inline void writeLCDInstr(uint8_t instr) {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeLCDInstr_(instr);
|
||||
}
|
||||
|
||||
/*
|
||||
Sets RS=1, RW=0 and accepts a char (8 bit) and outputs it to the current cursor position of
|
||||
the LCD. In the default 8-bit mode and EIGHT_BIT_ARBITRARY_PIN_MODE, the given data is
|
||||
written in one cycle using the writeLCDDBusByte_ function. In FOUR_BIT_MODE however, the given
|
||||
data is written in two cycles using two successive calls to the writeLCDDBusNibble_ function.
|
||||
*/
|
||||
static void writeCharToLCD_(char c) {
|
||||
LCD_RS_PORT |= (1 << LCD_RS); // RS=1
|
||||
LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0
|
||||
|
||||
writeLCDDBusByte_(c);
|
||||
}
|
||||
|
||||
static uint8_t readLCDDBusByte_(void) {
|
||||
LCD_RS_PORT |= (1 << LCD_RS); // RS=1
|
||||
LCD_RW_PORT |= (1 << LCD_RW); // RW=1
|
||||
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
|
||||
// Read data
|
||||
char c = 0;
|
||||
#if defined(FOUR_BIT_MODE)
|
||||
if (LCD_DBUS7_PIN & (1 << LCD_DBUS7)) c |= (1 << 7);
|
||||
if (LCD_DBUS6_PIN & (1 << LCD_DBUS6)) c |= (1 << 6);
|
||||
if (LCD_DBUS5_PIN & (1 << LCD_DBUS5)) c |= (1 << 5);
|
||||
if (LCD_DBUS4_PIN & (1 << LCD_DBUS4)) c |= (1 << 4);
|
||||
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
LCD_ENABLE_PORT |= (1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'delay data time' and 'enable pulse width'
|
||||
|
||||
if (LCD_DBUS7_PIN & (1 << LCD_DBUS7)) c |= (1 << 3);
|
||||
if (LCD_DBUS6_PIN & (1 << LCD_DBUS6)) c |= (1 << 2);
|
||||
if (LCD_DBUS5_PIN & (1 << LCD_DBUS5)) c |= (1 << 1);
|
||||
if (LCD_DBUS4_PIN & (1 << LCD_DBUS4)) c |= (1 << 0);
|
||||
#elif defined(EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
if (LCD_DBUS7_PIN & (1 << LCD_DBUS7)) c |= (1 << 7);
|
||||
if (LCD_DBUS6_PIN & (1 << LCD_DBUS6)) c |= (1 << 6);
|
||||
if (LCD_DBUS5_PIN & (1 << LCD_DBUS5)) c |= (1 << 5);
|
||||
if (LCD_DBUS4_PIN & (1 << LCD_DBUS4)) c |= (1 << 4);
|
||||
if (LCD_DBUS3_PIN & (1 << LCD_DBUS3)) c |= (1 << 3);
|
||||
if (LCD_DBUS2_PIN & (1 << LCD_DBUS2)) c |= (1 << 2);
|
||||
if (LCD_DBUS1_PIN & (1 << LCD_DBUS1)) c |= (1 << 1);
|
||||
if (LCD_DBUS0_PIN & (1 << LCD_DBUS0)) c |= (1 << 0);
|
||||
#else
|
||||
c = LCD_DBUS_PIN;
|
||||
#endif
|
||||
|
||||
LCD_ENABLE_PORT &= ~(1 << LCD_ENABLE);
|
||||
_delay_us(1); // 'address hold time', 'data hold time' and 'enable cycle width'
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
/*
|
||||
Given a character string, and a uint8_t pointer, reads the character string until a
|
||||
non-numerical ASCII character, returning the integer representation of the number read. At
|
||||
the end of the functions execution, the found_num uint8_t* will be updated to indicate how
|
||||
many digits were read. The new_loc char** will be updated with the new parsing position in
|
||||
the string.
|
||||
*/
|
||||
static uint8_t readASCIINumber(char* str, uint8_t* found_num, char** new_loc) {
|
||||
uint8_t nums[3];
|
||||
|
||||
*found_num = 0;
|
||||
while (*str != '\0' && *found_num < 3) {
|
||||
if (*str >= 0x30 && *str <= 0x39) {
|
||||
// Use *str as a number (specified in ASCII)
|
||||
nums[(*found_num)++] = *str - 0x30;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
|
||||
str++;
|
||||
}
|
||||
*new_loc = str;
|
||||
|
||||
uint8_t ret = 0;
|
||||
uint8_t i = *found_num - 1;
|
||||
for (uint8_t fnd = 0; fnd < *found_num; fnd++)
|
||||
ret += nums[fnd] * pow(10, i--);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
Set all pins of LCD_DBUS as outputs
|
||||
*/
|
||||
static inline void setLCDDBusAsOutputs(void) {
|
||||
#if defined (FOUR_BIT_MODE) || defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
LCD_DBUS7_DDR |= (1 << LCD_DBUS7);
|
||||
LCD_DBUS6_DDR |= (1 << LCD_DBUS6);
|
||||
LCD_DBUS5_DDR |= (1 << LCD_DBUS5);
|
||||
LCD_DBUS4_DDR |= (1 << LCD_DBUS4);
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
LCD_DBUS3_DDR |= (1 << LCD_DBUS3);
|
||||
LCD_DBUS2_DDR |= (1 << LCD_DBUS2);
|
||||
LCD_DBUS1_DDR |= (1 << LCD_DBUS1);
|
||||
LCD_DBUS0_DDR |= (1 << LCD_DBUS0);
|
||||
#endif
|
||||
#else
|
||||
LCD_DBUS_DDR = 0xff;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Set all pins of LCD_DBUS as inputs (disabling their output)
|
||||
*/
|
||||
static inline void setLCDDBusAsInputs(void) {
|
||||
#if defined (FOUR_BIT_MODE) || defined (EIGHT_BIT_ARBITRARY_PIN_MODE)
|
||||
LCD_DBUS7_DDR &= ~(1 << LCD_DBUS7);
|
||||
LCD_DBUS6_DDR &= ~(1 << LCD_DBUS6);
|
||||
LCD_DBUS5_DDR &= ~(1 << LCD_DBUS5);
|
||||
LCD_DBUS4_DDR &= ~(1 << LCD_DBUS4);
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
LCD_DBUS3_DDR &= ~(1 << LCD_DBUS3);
|
||||
LCD_DBUS2_DDR &= ~(1 << LCD_DBUS2);
|
||||
LCD_DBUS1_DDR &= ~(1 << LCD_DBUS1);
|
||||
LCD_DBUS0_DDR &= ~(1 << LCD_DBUS0);
|
||||
#endif
|
||||
#else
|
||||
LCD_DBUS_DDR = 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
Set RS=RW=0 and write the CMD_INIT command to the LCD data bus. Note that an appropriate
|
||||
pause must follow before sending new commands to the LCD using writeLCD*_ functions.
