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@ -18,6 +18,7 @@ |
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#include "is31fl3729.h" |
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#include "i2c_master.h" |
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#include "gpio.h" |
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#include "wait.h" |
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#define IS31FL3729_PWM_REGISTER_COUNT 143 |
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@ -39,26 +40,43 @@ |
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# define IS31FL3729_GLOBAL_CURRENT 0x40 |
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#endif |
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#ifndef IS31FL3729_PULLDOWNUP |
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# define IS31FL3729_PULLDOWNUP 0x33 |
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#ifndef IS31FL3729_SW_PULLDOWN |
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# define IS31FL3729_SW_PULLDOWN IS31FL3729_SW_PULLDOWN_2K_OHM_SW_OFF |
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#endif |
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#ifndef IS31FL3729_CS_PULLUP |
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# define IS31FL3729_CS_PULLUP IS31FL3729_CS_PULLUP_2K_OHM_CS_OFF |
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#endif |
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#ifndef IS31FL3729_SPREAD_SPECTRUM |
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# define IS31FL3729_SPREAD_SPECTRUM IS31FL3729_SSP_DISABLE |
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# define IS31FL3729_SPREAD_SPECTRUM IS31FL3729_SPREAD_SPECTRUM_DISABLE |
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#endif |
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#ifndef IS31FL3729_SPREAD_SPECTRUM_RANGE |
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# define IS31FL3729_SPREAD_SPECTRUM_RANGE IS31FL3729_RNG_5_PERCENT |
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# define IS31FL3729_SPREAD_SPECTRUM_RANGE IS31FL3729_SPREAD_SPECTRUM_RANGE_5_PERCENT |
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#endif |
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#ifndef IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME |
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# define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME IS31FL3729_CLT_1980_US |
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# define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME_1980_US |
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#endif |
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#ifndef IS31FL3729_PWM_FREQUENCY |
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# define IS31FL3729_PWM_FREQUENCY IS31FL3729_PWM_FREQUENCY_32K_HZ |
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#endif |
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const uint8_t i2c_addresses[IS31FL3729_DRIVER_COUNT] = { |
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IS31FL3729_I2C_ADDRESS_1, |
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#ifdef IS31FL3729_I2C_ADDRESS_2 |
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IS31FL3729_I2C_ADDRESS_2, |
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# ifdef IS31FL3729_I2C_ADDRESS_3 |
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IS31FL3729_I2C_ADDRESS_3, |
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# ifdef IS31FL3729_I2C_ADDRESS_4 |
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IS31FL3729_I2C_ADDRESS_4, |
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# endif |
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# endif |
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#endif |
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}; |
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// These buffers match the PWM & scaling registers. |
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// Storing them like this is optimal for I2C transfers to the registers. |
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typedef struct is31fl3729_driver_t { |
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@ -75,27 +93,27 @@ is31fl3729_driver_t driver_buffers[IS31FL3729_DRIVER_COUNT] = {{ |
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.scaling_buffer_dirty = false, |
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}}; |
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void is31fl3729_write_register(uint8_t addr, uint8_t reg, uint8_t data) { |
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void is31fl3729_write_register(uint8_t index, uint8_t reg, uint8_t data) { |
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#if IS31FL3729_I2C_PERSISTENCE > 0 |
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for (uint8_t i = 0; i < IS31FL3729_I2C_PERSISTENCE; i++) { |
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if (i2c_write_register(addr << 1, reg, &data, 1, IS31FL3729_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; |
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if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3729_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; |
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} |
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#else |
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i2c_write_register(addr << 1, reg, &data, 1, IS31FL3729_I2C_TIMEOUT); |
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i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3729_I2C_TIMEOUT); |
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#endif |
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} |
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void is31fl3729_write_pwm_buffer(uint8_t addr, uint8_t index) { |
