Diff: main.cpp

Revision:

0:2aca3f53fe79

Child:

1:c8943c51b10d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jan 13 09:22:46 2020 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+
+#define PI 3.14159
+
+AnalogOut dacOutput(p18);   // Ausgangs Pin 18
+Ticker valueTicker;
+float voltageValues[100];   // 100 Punkte
+int actualPoint;            // Aktueller Punkt
+int outputMode = 1;         // 1 = Sägezahn, 2 = Rechteck, 3 = Sinus
+
+void outputToDAC()
+{
+    dacOutput.write(voltageValues[actualPoint]);
+    actualPoint++;
+    if(actualPoint >= 100)
+    {
+        actualPoint = 0;
+    }
+}
+
+int main()
+{
+    actualPoint = 0;
+    
+    for(int i = 0; i < 100; i++)
+    {
+        switch(outputMode)
+        {
+            case 1:
+                voltageValues[i] = (float)i / 100.0f;;
+                break;
+            case 2:
+                voltageValues[i] = i <= 49 ? 1 : 0;
+                break;
+            case 3:
+                voltageValues[i] = 0.5f * sin(((float)i * PI) * 3.6f / 180) + 0.5f; // w = 6283 = 2 * PI * f
+                break;
+        }
+    }
+    
+    valueTicker.attach_us(&outputToDAC, 10);
+    
+    while(1)
+    {
+    }
+}