|
||||
*/
|
||||
static inline void softwareLCDInitPulse(void) {
|
||||
LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0
|
||||
LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0
|
||||
|
||||
#ifdef FOUR_BIT_MODE
|
||||
writeLCDDBusNibble_(CMD_INIT);
|
||||
#else
|
||||
writeLCDDBusByte_(CMD_INIT);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Library function definitions
|
||||
|
||||
/*
|
||||
Do software initialization as specified by the datasheet
|
||||
*/
|
||||
void initLCD(void) {
|
||||
// Set LCD_RS, LCD_RW and LCD_ENABLE as outputs
|
||||
LCD_RS_DDR |= (1 << LCD_RS);
|
||||
LCD_RW_DDR |= (1 << LCD_RW);
|
||||
LCD_ENABLE_DDR |= (1 << LCD_ENABLE);
|
||||
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
_delay_us(LCD_INIT_DELAY0); // Wait minimum 15ms as per datasheet
|
||||
softwareLCDInitPulse();
|
||||
_delay_us(LCD_INIT_DELAY1); // Wait minimum 4.1ms as per datasheet
|
||||
softwareLCDInitPulse();
|
||||
_delay_us(LCD_INIT_DELAY2); // Wait minimum 100us as per datasheet
|
||||
softwareLCDInitPulse();
|
||||
|
||||
#if defined (FOUR_BIT_MODE)
|
||||
// Function Set (4-bit interface)
|
||||
writeLCDDBusNibble_(CMD_INIT_FOUR_BIT);
|
||||
writeLCDInstr_(CMD_INIT_FOUR_BIT | LCD_LINES | LCD_FONT);
|
||||
#else
|
||||
// Function set (8-bit interface)
|
||||
writeLCDInstr_(INSTR_FUNC_SET | (1 << INSTR_FUNC_SET_DL) | LCD_LINES | LCD_FONT);
|
||||
#endif
|
||||
|
||||
/* BF now can be checked */
|
||||
|
||||
// Set functions of LCD
|
||||
writeLCDInstr(INSTR_DISPLAY); // Display off
|
||||
|
||||
// Clear display
|
||||
writeLCDInstr(CMD_CLEAR_DISPLAY);
|
||||
|
||||
// Increment mode, no shift
|
||||
writeLCDInstr(INSTR_ENTRY_SET | (1 << INSTR_ENTRY_SET_ID));
|
||||
|
||||
// Display on, cursor on, blink off
|
||||
lcdState = (1 << INSTR_DISPLAY_D) | (1 << INSTR_DISPLAY_C);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
/*
|
||||
Given a single character, checks whether its a ASCII escape and does the following:
|
||||
|
||||
- Newline '\n': moves the cursor to the next physical line of the LCD display; if the cursor is on
|
||||
the last line of the display, clears the display and positions the cursor at the top left
|
||||
of the LCD
|
||||
- Carriage return '\r': moves the cursor to the beginning of the current line
|
||||
- Backspace '\b': moves the cursor one position backwards, wrapping to the end of the
|
||||
previous line when at the beginning of a line (other then the first one). A space is then
|
||||
inserted to replace the character at point, without moving the cursor. When the cursor is
|
||||
at the beginning of the first line, does nothing.
|
||||
- Form feed '\f': clears the LCD display and places the cursor at the beginning of the first line.
|
||||
- Alarm '\a': ignored
|
||||
|
||||
Any other character is sent to the LCD display using writeCharToLCD_.
