[hal] Initial SystemCore empty HAL (#7454)

hal/src/main/native/systemcore/DutyCycle.cpp

@@ -0,0 +1,64 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#include "hal/DutyCycle.h"
+
+#include <memory>
+
+#include "HALInitializer.h"
+#include "PortsInternal.h"
+#include "hal/Errors.h"
+#include "hal/handles/HandlesInternal.h"
+#include "hal/handles/LimitedHandleResource.h"
+
+using namespace hal;
+
+namespace hal::init {
+void InitializeDutyCycle() {}
+}  // namespace hal::init
+
+extern "C" {
+HAL_DutyCycleHandle HAL_InitializeDutyCycle(HAL_Handle digitalSourceHandle,
+                                            HAL_AnalogTriggerType triggerType,
+                                            int32_t* status) {
+  hal::init::CheckInit();
+
+  *status = HAL_HANDLE_ERROR;
+  return HAL_kInvalidHandle;
+}
+void HAL_FreeDutyCycle(HAL_DutyCycleHandle dutyCycleHandle) {}
+
+void HAL_SetDutyCycleSimDevice(HAL_EncoderHandle handle,
+                               HAL_SimDeviceHandle device) {}
+
+int32_t HAL_GetDutyCycleFrequency(HAL_DutyCycleHandle dutyCycleHandle,
+                                  int32_t* status) {
+  *status = HAL_HANDLE_ERROR;
+  return 0;
+}
+
+double HAL_GetDutyCycleOutput(HAL_DutyCycleHandle dutyCycleHandle,
+                              int32_t* status) {
+  *status = HAL_HANDLE_ERROR;
+  return 0;
+}
+
+int32_t HAL_GetDutyCycleHighTime(HAL_DutyCycleHandle dutyCycleHandle,
+                                 int32_t* status) {
+  *status = HAL_HANDLE_ERROR;
+  return 0;
+}
+
+int32_t HAL_GetDutyCycleOutputScaleFactor(HAL_DutyCycleHandle dutyCycleHandle,
+                                          int32_t* status) {
+  *status = HAL_HANDLE_ERROR;
+  return 0;
+}
+
+int32_t HAL_GetDutyCycleFPGAIndex(HAL_DutyCycleHandle dutyCycleHandle,
+                                  int32_t* status) {
+  *status = HAL_HANDLE_ERROR;
+  return 0;
+}
+}  // extern "C"