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// Transmit PWM registers in 9 transfers of 16 bytes. |
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void is31fl3729_write_pwm_buffer(uint8_t index) { |
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// Transmit PWM registers in 11 transfers of 13 bytes. |
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// Iterate over the pwm_buffer contents at 16 byte intervals. |
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for (uint8_t i = 0; i <= IS31FL3729_PWM_REGISTER_COUNT; i += 16) { |
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// Iterate over the pwm_buffer contents at 13 byte intervals. |
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for (uint8_t i = 0; i <= IS31FL3729_PWM_REGISTER_COUNT; i += 13) { |
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#if IS31FL3729_I2C_PERSISTENCE > 0 |
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for (uint8_t j = 0; j < IS31FL3729_I2C_PERSISTENCE; j++) { |
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if (i2c_write_register(addr << 1, i, driver_buffers[index].pwm_buffer + i, 16, IS31FL3729_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; |
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if (i2c_write_register(i2c_addresses[index] << 1, IS31FL3729_REG_PWM + i, driver_buffers[index].pwm_buffer + i, 13, IS31FL3729_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break; |
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} |
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#else |
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i2c_write_register(addr << 1, i, driver_buffers[index].pwm_buffer + i, 16, IS31FL3729_I2C_TIMEOUT); |
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i2c_write_register(i2c_addresses[index] << 1, IS31FL3729_REG_PWM + i, driver_buffers[index].pwm_buffer + i, 13, IS31FL3729_I2C_TIMEOUT); |
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#endif |
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} |
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} |
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@ -103,53 +121,35 @@ void is31fl3729_write_pwm_buffer(uint8_t addr, uint8_t index) { |
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void is31fl3729_init_drivers(void) { |
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i2c_init(); |
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is31fl3729_init(IS31FL3729_I2C_ADDRESS_1); |
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#if defined(IS31FL3729_I2C_ADDRESS_2) |
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is31fl3729_init(IS31FL3729_I2C_ADDRESS_2); |
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# if defined(IS31FL3729_I2C_ADDRESS_3) |
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is31fl3729_init(IS31FL3729_I2C_ADDRESS_3); |
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# if defined(IS31FL3729_I2C_ADDRESS_4) |
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is31fl3729_init(IS31FL3729_I2C_ADDRESS_4); |
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# endif |
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# endif |
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#if defined(IS31FL3729_SDB_PIN) |
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gpio_set_pin_output(IS31FL3729_SDB_PIN); |
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gpio_write_pin_high(IS31FL3729_SDB_PIN); |
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#endif |
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for (uint8_t i = 0; i < IS31FL3729_DRIVER_COUNT; i++) { |
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is31fl3729_init(i); |
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} |
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for (int i = 0; i < IS31FL3729_LED_COUNT; i++) { |
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is31fl3729_set_scaling_register(i, 0xFF, 0xFF, 0xFF); |
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} |
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is31fl3729_update_scaling_registers(IS31FL3729_I2C_ADDRESS_1, 0); |
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#if defined(IS31FL3729_I2C_ADDRESS_2) |
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is31fl3729_update_scaling_registers(IS31FL3729_I2C_ADDRESS_2, 1); |
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# if defined(IS31FL3729_I2C_ADDRESS_3) |
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is31fl3729_update_scaling_registers(IS31FL3729_I2C_ADDRESS_3, 2); |
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# if defined(IS31FL3729_I2C_ADDRESS_4) |
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is31fl3729_update_scaling_registers(IS31FL3729_I2C_ADDRESS_4, 3); |
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# endif |
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# endif |
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#endif |
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for (uint8_t i = 0; i < IS31FL3729_DRIVER_COUNT; i++) { |
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is31fl3729_update_scaling_registers(i); |
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} |
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} |
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void is31fl3729_init(uint8_t addr) { |
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void is31fl3729_init(uint8_t index) { |
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// In order to avoid the LEDs being driven with garbage data |
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// in the LED driver's PWM registers, shutdown is enabled last. |
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// Set up the mode and other settings, clear the PWM registers, |
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// then disable software shutdown. |
