ukkonooa and frequency slider

main/headers/un.h

@@ -0,0 +1,23 @@
+#ifndef UN_H_
+#define UN_H_
+
+#include <stdint.h>
+
+// https://mixbutton.com/music-tools/frequency-and-pitch/music-note-to-frequency-chart
+
+// Octave 2
+// typedef enum { P = -1, C = 65, D = 73, E = 82, F = 87, G = 98 } NoteFreq;
+
+// Octave 4
+typedef enum { P = -1, C = 262, D = 294, E = 330, F = 349, G = 392 } NoteFreq;
+
+typedef struct {
+    NoteFreq note;
+    uint32_t length;
+} Note;
+
+const char* NoteFreqToStr(NoteFreq note);
+void play_note(Note* note);
+void un_task(void* param);
+
+#endif // UN_H_