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#include "quantum.h"
#include "backlight.h"
#include "backlight_driver_common.h"
#if !defined(BACKLIGHT_PIN) && !defined(BACKLIGHT_PINS)
# error "Backlight pin/pins not defined. Please configure."
#endif
#if defined(BACKLIGHT_PINS)
static const pin_t backlight_pins[] = BACKLIGHT_PINS;
# ifndef BACKLIGHT_LED_COUNT
# define BACKLIGHT_LED_COUNT (sizeof(backlight_pins) / sizeof(pin_t))
# endif
# define FOR_EACH_LED(x) \
for (uint8_t i = 0; i < BACKLIGHT_LED_COUNT; i++) { \
pin_t backlight_pin = backlight_pins[i]; \
{ x } \
}
#else
// we support only one backlight pin
static const pin_t backlight_pin = BACKLIGHT_PIN;
# define FOR_EACH_LED(x) x
#endif
static inline void backlight_on(pin_t backlight_pin) {
#if BACKLIGHT_ON_STATE == 0
writePinLow(backlight_pin);
#else
writePinHigh(backlight_pin);
#endif
}
static inline void backlight_off(pin_t backlight_pin) {
#if BACKLIGHT_ON_STATE == 0
writePinHigh(backlight_pin);
#else
writePinLow(backlight_pin);
#endif
}
void backlight_pins_init(void) {
// Setup backlight pin as output and output to off state.
FOR_EACH_LED(setPinOutput(backlight_pin); backlight_off(backlight_pin);)
}
void backlight_pins_on(void) { FOR_EACH_LED(backlight_on(backlight_pin);) }
void backlight_pins_off(void) { FOR_EACH_LED(backlight_off(backlight_pin);) }
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