added set digipot current command 'V'

Test_Jig_Firmware.ino

@@ -36,6 +36,7 @@ byte startReads = 0;
 unsigned long stepperCount[5][5];
 char port;
 char state; 
+uint8_t current;
 
 void setup()
 { 
@@ -255,6 +256,20 @@ void loop()
         break;
       }
 
+      //Set Digital Trimpot
+      //Format: V<255>
+    case 'V' :
+      {
+        if(isDigit(Serial.peek()))
+        {
+          current = Serial.parseInt();
+          DEBUG_PRINT("setting digital trimpot: ", current);
+          digipot::setMotorCurrent(current);
+        }
+        finished();
+        break;
+      }
+
 
       //Monitor Stepper test
       //Format: M<pin to watch>F<frequency>

digipot.cpp

@@ -28,4 +28,11 @@ void digipot::init() //Initialize Digipot Motor Current
     setVoltage(i,digipot_motor_current[i]);
 }
 
+void digipot::setMotorCurrent(uint8_t current) //Set Digipot Motor Current
+{
 
+  SPI.begin();
+  pinMode(DIGIPOTSS_PIN, OUTPUT);
+  for(byte i=0; i<=4; i++)
+    setVoltage(i,current);
+}

digipot.h

@@ -7,5 +7,6 @@ namespace digipot{
   void write(byte address, byte value);
   void init();
   void setVoltage(byte driver, byte current);
+  void setMotorCurrent(uint8_t current); //Set Digipot Motor Current
 }
 #endif