Rename our allwpilib (which is now 2020) to not have 2019 in the name

Change-Id: I3c07f85ed32ab8b97db765a9b43f2a6ce7da964a
diff --git a/hal/src/main/native/sim/DIO.cpp b/hal/src/main/native/sim/DIO.cpp
new file mode 100644
index 0000000..2158136
--- /dev/null
+++ b/hal/src/main/native/sim/DIO.cpp
@@ -0,0 +1,253 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2016-2019 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 "hal/DIO.h"
+
+#include <cmath>
+
+#include "DigitalInternal.h"
+#include "HALInitializer.h"
+#include "PortsInternal.h"
+#include "hal/handles/HandlesInternal.h"
+#include "hal/handles/LimitedHandleResource.h"
+#include "mockdata/DIODataInternal.h"
+#include "mockdata/DigitalPWMDataInternal.h"
+
+using namespace hal;
+
+static LimitedHandleResource<HAL_DigitalPWMHandle, uint8_t,
+                             kNumDigitalPWMOutputs, HAL_HandleEnum::DigitalPWM>*
+    digitalPWMHandles;
+
+namespace hal {
+namespace init {
+void InitializeDIO() {
+  static LimitedHandleResource<HAL_DigitalPWMHandle, uint8_t,
+                               kNumDigitalPWMOutputs,
+                               HAL_HandleEnum::DigitalPWM>
+      dpH;
+  digitalPWMHandles = &dpH;
+}
+}  // namespace init
+}  // namespace hal
+
+extern "C" {
+
+HAL_DigitalHandle HAL_InitializeDIOPort(HAL_PortHandle portHandle,
+                                        HAL_Bool input, int32_t* status) {
+  hal::init::CheckInit();
+  if (*status != 0) return HAL_kInvalidHandle;
+
+  int16_t channel = getPortHandleChannel(portHandle);
+  if (channel == InvalidHandleIndex) {
+    *status = PARAMETER_OUT_OF_RANGE;
+    return HAL_kInvalidHandle;
+  }
+
+  auto handle =
+      digitalChannelHandles->Allocate(channel, HAL_HandleEnum::DIO, status);
+
+  if (*status != 0)
+    return HAL_kInvalidHandle;  // failed to allocate. Pass error back.
+
+  auto port = digitalChannelHandles->Get(handle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {  // would only occur on thread issue.
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+
+  port->channel = static_cast<uint8_t>(channel);
+
+  SimDIOData[channel].initialized = true;
+  SimDIOData[channel].isInput = input;
+  SimDIOData[channel].simDevice = 0;
+
+  return handle;
+}
+
+HAL_Bool HAL_CheckDIOChannel(int32_t channel) {
+  return channel < kNumDigitalChannels && channel >= 0;
+}
+
+void HAL_FreeDIOPort(HAL_DigitalHandle dioPortHandle) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  // no status, so no need to check for a proper free.
+  digitalChannelHandles->Free(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) return;
+  SimDIOData[port->channel].initialized = false;
+}
+
+void HAL_SetDIOSimDevice(HAL_DigitalHandle handle, HAL_SimDeviceHandle device) {
+  auto port = digitalChannelHandles->Get(handle, HAL_HandleEnum::DIO);
+  if (port == nullptr) return;
+  SimDIOData[port->channel].simDevice = device;
+}
+
+HAL_DigitalPWMHandle HAL_AllocateDigitalPWM(int32_t* status) {
+  auto handle = digitalPWMHandles->Allocate();
+  if (handle == HAL_kInvalidHandle) {
+    *status = NO_AVAILABLE_RESOURCES;
+    return HAL_kInvalidHandle;
+  }
+
+  auto id = digitalPWMHandles->Get(handle);
+  if (id == nullptr) {  // would only occur on thread issue.
