Added initial RGBLED program, basic button handling

Just another rainbow thing.

include/hsv2rgb.h

@@ -0,0 +1,98 @@
+#ifndef _INC_HSV2RGB_H
+#define _INC_HSV2RGB_H
+
+
+
+#include <stdint.h>
+
+
+typedef struct color_rgb {
+	uint8_t r;
+	uint8_t g;
+	uint8_t b;
+} color_rgb;
+
+typedef struct color_hsv {
+	int16_t h;
+	uint8_t s;
+	uint8_t v;
+} color_hsv;
+
+
+#define HSV_HUE_SEXTANT		256
+#define HSV_HUE_STEPS		(6 * HSV_HUE_SEXTANT)
+
+#define HSV_HUE_MIN			0
+#define HSV_HUE_MAX			(HSV_HUE_STEPS - 1)
+#define HSV_SAT_MIN			0
+#define HSV_SAT_MAX			255
+#define HSV_VAL_MIN			0
+#define HSV_VAL_MAX			255
+
+/* Options: */
+#define HSV_USE_SEXTANT_TEST	/* Limit the hue to 0...360 degrees */
+
+
+void hsv2rgb_8b(int16_t h, uint8_t s, uint8_t v, uint8_t *r, uint8_t *g , uint8_t *b);
+
+
+/*
+ * Macros that are common to all implementations
+ */
+#ifdef HSV_USE_SEXTANT_TEST
+#define HSV_SEXTANT_TEST(sextant) \
+	if((sextant) > 5) { \
+		(sextant) = 5; \
+	}
+
+#else
+#define HSV_SEXTANT_TEST(sextant)
+#endif
+
+/*
+ * Pointer swapping:
+ * 	sext.	r g b	r<>b	g<>b	r <> g	result
+ *	0 0 0	v u c			!u v c	u v c
+ *	0 0 1	d v c				d v c
+ *	0 1 0	c v u	u v c			u v c
+ *	0 1 1	c d v	v d c		d v c	d v c
+ *	1 0 0	u c v		u v c		u v c
+ *	1 0 1	v c d		v d c	d v c	d v c
+ *
+ * if(sextant & 2)
+ * 	r <-> b
+ *
+ * if(sextant & 4)
+ * 	g <-> b
+ *
+ * if(!(sextant & 6) {
+ * 	if(!(sextant & 1))
+ * 		r <-> g
+ * } else {
+ * 	if(sextant & 1)
+ * 		r <-> g
+ * }
+ */
+#define HSV_SWAPPTR(a,b)	do { uint8_t *tmp = (a); (a) = (b); (b) = tmp; } while(0)
+#define HSV_POINTER_SWAP(sextant,r,g,b) \
+	do { \
+		if((sextant) & 2) { \
+			HSV_SWAPPTR((r), (b)); \
+		} \
+		if((sextant) & 4) { \
+			HSV_SWAPPTR((g), (b)); \
+		} \
+		if(!((sextant) & 6)) { \
+			if(!((sextant) & 1)) { \
+				HSV_SWAPPTR((r), (g)); \
+			} \
+		} else { \
+			if((sextant) & 1) { \
+				HSV_SWAPPTR((r), (g)); \
+			} \
+		} \
+	} while(0)
+
+
+
+#endif /* _INC_HSV2RGB_H */

include/rgbprog.h

@@ -0,0 +1,16 @@
+/*
+ * rgbprog.h: making your eyes light up
+ *
+ * file creation: 20231021 2338
+ */
+
+#ifndef _INC_RGBPROG_H
+#define _INC_RGBPROG_H
+
+
+
+void rgbprog_run();
+
+
+
+#endif /* _INC_RGBPROG_H */

include/userio.h

@@ -30,6 +30,7 @@ extern uint8_t knob[2];
 void userio_parse();
 
 uint8_t userio_get_mode();
+int16_t userio_get_btn();