|
||||
*/
|
||||
void writeCharToLCD(char c) {
|
||||
switch (c) {
|
||||
case '\n': // Line feed
|
||||
if (currentLineNum == LCD_NUMBER_OF_LINES - 1) {
|
||||
scrollUp(1);
|
||||
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[currentLineNum]);
|
||||
} else {
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[++currentLineNum]);
|
||||
}
|
||||
break;
|
||||
case '\a': // Alarm
|
||||
break;
|
||||
case '\b': // Backspace (non-destructive)
|
||||
if (currentLineChars == 0 && currentLineNum == 0) {
|
||||
// At first line, first column; there is no where to move; do nothing
|
||||
break;
|
||||
} else if (currentLineChars == 0) {
|
||||
// At beginning of line, need to move the end of previous line
|
||||
currentLineChars = LCD_CHARACTERS_PER_LINE - 1;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[--currentLineNum] + currentLineChars));
|
||||
} else {
|
||||
// OK, simply go back one character
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + --currentLineChars));
|
||||
}
|
||||
|
||||
break;
|
||||
case '\r': // Carriage return
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[currentLineNum]);
|
||||
currentLineChars = 0;
|
||||
break;
|
||||
case '\f': // Form feed
|
||||
clearDisplay();
|
||||
break;
|
||||
default: // Printable character
|
||||
if (currentLineChars == LCD_CHARACTERS_PER_LINE - 1 && currentLineNum == LCD_NUMBER_OF_LINES - 1) {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeCharToLCD_(c);
|
||||
|
||||
scrollUp(1);
|
||||
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[currentLineNum]);
|
||||
} else if (currentLineChars == LCD_CHARACTERS_PER_LINE - 1) {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeCharToLCD_(c);
|
||||
|
||||
currentLineChars = 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | lineBeginnings[++currentLineNum]);
|
||||
} else {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
writeCharToLCD_(c);
|
||||
currentLineChars++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void writeStringToLCD(char* str) {
|
||||
while (*str != '\0') {
|
||||
#ifdef LCD_ANSI_ESCAPE_ENABLE
|
||||
// Check for ANSI CSI (Control Sequence Introducer)
|
||||
if (*str == '\e') {
|
||||
if (*(++str) != '\0' && *str == '[') {
|
||||
char* str_ref = ++str;
|
||||
switch (*str) {
|
||||
case 's': // SCP - Save cursor position
|
||||
saveCursorPosition();
|
||||
return;
|
||||
case 'u': // RCP - Restore cursor position
|
||||
restoreCursorPosition();
|
||||
return;
|
||||
case '?': // DECTCEM
|
||||
if (*(++str_ref) != '\0' && *str_ref == '2') {
|
||||
if (*(++str_ref) != '\0' && *str_ref == '5') {
|
||||
if (*(++str_ref) != '\0') {
|
||||
if (*str_ref == 'l') {
|
||||
hideCursor();
|
||||
} else if (*str_ref == 'h') {
|
||||
showCursor();
|
||||
} else {
|
||||
// Invalid escape
|
||||
}
|
||||
} // Invalid escape (early termination)
|
||||
} // Invalid escape
|
||||
} // Invalid escape
|
||||
return;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
// Read optional variable length number in ASCII (0x30 - 0x3f) where 0x3a - 0x3f are
|
||||
// ignored (they are used as flags by some terminals)
|
||||
uint8_t fnd0;
|
||||
uint8_t num0 = readASCIINumber(str, &fnd0, &str);
|
||||
|
||||
// Read optional (semicolon followed by optional variable length number)
|
||||
uint8_t fnd1;
|
||||
uint8_t num1;
|
||||
if (*str != '\0' && *str == ';') {
|
||||
num1 = readASCIINumber(++str, &fnd1, &str);
|
||||
|
||||
// Read control character (between 0x40 - 0x7e) for two argument sequences
|
||||
switch (*str) {
|
||||
case 'f': // HVP - Horizontal and vertical position
|
||||
case 'H': // CUP - Cursor position
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
num1 = fnd1 ? num1 : 1;
|
||||
setCursorPosition(num0, num1);
|
||||
break;
|
||||
default: // Invalid control character
|
||||
break;
|
||||
}
|
||||
} else if (*str != '\0') {
|
||||
// Read control character (between 0x40 - 0x7e) for single argument sequences
|
||||
switch (*str) {
|
||||
case 'A': // CUU - Cursor up
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorUp(num0);
|
||||
break;
|
||||
case 'B': // CUD - Cursor down
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorDown(num0);
|
||||
break;
|
||||
case 'C': // CUF - Cursor forward
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorForward(num0);
|
||||
break;
|
||||
case 'D': // CUB - Cursor back
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorBackward(num0);
|
||||
break;
|
||||
case 'E': // CNL - Cursor next line
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorNextLine(num0);
|
||||
break;
|
||||
case 'F': // CPL - Cursor previous line
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorPreviousLine(num0);
|
||||
break;
|
||||
case 'G': // CHA - Cursor horizontal absolute
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
moveCursorToColumn(num0);
|
||||
break;
|
||||
case 'J': // ED - Erase display
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
eraseDisplay(num0);
|
||||
break;
|
||||
case 'K': // EL - Erase in line
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
eraseInline(num0);
|
||||
break;
|
||||
case 'S': // SU - Scroll up
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
scrollUp(num0);
|
||||
break;
|
||||
case 'T': // SD Scroll down
|
||||
num0 = fnd0 ? num0 : 1;
|
||||
scrollDown(num0);
|
||||
break;
|
||||
case 'm': // SGR - Select graphic rendition (single optional argument)
|
||||
break;
|
||||
case ';': // SGR - Select graphic rendition (multiple arguments)
|
||||
if (fnd0) {
|
||||
while (fnd0) {
|
||||
readASCIINumber(++str, &fnd0, &str);
|
||||
if (fnd0) {
|
||||
if (*str == 'm') {
|
||||
break; // Valid SGR
|
||||
} else if (*str == ';') {
|
||||
continue; // More SGR parameters yet
|
||||
} else {
|
||||
break; // Invalid escape
|
||||
}
|
||||
} else {
|
||||
// Invalid escape; expected SGR parameter
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// Invalid escape; expected first SGR parameter but none given
|
||||
}
|
||||
break;
|
||||
case 'n': // DSR - Device status report
|
||||
if (fnd0 && num0 == 6) {
|
||||
// Valid DSR
|
||||
} else {
|
||||
// Invalid DSR
|
||||
}
|
||||
break;
|
||||
default: // Invalid control character
|
||||
writeCharToLCD(*str);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
return; // Invalid escape sequence (terminated early)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
writeCharToLCD(*str);
|
||||
}
|
||||
|
||||
str++;
|
||||
#else
|
||||
writeCharToLCD(*(str++));
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// LCD command functions (all have associated ANSI escape)
|
||||
|
||||
/*
|
||||
Writes the CMD_CLEAR_DISPLAY command to the LCD using writeLCDINSTR, and clears the local
|
||||
char and line counters.
