ukkonooa and frequency slider

main/headers/arraylen.h

@@ -0,0 +1,6 @@
+#ifndef ARRAY_LEN_H_
+#define ARRAY_LEN_H_
+
+#define ARRAY_LEN(arr) (sizeof(arr) / sizeof(arr[0]))
+
+#endif // ARRAY_LEN_H_

main/headers/buzzer.h

@@ -0,0 +1,14 @@
+#ifndef BUZZER_H_
+#define BUZZER_H_
+
+#include <stdint.h>
+
+void buzzer_init(const uint32_t frequency);
+uint32_t modify_frequency(int amount);
+uint32_t reset_frequency();
+void set_frequency(const uint32_t freq);
+void buzzer_pause();
+void buzzer_reset();
+void buzzer_resume();
+
+#endif // BUZZER_H_

main/headers/freq_slider.h

@@ -0,0 +1,6 @@
+#ifndef FREQ_SLIDER_H_
+#define FREQ_SLIDER_H_
+
+void freq_slider_task(void* param);
+
+#endif // FREQ_SLIDER_H_

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_