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Diffstat (limited to 'keyboards/jj4x4/breathing_custom.h')
| -rw-r--r-- | keyboards/jj4x4/breathing_custom.h | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/keyboards/jj4x4/breathing_custom.h b/keyboards/jj4x4/breathing_custom.h deleted file mode 100644 index 71416b1b45..0000000000 --- a/keyboards/jj4x4/breathing_custom.h +++ /dev/null @@ -1,140 +0,0 @@ -/** - * Breathing effect code for PS2AVRGB boards (ATMEGA32A) - * Works in conjunction with `backlight.c`. - * - * Code adapted from `quantum.c` to register with the existing TIMER1 overflow - * handler in `backlight.c` instead of setting up its own timer. - * Kenneth A. (github.com/krusli | krusli.me) - */ - -#ifdef BACKLIGHT_ENABLE -#ifdef BACKLIGHT_BREATHING - -#include "backlight_custom.h" - -#ifndef BREATHING_PERIOD -#define BREATHING_PERIOD 6 -#endif - -#define breathing_min() do {breathing_counter = 0;} while (0) -#define breathing_max() do {breathing_counter = breathing_period * 244 / 2;} while (0) - -// TODO make this share code with quantum.c - -#define BREATHING_NO_HALT 0 -#define BREATHING_HALT_OFF 1 -#define BREATHING_HALT_ON 2 -#define BREATHING_STEPS 128 - -static uint8_t breathing_period = BREATHING_PERIOD; -static uint8_t breathing_halt = BREATHING_NO_HALT; -static uint16_t breathing_counter = 0; - -static bool breathing = false; - -bool is_breathing(void) { - return breathing; -} - -// See http://jared.geek.nz/2013/feb/linear-led-pwm -static uint16_t cie_lightness(uint16_t v) { - if (v <= 5243) // if below 8% of max - return v / 9; // same as dividing by 900% - else { - uint32_t y = (((uint32_t) v + 10486) << 8) / (10486 + 0xFFFFUL); // add 16% of max and compare - // to get a useful result with integer division, we shift left in the expression above - // and revert what we've done again after squaring. - y = y * y * y >> 8; - if (y > 0xFFFFUL) // prevent overflow - return 0xFFFFU; - else - return (uint16_t) y; - } -} - -void breathing_enable(void) { - breathing = true; - breathing_counter = 0; - breathing_halt = BREATHING_NO_HALT; - // interrupt already registered -} - -void breathing_pulse(void) { - if (get_backlight_level() == 0) - breathing_min(); - else - breathing_max(); - breathing_halt = BREATHING_HALT_ON; - // breathing_interrupt_enable(); - breathing = true; -} - -void breathing_disable(void) { - breathing = false; - // backlight_set(get_backlight_level()); - b_led_set(get_backlight_level()); // custom implementation of backlight_set() -} - -void breathing_self_disable(void) -{ - if (get_backlight_level() == 0) - breathing_halt = BREATHING_HALT_OFF; - else - breathing_halt = BREATHING_HALT_ON; -} - -void breathing_toggle(void) { - if (is_breathing()) - breathing_disable(); - else - breathing_enable(); -} - -void breathing_period_set(uint8_t value) -{ - if (!value) - value = 1; - breathing_period = value; -} - -void breathing_period_default(void) { - breathing_period_set(BREATHING_PERIOD); -} - -void breathing_period_inc(void) -{ - breathing_period_set(breathing_period+1); -} - -void breathing_period_dec(void) -{ - breathing_period_set(breathing_period-1); -} - -/* To generate breathing curve in python: - * from math import sin, pi; [int(sin(x/128.0*pi)**4*255) for x in range(128)] - */ -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}; - -// Use this before the cie_lightness function. -static inline uint16_t scale_backlight(uint16_t v) { - return v / BACKLIGHT_LEVELS * get_backlight_level(); -} - -void custom_breathing_handler(void) { - uint16_t interval = (uint16_t) breathing_period * 244 / BREATHING_STEPS; - // resetting after one period to prevent ugly reset at overflow. - breathing_counter = (breathing_counter + 1) % (breathing_period * 244); - uint8_t index = breathing_counter / interval % BREATHING_STEPS; - - if (((breathing_halt == BREATHING_HALT_ON) && (index == BREATHING_STEPS / 2)) || - ((breathing_halt == BREATHING_HALT_OFF) && (index == BREATHING_STEPS - 1))) - { - // breathing_interrupt_disable(); - } - - setPWM(cie_lightness(scale_backlight((uint16_t) pgm_read_byte(&breathing_table[index]) * 0x0101U))); -} - -#endif // BACKLIGHT_BREATHING -#endif // BACKLIGHT_ENABLE |