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Diffstat (limited to 'util/rgblight_breathing_table_calc.c')
-rw-r--r--util/rgblight_breathing_table_calc.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/util/rgblight_breathing_table_calc.c b/util/rgblight_breathing_table_calc.c
new file mode 100644
index 0000000000..fc4d49ea58
--- /dev/null
+++ b/util/rgblight_breathing_table_calc.c
@@ -0,0 +1,49 @@
+//
+// 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;
+}