Applied engineering Team
Program koji koristi PWM izlaz i piezo zvučnik za sviranje
Dependencies: mbed
Fork of
MAB_PWM_Speaker
by 
TVZ Mechatronics Team
Revision 0:c84a78a490d0, committed 2014-12-18
- Comitter:
- tbjazic
- Date:
- Thu Dec 18 17:01:08 2014 +0000
- Commit message:
- Initial commit.
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r c84a78a490d0 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Dec 18 17:01:08 2014 +0000
@@ -0,0 +1,40 @@
+#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 {C, Cs, D, Eb, E, F, Fs, G, Gs, A, Bb, B};
+ float nt[12][9] = { {16.35}, {17.32}, {18.35}, {19.45}, {20.60}, {21.83},
+ {23.12}, {24.5}, {25.96}, {27.5}, {29.14}, {30.87} };
+ 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 = pot2 * 8;
+ float speed = 0.05 + pot1; // minimum wait is 50 ms
+ float notesCiciban[] = {nt[G][scale], 0, nt[G][scale], 0, nt[E][scale], 0,
+ nt[G][scale], 0, nt[G][scale], 0, nt[E][scale], 0,
+ nt[G][scale], 0, nt[G][scale], 0, nt[E][scale], 0, nt[E][scale], 0,
+ nt[G][scale], 0, nt[E][scale], 0, nt[C][scale], 0};
+ float beatCiciban[] = {1, 0.5, 1, 0.5, 2, 0.5,
+ 1, 0.5, 1, 0.5, 2, 0.5,
+ 1, 0.5, 1, 0.5, 1, 0.5, 1, 0.5,
+ 1, 0.5, 1, 0.5, 2, 5};
+
+ for (int i = 0; i < 26; i++) {
+ speaker.period(1 / notesCiciban[i]);
+ speaker = 0.5;
+ wait(speed * beatCiciban[i]);
+ }
+ if (joystickCenter) // press joystick center to stop playing
+ break;
+ }
+}
diff -r 000000000000 -r c84a78a490d0 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Dec 18 17:01:08 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file