mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-14 22:00:53 +00:00
267 lines
9.8 KiB
C
267 lines
9.8 KiB
C
/* Copyright 2021 @ Keychron (https://www.keychron.com)
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#include "snled27351.h"
|
|
#include "i2c_master.h"
|
|
#include "gpio.h"
|
|
|
|
#define SNLED27351_PWM_REGISTER_COUNT 192
|
|
#define SNLED27351_LED_CONTROL_REGISTER_COUNT 24
|
|
|
|
#ifndef SNLED27351_I2C_TIMEOUT
|
|
# define SNLED27351_I2C_TIMEOUT 100
|
|
#endif
|
|
|
|
#ifndef SNLED27351_I2C_PERSISTENCE
|
|
# define SNLED27351_I2C_PERSISTENCE 0
|
|
#endif
|
|
|
|
#ifndef SNLED27351_PHASE_CHANNEL
|
|
# define SNLED27351_PHASE_CHANNEL SNLED27351_SCAN_PHASE_12_CHANNEL
|
|
#endif
|
|
|
|
#ifndef SNLED27351_CURRENT_TUNE
|
|
# define SNLED27351_CURRENT_TUNE \
|
|
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
|
|
#endif
|
|
|
|
const uint8_t i2c_addresses[SNLED27351_DRIVER_COUNT] = {
|
|
SNLED27351_I2C_ADDRESS_1,
|
|
#ifdef SNLED27351_I2C_ADDRESS_2
|
|
SNLED27351_I2C_ADDRESS_2,
|
|
# ifdef SNLED27351_I2C_ADDRESS_3
|
|
SNLED27351_I2C_ADDRESS_3,
|
|
# ifdef SNLED27351_I2C_ADDRESS_4
|
|
SNLED27351_I2C_ADDRESS_4,
|
|
# endif
|
|
# endif
|
|
#endif
|
|
};
|
|
|
|
// These buffers match the SNLED27351 PWM registers.
|
|
// The control buffers match the PG0 LED On/Off registers.
|
|
// Storing them like this is optimal for I2C transfers to the registers.
|
|
// We could optimize this and take out the unused registers from these
|
|
// buffers and the transfers in snled27351_write_pwm_buffer() but it's
|
|
// probably not worth the extra complexity.
|
|
typedef struct snled27351_driver_t {
|
|
uint8_t pwm_buffer[SNLED27351_PWM_REGISTER_COUNT];
|
|
bool pwm_buffer_dirty;
|
|
uint8_t led_control_buffer[SNLED27351_LED_CONTROL_REGISTER_COUNT];
|
|
bool led_control_buffer_dirty;
|
|
} PACKED snled27351_driver_t;
|
|
|
|
snled27351_driver_t driver_buffers[SNLED27351_DRIVER_COUNT] = {{
|
|
.pwm_buffer = {0},
|
|
.pwm_buffer_dirty = false,
|
|
.led_control_buffer = {0},
|
|
.led_control_buffer_dirty = false,
|
|
}};
|
|
|
|
void snled27351_write_register(uint8_t index, uint8_t reg, uint8_t data) {
|
|
#if SNLED27351_I2C_PERSISTENCE > 0
|
|
for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, SNLED27351_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, SNLED27351_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
|
|
void snled27351_select_page(uint8_t index, uint8_t page) {
|
|
snled27351_write_register(index, SNLED27351_REG_COMMAND, page);
|
|
}
|
|
|
|
void snled27351_write_pwm_buffer(uint8_t index) {
|
|
// Assumes PG1 is already selected.
|
|
// Transmit PWM registers in 12 transfers of 16 bytes.
|
|
|
|
// Iterate over the pwm_buffer contents at 16 byte intervals.
|
|
for (uint8_t i = 0; i < SNLED27351_PWM_REGISTER_COUNT; i += 16) {
|
|
#if SNLED27351_I2C_PERSISTENCE > 0
|
|
for (uint8_t j = 0; j < SNLED27351_I2C_PERSISTENCE; j++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer + i, 16, SNLED27351_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer + i, 16, SNLED27351_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void snled27351_init_drivers(void) {
|
|
i2c_init();
|
|
|
|
#if defined(SNLED27351_SDB_PIN)
|
|
gpio_set_pin_output(SNLED27351_SDB_PIN);
|
|
gpio_write_pin_high(SNLED27351_SDB_PIN);
|
|
#endif
|
|
|
|
for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++) {
|
|
snled27351_init(i);
|
|
}
|
|
|
|
for (int i = 0; i < SNLED27351_LED_COUNT; i++) {
|
|
snled27351_set_led_control_register(i, true, true, true);
|
|
}
|
|
|
|
for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++) {
|
|
snled27351_update_led_control_registers(i);
|
|
}
|
|
}
|
|
|
|
void snled27351_init(uint8_t index) {
|
|
snled27351_select_page(index, SNLED27351_COMMAND_FUNCTION);
|
|
|
|
// Setting LED driver to shutdown mode
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_SHUTDOWN);
|
|
// Setting internal channel pulldown/pullup
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_PULLDOWNUP, SNLED27351_PULLDOWNUP_ALL_ENABLED);
|
|
// Select number of scan phase
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SCAN_PHASE, SNLED27351_PHASE_CHANNEL);
|
|
// Setting PWM Delay Phase
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SLEW_RATE_CONTROL_MODE_1, SNLED27351_SLEW_RATE_CONTROL_MODE_1_PDP_ENABLE);
|
|
// Setting Driving/Sinking Channel Slew Rate
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SLEW_RATE_CONTROL_MODE_2, SNLED27351_SLEW_RATE_CONTROL_MODE_2_DSL_ENABLE | SNLED27351_SLEW_RATE_CONTROL_MODE_2_SSL_ENABLE);
|
|
// Setting Iref