|
||||
*/
|
||||
void clearDisplay(void) {
|
||||
writeLCDInstr(CMD_CLEAR_DISPLAY);
|
||||
|
||||
// Reset line and char number tracking
|
||||
currentLineNum = 0;
|
||||
currentLineChars = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
Writes the CMD_RETURN_HOME command to the LCD using writeLCDInstr, and clears the local char
|
||||
and line counters.
|
||||
*/
|
||||
void returnHome(void) {
|
||||
writeLCDInstr(CMD_RETURN_HOME);
|
||||
|
||||
// Reset line and char number tracking
|
||||
currentLineNum = 0;
|
||||
currentLineChars = 0;
|
||||
}
|
||||
|
||||
void getCursorPosition(uint8_t* row, uint8_t* column) {
|
||||
*row = currentLineNum + 1;
|
||||
*column = currentLineChars + 1;
|
||||
}
|
||||
|
||||
void setCursorPosition(uint8_t row, uint8_t column) {
|
||||
// Set currentLineNum and currentLineChars
|
||||
currentLineNum = row ? row - 1 : 0;
|
||||
currentLineChars = column ? column - 1 : 0;
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorUp(uint8_t n) {
|
||||
if (n < currentLineNum + 1) {
|
||||
currentLineNum -= n;
|
||||
} else {
|
||||
currentLineNum = 0;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorDown(uint8_t n) {
|
||||
if (n + currentLineNum < LCD_NUMBER_OF_LINES) {
|
||||
currentLineNum += n;
|
||||
} else {
|
||||
currentLineNum = LCD_NUMBER_OF_LINES - 1;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorForward(uint8_t n) {
|
||||
if (n + currentLineChars < LCD_CHARACTERS_PER_LINE) {
|
||||
currentLineChars += n;
|
||||
} else {
|
||||
currentLineChars = LCD_CHARACTERS_PER_LINE - 1;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorBackward(uint8_t n) {
|
||||
if (n < currentLineChars + 1) {
|
||||
currentLineChars -= n;
|
||||
} else {
|
||||
currentLineChars = 0;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorNextLine(uint8_t n) {
|
||||
currentLineChars = 0;
|
||||
|
||||
if (n + currentLineNum < LCD_NUMBER_OF_LINES) {
|
||||
currentLineNum += n;
|
||||
} else {
|
||||
currentLineNum = LCD_NUMBER_OF_LINES - 1;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorPreviousLine(uint8_t n) {
|
||||
currentLineChars = 0;
|
||||
|
||||
if (n < currentLineNum + 1) {
|
||||
currentLineNum -= n;
|
||||
} else {
|
||||
currentLineNum = 0;
|
||||
}
|
||||
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void moveCursorToColumn(uint8_t n) {
|
||||
if (n <= LCD_CHARACTERS_PER_LINE) {
|
||||
currentLineChars = n ? n - 1 : 0;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
} // else index out of range (off screen column)
|
||||
}
|
||||
|
||||
void eraseDisplay(uint8_t n) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
switch (n) {
|
||||
case 0: // Clear from cursor to end of screen
|
||||
{
|
||||
uint8_t len = (LCD_NUMBER_OF_LINES - old_row)*LCD_CHARACTERS_PER_LINE + (LCD_CHARACTERS_PER_LINE - old_column);
|
||||
for (uint8_t i = 0; i < len; i++)
|
||||
writeCharToLCD(' ');
|
||||
|
||||
// Write last char without scrolling
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(' ');
|
||||
break;
|
||||
}
|
||||
case 1: // Clear from cursor to beginning of screen
|
||||
{
|
||||
uint8_t len = (old_row - 1)*LCD_CHARACTERS_PER_LINE + old_column;
|
||||
returnHome();
|
||||
for (uint8_t i = 0; i < len; i++)
|
||||
writeCharToLCD(' ');
|
||||
|
||||
// Write last char without scrolling
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(' ');
|
||||
break;
|
||||
}
|
||||
case 2: // Clear entire screen
|
||||
clearDisplay();
|
||||
break;
|
||||
default: // Invalid argument; do nothing
|
||||
break;
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
|
||||
void eraseInline(uint8_t n) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
switch (n) {
|
||||
case 0: // Clear from cursor to end of line
|
||||
for (uint8_t i = old_column; i <= LCD_CHARACTERS_PER_LINE; i++)
|
||||
writeCharToLCD(' ');
|
||||
break;
|
||||
case 1: // Clear from cursor to beginning of line
|
||||
setCursorPosition(old_row, 1);
|
||||
for (uint8_t i = 1; i <= old_column; i++)
|
||||
writeCharToLCD(' ');
|
||||
break;
|
||||
case 2: // Clear entire line
|
||||
setCursorPosition(old_row, 1);
|
||||
for (uint8_t i = 1; i <= LCD_CHARACTERS_PER_LINE; i++) {
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(' ');
|
||||
}
|
||||
break;
|
||||
default: // Invalid argument; do nothing
|
||||
return;
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
|
||||
void scrollUp(uint8_t n) {
|
||||
#if LCD_NUMBER_OF_LINES == 1
|
||||
clearDisplay();
|
||||
#else
|
||||
if (n >= LCD_NUMBER_OF_LINES) {
|
||||
clearDisplay();
|
||||
} else {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
uint8_t len = (LCD_NUMBER_OF_LINES - n)*LCD_CHARACTERS_PER_LINE + 1;
|
||||
char str[len];
|
||||
readCharsFromLCD(n + 1, 1, LCD_NUMBER_OF_LINES, LCD_CHARACTERS_PER_LINE, str, len);
|
||||
setCursorPosition(1, 1); // returnHome();
|
||||
writeStringToLCD(str);
|
||||
|
||||
// Add n newlines to bottom of screen
|
||||
for (uint8_t i = 0; i < n; i++) {
|
||||
setCursorPosition(LCD_NUMBER_OF_LINES - i, 1);
|
||||
eraseInline(2);
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void scrollDown(uint8_t n) {
|
||||
#if LCD_NUMBER_OF_LINES == 1
|
||||
clearDisplay();
|
||||
#else
|
||||
if (n >= LCD_NUMBER_OF_LINES) {
|
||||
clearDisplay();
