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