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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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+
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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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+
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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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+
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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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-
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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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-
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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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-
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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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-
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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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}
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