|
||||
} else {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
uint8_t len = (LCD_NUMBER_OF_LINES - n)*LCD_CHARACTERS_PER_LINE + 1;
|
||||
char str[len];
|
||||
readCharsFromLCD(1, 1, LCD_NUMBER_OF_LINES - n, LCD_CHARACTERS_PER_LINE, str, len);
|
||||
|
||||
for (uint8_t column = n + 1, i = 0; column <= LCD_NUMBER_OF_LINES; column++) {
|
||||
setCursorPosition(column , 1);
|
||||
for (uint8_t row = 1; row <= LCD_CHARACTERS_PER_LINE; row++) {
|
||||
loop_until_LCD_BF_clear();
|
||||
writeCharToLCD_(str[i++]);
|
||||
}
|
||||
}
|
||||
|
||||
// Add n newlines to top of screen
|
||||
for (uint8_t i = 1; i <= n; i++) {
|
||||
setCursorPosition(i, 1);
|
||||
eraseInline(2);
|
||||
}
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void saveCursorPosition() {
|
||||
saveCursorLineNum = currentLineNum;
|
||||
saveCursorLineChars = currentLineChars;
|
||||
}
|
||||
|
||||
void restoreCursorPosition() {
|
||||
currentLineNum = saveCursorLineNum;
|
||||
currentLineChars = saveCursorLineChars;
|
||||
writeLCDInstr(INSTR_DDRAM_ADDR | (lineBeginnings[currentLineNum] + currentLineChars));
|
||||
}
|
||||
|
||||
void hideCursor(void) {
|
||||
lcdState &= ~(1 << INSTR_DISPLAY_C);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void showCursor(void) {
|
||||
lcdState |= (1 << INSTR_DISPLAY_C);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
// Utility functions (with no associated ASCII or ANSI escape)
|
||||
|
||||
void blinkCursorOff(void) {
|
||||
lcdState &= ~(1 << INSTR_DISPLAY_B);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void blinkCursorOn(void) {
|
||||
lcdState |= (1 << INSTR_DISPLAY_B);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void displayOff(void) {
|
||||
lcdState &= ~(1 << INSTR_DISPLAY_D);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
void displayOn(void) {
|
||||
lcdState |= (1 << INSTR_DISPLAY_D);
|
||||
writeLCDInstr(INSTR_DISPLAY | lcdState);
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------------------
|
||||
|
||||
char readCharFromLCD(uint8_t row, uint8_t column) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
|
||||
setCursorPosition(row, column);
|
||||
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
char c = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
return c;
|
||||
}
|
||||
|
||||
void readLCDLine(uint8_t i, char* str) {
|
||||
readCharsFromLCD(i, 1, i, LCD_CHARACTERS_PER_LINE, str, LCD_CHARACTERS_PER_LINE + 1);
|
||||
}
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Advanced functions for special cases
|
||||
|
||||
void readCharsFromLCD(uint8_t from_row, uint8_t from_column, uint8_t to_row, uint8_t to_column, char* str, uint8_t len) {
|
||||
uint8_t old_row, old_column;
|
||||
getCursorPosition(&old_row, &old_column);
|
||||
setCursorPosition(from_row, from_column);
|
||||
|
||||
for (uint8_t i = 0; i < len - 1 && from_row <= to_row; i++) {
|
||||
if (from_row == LCD_NUMBER_OF_LINES && from_column == LCD_CHARACTERS_PER_LINE) {
|
||||
// Last character on screen
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
*(str++) = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
} else if (from_column == LCD_CHARACTERS_PER_LINE) { // End of line (but not last one)
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
*(str++) = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
from_row += 1;
|
||||
from_column = 1;
|
||||
setCursorPosition(from_row, from_column);
|
||||
} else {
|
||||
loop_until_LCD_BF_clear(); // Wait until LCD is ready for new instructions
|
||||
setLCDDBusAsInputs();
|
||||
*(str++) = readLCDDBusByte_();
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
from_column++;
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure array is terminated with null character
|
||||
*str = '\0';
|
||||
|
||||
setCursorPosition(old_row, old_column);
|
||||
setLCDDBusAsOutputs();
|
||||
}
|
||||
|
||||
/*
|
||||
Initialize LCD using the internal reset circuitry.
|
||||
|
||||
Note: This currently only works with 8 bit modes, but is not recommended. Instead use the
|
||||
initLCD function which uses the software initialization method and works for 8-bit
|
||||
modes as well the 4-bit mode.
|
||||
*/
|
||||
void initLCDByInternalReset(void) {
|
||||
setLCDDBusAsOutputs();
|
||||
|
||||
// Function set (8-bit interface; 2 lines with 5x7 dot character font)
|
||||
writeLCDInstr_(INSTR_FUNC_SET | (1 << INSTR_FUNC_SET_DL) | (1 << INSTR_FUNC_SET_N));
|
||||
|
||||
writeLCDInstr_(0x0F);
|
||||
writeLCDInstr_(0x06);
|
||||
writeLCDInstr_(CMD_CLEAR_DISPLAY);
|
||||
_delay_ms(LCD_CLEAR_DISPLAY_DELAY);
|
||||
}
|
||||
|
|
@ -1,328 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file lcdLib.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Sep 29, 2015
|
||||
* @brief Functions to initialize, and operate a character LCD.
|
||||
*/
|
||||
|
||||
#ifndef LCD_LIB_H
|
||||
#define LCD_LIB_H
|
||||
|
||||
// Includes -----------------------------------------------------------------------------------
|
||||
#include "lcd_instr.h"
|
||||
#include "lcdLibConfig.h"
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Library function declarations
|
||||
|
||||
/**
|
||||
Initialize the LCD display via software initialization as specified by the datasheet.
