mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-11-27 05:36:52 +00:00
4531cc874e
* Initial migration of software PWM backlight * First pass at backlight driver docs * Correct driver name in docs * Run backlight_task when using BACKLIGHT_PINS * Resolve backlight docs TODOs
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
#include "quantum.h"
|
|
#include "backlight.h"
|
|
|
|
#if !defined(BACKLIGHT_PIN) && !defined(BACKLIGHT_PINS)
|
|
# error "Backlight pin/pins not defined. Please configure."
|
|
#endif
|
|
|
|
#ifdef BACKLIGHT_BREATHING
|
|
# error "Backlight breathing is not available for software PWM. Please disable."
|
|
#endif
|
|
|
|
#ifndef BACKLIGHT_ON_STATE
|
|
# define BACKLIGHT_ON_STATE 0
|
|
#endif
|
|
|
|
#ifdef BACKLIGHT_PINS
|
|
# define BACKLIGHT_PIN_INIT BACKLIGHT_PINS
|
|
#else
|
|
# define BACKLIGHT_PIN_INIT \
|
|
{ BACKLIGHT_PIN }
|
|
#endif
|
|
|
|
static const pin_t backlight_pins[] = BACKLIGHT_PIN_INIT;
|
|
#define BACKLIGHT_LED_COUNT (sizeof(backlight_pins) / sizeof(pin_t))
|
|
|
|
#define FOR_EACH_LED(x) \
|
|
for (uint8_t i = 0; i < BACKLIGHT_LED_COUNT; i++) { \
|
|
pin_t backlight_pin = backlight_pins[i]; \
|
|
{ x } \
|
|
}
|
|
|
|
void backlight_on(pin_t backlight_pin) {
|
|
#if BACKLIGHT_ON_STATE == 0
|
|
writePinLow(backlight_pin);
|
|
#else
|
|
writePinHigh(backlight_pin);
|
|
#endif
|
|
}
|
|
|
|
void backlight_off(pin_t backlight_pin) {
|
|
#if BACKLIGHT_ON_STATE == 0
|
|
writePinHigh(backlight_pin);
|
|
#else
|
|
writePinLow(backlight_pin);
|
|
#endif
|
|
}
|
|
|
|
void backlight_init_ports(void) {
|
|
// Setup backlight pin as output and output to on state.
|
|
FOR_EACH_LED(setPinOutput(backlight_pin); backlight_on(backlight_pin);)
|
|
}
|
|
|
|
void backlight_task(void) {
|
|
static uint8_t backlight_tick = 0;
|
|
|
|
if ((0xFFFF >> (get_backlight_level() * ((BACKLIGHT_LEVELS + 1) / 2))) & (1 << backlight_tick)) {
|
|
FOR_EACH_LED(backlight_on(backlight_pin);)
|
|
} else {
|
|
FOR_EACH_LED(backlight_off(backlight_pin);)
|
|
}
|
|
backlight_tick = (backlight_tick + 1) % 16;
|
|
}
|
|
|
|
void backlight_set(uint8_t level) {
|
|
// noop as backlight_task uses get_backlight_level()
|
|
}
|