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- //
- // calculate rgblight_effect_breathe_table[] values
- //
- // this is host program for quantum/rgblight.c:void rgblight_effect_breathing();
- //
- // example:
- // $ edit util/rgblight_breathing_table_calc.c
- // $ cc -o util/rgblight_breathing_table_calc util/rgblight_breathing_table_calc.c
- // $ ./util/rgblight_breathing_table_calc > keyboards/KEYBOARD_NAME/keymaps/KEYMAP_NAME/rgblight_breathe_table.h
- //
- #include <stdio.h>
- #include <math.h>
- #include <stdint.h>
-
- /// customize breeathing effect part ///////////////////////////
- #define RGBLIGHT_EFFECT_BREATHE_CENTER 1.85 // 1 to 2.7
- #define RGBLIGHT_EFFECT_BREATHE_MAX 255 // 0 to 255
- ////////////////////////////////////////////////////////////////
-
- int main(void) {
- int pos, step;
- int table[256];
- for (pos = 0; pos < 256; pos ++ ) {
- table[pos] = (uint8_t)(
- (exp(sin((pos/255.0)*M_PI))- RGBLIGHT_EFFECT_BREATHE_CENTER/M_E)
- * (RGBLIGHT_EFFECT_BREATHE_MAX/(M_E-1/M_E))
- );
- }
- printf("#ifndef RGBLIGHT_EFFECT_BREATHE_TABLE\n");
- printf("#define RGBLIGHT_EFFECT_BREATHE_TABLE\n\n");
- printf("const uint8_t rgblight_effect_breathe_table[] PROGMEM = {\n");
- printf(" /* #define RGBLIGHT_EFFECT_BREATHE_CENTER %.2f */\n", RGBLIGHT_EFFECT_BREATHE_CENTER);
- printf(" /* #define RGBLIGHT_EFFECT_BREATHE_MAX %d */\n", RGBLIGHT_EFFECT_BREATHE_MAX);
-
- for (int s = 0, step = (1<<s); s < 3 ; s += 1, step = (1<<s) ) {
- printf("\n #if RGBLIGHT_BREATHE_TABLE_SIZE == %d\n",
- s == 0 ? 256:(s== 1 ? 128: 64));
- for (pos = 0; pos < 256; pos += step ) {
- printf(" 0x%x%s", table[pos], (pos+step)>=256?"":"," );
- if ((pos+step) % 8 == 0)
- printf("\n");
- }
- printf(" #endif /* %d bytes table */\n", s == 0 ? 256:(s== 1 ? 128: 64));
- }
- printf("};\n");
- printf("\nstatic const int table_scale = 256/sizeof(rgblight_effect_breathe_table);\n");
- printf("\n#endif /* RGBLIGHT_EFFECT_BREATHE_TABLE */\n");
- return 0;
- }
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