HCoop / jackhill / qmk / firmware.git / blame
| Commit | Line | Data |
|---|---|---|
| 4531cc87 JC |
1 | #include "quantum.h" |
| 2 | #include "backlight.h" | |
| 3 | ||
| 4 | #if !defined(BACKLIGHT_PIN) && !defined(BACKLIGHT_PINS) | |
| 5 | # error "Backlight pin/pins not defined. Please configure." | |
| 6 | #endif | |
| 7 | ||
| 8 | #ifdef BACKLIGHT_BREATHING | |
| 9 | # error "Backlight breathing is not available for software PWM. Please disable." | |
| 10 | #endif | |
| 11 | ||
| 12 | #ifndef BACKLIGHT_ON_STATE | |
| 13 | # define BACKLIGHT_ON_STATE 0 | |
| 14 | #endif | |
| 15 | ||
| 16 | #ifdef BACKLIGHT_PINS | |
| 17 | # define BACKLIGHT_PIN_INIT BACKLIGHT_PINS | |
| 18 | #else | |
| 19 | # define BACKLIGHT_PIN_INIT \ | |
| 20 | { BACKLIGHT_PIN } | |
| 21 | #endif | |
| 22 | ||
| 23 | static const pin_t backlight_pins[] = BACKLIGHT_PIN_INIT; | |
| 24 | #define BACKLIGHT_LED_COUNT (sizeof(backlight_pins) / sizeof(pin_t)) | |
| 25 | ||
| 26 | #define FOR_EACH_LED(x) \ | |
| 27 | for (uint8_t i = 0; i < BACKLIGHT_LED_COUNT; i++) { \ | |
| 28 | pin_t backlight_pin = backlight_pins[i]; \ | |
| 29 | { x } \ | |
| 30 | } | |
| 31 | ||
| 32 | void backlight_on(pin_t backlight_pin) { | |
| 33 | #if BACKLIGHT_ON_STATE == 0 | |
| 34 | writePinLow(backlight_pin); | |
| 35 | #else | |
| 36 | writePinHigh(backlight_pin); | |
| 37 | #endif | |
| 38 | } | |
| 39 | ||
| 40 | void backlight_off(pin_t backlight_pin) { | |
| 41 | #if BACKLIGHT_ON_STATE == 0 | |
| 42 | writePinHigh(backlight_pin); | |
| 43 | #else | |
| 44 | writePinLow(backlight_pin); | |
| 45 | #endif | |
| 46 | } | |
| 47 | ||
| 48 | void backlight_init_ports(void) { | |
| 49 | // Setup backlight pin as output and output to on state. | |
| 50 | FOR_EACH_LED(setPinOutput(backlight_pin); backlight_on(backlight_pin);) | |
| 51 | } | |
| 52 | ||
| 53 | void backlight_task(void) { | |
| 54 | static uint8_t backlight_tick = 0; | |
| 55 | ||
| 56 | if ((0xFFFF >> (get_backlight_level() * ((BACKLIGHT_LEVELS + 1) / 2))) & (1 << backlight_tick)) { | |
| 57 | FOR_EACH_LED(backlight_on(backlight_pin);) | |
| 58 | } else { | |
| 59 | FOR_EACH_LED(backlight_off(backlight_pin);) | |
| 60 | } | |
| 61 | backlight_tick = (backlight_tick + 1) % 16; | |
| 62 | } | |
| 63 | ||
| 64 | void backlight_set(uint8_t level) { | |
| 65 | // noop as backlight_task uses get_backlight_level() | |
| 66 | } |