Add FPGA Duty Cycle support (#1987)

hal/src/main/native/sim/mockdata/DutyCycleDataInternal.h

@@ -0,0 +1,33 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 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.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <atomic>
+#include <limits>
+
+#include "mockdata/DutyCycleData.h"
+#include "mockdata/SimDataValue.h"
+
+namespace hal {
+class DutyCycleData {
+  HAL_SIMDATAVALUE_DEFINE_NAME(Initialized)
+  HAL_SIMDATAVALUE_DEFINE_NAME(Output)
+  HAL_SIMDATAVALUE_DEFINE_NAME(Frequency)
+
+ public:
+  std::atomic<int32_t> digitalChannel{0};
+  SimDataValue<HAL_Bool, HAL_MakeBoolean, GetInitializedName> initialized{
+      false};
+  std::atomic<HAL_SimDeviceHandle> simDevice;
+  SimDataValue<int32_t, HAL_MakeInt, GetFrequencyName> frequency{0};
+  SimDataValue<double, HAL_MakeDouble, GetOutputName> output{0};
+
+  virtual void ResetData();
+};
+extern DutyCycleData* SimDutyCycleData;
+}  // namespace hal