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qmk-firmware/quantum/via.c

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/* Copyright 2019 Jason Williams (Wilba)
*
* 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 2 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/>.
*/
#ifndef RAW_ENABLE
# error "RAW_ENABLE is not enabled"
#endif
#ifndef DYNAMIC_KEYMAP_ENABLE
# error "DYNAMIC_KEYMAP_ENABLE is not enabled"
#endif
// If VIA_CUSTOM_LIGHTING_ENABLE is not defined, then VIA_QMK_BACKLIGHT_ENABLE is set
// if BACKLIGHT_ENABLE is set, so handling of QMK Backlight values happens here by default.
// if VIA_CUSTOM_LIGHTING_ENABLE is defined, then VIA_QMK_BACKLIGHT_ENABLE must be explicitly
// set in keyboard-level config.h, so handling of QMK Backlight values happens here
#if defined(BACKLIGHT_ENABLE) && !defined(VIA_CUSTOM_LIGHTING_ENABLE)
# define VIA_QMK_BACKLIGHT_ENABLE
#endif
// If VIA_CUSTOM_LIGHTING_ENABLE is not defined, then VIA_QMK_RGBLIGHT_ENABLE is set
// if RGBLIGHT_ENABLE is set, so handling of QMK RGBLIGHT values happens here by default.
// If VIA_CUSTOM_LIGHTING_ENABLE is defined, then VIA_QMK_RGBLIGHT_ENABLE must be explicitly
// set in keyboard-level config.h, so handling of QMK RGBLIGHT values happens here
#if defined(RGBLIGHT_ENABLE) && !defined(VIA_CUSTOM_LIGHTING_ENABLE)
# define VIA_QMK_RGBLIGHT_ENABLE
#endif
#include "quantum.h"
#include "via.h"
#include "raw_hid.h"
#include "dynamic_keymap.h"
#include "tmk_core/common/eeprom.h"
#include "version.h" // for QMK_BUILDDATE used in EEPROM magic
// Forward declare some helpers.
#if defined(VIA_QMK_BACKLIGHT_ENABLE)
void via_qmk_backlight_set_value(uint8_t *data);
void via_qmk_backlight_get_value(uint8_t *data);
#endif
#if defined(VIA_QMK_RGBLIGHT_ENABLE)
void via_qmk_rgblight_set_value(uint8_t *data);
void via_qmk_rgblight_get_value(uint8_t *data);
#endif
// Can be called in an overriding via_init_kb() to test if keyboard level code usage of
// EEPROM is invalid and use/save defaults.
bool via_eeprom_is_valid(void) {
char * p = QMK_BUILDDATE; // e.g. "2019-11-05-11:29:54"
uint8_t magic0 = ((p[2] & 0x0F) << 4) | (p[3] & 0x0F);
uint8_t magic1 = ((p[5] & 0x0F) << 4) | (p[6] & 0x0F);
uint8_t magic2 = ((p[8] & 0x0F) << 4) | (p[9] & 0x0F);
return (eeprom_read_byte((void *)VIA_EEPROM_MAGIC_ADDR + 0) == magic0 && eeprom_read_byte((void *)VIA_EEPROM_MAGIC_ADDR + 1) == magic1 && eeprom_read_byte((void *)VIA_EEPROM_MAGIC_ADDR + 2) == magic2);
}
// Sets VIA/keyboard level usage of EEPROM to valid/invalid
// Keyboard level code (eg. via_init_kb()) should not call this
void via_eeprom_set_valid(bool valid) {
char * p = QMK_BUILDDATE; // e.g. "2019-11-05-11:29:54"
uint8_t magic0 = ((p[2] & 0x0F) << 4) | (p[3] & 0x0F);
uint8_t magic1 = ((p[5] & 0x0F) << 4) | (p[6] & 0x0F);
uint8_t magic2 = ((p[8] & 0x0F) << 4) | (p[9] & 0x0F);
eeprom_update_byte((void *)VIA_EEPROM_MAGIC_ADDR + 0, valid ? magic0 : 0xFF);
eeprom_update_byte((void *)VIA_EEPROM_MAGIC_ADDR + 1, valid ? magic1 : 0xFF);
eeprom_update_byte((void *)VIA_EEPROM_MAGIC_ADDR + 2, valid ? magic2 : 0xFF);
}
// Flag QMK and VIA/keyboard level EEPROM as invalid.
// Used in bootmagic_lite() and VIA command handler.
// Keyboard level code should not need to call this.
void via_eeprom_reset(void) {
// Set the VIA specific EEPROM state as invalid.
via_eeprom_set_valid(false);
// Set the TMK/QMK EEPROM state as invalid.
eeconfig_disable();
}
// Override this at the keyboard code level to check
// VIA's EEPROM valid state and reset to defaults as needed.
// Used by keyboards that store their own state in EEPROM,
// for backlight, rotary encoders, etc.
// The override should not set via_eeprom_set_valid(true) as
// the caller also needs to check the valid state.
__attribute__((weak)) void via_init_kb(void) {}
// Called by QMK core to initialize dynamic keymaps etc.
void via_init(void) {
// Let keyboard level test EEPROM valid state,
// but not set it valid, it is done here.
via_init_kb();
// If the EEPROM has the magic, the data is good.
// OK to load from EEPROM.
if (via_eeprom_is_valid()) {
} else {
// This resets the layout options
via_set_layout_options(0);
// This resets the keymaps in EEPROM to what is in flash.
dynamic_keymap_reset();
// This resets the macros in EEPROM to nothing.
dynamic_keymap_macro_reset();
// Save the magic number last, in case saving was interrupted
via_eeprom_set_valid(true);
}
}
// This is generalized so the layout options EEPROM usage can be
// variable, between 1 and 4 bytes.
uint32_t via_get_layout_options(void) {
uint32_t value = 0;
// Start at the most significant byte
void *source = (void *)(VIA_EEPROM_LAYOUT_OPTIONS_ADDR);
for (uint8_t i = 0; i < VIA_EEPROM_LAYOUT_OPTIONS_SIZE; i++) {
value = value << 8;
value |= eeprom_read_byte(source);
source++;
}
return value;
}
void via_set_layout_options(uint32_t value) {
// Start at the least significant byte
void *target = (void *)(VIA_EEPROM_LAYOUT_OPTIONS_ADDR + VIA_EEPROM_LAYOUT_OPTIONS_SIZE - 1);
for (uint8_t i = 0; i < VIA_EEPROM_LAYOUT_OPTIONS_SIZE; i++) {
eeprom_update_byte(target, value & 0xFF);
value = value >> 8;
target--;
}
}
// Called by QMK core to process VIA-specific keycodes.
bool process_record_via(uint16_t keycode, keyrecord_t *record) {
// Handle macros
if (record->event.pressed) {
if (keycode >= MACRO00 && keycode <= MACRO15) {
uint8_t id = keycode - MACRO00;
dynamic_keymap_macro_send(id);
return false;
}
}
// TODO: ideally this would be generalized and refactored into
// QMK core as advanced keycodes, until then, the simple case
// can be available here to keyboards using VIA
switch (keycode) {
case FN_MO13:
if (record->event.pressed) {
layer_on(1);
update_tri_layer(1, 2, 3);
} else {
layer_off(1);
update_tri_layer(1, 2, 3);
}
return false;
break;
case FN_MO23:
if (record->event.pressed) {
layer_on(2);
update_tri_layer(1, 2, 3);
} else {
layer_off(2);
update_tri_layer(1, 2, 3);
}
return false;
break;
}
return true;
}
// Keyboard level code can override this to handle custom messages from VIA.
// See raw_hid_receive() implementation.
// DO NOT call raw_hid_send() in the overide function.
__attribute__((weak)) void raw_hid_receive_kb(uint8_t *data, uint8_t length) {
uint8_t *command_id = &(data[0]);
*command_id = id_unhandled;
}
// VIA handles received HID messages first, and will route to
// raw_hid_receive_kb() for command IDs that are not handled here.
// This gives the keyboard code level the ability to handle the command
// specifically.
//
// raw_hid_send() is called at the end, with the same buffer, which was
// possibly modified with returned values.
void raw_hid_receive(uint8_t *data, uint8_t length) {
uint8_t *command_id = &(data[0]);
uint8_t *command_data = &(data[1]);
switch (*command_id) {
case id_get_protocol_version: {
command_data[0] = VIA_PROTOCOL_VERSION >> 8;
command_data[1] = VIA_PROTOCOL_VERSION & 0xFF;
break;
}
case id_get_keyboard_value: {
switch (command_data[0]) {
case id_uptime: {
uint32_t value = timer_read32();
command_data[1] = (value >> 24) & 0xFF;
command_data[2] = (value >> 16) & 0xFF;
command_data[3] = (value >> 8) & 0xFF;
command_data[4] = value & 0xFF;
break;
}
case id_layout_options: {
uint32_t value = via_get_layout_options();
command_data[1] = (value >> 24) & 0xFF;
command_data[2] = (value >> 16) & 0xFF;
command_data[3] = (value >> 8) & 0xFF;
command_data[4] = value & 0xFF;
break;
}
case id_switch_matrix_state: {
#if ((MATRIX_COLS / 8 + 1) * MATRIX_ROWS <= 28)
uint8_t i = 1;
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
matrix_row_t value = matrix_get_row(row);
# if (MATRIX_COLS > 24)
command_data[i++] = (value >> 24) & 0xFF;
# endif
# if (MATRIX_COLS > 16)
command_data[i++] = (value >> 16) & 0xFF;
# endif
# if (MATRIX_COLS > 8)
command_data[i++] = (value >> 8) & 0xFF;
# endif
command_data[i++] = value & 0xFF;
}
#endif
break;
}
default: {
raw_hid_receive_kb(data, length);
break;
}
}
break;
}
case id_set_keyboard_value: {
switch (command_data[0]) {
case id_layout_options: {
uint32_t value = ((uint32_t)command_data[1] << 24) | ((uint32_t)command_data[2] << 16) | ((uint32_t)command_data[3] << 8) | (uint32_t)command_data[4];
via_set_layout_options(value);
break;
}
default: {
raw_hid_receive_kb(data, length);
break;
}
}
break;
}
case id_dynamic_keymap_get_keycode: {
uint16_t keycode = dynamic_keymap_get_keycode(command_data[0], command_data[1], command_data[2]);
command_data[3] = keycode >> 8;
command_data[4] = keycode & 0xFF;
break;
}
case id_dynamic_keymap_set_keycode: {
dynamic_keymap_set_keycode(command_data[0], command_data[1], command_data[2], (command_data[3] << 8) | command_data[4]);
break;
}
case id_dynamic_keymap_reset: {
dynamic_keymap_reset();
break;
}
case id_lighting_set_value: {
#if defined(VIA_QMK_BACKLIGHT_ENABLE)
via_qmk_backlight_set_value(command_data);
#endif
#if defined(VIA_QMK_RGBLIGHT_ENABLE)
via_qmk_rgblight_set_value(command_data);
#endif
#if defined(VIA_CUSTOM_LIGHTING_ENABLE)
raw_hid_receive_kb(data, length);
#endif
#if !defined(VIA_QMK_BACKLIGHT_ENABLE) && !defined(VIA_QMK_RGBLIGHT_ENABLE) && !defined(VIA_CUSTOM_LIGHTING_ENABLE)
// Return the unhandled state
*command_id = id_unhandled;
#endif
break;
}
case id_lighting_get_value: {
#if defined(VIA_QMK_BACKLIGHT_ENABLE)
via_qmk_backlight_get_value(command_data);
#endif
#if defined(VIA_QMK_RGBLIGHT_ENABLE)
via_qmk_rgblight_get_value(command_data);
#endif
#if defined(VIA_CUSTOM_LIGHTING_ENABLE)
raw_hid_receive_kb(data, length);
#endif
#if !defined(VIA_QMK_BACKLIGHT_ENABLE) && !defined(VIA_QMK_RGBLIGHT_ENABLE) && !defined(VIA_CUSTOM_LIGHTING_ENABLE)
// Return the unhandled state
*command_id = id_unhandled;
#endif
break;
}
case id_lighting_save: {
#if defined(VIA_QMK_BACKLIGHT_ENABLE)
eeconfig_update_backlight_current();
#endif
#if defined(VIA_QMK_RGBLIGHT_ENABLE)
eeconfig_update_rgblight_current();
#endif
#if defined(VIA_CUSTOM_LIGHTING_ENABLE)
raw_hid_receive_kb(data, length);
#endif
#if !defined(VIA_QMK_BACKLIGHT_ENABLE) && !defined(VIA_QMK_RGBLIGHT_ENABLE) && !defined(VIA_CUSTOM_LIGHTING_ENABLE)
// Return the unhandled state
*command_id = id_unhandled;
#endif
break;
}
case id_dynamic_keymap_macro_get_count: {
command_data[0] = dynamic_keymap_macro_get_count();
break;
}
case id_dynamic_keymap_macro_get_buffer_size: {
uint16_t size = dynamic_keymap_macro_get_buffer_size();
command_data[0] = size >> 8;
command_data[1] = size & 0xFF;
break;
}
case id_dynamic_keymap_macro_get_buffer: {
uint16_t offset = (command_data[0] << 8) | command_data[1];
uint16_t size = command_data[2]; // size <= 28
dynamic_keymap_macro_get_buffer(offset, size, &command_data[3]);
break;
}
case id_dynamic_keymap_macro_set_buffer: {
uint16_t offset = (command_data[0] << 8) | command_data[1];
uint16_t size = command_data[2]; // size <= 28
dynamic_keymap_macro_set_buffer(offset, size, &command_data[3]);
break;
}
case id_dynamic_keymap_macro_reset: {
dynamic_keymap_macro_reset();
break;
}
case id_dynamic_keymap_get_layer_count: {
command_data[0] = dynamic_keymap_get_layer_count();
break;
}
case id_dynamic_keymap_get_buffer: {
uint16_t offset = (command_data[0] << 8) | command_data[1];
uint16_t size = command_data[2]; // size <= 28
dynamic_keymap_get_buffer(offset, size, &command_data[3]);
break;
}
case id_dynamic_keymap_set_buffer: {
uint16_t offset = (command_data[0] << 8) | command_data[1];
uint16_t size = command_data[2]; // size <= 28
dynamic_keymap_set_buffer(offset, size, &command_data[3]);
break;
}
case id_eeprom_reset: {
via_eeprom_reset();
break;
}
case id_bootloader_jump: {
// Need to send data back before the jump
// Informs host that the command is handled
raw_hid_send(data, length);
// Give host time to read it
wait_ms(100);
bootloader_jump();
break;
}
default: {
// The command ID is not known
// Return the unhandled state
*command_id = id_unhandled;
break;
}
}
// Return the same buffer, optionally with values changed
// (i.e. returning state to the host, or the unhandled state).
raw_hid_send(data, length);
}
#if defined(VIA_QMK_BACKLIGHT_ENABLE)
# if BACKLIGHT_LEVELS == 0
# error BACKLIGHT_LEVELS == 0
# endif
void via_qmk_backlight_get_value(uint8_t *data) {
uint8_t *value_id = &(data[0]);
uint8_t *value_data = &(data[1]);
switch (*value_id) {
case id_qmk_backlight_brightness: {
// level / BACKLIGHT_LEVELS * 255
value_data[0] = ((uint16_t)get_backlight_level()) * 255 / BACKLIGHT_LEVELS;
break;
}
case id_qmk_backlight_effect: {
# ifdef BACKLIGHT_BREATHING
value_data[0] = is_backlight_breathing() ? 1 : 0;
# else
value_data[0] = 0;
# endif
break;
}
}
}
void via_qmk_backlight_set_value(uint8_t *data) {
uint8_t *value_id = &(data[0]);
uint8_t *value_data = &(data[1]);
switch (*value_id) {
case id_qmk_backlight_brightness: {
// level / 255 * BACKLIGHT_LEVELS
backlight_level_noeeprom(((uint16_t)value_data[0]) * BACKLIGHT_LEVELS / 255);
break;
}
case id_qmk_backlight_effect: {
# ifdef BACKLIGHT_BREATHING
if (value_data[0] == 0) {
backlight_disable_breathing();
} else {
backlight_enable_breathing();
}
# endif
break;
}
}
}
#endif // #if defined(VIA_QMK_BACKLIGHT_ENABLE)
#if defined(VIA_QMK_RGBLIGHT_ENABLE)
void via_qmk_rgblight_get_value(uint8_t *data) {
uint8_t *value_id = &(data[0]);
uint8_t *value_data = &(data[1]);
switch (*value_id) {
case id_qmk_rgblight_brightness: {
value_data[0] = rgblight_get_val();
break;
}
case id_qmk_rgblight_effect: {
value_data[0] = rgblight_get_mode();
break;
}
case id_qmk_rgblight_effect_speed: {
value_data[0] = rgblight_get_speed();
break;
}
case id_qmk_rgblight_color: {
value_data[0] = rgblight_get_hue();
value_data[1] = rgblight_get_sat();
break;
}
}
}
void via_qmk_rgblight_set_value(uint8_t *data) {
uint8_t *value_id = &(data[0]);
uint8_t *value_data = &(data[1]);
switch (*value_id) {
case id_qmk_rgblight_brightness: {
rgblight_sethsv_noeeprom(rgblight_get_hue(), rgblight_get_sat(), value_data[0]);
break;
}
case id_qmk_rgblight_effect: {
rgblight_mode_noeeprom(value_data[0]);
if (value_data[0] == 0) {
rgblight_disable_noeeprom();
} else {
rgblight_enable_noeeprom();
}
break;
}
case id_qmk_rgblight_effect_speed: {
rgblight_set_speed_noeeprom(value_data[0]);
break;
}
case id_qmk_rgblight_color: {
rgblight_sethsv_noeeprom(value_data[0], value_data[1], rgblight_get_val());
break;
}
}
}
#endif // #if defined(VIA_QMK_RGBLIGHT_ENABLE)
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