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+  *id = static_cast<uint8_t>(getHandleIndex(handle));
+
+  SimDigitalPWMData[*id].initialized = true;
+
+  return handle;
+}
+
+void HAL_FreeDigitalPWM(HAL_DigitalPWMHandle pwmGenerator, int32_t* status) {
+  auto port = digitalPWMHandles->Get(pwmGenerator);
+  digitalPWMHandles->Free(pwmGenerator);
+  if (port == nullptr) return;
+  int32_t id = *port;
+  SimDigitalPWMData[id].initialized = false;
+}
+
+void HAL_SetDigitalPWMRate(double rate, int32_t* status) {
+  // Currently rounding in the log rate domain... heavy weight toward picking a
+  // higher freq.
+  // TODO: Round in the linear rate domain.
+  // uint8_t pwmPeriodPower = static_cast<uint8_t>(
+  //    std::log(1.0 / (kExpectedLoopTiming * 0.25E-6 * rate)) /
+  //        std::log(2.0) +
+  //    0.5);
+  // TODO(THAD) : Add a case to set this in the simulator
+  // digitalSystem->writePWMPeriodPower(pwmPeriodPower, status);
+}
+
+void HAL_SetDigitalPWMDutyCycle(HAL_DigitalPWMHandle pwmGenerator,
+                                double dutyCycle, int32_t* status) {
+  auto port = digitalPWMHandles->Get(pwmGenerator);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  int32_t id = *port;
+  if (dutyCycle > 1.0) dutyCycle = 1.0;
+  if (dutyCycle < 0.0) dutyCycle = 0.0;
+  SimDigitalPWMData[id].dutyCycle = dutyCycle;
+}
+
+void HAL_SetDigitalPWMOutputChannel(HAL_DigitalPWMHandle pwmGenerator,
+                                    int32_t channel, int32_t* status) {
+  auto port = digitalPWMHandles->Get(pwmGenerator);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  int32_t id = *port;
+  SimDigitalPWMData[id].pin = channel;
+}
+
+void HAL_SetDIO(HAL_DigitalHandle dioPortHandle, HAL_Bool value,
+                int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (value != 0 && value != 1) {
+    if (value != 0) value = 1;
+  }
+  SimDIOData[port->channel].value = value;
+}
+
+void HAL_SetDIODirection(HAL_DigitalHandle dioPortHandle, HAL_Bool input,
+                         int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+
+  SimDIOData[port->channel].isInput = input;
+}
+
+HAL_Bool HAL_GetDIO(HAL_DigitalHandle dioPortHandle, int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return false;
+  }
+  HAL_Bool value = SimDIOData[port->channel].value;
+  if (value > 1) value = 1;
+  if (value < 0) value = 0;
+  return value;
+}
+
+HAL_Bool HAL_GetDIODirection(HAL_DigitalHandle dioPortHandle, int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return false;
+  }
+  HAL_Bool value = SimDIOData[port->channel].isInput;
+  if (value > 1) value = 1;
+  if (value < 0) value = 0;
+  return value;
+}
+
+void HAL_Pulse(HAL_DigitalHandle dioPortHandle, double pulseLength,
+               int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  // TODO (Thad) Add this
+}
+
+HAL_Bool HAL_IsPulsing(HAL_DigitalHandle dioPortHandle, int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return false;
+  }
+  return false;
+  // TODO (Thad) Add this
+}
+
+HAL_Bool HAL_IsAnyPulsing(int32_t* status) {
+  return false;  // TODO(Thad) Figure this out
+}
+
+void HAL_SetFilterSelect(HAL_DigitalHandle dioPortHandle, int32_t filterIndex,
+                         int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+
+  // TODO(Thad) Figure this out
+}
+
+int32_t HAL_GetFilterSelect(HAL_DigitalHandle dioPortHandle, int32_t* status) {
+  auto port = digitalChannelHandles->Get(dioPortHandle, HAL_HandleEnum::DIO);
+  if (port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return 0;
+  }
+  return 0;
+  // TODO(Thad) Figure this out
+}
+
+void HAL_SetFilterPeriod(int32_t filterIndex, int64_t value, int32_t* status) {
+  // TODO(Thad) figure this out
+}
+
+int64_t HAL_GetFilterPeriod(int32_t filterIndex, int32_t* status) {
+  return 0;  // TODO(Thad) figure this out
+}
+}  // extern "C"