The "Practice60" Board, Blue Pill powered (#4407)

* Starting point for blue pill based practice60

* Changes

* add

* try raw bin no botloader

* swap back to bootloader version

* edit

* Remove debug LED flash

* Disable JTAG to open up B3 and B4

* Add led backlight support (no breathing yet)

* Update matrix for correctness

* RGB Underglow working in a very simple state

* not as bright

* Move to handwired

* revert ChibiOS_Test changes

* Changes based on PR comments

* Address PR comments v2

* Move files

keyboards/handwired/practice60/hsv2rgb.h

@@ -0,0 +1,23 @@
+/* hsv2rgb.h
+ * Convert Hue Saturation Value to Red Green Blue
+ *
+ * Programme de convertion d'une information HSV en RGB
+ */
+#ifndef HSV2RGB_H
+#define HSV2RGB_H
+
+typedef struct {
+  unsigned char h;
+  unsigned char s;
+  unsigned char v;
+} hsv_color;
+
+typedef struct {
+  unsigned char r;
+  unsigned char g;
+  unsigned char b;
+} rgb_color;
+
+rgb_color hsv2rgb(hsv_color hsv);
+
+#endif