mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-11-28 19:58:48 +06:00
251 lines
8.9 KiB
C
251 lines
8.9 KiB
C
/* Copyright 2021 @ Keychron (https://www.keychron.com)
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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 2 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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#include "snled27351-spi.h"
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#include "spi_master.h"
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#define SNLED27351_PWM_REGISTER_COUNT 192
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#define SNLED27351_LED_CONTROL_REGISTER_COUNT 24
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#ifndef SNLED27351_PHASE_CHANNEL
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# define SNLED27351_PHASE_CHANNEL MSKPHASE_12CHANNEL
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#endif
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#ifndef SNLED27351_CURRENT_TUNE
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# define SNLED27351_CURRENT_TUNE \
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{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
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#endif
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#define SNLED27351_WRITE (0 << 7)
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#define SNLED27351_READ (1 << 7)
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#define SNLED27351_PATTERN (2 << 4)
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#ifdef DRIVER_CS_PINS
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pin_t cs_pins[] = DRIVER_CS_PINS;
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#else
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error "no DRIVER_CS_PINS defined"
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#endif
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// These buffers match the snled27351 PWM registers.
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// The control buffers match the PG0 LED On/Off registers.
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// Storing them like this is optimal for I2C transfers to the registers.
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// We could optimize this and take out the unused registers from these
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// buffers and the transfers in snled27351_write_pwm_buffer() but it's
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// probably not worth the extra complexity.
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uint8_t g_pwm_buffer[SNLED27351_DRIVER_COUNT][SNLED27351_PWM_REGISTER_COUNT];
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bool g_pwm_buffer_update_required[SNLED27351_DRIVER_COUNT] = {false};
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uint8_t g_led_control_registers[SNLED27351_DRIVER_COUNT][SNLED27351_LED_CONTROL_REGISTER_COUNT] = {0};
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bool g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT] = {false};
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bool snled27351_write(uint8_t index, uint8_t page, uint8_t reg, uint8_t *data, uint8_t len) {
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static uint8_t spi_transfer_buffer[2] = {0};
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if (index > ARRAY_SIZE(((pin_t[])DRIVER_CS_PINS)) - 1) return false;
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if (!spi_start(cs_pins[index], false, 0, SNLED27351_SPI_DIVISOR)) {
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spi_stop();
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return false;
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}
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spi_transfer_buffer[0] = SNLED27351_WRITE | SNLED27351_PATTERN | (page & 0x0F);
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spi_transfer_buffer[1] = reg;
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if (spi_transmit(spi_transfer_buffer, 2) != SPI_STATUS_SUCCESS) {
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spi_stop();
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return false;
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}
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if (spi_transmit(data, len) != SPI_STATUS_SUCCESS) {
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spi_stop();
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return false;
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}
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spi_stop();
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return true;
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}
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bool snled27351_write_register(uint8_t index, uint8_t page, uint8_t reg, uint8_t data) {
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return snled27351_write(index, page, reg, &data, 1);
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}
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bool snled27351_write_pwm_buffer(uint8_t index, uint8_t *pwm_buffer) {
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if (g_pwm_buffer_update_required[index]) {
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snled27351_write(index, LED_PWM_PAGE, 0, g_pwm_buffer[index], SNLED27351_PWM_REGISTER_COUNT);
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}
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g_pwm_buffer_update_required[index] = false;
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return true;
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}
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void snled27351_init_drivers(void) {
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#if defined(LED_DRIVER_SHUTDOWN_PIN)
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setPinOutput(LED_DRIVER_SHUTDOWN_PIN);
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writePinHigh(LED_DRIVER_SHUTDOWN_PIN);
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#endif
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spi_init();
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for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
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snled27351_init(i);
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for (int index = 0; index < SNLED27351_LED_COUNT; index++) {
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snled27351_set_led_control_register(index, true, true, true);
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}
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for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
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snled27351_update_led_control_registers(i);
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}
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void snled27351_init(uint8_t index) {
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setPinOutput(cs_pins[index]);
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writePinHigh(cs_pins[index]);
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// Setting LED driver to shutdown mode
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snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_SHUT_DOWN_MODE);
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// Setting internal channel pulldown/pullup
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snled27351_write_register(index, FUNCTION_PAGE, PDU_REG, MSKSET_CA_CB_CHANNEL);
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// Select number of scan phase
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snled27351_write_register(index, FUNCTION_PAGE, SCAN_PHASE_REG, SNLED27351_PHASE_CHANNEL);
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// Setting PWM Delay Phase
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snled27351_write_register(index, FUNCTION_PAGE, SLEW_RATE_CONTROL_MODE1_REG, MSKPWM_DELAY_PHASE_ENABLE);
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// Setting Driving/Sinking Channel Slew Rate
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snled27351_write_register(index, FUNCTION_PAGE, SLEW_RATE_CONTROL_MODE2_REG, MSKDRIVING_SINKING_CHHANNEL_SLEWRATE_ENABLE);
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// Setting Iref
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snled27351_write_register(index, FUNCTION_PAGE, SOFTWARE_SLEEP_REG, MSKSLEEP_DISABLE);
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// Set LED CONTROL PAGE (Page 0)
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uint8_t on_off_reg[LED_CONTROL_ON_OFF_LENGTH] = {0};
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snled27351_write(index, LED_CONTROL_PAGE, 0, on_off_reg, LED_CONTROL_ON_OFF_LENGTH);
