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qmk_firmware

custom branch of QMK firmware git clone https://anongit.hacktivis.me/git/qmk_firmware.git

backlight_driver_common.c (1504B)

    

  1. #include "backlight.h"
  2. #include "backlight_driver_common.h"
  3. #include "gpio.h"
  4. #include "util.h"
  6. #if !defined(BACKLIGHT_PIN) && !defined(BACKLIGHT_PINS)
  7. #    error "Backlight pin/pins not defined. Please configure."
  8. #endif
  10. #if defined(BACKLIGHT_PINS)
  11. static const pin_t backlight_pins[] = BACKLIGHT_PINS;
  12. #    ifndef BACKLIGHT_LED_COUNT
  13. #        define BACKLIGHT_LED_COUNT ARRAY_SIZE(backlight_pins)
  14. #    endif
  16. #    define FOR_EACH_LED(x)                                 \
  17.         for (uint8_t i = 0; i < BACKLIGHT_LED_COUNT; i++) { \
  18.             pin_t backlight_pin = backlight_pins[i];        \
  19.             { x }                                           \
  20.         }
  21. #else
  22. // we support only one backlight pin
  23. static const pin_t backlight_pin = BACKLIGHT_PIN;
  24. #    define FOR_EACH_LED(x) x
  25. #endif
  27. static inline void backlight_on(pin_t backlight_pin) {
  28. #if BACKLIGHT_ON_STATE == 0
  29.     gpio_write_pin_low(backlight_pin);
  30. #else
  31.     gpio_write_pin_high(backlight_pin);
  32. #endif
  33. }
  35. static inline void backlight_off(pin_t backlight_pin) {
  36. #if BACKLIGHT_ON_STATE == 0
  37.     gpio_write_pin_high(backlight_pin);
  38. #else
  39.     gpio_write_pin_low(backlight_pin);
  40. #endif
  41. }
  43. void backlight_pins_init(void) {
  44.     // Setup backlight pin as output and output to off state.
  45.     FOR_EACH_LED(gpio_set_pin_output(backlight_pin); backlight_off(backlight_pin);)
  46. }
  48. void backlight_pins_on(void) {
  49.     FOR_EACH_LED(backlight_on(backlight_pin);)
  50. }
  52. void backlight_pins_off(void) {
  53.     FOR_EACH_LED(backlight_off(backlight_pin);)
  54. }