|
||||
*/
|
||||
void initLCD(void);
|
||||
|
||||
/**
|
||||
Writes a character to the LCD display at the current cursor position after the LCD display is
|
||||
ready for new data. Allows the following ASCII escapes: '\n', '\r', '\f' and '\b'; ignores
|
||||
ASCII escape '\a'.
|
||||
*/
|
||||
void writeCharToLCD(char);
|
||||
|
||||
/**
|
||||
Writes a string to the LCD starting from the current cursor position.
|
||||
*/
|
||||
void writeStringToLCD(char*);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// LCD command functions (all have associated ANSI escape)
|
||||
|
||||
/**
|
||||
Clears the display and positions the cursor in the top left of the LCD screen.
|
||||
*/
|
||||
void clearDisplay(void);
|
||||
|
||||
/**
|
||||
Brings the cursor the the top left of the LCD screen.
|
||||
*/
|
||||
void returnHome(void);
|
||||
|
||||
/**
|
||||
Gets the current row and column of the LCD cursor and sets given pointers row and column to
|
||||
their respective values. Note indexes start at 1.
|
||||
*/
|
||||
void getCursorPosition(uint8_t* row, uint8_t* column);
|
||||
|
||||
/**
|
||||
Using the given parameters row and column, sets the current row and column occupied by the LCD
|
||||
cursor. Note indexes start at 1.
|
||||
*/
|
||||
void setCursorPosition(uint8_t row, uint8_t column);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions up. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorUp(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions down. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorDown(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions forward. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorForward(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor n positions backwards. If the cursor is at the edge of the screen this has no effect.
|
||||
*/
|
||||
void moveCursorBackward(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor to the beginning of the line n lines down.
|
||||
*/
|
||||
void moveCursorNextLine(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor to the beginning of the line n lines up.
|
||||
*/
|
||||
void moveCursorPreviousLine(uint8_t n);
|
||||
|
||||
/**
|
||||
Moves the cursor to column n. If n is off screen go to the last line.
|
||||
*/
|
||||
void moveCursorToColumn(uint8_t n);
|
||||
|
||||
/**
|
||||
Scroll whole page up by n lines. New lines are added at the bottom.
|
||||
*/
|
||||
void scrollUp(uint8_t n);
|
||||
|
||||
/**
|
||||
Scroll whole page down by n lines. New lines are added at the top.
|
||||
*/
|
||||
void scrollDown(uint8_t n);
|
||||
|
||||
/**
|
||||
Saves the cursors current position.
|
||||
*/
|
||||
void saveCursorPosition(void);
|
||||
|
||||
/**
|
||||
Restores the last saved cursor position.
|
||||
*/
|
||||
void restoreCursorPosition(void);
|
||||
|
||||
/**
|
||||
Clears part or all of screen dependent on the value of n:
|
||||
0 or missing: clear from cursor to end of screen
|
||||
1: clear from cursor to end of screen
|
||||
2: clear entire screen
|
||||
*/
|
||||
void eraseDisplay(uint8_t n);
|
||||
|
||||
/**
|
||||
Erases part of a line dependent on the value of n:
|
||||
0 or missing: clear from cursor to end of the line
|
||||
1: clear from cursor to beginning of the line
|
||||
2: clear entire line
|
||||
*/
|
||||
void eraseInline(uint8_t n);
|
||||
|
||||
/**
|
||||
Hides the cursor
|
||||
*/
|
||||
void hideCursor(void);
|
||||
|
||||
/**
|
||||
Shows the cursor
|
||||
*/
|
||||
void showCursor(void);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Utility functions (with no associated ASCII or ANSI escape)
|
||||
|
||||
/**
|
||||
Turns the cursor blink off.
|
||||
*/
|
||||
void blinkCursorOff(void);
|
||||
|
||||
/**
|
||||
Turns the cursor blink on.
|
||||
*/
|
||||
void blinkCursorOn(void);
|
||||
|
||||
/**
|
||||
Turns the display off.
|
||||
*/
|
||||
void displayOff(void);
|
||||
|
||||
/**
|
||||
Turns the display on.
|
||||
*/
|
||||
void displayOn(void);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
Read a single character from the row and column given (1 based) returning the cursor to
|
||||
its previous original position.
|
||||
*/
|
||||
char readCharFromLCD(uint8_t row, uint8_t column);
|
||||
|
||||
/**
|
||||
Read a line i (ones based) into str.
|
||||
*/
|
||||
void readLCDLine(uint8_t i, char* str);
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Advanced functions for special cases
|
||||
|
||||
/**
|
||||
Read len characters from (from_row, from_column) to (to_row, to_column) returning the cursor
|
||||
to its original position after the read. Upon success (not overflowing the screen), 0 is
|
||||
returned; otherwise non zero will be returned. The str pointer will be updated with the
|
||||
characters read from the screen. Even in the case of failure, str may be partially populated.
|
||||
*/
|
||||
void readCharsFromLCD(uint8_t from_row, uint8_t from_column, uint8_t to_row, uint8_t to_column, char* str, uint8_t len);
|
||||
|
||||
/**
|
||||
Initialize the LCD display via its internal reset circuit.
|
||||
|
||||
Note: this is not the recommended way to initialize the LCD as it is unreliable and depends
|
||||
on the power supply. Preferably the software initialization method should be used (via
|
||||
the initLCD function).
|
||||
*/
|
||||
void initLCDByInternalReset(void);
|
||||
|
||||
|
||||
//---------------------------------------------------------------------------------------------
|
||||
// Mode and settings sanity check (preprocessor tests of lcdLibConfig.h)
|
||||
//---------------------------------------------------------------------------------------------
|
||||
|
||||
#if !defined(LCD_CHARACTERS_PER_LINE)
|
||||
#error "All modes require LCD_CHARACTERS_PER_LINE to be defined."
