From a88dd675bf3e1dedac2ceb7df779e0fb6931948a Mon Sep 17 00:00:00 2001 From: Ryan Date: Mon, 1 Jan 2024 19:31:44 +1100 Subject: LED drivers: extract IS31FL3745 from IS31COMMON (#22636) --- drivers/led/issi/is31fl3745.c | 220 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 drivers/led/issi/is31fl3745.c (limited to 'drivers/led/issi/is31fl3745.c') diff --git a/drivers/led/issi/is31fl3745.c b/drivers/led/issi/is31fl3745.c new file mode 100644 index 0000000000..563fe3c115 --- /dev/null +++ b/drivers/led/issi/is31fl3745.c @@ -0,0 +1,220 @@ +#include "is31fl3745.h" +#include +#include "i2c_master.h" +#include "wait.h" + +#define IS31FL3745_PWM_REGISTER_COUNT 144 +#define IS31FL3745_SCALING_REGISTER_COUNT 144 + +#ifndef IS31FL3745_I2C_TIMEOUT +# define IS31FL3745_I2C_TIMEOUT 100 +#endif + +#ifndef IS31FL3745_I2C_PERSISTENCE +# define IS31FL3745_I2C_PERSISTENCE 0 +#endif + +#ifndef IS31FL3745_CONFIGURATION +# define IS31FL3745_CONFIGURATION 0x31 +#endif + +#ifndef IS31FL3745_SW_PULLDOWN +# define IS31FL3745_SW_PULLDOWN IS31FL3745_PDR_2K_OHM_SW_OFF +#endif + +#ifndef IS31FL3745_CS_PULLUP +# define IS31FL3745_CS_PULLUP IS31FL3745_PUR_2K_OHM_CS_OFF +#endif + +#ifndef IS31FL3745_GLOBAL_CURRENT +# define IS31FL3745_GLOBAL_CURRENT 0xFF +#endif + +#ifndef IS31FL3745_SYNC_1 +# define IS31FL3745_SYNC_1 IS31FL3745_SYNC_NONE +#endif +#ifndef IS31FL3745_SYNC_2 +# define IS31FL3745_SYNC_2 IS31FL3745_SYNC_NONE +#endif +#ifndef IS31FL3745_SYNC_3 +# define IS31FL3745_SYNC_3 IS31FL3745_SYNC_NONE +#endif +#ifndef IS31FL3745_SYNC_4 +# define IS31FL3745_SYNC_4 IS31FL3745_SYNC_NONE +#endif + +uint8_t i2c_transfer_buffer[20] = {0xFF}; + +uint8_t g_pwm_buffer[IS31FL3745_DRIVER_COUNT][IS31FL3745_PWM_REGISTER_COUNT]; +bool g_pwm_buffer_update_required[IS31FL3745_DRIVER_COUNT] = {false}; +bool g_scaling_registers_update_required[IS31FL3745_DRIVER_COUNT] = {false}; + +uint8_t g_scaling_registers[IS31FL3745_DRIVER_COUNT][IS31FL3745_SCALING_REGISTER_COUNT]; + +void is31fl3745_write_register(uint8_t addr, uint8_t reg, uint8_t data) { + i2c_transfer_buffer[0] = reg; + i2c_transfer_buffer[1] = data; + +#if IS31FL3745_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3745_I2C_PERSISTENCE; i++) { + if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, IS31FL3745_I2C_TIMEOUT) == 0) break; + } +#else + i2c_transmit(addr << 1, i2c_transfer_buffer, 2, IS31FL3745_I2C_TIMEOUT); +#endif +} + +void is31fl3745_select_page(uint8_t addr, uint8_t page) { + is31fl3745_write_register(addr, IS31FL3745_REG_COMMAND_WRITE_LOCK, IS31FL3745_COMMAND_WRITE_LOCK_MAGIC); + is31fl3745_write_register(addr, IS31FL3745_REG_COMMAND, page); +} + +void is31fl3745_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) { + // Assumes page 0 is already selected. + // If any of the transactions fails function returns false. + // Transmit PWM registers in 12 transfers of 16 bytes. + // i2c_transfer_buffer[] is 20 bytes + + // Iterate over the pwm_buffer contents at 16 byte intervals. + for (int i = 0; i < IS31FL3745_PWM_REGISTER_COUNT; i += 16) { + i2c_transfer_buffer[0] = i + 1; + // Copy the data from i to i+15. + // Device will auto-increment register for data after the first byte + // Thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer. + memcpy(i2c_transfer_buffer + 1, pwm_buffer + i, 16); + +#if IS31FL3745_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3745_I2C_PERSISTENCE; i++) { + if (i2c_transmit(addr << 1, i2c_transfer_buffer, 17, IS31FL3745_I2C_TIMEOUT) != 0) break; + } +#else + i2c_transmit(addr << 1, i2c_transfer_buffer, 17, IS31FL3745_I2C_TIMEOUT); +#endif + } +} + +void is31fl3745_init_drivers(void) { + i2c_init(); + + is31fl3745_init(IS31FL3745_I2C_ADDRESS_1, IS31FL3745_SYNC_1); +#if defined(IS31FL3745_I2C_ADDRESS_2) + is31fl3745_init(IS31FL3745_I2C_ADDRESS_2, IS31FL3745_SYNC_2); +# if defined(IS31FL3745_I2C_ADDRESS_3) + is31fl3745_init(IS31FL3745_I2C_ADDRESS_3, IS31FL3745_SYNC_3); +# if defined(IS31FL3745_I2C_ADDRESS_4) + is31fl3745_init(IS31FL3745_I2C_ADDRESS_4, IS31FL3745_SYNC_4); +# endif +# endif +#endif + + for (int i = 0; i < IS31FL3745_LED_COUNT; i++) { + is31fl3745_set_scaling_register(i, 0xFF, 0xFF, 0xFF); + } + + is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_1, 0); +#if defined(IS31FL3745_I2C_ADDRESS_2) + is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_2, 1); +# if defined(IS31FL3745_I2C_ADDRESS_3) + is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_3, 2); +# if defined(IS31FL3745_I2C_ADDRESS_4) + is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_4, 3); +# endif +# endif +#endif +} + +void is31fl3745_init(uint8_t addr, uint8_t sync) { + // In order to avoid the LEDs being driven with garbage data + // in the LED driver's PWM registers, shutdown is enabled last. + // Set up the mode and other settings, clear the PWM registers, + // then disable software shutdown. + + is31fl3745_select_page(addr, IS31FL3745_COMMAND_SCALING); + + // Turn off all LEDs. + for (int i = 0; i < IS31FL3745_SCALING_REGISTER_COUNT; i++) { + is31fl3745_write_register(addr, i + 1, 0x00); + } + + is31fl3745_select_page(addr, IS31FL3745_COMMAND_PWM); + + for (int i = 0; i < IS31FL3745_PWM_REGISTER_COUNT; i++) { + is31fl3745_write_register(addr, i + 1, 0x00); + } + + is31fl3745_select_page(addr, IS31FL3745_COMMAND_FUNCTION); + + is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_PULLDOWNUP, (IS31FL3745_SW_PULLDOWN << 4) | IS31FL3745_CS_PULLUP); + is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3745_GLOBAL_CURRENT); + is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_SPREAD_SPECTRUM, (sync & 0b11) << 6); + is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_CONFIGURATION, IS31FL3745_CONFIGURATION); + + // Wait 10ms to ensure the device has woken up. + wait_ms(10); +} + +void is31fl3745_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { + is31fl3745_led_t led; + if (index >= 0 && index < IS31FL3745_LED_COUNT) { + memcpy_P(&led, (&g_is31fl3745_leds[index]), sizeof(led)); + + if (g_pwm_buffer[led.driver][led.r] == red && g_pwm_buffer[led.driver][led.g] == green && g_pwm_buffer[led.driver][led.b] == blue) { + return; + } + g_pwm_buffer_update_required[led.driver] = true; + g_pwm_buffer[led.driver][led.r] = red; + g_pwm_buffer[led.driver][led.g] = green; + g_pwm_buffer[led.driver][led.b] = blue; + } +} + +void is31fl3745_set_color_all(uint8_t red, uint8_t green, uint8_t blue) { + for (int i = 0; i < IS31FL3745_LED_COUNT; i++) { + is31fl3745_set_color(i, red, green, blue); + } +} + +void is31fl3745_set_scaling_register(uint8_t index, uint8_t red, uint8_t green, uint8_t blue) { + is31fl3745_led_t led; + memcpy_P(&led, (&g_is31fl3745_leds[index]), sizeof(led)); + + g_scaling_registers[led.driver][led.r] = red; + g_scaling_registers[led.driver][led.g] = green; + g_scaling_registers[led.driver][led.b] = blue; + + g_scaling_registers_update_required[led.driver] = true; +} + +void is31fl3745_update_pwm_buffers(uint8_t addr, uint8_t index) { + if (g_pwm_buffer_update_required[index]) { + is31fl3745_select_page(addr, IS31FL3745_COMMAND_PWM); + + is31fl3745_write_pwm_buffer(addr, g_pwm_buffer[index]); + } + + g_pwm_buffer_update_required[index] = false; +} + +void is31fl3745_update_scaling_registers(uint8_t addr, uint8_t index) { + if (g_scaling_registers_update_required[index]) { + is31fl3745_select_page(addr, IS31FL3745_COMMAND_SCALING); + + for (int i = 0; i < IS31FL3745_SCALING_REGISTER_COUNT; i++) { + is31fl3745_write_register(addr, i + 1, g_scaling_registers[index][i]); + } + g_scaling_registers_update_required[index] = false; + } +} + +void is31fl3745_flush(void) { + is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_1, 0); +#if defined(IS31FL3745_I2C_ADDRESS_2) + is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_2, 1); +# if defined(IS31FL3745_I2C_ADDRESS_3) + is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_3, 2); +# if defined(IS31FL3745_I2C_ADDRESS_4) + is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_4, 3); +# endif +# endif +#endif +} -- cgit v1.2.3