TVZ Mechatronics Team / Mbed 2 deprecated MAB_PWM_Speaker

A program for playing Ciciban song. All notes are included, so any song can be easily added if you know its notes.

Dependencies:   mbed

main.cpp@1:a92e43e7429e, 2016-11-19 (annotated)

Committer:
tbjazic
Date:
Sat Nov 19 10:40:47 2016 +0000
Revision:
1:a92e43e7429e
Parent:
0:c84a78a490d0 
Adjusted frequency.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tbjazic 0:c84a78a490d0 1 #include "mbed.h"
tbjazic 0:c84a78a490d0 2
tbjazic 0:c84a78a490d0 3 PwmOut speaker(p26);
tbjazic 0:c84a78a490d0 4 AnalogIn pot1(p19);
tbjazic 0:c84a78a490d0 5 AnalogIn pot2(p20);
tbjazic 0:c84a78a490d0 6 DigitalIn joystickCenter(p14);
tbjazic 0:c84a78a490d0 7
tbjazic 0:c84a78a490d0 8 int main() {
tbjazic 0:c84a78a490d0 9 /* note frequencies in Hz
tbjazic 0:c84a78a490d0 10 * rows: C C# D Eb E F F# G G# A Bb B
tbjazic 0:c84a78a490d0 11 * columns: 0 1 2 3 4 5 6 7 8
tbjazic 0:c84a78a490d0 12 */
tbjazic 0:c84a78a490d0 13 enum noteNames {C, Cs, D, Eb, E, F, Fs, G, Gs, A, Bb, B};
tbjazic 0:c84a78a490d0 14 float nt[12][9] = { {16.35}, {17.32}, {18.35}, {19.45}, {20.60}, {21.83},
tbjazic 0:c84a78a490d0 15 {23.12}, {24.5}, {25.96}, {27.5}, {29.14}, {30.87} };
tbjazic 0:c84a78a490d0 16 for (int i = 0; i < 12; i++)
tbjazic 0:c84a78a490d0 17 for (int j = 1; j < 9; j++)
tbjazic 0:c84a78a490d0 18 nt[i][j] = nt[i][j-1] * 2;
tbjazic 0:c84a78a490d0 19
tbjazic 0:c84a78a490d0 20 while(1) {
tbjazic 0:c84a78a490d0 21 int scale = pot2 * 8;
tbjazic 0:c84a78a490d0 22 float speed = 0.05 + pot1; // minimum wait is 50 ms
tbjazic 0:c84a78a490d0 23 float notesCiciban[] = {nt[G][scale], 0, nt[G][scale], 0, nt[E][scale], 0,
tbjazic 0:c84a78a490d0 24 nt[G][scale], 0, nt[G][scale], 0, nt[E][scale], 0,
tbjazic 0:c84a78a490d0 25 nt[G][scale], 0, nt[G][scale], 0, nt[E][scale], 0, nt[E][scale], 0,
tbjazic 0:c84a78a490d0 26 nt[G][scale], 0, nt[E][scale], 0, nt[C][scale], 0};
tbjazic 0:c84a78a490d0 27 float beatCiciban[] = {1, 0.5, 1, 0.5, 2, 0.5,
tbjazic 0:c84a78a490d0 28 1, 0.5, 1, 0.5, 2, 0.5,
tbjazic 0:c84a78a490d0 29 1, 0.5, 1, 0.5, 1, 0.5, 1, 0.5,
tbjazic 0:c84a78a490d0 30 1, 0.5, 1, 0.5, 2, 5};
tbjazic 0:c84a78a490d0 31
tbjazic 0:c84a78a490d0 32 for (int i = 0; i < 26; i++) {
tbjazic 1:a92e43e7429e 33 speaker.period(1 / (2*notesCiciban[i]) );
tbjazic 0:c84a78a490d0 34 speaker = 0.5;
tbjazic 0:c84a78a490d0 35 wait(speed * beatCiciban[i]);
tbjazic 0:c84a78a490d0 36 }
tbjazic 0:c84a78a490d0 37 if (joystickCenter) // press joystick center to stop playing
tbjazic 0:c84a78a490d0 38 break;
tbjazic 0:c84a78a490d0 39 }
tbjazic 0:c84a78a490d0 40 }