diff options
Diffstat (limited to 'drivers/led/aw20216.c')
| -rw-r--r-- | drivers/led/aw20216.c | 19 | 
1 files changed, 19 insertions, 0 deletions
| diff --git a/drivers/led/aw20216.c b/drivers/led/aw20216.c index cbb0b60774..7895f1497b 100644 --- a/drivers/led/aw20216.c +++ b/drivers/led/aw20216.c @@ -1,4 +1,5 @@  /* Copyright 2021 Jasper Chan + *           2023 Huckies <https://github.com/Huckies>   *   * This program is free software: you can redistribute it and/or modify   * it under the terms of the GNU General Public License as published by @@ -15,6 +16,7 @@   */  #include "aw20216.h" +#include "wait.h"  #include "spi_master.h"  /* The AW20216 appears to be somewhat similar to the IS31FL743, although quite @@ -34,6 +36,8 @@  #define AW_REG_CONFIGURATION 0x00 // PG0  #define AW_REG_GLOBALCURRENT 0x01 // PG0 +#define AW_REG_RESET 0x2F         // PG0 +#define AW_REG_MIXFUNCTION 0x46   // PG0  // Default value of AW_REG_CONFIGURATION  // D7:D4 = 1011, SWSEL (SW1~SW12 active) @@ -41,7 +45,10 @@  // D2:D1 = 00, OSDE (open/short detection enable)  // D0 = 0, CHIPEN (write 1 to enable LEDs when hardware enable pulled high)  #define AW_CONFIG_DEFAULT 0b10110000 +#define AW_MIXCR_DEFAULT 0b00000000 +#define AW_RESET_CMD 0xAE  #define AW_CHIPEN 1 +#define AW_LPEN (0x01 << 1)  #define AW_PWM_REGISTER_COUNT 216 @@ -94,6 +101,10 @@ static inline bool AW20216_write_register(pin_t cs_pin, uint8_t page, uint8_t re      return AW20216_write(cs_pin, page, reg, &value, 1);  } +void AW20216_soft_reset(pin_t cs_pin) { +    AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_RESET, AW_RESET_CMD); +} +  static void AW20216_init_scaling(pin_t cs_pin) {      // Set constant current to the max, control brightness with PWM      for (uint8_t i = 0; i < AW_PWM_REGISTER_COUNT; i++) { @@ -111,15 +122,23 @@ static inline void AW20216_soft_enable(pin_t cs_pin) {      AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_CONFIGURATION, AW_CONFIG_DEFAULT | AW_CHIPEN);  } +static inline void AW20216_auto_lowpower(pin_t cs_pin) { +    AW20216_write_register(cs_pin, AW_PAGE_FUNCTION, AW_REG_MIXFUNCTION, AW_MIXCR_DEFAULT | AW_LPEN); +} +  void AW20216_init(pin_t cs_pin, pin_t en_pin) {      setPinOutput(en_pin);      writePinHigh(en_pin); +    AW20216_soft_reset(cs_pin); +    wait_ms(2); +      // Drivers should start with all scaling and PWM registers as off      AW20216_init_current_limit(cs_pin);      AW20216_init_scaling(cs_pin);      AW20216_soft_enable(cs_pin); +    AW20216_auto_lowpower(cs_pin);  }  void AW20216_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { | 
