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LED drivers: refactor page selection (#22518)

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Ryan 2023-12-04 17:52:40 +11:00 • committed by GitHub
parent 3a2aec47b7
commit 358bc8eac8
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GPG key ID: 4AEE18F83AFDEB23
29 changed files with 211 additions and 274 deletions
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33
drivers/led/issi/is31fl3737.c
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@ -53,7 +53,7 @@
uint8_t g_twi_transfer_buffer[20];
// These buffers match the IS31FL3737 PWM registers.
// The control buffers match the PG0 LED On/Off registers.
// The control buffers match the page 0 LED On/Off registers.
// Storing them like this is optimal for I2C transfers to the registers.
// We could optimize this and take out the unused registers from these
// buffers and the transfers in is31fl3737_write_pwm_buffer() but it's
@ -78,8 +78,13 @@ void is31fl3737_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
#endif
}
void is31fl3737_select_page(uint8_t addr, uint8_t page) {
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND_WRITE_LOCK, IS31FL3737_COMMAND_WRITE_LOCK_MAGIC);
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND, page);
}
void is31fl3737_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
// assumes PG1 is already selected
// assumes page 1 is already selected
// transmit PWM registers in 12 transfers of 16 bytes
// g_twi_transfer_buffer[] is 20 bytes
@ -138,32 +143,23 @@ void is31fl3737_init(uint8_t addr) {
// Set up the mode and other settings, clear the PWM registers,
// then disable software shutdown.
// Unlock the command register.
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND_WRITE_LOCK, IS31FL3737_COMMAND_WRITE_LOCK_MAGIC);
is31fl3737_select_page(addr, IS31FL3737_COMMAND_LED_CONTROL);
// Select PG0
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND, IS31FL3737_COMMAND_LED_CONTROL);
// Turn off all LEDs.
for (int i = 0; i < IS31FL3737_LED_CONTROL_REGISTER_COUNT; i++) {
is31fl3737_write_register(addr, i, 0x00);
}
// Unlock the command register.
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND_WRITE_LOCK, IS31FL3737_COMMAND_WRITE_LOCK_MAGIC);
is31fl3737_select_page(addr, IS31FL3737_COMMAND_PWM);
// Select PG1
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND, IS31FL3737_COMMAND_PWM);
// Set PWM on all LEDs to 0
// No need to setup Breath registers to PWM as that is the default.
for (int i = 0; i < IS31FL3737_PWM_REGISTER_COUNT; i++) {
is31fl3737_write_register(addr, i, 0x00);
}
// Unlock the command register.
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND_WRITE_LOCK, IS31FL3737_COMMAND_WRITE_LOCK_MAGIC);
is31fl3737_select_page(addr, IS31FL3737_COMMAND_FUNCTION);
// Select PG3
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND, IS31FL3737_COMMAND_FUNCTION);
// Set de-ghost pull-up resistors (SWx)
is31fl3737_write_register(addr, IS31FL3737_FUNCTION_REG_SW_PULLUP, IS31FL3737_SW_PULLUP);
// Set de-ghost pull-down resistors (CSx)
@ -230,9 +226,7 @@ void is31fl3737_set_led_control_register(uint8_t index, bool red, bool green, bo
void is31fl3737_update_pwm_buffers(uint8_t addr, uint8_t index) {
if (g_pwm_buffer_update_required[index]) {
// Firstly we need to unlock the command register and select PG1
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND_WRITE_LOCK, IS31FL3737_COMMAND_WRITE_LOCK_MAGIC);
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND, IS31FL3737_COMMAND_PWM);
is31fl3737_select_page(addr, IS31FL3737_COMMAND_PWM);
is31fl3737_write_pwm_buffer(addr, g_pwm_buffer[index]);
g_pwm_buffer_update_required[index] = false;
@ -241,9 +235,8 @@ void is31fl3737_update_pwm_buffers(uint8_t addr, uint8_t index) {
void is31fl3737_update_led_control_registers(uint8_t addr, uint8_t index) {
if (g_led_control_registers_update_required[index]) {
// Firstly we need to unlock the command register and select PG0
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND_WRITE_LOCK, IS31FL3737_COMMAND_WRITE_LOCK_MAGIC);
is31fl3737_write_register(addr, IS31FL3737_REG_COMMAND, IS31FL3737_COMMAND_LED_CONTROL);
is31fl3737_select_page(addr, IS31FL3737_COMMAND_LED_CONTROL);
for (int i = 0; i < IS31FL3737_LED_CONTROL_REGISTER_COUNT; i++) {
is31fl3737_write_register(addr, i, g_led_control_registers[index][i]);
}