Squashed 'third_party/allwpilib_2016/' content from commit 7f61816

Change-Id: If9d9245880859cdf580f5d7f77045135d0521ce7
git-subtree-dir: third_party/allwpilib_2016
git-subtree-split: 7f618166ed253a24629934fcf89c3decb0528a3b
diff --git a/wpilibc/shared/include/Commands/PIDCommand.h b/wpilibc/shared/include/Commands/PIDCommand.h
new file mode 100644
index 0000000..d67c063
--- /dev/null
+++ b/wpilibc/shared/include/Commands/PIDCommand.h
@@ -0,0 +1,58 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2011. 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 $(WIND_BASE)/WPILib.  */
+/*----------------------------------------------------------------------------*/
+
+#ifndef __PID_COMMAND_H__
+#define __PID_COMMAND_H__
+
+#include "Commands/Command.h"
+#include "PIDController.h"
+#include "PIDSource.h"
+#include "PIDOutput.h"
+
+#include <memory>
+
+class PIDCommand : public Command, public PIDOutput, public PIDSource {
+ public:
+  PIDCommand(const std::string &name, double p, double i, double d);
+  PIDCommand(const std::string &name, double p, double i, double d, double period);
+  PIDCommand(const std::string &name, double p, double i, double d, double f,
+             double period);
+  PIDCommand(double p, double i, double d);
+  PIDCommand(double p, double i, double d, double period);
+  PIDCommand(double p, double i, double d, double f, double period);
+  virtual ~PIDCommand() = default;
+
+  void SetSetpointRelative(double deltaSetpoint);
+
+  // PIDOutput interface
+  virtual void PIDWrite(float output);
+
+  // PIDSource interface
+  virtual double PIDGet();
+
+ protected:
+  std::shared_ptr<PIDController> GetPIDController() const;
+  virtual void _Initialize();
+  virtual void _Interrupted();
+  virtual void _End();
+  void SetSetpoint(double setpoint);
+  double GetSetpoint() const;
+  double GetPosition();
+
+  virtual double ReturnPIDInput() = 0;
+  virtual void UsePIDOutput(double output) = 0;
+
+ private:
+  /** The internal {@link PIDController} */
+  std::shared_ptr<PIDController> m_controller;
+
+ public:
+  virtual void InitTable(std::shared_ptr<ITable> table);
+  virtual std::string GetSmartDashboardType() const;
+};
+
+#endif