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path: root/drivers/led/snled27351-simple.c
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Diffstat (limited to 'drivers/led/snled27351-simple.c')
-rw-r--r--drivers/led/snled27351-simple.c62
1 files changed, 34 insertions, 28 deletions
diff --git a/drivers/led/snled27351-simple.c b/drivers/led/snled27351-simple.c
index b2054c96d5..7b7a82f90f 100644
--- a/drivers/led/snled27351-simple.c
+++ b/drivers/led/snled27351-simple.c
@@ -37,8 +37,7 @@
{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
#endif
-// Transfer buffer for TWITransmitData()
-uint8_t g_twi_transfer_buffer[20];
+uint8_t i2c_transfer_buffer[20];
// These buffers match the SNLED27351 PWM registers.
// The control buffers match the PG0 LED On/Off registers.
@@ -54,47 +53,51 @@ bool g_led_control_registers_update_required[SNLED27351_DRIVER_COUNT]
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;
+ 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, g_twi_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) {
return false;
}
}
#else
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, SNLED27351_I2C_TIMEOUT) != 0) {
return false;
}
#endif
return true;
}
+void snled27351_select_page(uint8_t addr, uint8_t page) {
+ snled27351_write_register(addr, SNLED27351_REG_COMMAND, page);
+}
+
bool 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 12 transfers of 16 bytes.
- // g_twi_transfer_buffer[] is 20 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) {
- g_twi_transfer_buffer[0] = i;
+ 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++) {
- g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j];
+ i2c_transfer_buffer[1 + j] = pwm_buffer[i + j];
}
#if SNLED27351_I2C_PERSISTENCE > 0
for (uint8_t i = 0; i < SNLED27351_I2C_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) {
return false;
}
}
#else
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 17, SNLED27351_I2C_TIMEOUT) != 0) {
return false;
}
#endif
@@ -133,8 +136,8 @@ 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
@@ -147,33 +150,35 @@ 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]);
}
+ snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL);
+
// Enable LEDs ON/OFF
- snled27351_write_register(addr, SNLED27351_REG_COMMAND, 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);
}
@@ -215,7 +220,7 @@ void snled27351_set_led_control_register(uint8_t index, bool value) {
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.
@@ -228,7 +233,8 @@ void snled27351_update_pwm_buffers(uint8_t addr, uint8_t index) {
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);
+ snled27351_select_page(addr, SNLED27351_COMMAND_LED_CONTROL);
+
for (int i = 0; i < SNLED27351_LED_CONTROL_REGISTER_COUNT; i++) {
snled27351_write_register(addr, i, g_led_control_registers[index][i]);
}
@@ -250,15 +256,15 @@ 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 13:54:20 +0000