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If RGBLIGHT_EFFECT_BREATHE_CENTER is undefined, use fixed breathe table instead of exp() and sin() (#5484)

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* If RGBLIGHT_EFFECT_BREATHE_CENTER is undefined, use fixed breathe table instead of exp() and sin()

* Change rgblight breathing table size to be easily selectable.

add RGBLIGHT_BREATHE_TABLE_SIZE macro for customize breathing effect.
This commit is contained in:
Takeshi ISHII 2019-05-02 23:59:29 +09:00 • committed by MechMerlin
parent 4db31fb374
commit 3da8d46a07
6 changed files with 185 additions and 4 deletions
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49
util/rgblight_breathing_table_calc.c Normal file
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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;
}