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LED drivers: switch to i2c_writeReg() (#22878)

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Ryan 2024-01-10 17:25:34 +11:00 • committed by GitHub
parent 7a3183b8c8
commit 58696a3937
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GPG key ID: 4AEE18F83AFDEB23
23 changed files with 172 additions and 477 deletions
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26
drivers/led/snled27351-mono.c
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@ -37,8 +37,6 @@
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
#endif
uint8_t i2c_transfer_buffer[20];
// 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.
@ -52,15 +50,12 @@ uint8_t g_led_control_registers[SNLED27351_DRIVER_COUNT][SNLED27351_LED_CONTROL_
bool g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT] = {false};
void snled27351_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
i2c_transfer_buffer[0] = reg;
i2c_transfer_buffer[1] = data;
#if SNLED27351_I2C_PERSISTENCE > 0
for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) {
if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) == 0) break;
if (i2c_writeReg(addr << 1, reg, &data, 1, SNLED27351_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
}
#else
i2c_transmit(addr << 1, i2c_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT);
i2c_writeReg(addr << 1, reg, &data, 1, SNLED27351_I2C_TIMEOUT);
#endif
}
@ -71,24 +66,15 @@ void snled27351_select_page(uint8_t addr, uint8_t page) {
void snled27351_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
// Assumes PG1 is already selected.
// 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 < SNLED27351_PWM_REGISTER_COUNT; i += 16) {
i2c_transfer_buffer[0] = i;
// 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.
for (int j = 0; j < 16; j++) {
i2c_transfer_buffer[1 + j] = pwm_buffer[i + j];
}
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, i2c_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) == 0) break;
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
i2c_transmit(addr << 1, i2c_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT);
i2c_writeReg(addr << 1, i, pwm_buffer + i, 16, SNLED27351_I2C_TIMEOUT);
#endif
}
}