Steven Clark
/
NucleoDACSawtoothMBDev
Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Fork of
NucleoDACSawtooth
by 
Steven Clark
Diff: main.cpp
- Revision:
- 0:36e3fe60f8d1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Nov 01 23:26:49 2017 +0000
@@ -0,0 +1,30 @@
+#include "mbed.h"
+
+AnalogIn volumeKnob(PA_0);
+AnalogIn frequencyKnob(PA_1);
+AnalogOut speakerAmp(PA_4);
+
+
+/*----------------------------------------------------------------------------
+ MAIN function
+ *----------------------------------------------------------------------------*/
+
+
+
+int main(){
+ double phase;
+ double d_phase;
+ double phase_remainder = 0;
+ //speakerAmp.period_us(4.0);
+ while(true){
+ d_phase = ((double)frequencyKnob * (double)frequencyKnob * (8000-320) + 320) * 0.000004;
+ for(phase = phase_remainder; phase < 1; phase+= d_phase){
+ speakerAmp = volumeKnob * phase;
+ wait_us(4.0);
+ }
+ phase_remainder = phase - 1.0;
+ }
+
+}
+
+