[hal] Initial SystemCore empty HAL (#7454)

hal/src/main/native/systemcore/I2C.cpp

@@ -0,0 +1,54 @@
+// 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/I2C.h"
+
+#include <fcntl.h>
+#include <linux/i2c-dev.h>
+#include <linux/i2c.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#include <cstring>
+
+#include <wpi/print.h>
+
+#include "HALInitializer.h"
+#include "HALInternal.h"
+#include "hal/DIO.h"
+#include "hal/HAL.h"
+
+using namespace hal;
+
+namespace hal::init {
+void InitializeI2C() {}
+}  // namespace hal::init
+
+extern "C" {
+
+void HAL_InitializeI2C(HAL_I2CPort port, int32_t* status) {
+  hal::init::CheckInit();
+  *status = HAL_HANDLE_ERROR;
+  return;
+}
+
+int32_t HAL_TransactionI2C(HAL_I2CPort port, int32_t deviceAddress,
+                           const uint8_t* dataToSend, int32_t sendSize,
+                           uint8_t* dataReceived, int32_t receiveSize) {
+  return -1;
+}
+
+int32_t HAL_WriteI2C(HAL_I2CPort port, int32_t deviceAddress,
+                     const uint8_t* dataToSend, int32_t sendSize) {
+  return -1;
+}
+
+int32_t HAL_ReadI2C(HAL_I2CPort port, int32_t deviceAddress, uint8_t* buffer,
+                    int32_t count) {
+  return -1;
+}
+
+void HAL_CloseI2C(HAL_I2CPort port) {}
+
+}  // extern "C"