diff options
Diffstat (limited to 'drivers/led/issi/is31fl3236.c')
-rw-r--r-- | drivers/led/issi/is31fl3236.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/led/issi/is31fl3236.c b/drivers/led/issi/is31fl3236.c new file mode 100644 index 0000000000..b8aa9c34b1 --- /dev/null +++ b/drivers/led/issi/is31fl3236.c @@ -0,0 +1,172 @@ +// Copyright 2024 QMK +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "is31fl3236.h" +#include "i2c_master.h" +#include "gpio.h" + +#define IS31FL3236_PWM_REGISTER_COUNT 36 +#define IS31FL3236_LED_CONTROL_REGISTER_COUNT 36 + +#ifndef IS31FL3236_I2C_TIMEOUT +# define IS31FL3236_I2C_TIMEOUT 100 +#endif + +#ifndef IS31FL3236_I2C_PERSISTENCE +# define IS31FL3236_I2C_PERSISTENCE 0 +#endif + +#ifndef IS31FL3236_PWM_FREQUENCY +# define IS31FL3236_PWM_FREQUENCY IS31FL3236_PWM_FREQUENCY_3K_HZ // OFS - IS31FL3236A only +#endif + +const uint8_t i2c_addresses[IS31FL3236_DRIVER_COUNT] = { + IS31FL3236_I2C_ADDRESS_1, +#ifdef IS31FL3236_I2C_ADDRESS_2 + IS31FL3236_I2C_ADDRESS_2, +# ifdef IS31FL3236_I2C_ADDRESS_3 + IS31FL3236_I2C_ADDRESS_3, +# ifdef IS31FL3236_I2C_ADDRESS_4 + IS31FL3236_I2C_ADDRESS_4, +# endif +# endif +#endif +}; + +typedef struct is31fl3236_driver_t { + uint8_t pwm_buffer[IS31FL3236_PWM_REGISTER_COUNT]; + bool pwm_buffer_dirty; + uint8_t led_control_buffer[IS31FL3236_LED_CONTROL_REGISTER_COUNT]; + bool led_control_buffer_dirty; +} PACKED is31fl3236_driver_t; + +is31fl3236_driver_t driver_buffers[IS31FL3236_DRIVER_COUNT] = {{ + .pwm_buffer = {0}, + .pwm_buffer_dirty = false, + .led_control_buffer = {0}, + .led_control_buffer_dirty = false, +}}; + +void is31fl3236_write_register(uint8_t index, uint8_t reg, uint8_t data) { +#if IS31FL3236_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3236_I2C_PERSISTENCE; i++) { + if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3236_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3236_I2C_TIMEOUT); +#endif +} + +void is31fl3236_write_pwm_buffer(uint8_t index) { +#if IS31FL3236_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3236_I2C_PERSISTENCE; i++) { + if (i2c_write_register(i2c_addresses[index] << 1, IS31FL3236_REG_PWM, driver_buffers[index].pwm_buffer, 36, IS31FL3236_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; + } +#else + i2c_write_register(i2c_addresses[index] << 1, IS31FL3236_REG_PWM, driver_buffers[index].pwm_buffer, 36, IS31FL3236_I2C_TIMEOUT); +#endif +} + +void is31fl3236_init_drivers(void) { + i2c_init(); + +#if defined(IS31FL3236_SDB_PIN) + gpio_set_pin_output(IS31FL3236_SDB_PIN); + gpio_write_pin_high(IS31FL3236_SDB_PIN); +#endif + + for (uint8_t i = 0; i < IS31FL3236_DRIVER_COUNT; i++) { + is31fl3236_init(i); + } + + for (uint8_t i = 0; i < IS31FL3236_LED_COUNT; i++) { + is31fl3236_set_led_control_register(i, true, true, true); + } + + for (uint8_t i = 0; i < IS31FL3236_DRIVER_COUNT; i++) { + is31fl3236_update_led_control_registers(i); + } +} + +void is31fl3236_init(uint8_t index) { + // In case we ever want to reinitialize (?) + is31fl3236_write_register(index, IS31FL3236_REG_RESET, 0x00); + + // Turn off software shutdown + is31fl3236_write_register(index, IS31FL3236_REG_SHUTDOWN, 0x01); + + // Set all PWM values to zero + for (uint8_t i = 0; i < IS31FL3236_PWM_REGISTER_COUNT; i++) { + is31fl3236_write_register(index, IS31FL3236_REG_PWM + i, 0x00); + } + + // turn off all LEDs in the LED control register + for (uint8_t i = 0; i < IS31FL3236_LED_CONTROL_REGISTER_COUNT; i++) { + is31fl3236_write_register(index, IS31FL3236_REG_LED_CONTROL + i, 0x00); + } + + // Set PWM frequency (IS31FL3236A) + is31fl3236_write_register(index, IS31FL3236_REG_PWM_FREQUENCY, IS31FL3236_PWM_FREQUENCY); + + // Load PWM registers and LED Control register data + is31fl3236_write_register(index, IS31FL3236_REG_UPDATE, 0x01); +} + +void is31fl3236_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { + is31fl3236_led_t led; + + if (index < IS31FL3236_LED_COUNT) { + memcpy_P(&led, (&g_is31fl3236_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 is31fl3236_set_color_all(uint8_t red, uint8_t green, uint8_t blue) { + for (uint8_t i = 0; i < IS31FL3236_LED_COUNT; i++) { + is31fl3236_set_color(i, red, green, blue); + } +} + +void is31fl3236_set_led_control_register(uint8_t index, bool red, bool green, bool blue) { + is31fl3236_led_t led; + memcpy_P(&led, (&g_is31fl3236_leds[index]), sizeof(led)); + + driver_buffers[led.driver].led_control_buffer[led.r] = red ? 0x01 : 0x00; + driver_buffers[led.driver].led_control_buffer[led.g] = green ? 0x01 : 0x00; + driver_buffers[led.driver].led_control_buffer[led.b] = blue ? 0x01 : 0x00; + driver_buffers[led.driver].led_control_buffer_dirty = true; +} + +void is31fl3236_update_pwm_buffers(uint8_t index) { + if (driver_buffers[index].pwm_buffer_dirty) { + is31fl3236_write_pwm_buffer(index); + // Load PWM registers and LED Control register data + is31fl3236_write_register(index, IS31FL3236_REG_UPDATE, 0x01); + + driver_buffers[index].pwm_buffer_dirty = false; + } +} + +void is31fl3236_update_led_control_registers(uint8_t index) { + if (driver_buffers[index].led_control_buffer_dirty) { + for (uint8_t i = 0; i < IS31FL3236_LED_CONTROL_REGISTER_COUNT; i++) { + is31fl3236_write_register(index, IS31FL3236_REG_LED_CONTROL + i, driver_buffers[index].led_control_buffer[i]); + } + + driver_buffers[index].led_control_buffer_dirty = false; + } +} + +void is31fl3236_flush(void) { + for (uint8_t i = 0; i < IS31FL3236_DRIVER_COUNT; i++) { + is31fl3236_update_pwm_buffers(i); + } +} |