Diff: main.cpp

Revision:

0:77987057a515

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Nov 23 22:37:23 2016 +0000
@@ -0,0 +1,48 @@
+#include "mbed.h"
+ 
+PwmOut speaker(p26);
+AnalogIn pot1(p19);
+AnalogIn pot2(p20);
+DigitalIn joystickCenter(p14);
+ 
+int main() {
+    /* note frequencies in Hz
+    * rows: C C# D Eb E F F# G G# A Bb B
+    * columns: 0 1 2 3 4 5 6 7 8
+    */
+    enum noteNames {A3, E4, GH4, A4, B4, CH5, DH5, E5, FH5, GH5, A5, B5, CH6, DH6, E6, FH6, GH6, A6, B6, CH7, DH7, E7, B7};
+    float nt[23][9] = { {220.0}, {329.63}, {415.30}, {440.0}, {493.88}, {554.37}, {622.25}, {659.25}, {739.99}, {830.61}, {880.0}, {987.77}, {1108.73},
+                        {1244.51}, {1318.51}, {1479.98}, {1661.22}, {1760.0}, {1975.53}, {2217.46}, {2489.02}, {2637.02}, {3951.07} };
+    for (int i = 0; i < 12; i++) 
+        for (int j = 1; j < 9; j++) 
+            nt[i][j] = nt[i][j-1] * 2;
+    
+    while(1) {
+        int scale = 0 * 8;
+        float speed = 0.05 + pot1;
+        float notesHere_with_you[] = {nt[E6][scale], 0, nt[E7][scale], 0, nt[DH7][scale], 0, nt[E6][scale], 0, nt[CH7][scale], 0, nt[A5][scale], 0,
+                                nt[B4][scale], 0, nt[FH5][scale], 0, nt[FH6][scale], 0, nt[E6][scale], 0, nt[DH6][scale], 0, nt[E5][scale], 0, nt[DH5][scale], 0,
+                                nt[CH5][scale], 0, nt[E7][scale], 0, nt[DH7][scale], 0, nt[E6][scale], 0, nt[CH7][scale], 0, nt[A5][scale], 0, nt[B4][scale], 0,
+                                nt[FH5][scale], 0, nt[B5][scale], 0, nt[E6][scale], 0, nt[DH6][scale], 0, nt[B5][scale], 0, nt[A3][scale], 0, nt[E4][scale], 0,
+                                nt[CH6][scale], 0, nt[E5][scale], 0, nt[DH6][scale], 0, nt[E5][scale], 0, nt[E6][scale], 0, nt[E5][scale], 0, nt[B5][scale], 0,
+                                nt[E4][scale], 0, nt[GH4][scale], 0, nt[B4][scale], 0, nt[E5][scale], 0, nt[A3][scale], 0, nt[E4][scale], 0, nt[CH6][scale], 0,
+                                nt[E5][scale], 0, nt[DH6][scale], 0, nt[E5][scale], 0, nt[E6][scale], 0, nt[E5][scale], 0, nt[E6][scale], 0, nt[FH6][scale], 0,
+                                nt[B6][scale], 0, nt[GH6][scale], 0, nt[E5][scale], 0, nt[GH6][scale], 0, nt[CH6][scale], 0, nt[DH6][scale], 0, nt[E6][scale], 0,
+                                nt[A3][scale], 0, nt[A4][scale], 0, nt[A3][scale], 0, nt[E4][scale], 0, nt[E5][scale], 0, nt[B5][scale], 0, nt[E6][scale], 0,
+                                nt[B6][scale], 0, nt[A6][scale], 0, nt[E7][scale], 0, nt[E6][scale], 0, nt[A6][scale], 0, nt[E7][scale], 0, nt[B7][scale], 0};
+        float beatHere_with_you[] =  {2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 4, 0.5, 4, 0.5, 2, 0.5, 2, 0.5, 0.25, 0.5, 2.75, 0.5, 1, 0.5, 5, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5,
+                                2, 0.5, 4, 0.5, 4, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 4, 4, 0.5, 4, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 
+                                2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 4, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 0.25, 0.5, 1.25, 0.5, 
+                                2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 1, 0.5, 1, 0.5, 2, 0.5, 2, 0.5, 1, 0.5, 3, 0.5, 2, 0.5, 2, 0.5, 2, 0.5, 2, 0.5,
+                                2, 0.5, 2, 0.5, 2, 0.5, 2, 4, 4 };
+        wait(4);
+        
+        for (int i = 0; i < 100; i++) {
+            speaker.period(1 / (2*notesHere_with_you[i]) );
+            speaker = 0.5;
+            wait(speed * beatHere_with_you[i]);
+        }
+        if (joystickCenter) // press joystick center to stop playing
+            break;
+    }
+}
\ No newline at end of file