|
||||
#elif !defined(LCD_NUMBER_OF_LINES)
|
||||
#error "All modes require LCD_NUMBER_OF_LINES to be defined."
|
||||
#elif !defined(LCD_LINE_BEGINNINGS)
|
||||
#error "All modes require LCD_LINE_BEGINNINGS to be defined."
|
||||
#else
|
||||
|
||||
#if LCD_NUMBER_OF_LINES == 1
|
||||
#define LCD_LINES 0
|
||||
#else
|
||||
#define LCD_LINES (1 << INSTR_FUNC_SET_N)
|
||||
#endif
|
||||
|
||||
#define LCD_CHARACTERS_PER_SCREEN (LCD_CHARACTERS_PER_LINE * LCD_NUMBER_OF_LINES)
|
||||
#endif
|
||||
|
||||
#if !defined(LCD_FONT_5x8) &&\
|
||||
!defined(LCD_FONT_5x10)
|
||||
#error "All modes require LCD_FONT_5x8 or LCD_FONT_5x10 to be defined."
|
||||
#elif defined(LCD_FONT_5x8) && \
|
||||
defined(LCD_FONT_5x10)
|
||||
#error "LCD_FONT_5x8 and LCD_FONT_5x10 are mutually exclusive. Choose one."
|
||||
#elif defined(LCD_FONT_5x8)
|
||||
#define LCD_FONT 0
|
||||
#elif defined(LCD_FONT_5x10)
|
||||
#define LCD_FONT (1 << INSTR_FUNC_SET_F)
|
||||
#endif
|
||||
|
||||
#if !defined (LCD_RS) || \
|
||||
!defined (LCD_RS_PORT) || \
|
||||
!defined (LCD_RS_DDR) || \
|
||||
!defined (LCD_RW) || \
|
||||
!defined (LCD_RW_PORT) || \
|
||||
!defined (LCD_RW_DDR) || \
|
||||
!defined (LCD_ENABLE) || \
|
||||
!defined (LCD_ENABLE_PORT) || \
|
||||
!defined (LCD_ENABLE_DDR)
|
||||
#error "All modes require LCD_RS[,_PORT,_DDR], LCD_RW[,_PORT,_DDR], and LCD_ENABLE[,_PORT,_DDR] be defined."
|
||||
#endif
|
||||
|
||||
#if defined (EIGHT_BIT_ARBITRARY_PIN_MODE) && \
|
||||
defined (FOUR_BIT_MODE)
|
||||
#error "EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE are mutually exclusive. Choose one."
|
||||
#elif defined (EIGHT_BIT_ARBITRARY_PIN_MODE) || \
|
||||
defined (FOUR_BIT_MODE)
|
||||
|
||||
// EIGHT_BIT_ARBITRARY_PIN_MODE specific requirements
|
||||
#ifdef EIGHT_BIT_ARBITRARY_PIN_MODE
|
||||
#if !defined (LCD_DBUS0) || \
|
||||
!defined (LCD_DBUS0_PORT) || \
|
||||
!defined (LCD_DBUS0_DDR) || \
|
||||
!defined (LCD_DBUS0_PIN) || \
|
||||
!defined (LCD_DBUS1) || \
|
||||
!defined (LCD_DBUS1_PORT) || \
|
||||
!defined (LCD_DBUS1_DDR) || \
|
||||
!defined (LCD_DBUS1_PIN) || \
|
||||
!defined (LCD_DBUS2) || \
|
||||
!defined (LCD_DBUS2_PORT) || \
|
||||
!defined (LCD_DBUS2_DDR) || \
|
||||
!defined (LCD_DBUS2_PIN) || \
|
||||
!defined (LCD_DBUS3) || \
|
||||
!defined (LCD_DBUS3_PORT) || \
|
||||
!defined (LCD_DBUS3_DDR) || \
|
||||
!defined (LCD_DBUS3_PIN)
|
||||
#error "EIGHT_BIT_ARBITRARY_PIN_MODE require that LCD_DBUS*[,_PORT,_DDR,_PIN] be defined."
|
||||
#endif
|
||||
#endif
|
||||
|
||||
// Requirements for EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE
|
||||
#if !defined (LCD_DBUS4) || \
|
||||
!defined (LCD_DBUS4_PORT) || \
|
||||
!defined (LCD_DBUS4_DDR) || \
|
||||
!defined (LCD_DBUS4_PIN) || \
|
||||
!defined (LCD_DBUS5) || \
|
||||
!defined (LCD_DBUS5_PORT) || \
|
||||
!defined (LCD_DBUS5_DDR) || \
|
||||
!defined (LCD_DBUS5_PIN) || \
|
||||
!defined (LCD_DBUS6) || \
|
||||
!defined (LCD_DBUS6_PORT) || \
|
||||
!defined (LCD_DBUS6_DDR) || \
|
||||
!defined (LCD_DBUS6_PIN) || \
|
||||
!defined (LCD_DBUS7) || \
|
||||
!defined (LCD_DBUS7_PORT) || \
|
||||
!defined (LCD_DBUS7_DDR) || \
|
||||
!defined (LCD_DBUS7_PIN)
|
||||
#error "Both EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE require that LCD_DBUS*[,_PORT,_DDR,_PIN] be defined."
|
||||
#endif
|
||||
|
||||
// Set LCD_BF automatically for both EIGHT_BIT_ARBITRARY_PIN_MODE and FOUR_BIT_MODE
|
||||
#undef LCD_BF
|
||||
#define LCD_BF LCD_DBUS7
|
||||
|
||||
#else
|
||||
#if !defined (LCD_DBUS_PORT) || \
|
||||
!defined (LCD_DBUS_DDR) || \
|
||||
!defined (LCD_DBUS_PIN) || \
|
||||
!defined (LCD_BF)
|
||||
#error "Default mode requires that LCD_DBUS_[PORT,DDR,PIN] and LCD_BF be defined."
