Diff: SignalGenDAC.h

Revision:

5:49dd0c647a40

Parent:

4:10281ddb673d

Child:

6:1f48212fbaf9

--- a/SignalGenDAC.h	Mon Jan 16 21:05:13 2017 +0000
+++ b/SignalGenDAC.h	Mon Jan 16 22:57:59 2017 +0000
@@ -17,12 +17,15 @@
 public:
 
     /// Constructor, which is used to define the hardware
+    /// 
+    /// The default parameters are based on the mbed LPC1768 micro, which has
+    /// AnalogOut on p18 and uses a 3.3v supply for the A/D reference.
     ///
     /// @param[in] aout is the analog output pin
     /// @param[in] minV is based on the A/D low reference voltage (default 0.0)
-    /// @param[in] maxV is based on the A/D high reference voltage (default 3.0)
+    /// @param[in] maxV is based on the A/D high reference voltage (default 3.3)
     ///
-    SignalGenDAC(PinName aout, float minV = 0.0, float maxV = 3.0);
+    SignalGenDAC(PinName aout = p18, float minV = 0.0, float maxV = 3.3);
 
     /// Destructor
     ///
@@ -59,6 +62,10 @@
 private:
     bool isOn;              // tracks whether the signal is on or off
     AnalogOut * aout;
+    float frequency;        // signal parameters
+    float dutycycle;
+    float voltage;
+    float offset;
     float minV;             // Based on the A/D hardware
     float maxV;             // Based on the A/D hardware
     /// range limit a value.