Add XboxController examples for arcade and tank drive (#2058)

wpilibcExamples/src/main/cpp/examples/TankDriveXboxController/cpp/Robot.cpp

@@ -0,0 +1,35 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2019 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include <frc/GenericHID.h>
+#include <frc/PWMVictorSPX.h>
+#include <frc/TimedRobot.h>
+#include <frc/XboxController.h>
+#include <frc/drive/DifferentialDrive.h>
+
+/**
+ * This is a demo program showing the use of the DifferentialDrive class.
+ * Runs the motors with tank steering and an Xbox controller.
+ */
+class Robot : public frc::TimedRobot {
+  frc::PWMVictorSPX m_leftMotor{0};
+  frc::PWMVictorSPX m_rightMotor{1};
+  frc::DifferentialDrive m_robotDrive{m_leftMotor, m_rightMotor};
+  frc::XboxController m_driverController{0};
+
+ public:
+  void TeleopPeriodic() {
+    // Drive with tank style
+    m_robotDrive.TankDrive(
+        m_driverController.GetY(frc::GenericHID::JoystickHand::kLeftHand),
+        m_driverController.GetY(frc::GenericHID::JoystickHand::kRightHand));
+  }
+};
+
+#ifndef RUNNING_FRC_TESTS
+int main() { return frc::StartRobot<Robot>(); }
+#endif