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// Set Pull up & Down for SWx CSy |
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is31fl3729_write_register(addr, IS31FL3729_REG_PULLDOWNUP, IS31FL3729_PULLDOWNUP); |
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// Set Spread Spectrum Register if applicable |
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is31fl3729_write_register(addr, IS31FL3729_REG_SPREAD_SPECTRUM, ((IS31FL3729_SPREAD_SPECTRUM & 0b1) << 4) | ((IS31FL3729_SPREAD_SPECTRUM_RANGE & 0b11) << 2) | (IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME & 0b11)); |
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// Set PWM Frequency Register if applicable |
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is31fl3729_write_register(addr, IS31FL3729_REG_PWM_FREQUENCY, IS31FL3729_PWM_FREQUENCY); |
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// Set Golbal Current Control Register |
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is31fl3729_write_register(addr, IS31FL3729_REG_GLOBAL_CURRENT, IS31FL3729_GLOBAL_CURRENT); |
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// Set to Normal operation |
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is31fl3729_write_register(addr, IS31FL3729_REG_CONFIGURATION, IS31FL3729_CONFIGURATION); |
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is31fl3729_write_register(index, IS31FL3729_REG_PULLDOWNUP, ((IS31FL3729_SW_PULLDOWN & 0b111) << 4) | (IS31FL3729_CS_PULLUP & 0b111)); |
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is31fl3729_write_register(index, IS31FL3729_REG_SPREAD_SPECTRUM, ((IS31FL3729_SPREAD_SPECTRUM & 0b1) << 4) | ((IS31FL3729_SPREAD_SPECTRUM_RANGE & 0b11) << 2) | (IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME & 0b11)); |
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is31fl3729_write_register(index, IS31FL3729_REG_PWM_FREQUENCY, IS31FL3729_PWM_FREQUENCY); |
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is31fl3729_write_register(index, IS31FL3729_REG_GLOBAL_CURRENT, IS31FL3729_GLOBAL_CURRENT); |
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is31fl3729_write_register(index, IS31FL3729_REG_CONFIGURATION, IS31FL3729_CONFIGURATION); |
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// Wait 10ms to ensure the device has woken up. |
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wait_ms(10); |
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@ -194,18 +194,18 @@ void is31fl3729_set_scaling_register(uint8_t index, uint8_t red, uint8_t green, |
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driver_buffers[led.driver].scaling_buffer_dirty = true; |
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} |
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void is31fl3729_update_pwm_buffers(uint8_t addr, uint8_t index) { |
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void is31fl3729_update_pwm_buffers(uint8_t index) { |
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if (driver_buffers[index].pwm_buffer_dirty) { |
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is31fl3729_write_pwm_buffer(addr, index); |
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is31fl3729_write_pwm_buffer(index); |
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driver_buffers[index].pwm_buffer_dirty = false; |
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} |
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} |
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void is31fl3729_update_scaling_registers(uint8_t addr, uint8_t index) { |
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void is31fl3729_update_scaling_registers(uint8_t index) { |
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if (driver_buffers[index].scaling_buffer_dirty) { |
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for (uint8_t i = 0; i < IS31FL3729_SCALING_REGISTER_COUNT; i++) { |
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is31fl3729_write_register(addr, IS31FL3729_REG_SCALING + i, driver_buffers[index].scaling_buffer[i]); |
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is31fl3729_write_register(index, IS31FL3729_REG_SCALING + i, driver_buffers[index].scaling_buffer[i]); |
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} |
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driver_buffers[index].scaling_buffer_dirty = false; |
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@ -213,14 +213,7 @@ void is31fl3729_update_scaling_registers(uint8_t addr, uint8_t index) { |
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} |
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void is31fl3729_flush(void) { |
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is31fl3729_update_pwm_buffers(IS31FL3729_I2C_ADDRESS_1, 0); |
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#if defined(IS31FL3729_I2C_ADDRESS_2) |
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is31fl3729_update_pwm_buffers(IS31FL3729_I2C_ADDRESS_2, 1); |
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# if defined(IS31FL3729_I2C_ADDRESS_3) |
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is31fl3729_update_pwm_buffers(IS31FL3729_I2C_ADDRESS_3, 2); |
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# if defined(IS31FL3729_I2C_ADDRESS_4) |
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is31fl3729_update_pwm_buffers(IS31FL3729_I2C_ADDRESS_4, 3); |
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# endif |
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# endif |
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#endif |
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for (uint8_t i = 0; i < IS31FL3729_DRIVER_COUNT; i++) { |
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is31fl3729_update_pwm_buffers(i); |
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} |
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} |