Add 'heartbeat'

.project

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>electronic-leadscrew</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+	</natures>
+</projectDescription>

els-f280049c/Debug.cpp

@@ -35,13 +35,25 @@ Debug :: Debug( void )
 
 void Debug :: initHardware( void )
 {
+    // Initialize GPIO
+    // Doesn't work if put after EALLOW
+    InitGpio();
+
     // set up GPIO pins as output for debugging
     EALLOW;
+
     GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 0;
     GpioCtrlRegs.GPADIR.bit.GPIO2 = 1;
     GpioDataRegs.GPACLEAR.bit.GPIO2 = 1;
+
     GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 0;
     GpioCtrlRegs.GPADIR.bit.GPIO3 = 1;
     GpioDataRegs.GPACLEAR.bit.GPIO3 = 1;
+
+    // LED4 on LAUNCHXL (red)
+    GpioCtrlRegs.GPAMUX2.bit.GPIO23 = 0;
+    GpioCtrlRegs.GPADIR.bit.GPIO23 = 1;
+    GpioDataRegs.GPACLEAR.bit.GPIO23 = 1;
+
     EDIS;
 }

els-f280049c/Debug.h

@@ -31,6 +31,9 @@
 
 class Debug
 {
+private:
+    Uint16 heartbeatCount;
+
 public:
     Debug(void);
     void initHardware(void);
@@ -42,6 +45,8 @@ class Debug
     // analyzer pin 2
     void begin2( void );
     void end2( void );
+
+    void heartbeat( void );
 };
 
 
@@ -65,5 +70,28 @@ inline void Debug :: end2( void )
     GpioDataRegs.GPACLEAR.bit.GPIO3 = 1;
 }
 
+inline void Debug :: heartbeat( void )
+{
+    ++heartbeatCount;
+
+    if (heartbeatCount > 50)
+    {
+        heartbeatCount = 1;
+    }
+
+    if (heartbeatCount == 15)
+    {
+        // Turn off red LED and turn on green LED
+        GpioDataRegs.GPASET.bit.GPIO23 = 1;
+        GpioDataRegs.GPBCLEAR.bit.GPIO34 = 1;
+    }
+
+    if (heartbeatCount == 1)
+    {
+        // Turn on red LED and turn off green LED
+        GpioDataRegs.GPACLEAR.bit.GPIO23 = 1;
+        GpioDataRegs.GPBSET.bit.GPIO34 = 1;
+    }
+}
 
 #endif // __DEBUG_H

els-f280049c/main.cpp

@@ -139,6 +139,9 @@ void main(void)
         // mark beginning of loop for debugging
         debug.begin2();
 
+        // service heartbeat
+        debug.heartbeat();
+
         // service the user interface
         userInterface.loop();