Configurable Rainbow Swirl range (qmk#4376)

* Configurable Rainbow Swirl range This allows tweaking of the rainbow effect to get different effects on keyboards with varied LED layouts. We found the value 1950 works on the RGBKB.net Sol to get a cool striped effect across the keyboard. * Document RGBLIGHT_RAINBOW_SWIRL_RANGE * Better wording for the documentation
zer09 · Nov 10, 2018 · 218a13f · 218a13f
1 parent 2fc7c26
commit 218a13f
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/docs/feature_rgblight.md b/docs/feature_rgblight.md
@@ -122,6 +122,7 @@ The following options can be used to tweak the various animations:
 |`RGBLIGHT_EFFECT_KNIGHT_LED_NUM`    |`RGBLED_NUM` |The number of LEDs to have the "Knight" animation travel                             |
 |`RGBLIGHT_EFFECT_CHRISTMAS_INTERVAL`|`1000`       |How long to wait between light changes for the "Christmas" animation, in milliseconds|
 |`RGBLIGHT_EFFECT_CHRISTMAS_STEP`    |`2`          |The number of LEDs to group the red/green colors by for the "Christmas" animation    |
+|`RGBLIGHT_RAINBOW_SWIRL_RANGE`      |`360`        |Range adjustment for the rainbow swirl effect to get different swirls                |
 
 You can also modify the speeds that the different modes animate at:
 

diff --git a/quantum/rgblight.c b/quantum/rgblight.c
@@ -679,6 +679,10 @@ void rgblight_effect_rainbow_mood(uint8_t interval) {
 #endif
 
 #ifdef RGBLIGHT_EFFECT_RAINBOW_SWIRL
+#ifndef RGBLIGHT_RAINBOW_SWIRL_RANGE
+  #define RGBLIGHT_RAINBOW_SWIRL_RANGE 360
+#endif
+
 __attribute__ ((weak))
 const uint8_t RGBLED_RAINBOW_SWIRL_INTERVALS[] PROGMEM = {100, 50, 20};
 
@@ -692,7 +696,7 @@ void rgblight_effect_rainbow_swirl(uint8_t interval) {
   }
   last_timer = timer_read();
   for (i = 0; i < RGBLED_NUM; i++) {
-    hue = (360 / RGBLED_NUM * i + current_hue) % 360;
+    hue = (RGBLIGHT_RAINBOW_SWIRL_RANGE / RGBLED_NUM * i + current_hue) % 360;
     sethsv(hue, rgblight_config.sat, rgblight_config.val, (LED_TYPE *)&led[i]);
   }
   rgblight_set();