bendns' repos / ArduinoStuff
arduino stuffs
Diffstat (limited to 'rgled/rgled.ino')
-rw-r--r--rgled/rgled.ino74
1 files changed, 74 insertions, 0 deletions
diff --git a/rgled/rgled.ino b/rgled/rgled.ino
new file mode 100644
index 0000000..555414a
--- /dev/null
+++ b/rgled/rgled.ino
@@ -0,0 +1,74 @@
+#include "rot.h"
+const uint8_t RED = 5;
+const uint8_t BLUE = 6;
+const uint8_t GREEN = 9;
+
+void setup() { Rotary::setup(50); }
+
+const uint8_t min_delay = 1;
+void loop() {
+ static uint8_t R, G, B;
+ static uint8_t color = 0;
+ hue_to_rgb(color, 255, R, G, B);
+ analogWrite(RED, R);
+ analogWrite(GREEN, G);
+ analogWrite(BLUE, B);
+ color++;
+ // color %= 256; it wraps on its own!
+ int result = Rotary::read();
+ if (!Rotary::button_just_pressed()) {
+ if (result > min_delay) {
+ delay(result);
+ return;
+ }
+ } else {
+ delay(50);
+ Rotary::set(50);
+ return;
+ }
+ if (result != min_delay)
+ Rotary::set(min_delay);
+ delay(min_delay);
+}
+
+void hue_to_rgb(uint8_t hue, uint8_t brightness, uint8_t &R, uint8_t &B, uint8_t &G) {
+ uint16_t scaled = hue * 6;
+ uint8_t segment = scaled / 256;
+ uint8_t offset = scaled - segment * 256;
+ uint8_t complement = 0;
+ uint8_t prev = (brightness * (255 - offset)) / 256;
+ uint8_t next = (brightness * offset) / 256;
+ switch (segment) {
+ case 0:
+ R = brightness;
+ G = next;
+ B = complement;
+ break;
+ case 1:
+ R = prev;
+ G = brightness;
+ B = complement;
+ break;
+ case 2:
+ R = complement;
+ G = brightness;
+ B = next;
+ break;
+ case 3:
+ R = complement;
+ G = prev;
+ B = brightness;
+ break;
+ case 4:
+ R = next;
+ G = complement;
+ B = brightness;
+ break;
+ case 5:
+ default:
+ R = brightness;
+ G = complement;
+ B = prev;
+ break;
+ }
+} \ No newline at end of file