Diff: digipot.cpp

Revision:

2:520eb3d16c18

Parent:

1:0b0025664bb7

--- a/digipot.cpp	Fri Apr 03 20:29:42 2015 +0000
+++ b/digipot.cpp	Fri Apr 10 19:20:24 2015 +0000
@@ -2,11 +2,11 @@
 
 #include "mbed.h"
 
-static int id = 0x04;       //Module CAN ID, to be assigned by keypad team.
+static int id = 0x02;       //Module CAN ID, to be assigned by keypad team.
 static double input_amp = 3.3; //input analog signal is 3.3V
 
-static double R1 = 9.84;    //Opamp resistor between inverting-input and ground
-static double R2 = 5.47;    //Opamp resistor between output and inverting-input
+static double R1 = 9.80;    //Opamp resistor between inverting-input and ground
+static double R2 = 5.49;    //Opamp resistor between output and inverting-input
 static double gain = 1 + R2/R1; //Non-inverting opamp gain
 
 //Debugging Variables
@@ -35,6 +35,8 @@
     spi.write(0x11);      // Write data command, potentiometer zero
     spi.write(wiper);           // Writes wiper value
     
+    printf("Wiper Value = %d \n",wiper);
+    
     CS=1;                       // Selects the digipot, and executes command
 }
 
@@ -52,7 +54,7 @@
 
 int main()
 {
-        ticker.attach(&send,10);    //Debugging: Changes output amplitude every 10 seconds
+        ticker.attach(&send,5);    //Debugging: Changes output amplitude every 3 seconds
         
         int OutputAmp = 0;  //Default output amplitude value
         digipot(OutputAmp);