Added C++ sample for CAN monitoring of PDP.

Uses CAN to monitor PDP and displays values on the SmartDashboard.

Change-Id: Icb06fec0b65ce02b7c396e7d4e379cee0d959095

eclipse-plugins/edu.wpi.first.wpilib.plugins.cpp/resources/templates/examples/CANPDP/src/Robot.cpp

@@ -0,0 +1,47 @@
+#include "WPILib.h"
+
+/**
+ * This is a sample program showing how to retrieve information from
+ *   the Power Distribution Panel via CAN.
+ * The information will be displayed under variables through the SmartDashboard.
+ */
+class Robot: public SampleRobot
+{
+
+	// Object for dealing with the Power Distribution Panel (PDP).
+	PowerDistributionPanel m_pdp;
+
+	// Update every 5milliseconds/0.005 seconds.
+	const double kUpdatePeriod = 0.005;
+
+public:
+	Robot() {
+	}
+
+	/**
+	 * Retrieve information from the PDP over CAN and
+	 *   displays it on the SmartDashboard interface.
+	 * SmartDashboard::PutNumber takes a string (for a label) and a double;
+	 * GetCurrent takes a channel number and returns a double for current,
+	 *   in Amperes. Channel numbers are printed on the PDP and range from 0-15.
+	 */
+	void OperatorControl()
+	{
+		while (IsOperatorControl())
+		{
+			// Get the current going through channel 7, in Amperes.
+			// The PDP returns the current in increments of 0.125A.
+			// At low currents the current readings tend to be less accurate. 
+			SmartDashboard::PutNumber("Current Channel 7", m_pdp.GetCurrent(7));
+			// Get the voltage going into the PDP, in Volts.
+			// The PDP returns the voltage in increments of 0.05 Volts.
+			SmartDashboard::PutNumber("Voltage", m_pdp.GetVoltage());
+			// Retrieves the temperature of the PDP, in degrees Celsius.
+			SmartDashboard::PutNumber("Temperature", m_pdp.GetTemperature());
+			Wait(kUpdatePeriod);
+		}
+	}
+
+};
+
+START_ROBOT_CLASS(Robot);