diff options
Diffstat (limited to 'drivers/led/snled27351.c')
-rw-r--r-- | drivers/led/snled27351.c | 103 |
1 files changed, 41 insertions, 62 deletions
diff --git a/drivers/led/snled27351.c b/drivers/led/snled27351.c index 71992b7322..43b6982e00 100644 --- a/drivers/led/snled27351.c +++ b/drivers/led/snled27351.c @@ -37,9 +37,6 @@ { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF } #endif -// Transfer buffer for TWITransmitData() -uint8_t g_twi_transfer_buffer[65]; - // 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. @@ -52,53 +49,34 @@ bool g_pwm_buffer_update_required[SNLED27351_DRIVER_COUNT] = {false}; uint8_t g_led_control_registers[SNLED27351_DRIVER_COUNT][SNLED27351_LED_CONTROL_REGISTER_COUNT] = {0}; bool g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT] = {false}; -bool snled27351_write_register(uint8_t addr, uint8_t reg, uint8_t data) { - // If the transaction fails function returns false. - g_twi_transfer_buffer[0] = reg; - g_twi_transfer_buffer[1] = data; - +void snled27351_write_register(uint8_t addr, uint8_t reg, uint8_t data) { #if SNLED27351_I2C_PERSISTENCE > 0 for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) { - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } + if (i2c_writeReg(addr << 1, reg, &data, 1, SNLED27351_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; } #else - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } + i2c_writeReg(addr << 1, reg, &data, 1, SNLED27351_I2C_TIMEOUT); #endif - return true; } -bool snled27351_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) { +void snled27351_select_page(uint8_t addr, uint8_t page) { + snled27351_write_register(addr, SNLED27351_REG_COMMAND, page); +} + +void snled27351_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) { // Assumes PG1 is already selected. - // If any of the transactions fails function returns false. - // Transmit PWM registers in 3 transfers of 64 bytes. - - // Iterate over the pwm_buffer contents at 64 byte intervals. - for (uint8_t i = 0; i < SNLED27351_PWM_REGISTER_COUNT; i += 64) { - g_twi_transfer_buffer[0] = i; - // Copy the data from i to i+63. - // Device will auto-increment register for data after the first byte - // Thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer. - for (uint8_t j = 0; j < 64; j++) { - g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j]; - } + // 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 i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) { - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 65, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } + for (uint8_t j = 0; j < SNLED27351_I2C_PERSISTENCE; j++) { + if (i2c_writeReg(addr << 1, i, pwm_buffer + i, 16, SNLED27351_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; } #else - if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 65, SNLED27351_I2C_TIMEOUT) != 0) { - return false; - } + i2c_writeReg(addr << 1, i, pwm_buffer + i, 16, SNLED27351_I2C_TIMEOUT); #endif } - return true; } void snled27351_init_drivers(void) { @@ -132,8 +110,8 @@ void snled27351_init_drivers(void) { } void snled27351_init(uint8_t addr) { - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); + snled27351_select_page(addr, SNLED27351_COMMAND_FUNCTION); + // Setting LED driver to shutdown mode snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_SHUTDOWN); // Setting internal channel pulldown/pullup @@ -146,33 +124,34 @@ void snled27351_init(uint8_t addr) { snled27351_write_register(addr, 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(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SLEEP, 0); - // Set LED CONTROL PAGE (Page 0) - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_LED_CONTROL); + + snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL); + for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) { snled27351_write_register(addr, i, 0x00); } - // Set PWM PAGE (Page 1) - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_PWM); + snled27351_select_page(addr, SNLED27351_COMMAND_PWM); + for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) { snled27351_write_register(addr, i, 0x00); } - // Set CURRENT PAGE (Page 4) + snled27351_select_page(addr, SNLED27351_COMMAND_CURRENT_TUNE); + uint8_t current_tune_reg_list[SNLED27351_LED_CURRENT_TUNE_LENGTH] = SNLED27351_CURRENT_TUNE; - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_CURRENT_TUNE); for (int i = 0; i < SNLED27351_LED_CURRENT_TUNE_LENGTH; i++) { snled27351_write_register(addr, i, current_tune_reg_list[i]); } - // Enable LEDs ON/OFF - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_LED_CONTROL); + snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL); + for (int i = 0; i < SNLED27351_LED_CONTROL_ON_OFF_LENGTH; i++) { snled27351_write_register(addr, i, 0xFF); } - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); + snled27351_select_page(addr, SNLED27351_COMMAND_FUNCTION); + // Setting LED driver to normal mode snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_NORMAL); } @@ -185,6 +164,7 @@ void snled27351_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { 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[led.driver][led.r] = red; g_pwm_buffer[led.driver][led.g] = green; g_pwm_buffer[led.driver][led.b] = blue; @@ -230,25 +210,24 @@ void snled27351_set_led_control_register(uint8_t index, bool red, bool green, bo void snled27351_update_pwm_buffers(uint8_t addr, uint8_t index) { if (g_pwm_buffer_update_required[index]) { - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_PWM); + snled27351_select_page(addr, SNLED27351_COMMAND_PWM); - // If any of the transactions fail we risk writing dirty PG0, - // refresh page 0 just in case. - if (!snled27351_write_pwm_buffer(addr, g_pwm_buffer[index])) { - g_led_control_registers_update_required[index] = true; - } + snled27351_write_pwm_buffer(addr, g_pwm_buffer[index]); + + g_pwm_buffer_update_required[index] = false; } - g_pwm_buffer_update_required[index] = false; } void snled27351_update_led_control_registers(uint8_t addr, uint8_t index) { if (g_led_control_registers_update_required[index]) { - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_LED_CONTROL); - for (int i = 0; i < SNLED27351_LED_CONTROL_REGISTER_COUNT; i++) { + snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL); + + for (uint8_t i = 0; i < SNLED27351_LED_CONTROL_REGISTER_COUNT; i++) { snled27351_write_register(addr, i, g_led_control_registers[index][i]); } + + g_led_control_registers_update_required[index] = false; } - g_led_control_registers_update_required[index] = false; } void snled27351_flush(void) { @@ -265,15 +244,15 @@ void snled27351_flush(void) { } void snled27351_sw_return_normal(uint8_t addr) { - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); + snled27351_select_page(addr, SNLED27351_COMMAND_FUNCTION); + // Setting LED driver to normal mode snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_NORMAL); } void snled27351_sw_shutdown(uint8_t addr) { - // Select to function page - snled27351_write_register(addr, SNLED27351_REG_COMMAND, SNLED27351_COMMAND_FUNCTION); + snled27351_select_page(addr, SNLED27351_COMMAND_FUNCTION); + // Setting LED driver to shutdown mode snled27351_write_register(addr, SNLED27351_FUNCTION_REG_SOFTWARE_SHUTDOWN, SNLED27351_SOFTWARE_SHUTDOWN_SSD_SHUTDOWN); // Write SW Sleep Register |