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Diffstat (limited to 'keyboards/jj40/breathing_custom.h')
| -rw-r--r-- | keyboards/jj40/breathing_custom.h | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/keyboards/jj40/breathing_custom.h b/keyboards/jj40/breathing_custom.h deleted file mode 100644 index 71416b1b4..000000000 --- a/keyboards/jj40/breathing_custom.h +++ /dev/null | |||
| @@ -1,140 +0,0 @@ | |||
| 1 | /** | ||
| 2 | * Breathing effect code for PS2AVRGB boards (ATMEGA32A) | ||
| 3 | * Works in conjunction with `backlight.c`. | ||
| 4 | * | ||
| 5 | * Code adapted from `quantum.c` to register with the existing TIMER1 overflow | ||
| 6 | * handler in `backlight.c` instead of setting up its own timer. | ||
| 7 | * Kenneth A. (github.com/krusli | krusli.me) | ||
| 8 | */ | ||
| 9 | |||
| 10 | #ifdef BACKLIGHT_ENABLE | ||
| 11 | #ifdef BACKLIGHT_BREATHING | ||
| 12 | |||
| 13 | #include "backlight_custom.h" | ||
| 14 | |||
| 15 | #ifndef BREATHING_PERIOD | ||
| 16 | #define BREATHING_PERIOD 6 | ||
| 17 | #endif | ||
| 18 | |||
| 19 | #define breathing_min() do {breathing_counter = 0;} while (0) | ||
| 20 | #define breathing_max() do {breathing_counter = breathing_period * 244 / 2;} while (0) | ||
| 21 | |||
| 22 | // TODO make this share code with quantum.c | ||
| 23 | |||
| 24 | #define BREATHING_NO_HALT 0 | ||
| 25 | #define BREATHING_HALT_OFF 1 | ||
| 26 | #define BREATHING_HALT_ON 2 | ||
| 27 | #define BREATHING_STEPS 128 | ||
| 28 | |||
| 29 | static uint8_t breathing_period = BREATHING_PERIOD; | ||
| 30 | static uint8_t breathing_halt = BREATHING_NO_HALT; | ||
| 31 | static uint16_t breathing_counter = 0; | ||
| 32 | |||
| 33 | static bool breathing = false; | ||
| 34 | |||
| 35 | bool is_breathing(void) { | ||
| 36 | return breathing; | ||
| 37 | } | ||
| 38 | |||
| 39 | // See http://jared.geek.nz/2013/feb/linear-led-pwm | ||
| 40 | static uint16_t cie_lightness(uint16_t v) { | ||
| 41 | if (v <= 5243) // if below 8% of max | ||
| 42 | return v / 9; // same as dividing by 900% | ||
| 43 | else { | ||
| 44 | uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare | ||
| 45 | // to get a useful result with integer division, we shift left in the expression above | ||
| 46 | // and revert what we've done again after squaring. | ||
| 47 | y = y * y * y >> 8; | ||
| 48 | if (y > 0xFFFFUL) // prevent overflow | ||
| 49 | return 0xFFFFU; | ||
| 50 | else | ||
| 51 | return (uint16_t) y; | ||
| 52 | } | ||
| 53 | } | ||
| 54 | |||
| 55 | void breathing_enable(void) { | ||
| 56 | breathing = true; | ||
| 57 | breathing_counter = 0; | ||
| 58 | breathing_halt = BREATHING_NO_HALT; | ||
| 59 | // interrupt already registered | ||
| 60 | } | ||
| 61 | |||
| 62 | void breathing_pulse(void) { | ||
| 63 | if (get_backlight_level() == 0) | ||
| 64 | breathing_min(); | ||
| 65 | else | ||
| 66 | breathing_max(); | ||
| 67 | breathing_halt = BREATHING_HALT_ON; | ||
| 68 | // breathing_interrupt_enable(); | ||
| 69 | breathing = true; | ||
| 70 | } | ||
| 71 | |||
