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path: root/drivers/led/issi/is31fl3737.c
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Diffstat (limited to 'drivers/led/issi/is31fl3737.c')
-rw-r--r--drivers/led/issi/is31fl3737.c76
1 files changed, 29 insertions, 47 deletions
diff --git a/drivers/led/issi/is31fl3737.c b/drivers/led/issi/is31fl3737.c
index a458431952..318695d298 100644
--- a/drivers/led/issi/is31fl3737.c
+++ b/drivers/led/issi/is31fl3737.c
@@ -18,7 +18,6 @@
*/
#include "is31fl3737.h"
-#include <string.h>
#include "i2c_master.h"
#include "wait.h"
@@ -41,7 +40,7 @@
# define IS31FL3737_SW_PULLUP IS31FL3737_PUR_0_OHM
#endif
-#ifndef IS31FL3737_CS_PULLDONW
+#ifndef IS31FL3737_CS_PULLDOWN
# define IS31FL3737_CS_PULLDOWN IS31FL3737_PDR_0_OHM
#endif
@@ -49,11 +48,8 @@
# define IS31FL3737_GLOBAL_CURRENT 0xFF
#endif
-// Transfer buffer for TWITransmitData()
-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
@@ -66,38 +62,32 @@ uint8_t g_led_control_registers[IS31FL3737_DRIVER_COUNT][IS31FL3737_LED_CONTROL_
bool g_led_control_registers_update_required[IS31FL3737_DRIVER_COUNT] = {false};
void is31fl3737_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
- g_twi_transfer_buffer[0] = reg;
- g_twi_transfer_buffer[1] = data;
-
#if IS31FL3737_I2C_PERSISTENCE > 0
for (uint8_t i = 0; i < IS31FL3737_I2C_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3737_I2C_TIMEOUT) == 0) break;
+ if (i2c_writeReg(addr << 1, reg, &data, 1, IS31FL3737_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
}
#else
- i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, IS31FL3737_I2C_TIMEOUT);
+ i2c_writeReg(addr << 1, reg, &data, 1, IS31FL3737_I2C_TIMEOUT);
#endif
}
-void is31fl3737_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
- // assumes PG1 is already selected
-
- // transmit PWM registers in 12 transfers of 16 bytes
- // g_twi_transfer_buffer[] is 20 bytes
+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);
+}
- // iterate over the pwm_buffer contents at 16 byte intervals
- for (int i = 0; i < IS31FL3737_PWM_REGISTER_COUNT; i += 16) {
- g_twi_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);
+void is31fl3737_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
+ // Assumes page 1 is already selected.
+ // Transmit PWM registers in 12 transfers of 16 bytes.
+ // Iterate over the pwm_buffer contents at 16 byte intervals.
+ for (uint8_t i = 0; i < IS31FL3737_PWM_REGISTER_COUNT; i += 16) {
#if IS31FL3737_I2C_PERSISTENCE > 0
- for (uint8_t i = 0; i < IS31FL3737_I2C_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3737_I2C_TIMEOUT) == 0) break;
+ for (uint8_t j = 0; j < IS31FL3737_I2C_PERSISTENCE; j++) {
+ if (i2c_writeReg(addr << 1, i, pwm_buffer + i, 16, IS31FL3737_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
}
#else
- i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, IS31FL3737_I2C_TIMEOUT);
+ i2c_writeReg(addr << 1, i, pwm_buffer + i, 16, IS31FL3737_I2C_TIMEOUT);
#endif
}
}
@@ -138,32 +128,23 @@ 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++) {
+ for (uint8_t 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++) {
+ for (uint8_t 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)
@@ -179,12 +160,14 @@ void is31fl3737_init(uint8_t addr) {
void is31fl3737_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
is31fl3737_led_t led;
+
if (index >= 0 && index < IS31FL3737_LED_COUNT) {
memcpy_P(&led, (&g_is31fl3737_leds[index]), sizeof(led));
if (g_pwm_buffer[led.driver][led.r] == red && g_pwm_buffer[led.driver][led.g] == green && g_pwm_buffer[led.driver][led.b] == blue) {
return;
}
+
g_pwm_buffer[led.driver][led.r] = red;
g_pwm_buffer[led.driver][led.g] = green;
g_pwm_buffer[led.driver][led.b] = blue;
@@ -230,23 +213,22 @@ 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;
}
}
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);
- for (int i = 0; i < IS31FL3737_LED_CONTROL_REGISTER_COUNT; i++) {
+ is31fl3737_select_page(addr, IS31FL3737_COMMAND_LED_CONTROL);
+
+ for (uint8_t i = 0; i < IS31FL3737_LED_CONTROL_REGISTER_COUNT; i++) {
is31fl3737_write_register(addr, i, g_led_control_registers[index][i]);
}
+
g_led_control_registers_update_required[index] = false;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-02 20:41:39 +0000