|
||||
#endif
|
||||
|
||||
#undef LCD_DBUS7_PORT
|
||||
#define LCD_DBUS7_PORT LCD_DBUS_PORT
|
||||
#undef LCD_DBUS7_DDR
|
||||
#define LCD_DBUS7_DDR LCD_DBUS_DDR
|
||||
#undef LCD_DBUS7_PIN
|
||||
#define LCD_DBUS7_PIN LCD_DBUS_PIN
|
||||
#endif
|
||||
|
||||
#endif /* LCD_LIB_H */
|
||||
|
|
@ -1 +0,0 @@
|
|||
../../lcdLibConfig.h
|
||||
|
|
@ -1,61 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file lcd_instr.h
|
||||
* @author Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* @date Oct 26, 2015
|
||||
* @brief Constant macro definitions of HD44780 compatible character LCD instruction set
|
||||
*/
|
||||
|
||||
/*
|
||||
LCD character display instructions
|
||||
*/
|
||||
|
||||
// Simple instructions with no options
|
||||
#define CMD_INIT 0x30
|
||||
#define CMD_INIT_FOUR_BIT 0x20
|
||||
#define CMD_CLEAR_DISPLAY 0x01
|
||||
#define CMD_RETURN_HOME 0x02
|
||||
|
||||
// Entry Set instruction and associated options
|
||||
#define INSTR_ENTRY_SET 0x04
|
||||
#define INSTR_ENTRY_SET_ID 1
|
||||
#define INSTR_ENTRY_SET_S 0
|
||||
|
||||
// Display control instruction and associated options
|
||||
#define INSTR_DISPLAY 0x08
|
||||
#define INSTR_DISPLAY_D 2
|
||||
#define INSTR_DISPLAY_C 1
|
||||
#define INSTR_DISPLAY_B 0
|
||||
|
||||
// Cursor or display shift instruction and associated options
|
||||
#define INSTR_MOV_SHIFT 0x10
|
||||
#define INSTR_MOV_SHIFT_SC 3
|
||||
#define INSTR_MOV_SHIFT_RL 2
|
||||
|
||||
// Function set instruction and associated options
|
||||
#define INSTR_FUNC_SET 0x20
|
||||
#define INSTR_FUNC_SET_DL 4
|
||||
#define INSTR_FUNC_SET_N 3
|
||||
#define INSTR_FUNC_SET_F 2
|
||||
|
||||
// Set CG RAM address instruction
|
||||
#define INSTR_CGRAM_ADDR 0x60
|
||||
|
||||
// Set DD RAM address instruction
|
||||
#define INSTR_DDRAM_ADDR 0x80
|
||||
|
|
@ -1,107 +0,0 @@
|
|||
/**
|
||||
* (C) Copyright Collin J. Doering 2015
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/**
|
||||
* File: uart_echo.c
|
||||
* Author: Collin J. Doering <collin.doering@rekahsoft.ca>
|
||||
* Date: Sep 17, 2015
|
||||
*/
|
||||
|
||||
/*---------.
|
||||
| Includes |
|
||||
`---------*/
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <avr/power.h>
|
||||
#include <util/delay.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "lcdLib.h"
|
||||
#include "ansi_escapes.h"
|
||||
#include "USART.h"
|
||||
|
||||
#define STATUS_LED_PORT PORTC
|
||||
#define STATUS_LED_DDR DDRC
|
||||
#define STATUS_LED PC5
|
||||
|
||||
//--------------------------------------------------
|
||||
|
||||
void flashLED(uint8_t times) {
|
||||
while (times > 0) {
|
||||
STATUS_LED_PORT |= 1 << STATUS_LED; // turn on status LED
|
||||
_delay_ms(100);
|
||||
STATUS_LED_PORT &= ~(1 << STATUS_LED); // turn status LED off
|
||||
_delay_ms(100);
|
||||
times--;
|
||||
}
|
||||
}
|
||||
|
||||
//--------------------------------------------------
|
||||
|
||||
int main(void) {
|
||||
clock_prescale_set(clock_div_1);
|
||||
|
||||
STATUS_LED_DDR |= 1 << STATUS_LED; // DEBUG
|
||||
|
||||
initUSART();
|
||||
char serialChar;
|
||||
|
||||
initLCD();
|
||||
//initLCDByInternalReset();
|
||||
flashLED(5); // DEBUG
|
||||
|
||||
while (1) {
|
||||
serialChar = receiveByte();
|
||||
|
||||
switch (serialChar) {
|
||||
case '\r':
|
||||
writeStringToLCD("\r\n");
|
||||
transmitString("\n" CNL(1) "\r");
|
||||
break;
|
||||
case '\f':
|
||||
writeCharToLCD(serialChar);
|
||||
transmitString(ED(2) CUP(1,1));
|
||||
break;
|
||||
case 0x7f: // Backspace (sent as delete)
|
||||
writeStringToLCD("\b \b");
|
||||
transmitString(CUB(1) " " CUB(1));
|
||||
break;
|
||||
case '\e': // Beginning of ANSI escape
|
||||
{
|
||||
char j = receiveByte();
|
||||
|
||||
if (j == '[') {
|
||||
char buf[11] = "\e[";
|
||||
for (uint8_t i = 2, j = receiveByte(); i < 10 && j > 0x20 && j < 0x7e; i++, j = receiveByte()) {
|
||||
buf[i] = j;
|
||||
if (j > 0x40 && j < 0x7e) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
writeStringToLCD(buf);
|
||||
}
|
||||
break;
|
||||
}
|
||||
default:
|
||||
writeCharToLCD(serialChar);
|
||||
transmitByte(serialChar); // Echo character back to serial console
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue