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/CAN.cpp b/hal/src/main/native/sim/CAN.cpp
new file mode 100644
index 0000000..1e7af73
--- /dev/null
+++ b/hal/src/main/native/sim/CAN.cpp
@@ -0,0 +1,63 @@
+/*----------------------------------------------------------------------------*/
+/* 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/CAN.h"
+
+#include "mockdata/CanDataInternal.h"
+
+using namespace hal;
+
+namespace hal {
+namespace init {
+void InitializeCAN() {}
+}  // namespace init
+}  // namespace hal
+
+extern "C" {
+
+void HAL_CAN_SendMessage(uint32_t messageID, const uint8_t* data,
+                         uint8_t dataSize, int32_t periodMs, int32_t* status) {
+  SimCanData->sendMessage(messageID, data, dataSize, periodMs, status);
+}
+void HAL_CAN_ReceiveMessage(uint32_t* messageID, uint32_t messageIDMask,
+                            uint8_t* data, uint8_t* dataSize,
+                            uint32_t* timeStamp, int32_t* status) {
+  // Use a data size of 42 as call check. Difficult to add check to invoke
+  // handler
+  *dataSize = 42;
+  auto tmpStatus = *status;
+  SimCanData->receiveMessage(messageID, messageIDMask, data, dataSize,
+                             timeStamp, status);
+  // If no handler invoked, return message not found
+  if (*dataSize == 42 && *status == tmpStatus) {
+    *status = HAL_ERR_CANSessionMux_MessageNotFound;
+  }
+}
+void HAL_CAN_OpenStreamSession(uint32_t* sessionHandle, uint32_t messageID,
+                               uint32_t messageIDMask, uint32_t maxMessages,
+                               int32_t* status) {
+  SimCanData->openStreamSession(sessionHandle, messageID, messageIDMask,
+                                maxMessages, status);
+}
+void HAL_CAN_CloseStreamSession(uint32_t sessionHandle) {
+  SimCanData->closeStreamSession(sessionHandle);
+}
+void HAL_CAN_ReadStreamSession(uint32_t sessionHandle,
+                               struct HAL_CANStreamMessage* messages,
+                               uint32_t messagesToRead, uint32_t* messagesRead,
+                               int32_t* status) {
+  SimCanData->readStreamSession(sessionHandle, messages, messagesToRead,
+                                messagesRead, status);
+}
+void HAL_CAN_GetCANStatus(float* percentBusUtilization, uint32_t* busOffCount,
+                          uint32_t* txFullCount, uint32_t* receiveErrorCount,
+                          uint32_t* transmitErrorCount, int32_t* status) {
+  SimCanData->getCANStatus(percentBusUtilization, busOffCount, txFullCount,
+                           receiveErrorCount, transmitErrorCount, status);
+}
+
+}  // extern "C"