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// Set PWM PAGE (Page 1)
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uint8_t pwm_reg[LED_PWM_LENGTH];
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memset(pwm_reg, 0, LED_PWM_LENGTH);
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snled27351_write(index, LED_PWM_PAGE, 0, pwm_reg, LED_PWM_LENGTH);
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// Set CURRENT PAGE (Page 4)
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uint8_t current_tune_reg[LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE;
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snled27351_write(index, CURRENT_TUNE_PAGE, 0, current_tune_reg, LED_CURRENT_TUNE_LENGTH);
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// // Enable LEDs ON/OFF
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// memset(on_off_reg, 0xFF, LED_CONTROL_ON_OFF_LENGTH);
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// snled27351_write(index, LED_CONTROL_PAGE, 0, on_off_reg, LED_CONTROL_ON_OFF_LENGTH);
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// Setting LED driver to normal mode
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snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_NORMAL_MODE);
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}
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void snled27351_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
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snled27351_led_t led;
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if (index >= 0 && index < SNLED27351_LED_COUNT) {
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memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
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g_pwm_buffer[led.driver][led.r] = red;
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g_pwm_buffer[led.driver][led.g] = green;
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g_pwm_buffer[led.driver][led.b] = blue;
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g_pwm_buffer_update_required[led.driver] = true;
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}
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}
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void snled27351_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
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for (int i = 0; i < SNLED27351_LED_COUNT; i++) {
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snled27351_set_color(i, red, green, blue);
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}
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}
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void snled27351_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
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snled27351_led_t led;
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memcpy_P(&led, (&g_snled27351_leds[index]), sizeof(led));
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uint8_t control_register_r = led.r / 8;
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uint8_t control_register_g = led.g / 8;
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uint8_t control_register_b = led.b / 8;
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uint8_t bit_r = led.r % 8;
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uint8_t bit_g = led.g % 8;
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uint8_t bit_b = led.b % 8;
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if (red) {
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g_led_control_registers[led.driver][control_register_r] |= (1 << bit_r);
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} else {
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g_led_control_registers[led.driver][control_register_r] &= ~(1 << bit_r);
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}
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if (green) {
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g_led_control_registers[led.driver][control_register_g] |= (1 << bit_g);
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} else {
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g_led_control_registers[led.driver][control_register_g] &= ~(1 << bit_g);
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}
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if (blue) {
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g_led_control_registers[led.driver][control_register_b] |= (1 << bit_b);
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} else {
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g_led_control_registers[led.driver][control_register_b] &= ~(1 << bit_b);
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}
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g_led_control_registers_update_required[led.driver] = true;
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}
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void snled27351_update_pwm_buffers(uint8_t index) {
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if (g_pwm_buffer_update_required[index]) {
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if (!snled27351_write_pwm_buffer(index, g_pwm_buffer[index])) {
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g_led_control_registers_update_required[index] = true;
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}
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}
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g_pwm_buffer_update_required[index] = false;
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}
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void snled27351_update_led_control_registers(uint8_t index) {
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if (g_led_control_registers_update_required[index]) {
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snled27351_write(index, LED_CONTROL_PAGE, 0, g_led_control_registers[index], 24);
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}
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g_led_control_registers_update_required[index] = false;
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}
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void snled27351_flush(void) {
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for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
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snled27351_update_pwm_buffers(i);
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}
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void snled27351_shutdown(void) {
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# if defined(LED_DRIVER_SHUTDOWN_PIN)
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writePinLow(LED_DRIVER_SHUTDOWN_PIN);
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# else
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for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
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snled27351_sw_shutdown(i);
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# endif
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}
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void snled27351_exit_shutdown(void) {
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# if defined(LED_DRIVER_SHUTDOWN_PIN)
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writePinHigh(LED_DRIVER_SHUTDOWN_PIN);
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# else
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for (uint8_t i = 0; i < SNLED27351_DRIVER_COUNT; i++)
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snled27351_sw_return_normal(i);
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# endif
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}
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void snled27351_sw_return_normal(uint8_t index) {
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// Select to function page
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// Setting LED driver to normal mode
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snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_NORMAL_MODE);
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}
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void snled27351_sw_shutdown(uint8_t index) {
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// Select to function page
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// Setting LED driver to shutdown mode
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snled27351_write_register(index, FUNCTION_PAGE, CONFIGURATION_REG, MSKSW_SHUT_DOWN_MODE);
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// Write SW Sleep Register
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snled27351_write_register(index, FUNCTION_PAGE, SOFTWARE_SLEEP_REG, MSKSLEEP_ENABLE);
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}
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