| 72 | void breathing_disable(void) { | ||
| 73 | breathing = false; | ||
| 74 | // backlight_set(get_backlight_level()); | ||
| 75 | b_led_set(get_backlight_level()); // custom implementation of backlight_set() | ||
| 76 | } | ||
| 77 | |||
| 78 | void breathing_self_disable(void) | ||
| 79 | { | ||
| 80 | if (get_backlight_level() == 0) | ||
| 81 | breathing_halt = BREATHING_HALT_OFF; | ||
| 82 | else | ||
| 83 | breathing_halt = BREATHING_HALT_ON; | ||
| 84 | } | ||
| 85 | |||
| 86 | void breathing_toggle(void) { | ||
| 87 | if (is_breathing()) | ||
| 88 | breathing_disable(); | ||
| 89 | else | ||
| 90 | breathing_enable(); | ||
| 91 | } | ||
| 92 | |||
| 93 | void breathing_period_set(uint8_t value) | ||
| 94 | { | ||
| 95 | if (!value) | ||
| 96 | value = 1; | ||
| 97 | breathing_period = value; | ||
| 98 | } | ||
| 99 | |||
| 100 | void breathing_period_default(void) { | ||
| 101 | breathing_period_set(BREATHING_PERIOD); | ||
| 102 | } | ||
| 103 | |||
| 104 | void breathing_period_inc(void) | ||
| 105 | { | ||
| 106 | breathing_period_set(breathing_period+1); | ||
| 107 | } | ||
| 108 | |||
| 109 | void breathing_period_dec(void) | ||
| 110 | { | ||
| 111 | breathing_period_set(breathing_period-1); | ||
| 112 | } | ||
| 113 | |||
| 114 | /* To generate breathing curve in python: | ||
| 115 | * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)] | ||
| 116 | */ | ||
| 117 | static const uint8_t breathing_table[BREATHING_STEPS] PROGMEM = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 28, 32, 36, 41, 46, 51, 57, 63, 70, 76, 83, 91, 98, 106, 113, 121, 129, 138, 146, 154, 162, 170, 178, 185, 193, 200, 207, 213, 220, 225, 231, 235, 240, 244, 247, 250, 252, 253, 254, 255, 254, 253, 252, 250, 247, 244, 240, 235, 231, 225, 220, 213, 207, 200, 193, 185, 178, 170, 162, 154, 146, 138, 129, 121, 113, 106, 98, 91, 83, 76, 70, 63, 57, 51, 46, 41, 36, 32, 28, 24, 20, 17, 15, 12, 10, 8, 6, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; | ||
| 118 | |||
| 119 | // Use this before the cie_lightness function. | ||
| 120 | static inline uint16_t scale_backlight(uint16_t v) { | ||
| 121 | return v / BACKLIGHT_LEVELS * get_backlight_level(); | ||
| 122 | } | ||
| 123 | |||
| 124 | void custom_breathing_handler(void) { | ||
| 125 | uint16_t interval = (uint16_t) breathing_period * 244 / BREATHING_STEPS; | ||
| 126 | // resetting after one period to prevent ugly reset at overflow. | ||
| 127 | breathing_counter = (breathing_counter + 1) % (breathing_period * 244); | ||
| 128 | uint8_t index = breathing_counter / interval % BREATHING_STEPS; | ||
| 129 | |||
| 130 | if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) || | ||
| 131 | ((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1))) | ||
| 132 | { | ||
| 133 | // breathing_interrupt_disable(); | ||
| 134 | } | ||
| 135 | |||
| 136 | setPWM(cie_lightness(scale_backlight((uint16_t) pgm_read_byte(&breathing_table[index]) * 0x0101U))); | ||
| 137 | } | ||
| 138 | |||
| 139 | #endif // BACKLIGHT_BREATHING | ||
| 140 | #endif // BACKLIGHT_ENABLE | ||
