From f7893b7f8810482fda25cb16fd806003a651de07 Mon Sep 17 00:00:00 2001 From: "Collin J. Doering" Date: Mon, 19 Oct 2015 04:58:03 -0400 Subject: [PATCH] Clean up and comment lcdLib.c Signed-off-by: Collin J. Doering --- lcdLib.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/lcdLib.c b/lcdLib.c index 179e939..b7686a0 100644 --- a/lcdLib.c +++ b/lcdLib.c @@ -13,7 +13,7 @@ * * You should have received a copy of the GNU General Public License * along with this program. If not, see . -*/ + */ /** * File: lcdLib.c @@ -141,7 +141,7 @@ void writeLCDByte_(uint8_t b) { and EIGHT_BIT_ARBITRARY_PIN_MODE, the given data is written in one cycle using the writeLCDByte_ function. In FOUR_BIT_MODE however, the given data is written in two cycles using two successive calls to the writeLCDNibble_ function. - */ +*/ void writeLCDInstr_(uint8_t instr) { LCD_RS_PORT &= ~(1 << LCD_RS); // RS=0 LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0 @@ -164,7 +164,7 @@ void writeLCDInstr(uint8_t instr) { the LCD. In the default 8-bit mode and EIGHT_BIT_ARBITRARY_PIN_MODE, the given data is written in one cycle using the writeLCDByte_ function. In FOUR_BIT_MODE however, the given data is written in two cycles using two successive calls to the writeLCDNibble_ function. - */ +*/ void writeCharToLCD_(char c) { LCD_RS_PORT |= (1 << LCD_RS); // RS=1 LCD_RW_PORT &= ~(1 << LCD_RW); // RW=0 @@ -181,18 +181,18 @@ void writeCharToLCD_(char c) { 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 + 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. + 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 @@ -259,7 +259,7 @@ void writeStringToLCD(const char* str) { /* 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); @@ -271,7 +271,7 @@ void clearDisplay(void) { /* 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); @@ -292,6 +292,8 @@ void returnHome(void) { /* return c; */ /* } */ +//----------------------------------------------------------------------------------------------- + /* Set all pins of LCD_DBUS, as well as pins LCD_RS, and LCD_RW as outputs */