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path: root/drivers/led/issi/is31fl3733-simple.c
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Diffstat (limited to 'drivers/led/issi/is31fl3733-simple.c')
-rw-r--r--drivers/led/issi/is31fl3733-simple.c58
1 files changed, 25 insertions, 33 deletions
diff --git a/drivers/led/issi/is31fl3733-simple.c b/drivers/led/issi/is31fl3733-simple.c
index 9f2444c253..889d9ef389 100644
--- a/drivers/led/issi/is31fl3733-simple.c
+++ b/drivers/led/issi/is31fl3733-simple.c
@@ -43,7 +43,7 @@
#endif
#ifndef IS31FL3733_CS_PULLDOWN
-# define IS31FL3733_CSPULLDOWN IS31FL3733_PDR_0_OHM
+# define IS31FL3733_CS_PULLDOWN IS31FL3733_PDR_0_OHM
#endif
#ifndef IS31FL3733_GLOBAL_CURRENT
@@ -63,11 +63,10 @@
# define IS31FL3733_SYNC_4 IS31FL3733_SYNC_NONE
#endif
-// Transfer buffer for TWITransmitData()
-uint8_t g_twi_transfer_buffer[20];
+uint8_t i2c_transfer_buffer[20];
// These buffers match the IS31FL3733 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 is31fl3733_write_pwm_buffer() but it's
@@ -80,45 +79,50 @@ bool g_led_control_registers_update_required[IS31FL3733_DRIVER_COUNT]
bool is31fl3733_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 IS31FL3733_I2C_PERSISTENCE > 0
for (uint8_t i = 0; i < IS31FL3733_I2C_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3733_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, IS31FL3733_I2C_TIMEOUT) != 0) {
return false;
}
}
#else
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3733_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, IS31FL3733_I2C_TIMEOUT) != 0) {
return false;
}
#endif
return true;
}
+void is31fl3733_select_page(uint8_t addr, uint8_t page) {
+ is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND_WRITE_LOCK, IS31FL3733_COMMAND_WRITE_LOCK_MAGIC);
+ is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND, page);
+}
+
bool is31fl3733_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
- // Assumes PG1 is already selected.
+ // Assumes page 1 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 < IS31FL3733_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.
- memcpy(g_twi_transfer_buffer + 1, pwm_buffer + i, 16);
+ memcpy(i2c_transfer_buffer + 1, pwm_buffer + i, 16);
#if IS31FL3733_I2C_PERSISTENCE > 0
for (uint8_t i = 0; i < IS31FL3733_I2C_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3733_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 17, IS31FL3733_I2C_TIMEOUT) != 0) {
return false;
}
}
#else
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3733_I2C_TIMEOUT) != 0) {
+ if (i2c_transmit(addr << 1, i2c_transfer_buffer, 17, IS31FL3733_I2C_TIMEOUT) != 0) {
return false;
}
#endif
@@ -163,32 +167,23 @@ void is31fl3733_init(uint8_t addr, uint8_t sync) {
// then disable software shutdown.
// Sync is passed so set it according to the datasheet.
- // Unlock the command register.
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND_WRITE_LOCK, IS31FL3733_COMMAND_WRITE_LOCK_MAGIC);
+ is31fl3733_select_page(addr, IS31FL3733_COMMAND_LED_CONTROL);
- // Select PG0
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND, IS31FL3733_COMMAND_LED_CONTROL);
// Turn off all LEDs.
for (int i = 0; i < IS31FL3733_LED_CONTROL_REGISTER_COUNT; i++) {
is31fl3733_write_register(addr, i, 0x00);
}
- // Unlock the command register.
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND_WRITE_LOCK, IS31FL3733_COMMAND_WRITE_LOCK_MAGIC);
+ is31fl3733_select_page(addr, IS31FL3733_COMMAND_PWM);
- // Select PG1
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND, IS31FL3733_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 < IS31FL3733_PWM_REGISTER_COUNT; i++) {
is31fl3733_write_register(addr, i, 0x00);
}
- // Unlock the command register.
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND_WRITE_LOCK, IS31FL3733_COMMAND_WRITE_LOCK_MAGIC);
+ is31fl3733_select_page(addr, IS31FL3733_COMMAND_FUNCTION);
- // Select PG3
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND, IS31FL3733_COMMAND_FUNCTION);
// Set de-ghost pull-up resistors (SWx)
is31fl3733_write_register(addr, IS31FL3733_FUNCTION_REG_SW_PULLUP, IS31FL3733_SW_PULLUP);
// Set de-ghost pull-down resistors (CSx)
@@ -239,11 +234,9 @@ void is31fl3733_set_led_control_register(uint8_t index, bool value) {
void is31fl3733_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.
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND_WRITE_LOCK, IS31FL3733_COMMAND_WRITE_LOCK_MAGIC);
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND, IS31FL3733_COMMAND_PWM);
+ is31fl3733_select_page(addr, IS31FL3733_COMMAND_PWM);
- // If any of the transactions fail we risk writing dirty PG0,
+ // If any of the transactions fail we risk writing dirty page 0,
// refresh page 0 just in case.
if (!is31fl3733_write_pwm_buffer(addr, g_pwm_buffer[index])) {
g_led_control_registers_update_required[index] = true;
@@ -254,9 +247,8 @@ void is31fl3733_update_pwm_buffers(uint8_t addr, uint8_t index) {
void is31fl3733_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
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND_WRITE_LOCK, IS31FL3733_COMMAND_WRITE_LOCK_MAGIC);
- is31fl3733_write_register(addr, IS31FL3733_REG_COMMAND, IS31FL3733_COMMAND_LED_CONTROL);
+ is31fl3733_select_page(addr, IS31FL3733_COMMAND_LED_CONTROL);
+
for (int i = 0; i < IS31FL3733_LED_CONTROL_REGISTER_COUNT; i++) {
is31fl3733_write_register(addr, i, g_led_control_registers[index][i]);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 06:44:14 +0000