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SOFTWARE_SLEEP, 0);
|
|
|
|
snled27351_select_page(index, SNLED27351_COMMAND_LED_CONTROL);
|
|
|
|
for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) {
|
|
snled27351_write_register(index, i, 0x00);
|
|
}
|
|
|
|
snled27351_select_page(index, SNLED27351_COMMAND_PWM);
|
|
|
|
for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) {
|
|
snled27351_write_register(index, i, 0x00);
|
|
}
|
|
|
|
snled27351_select_page(index, SNLED27351_COMMAND_CURRENT_TUNE);
|
|
|
|
uint8_t current_tune_reg_list[SNLED27351_LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE;
|
|
for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) {
|
|
snled27351_write_register(index, i, current_tune_reg_list[i]);
|
|
}
|
|
|
|
snled27351_select_page(index, SNLED27351_COMMAND_LED_CONTROL);
|
|
|
|
for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) {
|
|
snled27351_write_register(index, i, 0xFF);
|
|
}
|
|
|
|
snled27351_select_page(index, SNLED27351_COMMAND_FUNCTION);
|
|
|
|
// Setting LED driver to normal mode
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_NORMAL);
|
|
}
|
|
|
|
void snled27351_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
|
|
snled27351_led_t led;
|
|
if (index >= 0 && index < SNLED27351_LED_COUNT) {
|
|
memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
|
|
|
|
if (driver_buffers[led.driver].pwm_buffer[led.r] == red && driver_buffers[led.driver].pwm_buffer[led.g] == green && driver_buffers[led.driver].pwm_buffer[led.b] == blue) {
|
|
return;
|
|
}
|
|
|
|
driver_buffers[led.driver].pwm_buffer[led.r] = red;
|
|
driver_buffers[led.driver].pwm_buffer[led.g] = green;
|
|
driver_buffers[led.driver].pwm_buffer[led.b] = blue;
|
|
driver_buffers[led.driver].pwm_buffer_dirty = true;
|
|
}
|
|
}
|
|
|
|
void snled27351_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
|
|
for (int i = 0; i < SNLED27351_LED_COUNT; i++) {
|
|
snled27351_set_color(i, red, green, blue);
|
|
}
|
|
}
|
|
|
|
void snled27351_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
|
|
snled27351_led_t led;
|
|
memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
|
|
|
|
uint8_t control_register_r = led.r / 8;
|
|
uint8_t control_register_g = led.g / 8;
|
|
uint8_t control_register_b = led.b / 8;
|
|
uint8_t bit_r = led.r % 8;
|
|
uint8_t bit_g = led.g % 8;
|
|
uint8_t bit_b = led.b % 8;
|
|
|
|
if (red) {
|
|
driver_buffers[led.driver].led_control_buffer[control_register_r] |= (1 << bit_r);
|
|
} else {
|
|
driver_buffers[led.driver].led_control_buffer[control_register_r] &= ~(1 << bit_r);
|
|
}
|
|
if (green) {
|
|
driver_buffers[led.driver].led_control_buffer[control_register_g] |= (1 << bit_g);
|
|
} else {
|
|
driver_buffers[led.driver].led_control_buffer[control_register_g] &= ~(1 << bit_g);
|
|
}
|
|
if (blue) {
|
|
driver_buffers[led.driver].led_control_buffer[control_register_b] |= (1 << bit_b);
|
|
} else {
|
|
driver_buffers[led.driver].led_control_buffer[control_register_b] &= ~(1 << bit_b);
|
|
}
|
|
|
|
driver_buffers[led.driver].led_control_buffer_dirty = true;
|
|
}
|
|
|
|
void snled27351_update_pwm_buffers(uint8_t index) {
|
|
if (driver_buffers[index].pwm_buffer_dirty) {
|
|
snled27351_select_page(index, SNLED27351_COMMAND_PWM);
|
|
|
|
snled27351_write_pwm_buffer(index);
|
|
|
|
driver_buffers[index].pwm_buffer_dirty = false;
|
|
}
|
|
}
|
|
|
|
void snled27351_update_led_control_registers(uint8_t index) {
|
|
if (driver_buffers[index].led_control_buffer_dirty) {
|
|
snled27351_select_page(index, SNLED27351_COMMAND_LED_CONTROL);
|
|
|
|
for (uint8_t i = 0; i < SNLED27351_LED_CONTROL_REGISTER_COUNT; i++) {
|
|
snled27351_write_register(index, i, driver_buffers[index].led_control_buffer[i]);
|
|
}
|
|
|
|
driver_buffers[index].led_control_buffer_dirty = false;
|
|
}
|
|
}
|
|
|
|
void snled27351_flush(void) {
|
|
for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++) {
|
|
snled27351_update_pwm_buffers(i);
|
|
}
|
|
}
|
|
|
|
void snled27351_sw_return_normal(uint8_t index) {
|
|
snled27351_select_page(index, SNLED27351_COMMAND_FUNCTION);
|
|
|
|
// Setting LED driver to normal mode
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_NORMAL);
|
|
}
|
|
|
|
void snled27351_sw_shutdown(uint8_t index) {
|
|
snled27351_select_page(index, SNLED27351_COMMAND_FUNCTION);
|
|
|
|
// Setting LED driver to shutdown mode
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_SHUTDOWN);
|
|
// Write SW Sleep Register
|
|
snled27351_write_register(index, SNLED27351_FUNCTION_REG_SOFTWARE_SLEEP, SNLED27351_SOFTWARE_SLEEP_ENABLE);
|
|
}
|