TVZ Mechatronics Team / Mbed 2 deprecated MAB_Waveforms_C

A simple sinewave generator with adjustable amplitude and frequency over potentiometers.

Dependencies:   mbed

Diff: main.cpp

Revision:
0:ea6a4849f64a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Dec 18 08:39:42 2014 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+
+AnalogOut out(p18);
+AnalogIn pot1(p19);
+AnalogIn pot2(p20);
+
+int main() {
+    float A, f, T; // sine peak-to-peak amplitude, frequency and period
+    float Ts; // sampling time
+    const float PI = 3.14159265;
+    int numberOfPoints = 100;
+    while(1) {
+        A = pot1; // amplitude in range 0 to 3.3 V
+        f = 10 + 10 * pot2; // frequency in range 10 to 20 Hz
+        T = 1/f;
+        Ts = T / numberOfPoints;
+        for (int i = 0; i < numberOfPoints; i++) {
+            out = 0.5 + A/2 * sin(2 * PI * f * i * Ts);
+            wait(Ts);
+        }
+    }
+}
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