qmk_firmware

QMK firmware for my keyboards (Corne, Sweep Ferris) and trackball (Ploopy Adept)
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backlight_driver_common.c (1628B)

      1 #include "backlight.h"
      2 #include "backlight_driver_common.h"
      3 #include "gpio.h"
      4 #include "util.h"
      5 
      6 #if !defined(BACKLIGHT_PIN) && !defined(BACKLIGHT_PINS)
      7 #    error "Backlight pin/pins not defined. Please configure."
      8 #endif
      9 
     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
     15 
     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             {                                               \
     20                 x                                           \
     21             }                                               \
     22         }
     23 #else
     24 // we support only one backlight pin
     25 static const pin_t backlight_pin = BACKLIGHT_PIN;
     26 #    define FOR_EACH_LED(x) x
     27 #endif
     28 
     29 static inline void backlight_on(pin_t backlight_pin) {
     30 #if BACKLIGHT_ON_STATE == 0
     31     gpio_write_pin_low(backlight_pin);
     32 #else
     33     gpio_write_pin_high(backlight_pin);
     34 #endif
     35 }
     36 
     37 static inline void backlight_off(pin_t backlight_pin) {
     38 #if BACKLIGHT_ON_STATE == 0
     39     gpio_write_pin_high(backlight_pin);
     40 #else
     41     gpio_write_pin_low(backlight_pin);
     42 #endif
     43 }
     44 
     45 void backlight_pins_init(void) {
     46     // Setup backlight pin as output and output to off state.
     47     FOR_EACH_LED(gpio_set_pin_output(backlight_pin); backlight_off(backlight_pin);)
     48 }
     49 
     50 void backlight_pins_on(void) {
     51     FOR_EACH_LED(backlight_on(backlight_pin);)
     52 }
     53 
     54 void backlight_pins_off(void) {
     55     FOR_EACH_LED(backlight_off(backlight_pin);)
     56 }