diff --git a/hal/include/HAL/SPI.h b/hal/include/HAL/SPI.h
new file mode 100644
index 0000000..d29d9f3
--- /dev/null
+++ b/hal/include/HAL/SPI.h
@@ -0,0 +1,50 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016-2017. 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 <stdint.h>
+
+#include "HAL/Types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void HAL_InitializeSPI(int32_t port, int32_t* status);
+int32_t HAL_TransactionSPI(int32_t port, uint8_t* dataToSend,
+                           uint8_t* dataReceived, int32_t size);
+int32_t HAL_WriteSPI(int32_t port, uint8_t* dataToSend, int32_t sendSize);
+int32_t HAL_ReadSPI(int32_t port, uint8_t* buffer, int32_t count);
+void HAL_CloseSPI(int32_t port);
+void HAL_SetSPISpeed(int32_t port, int32_t speed);
+void HAL_SetSPIOpts(int32_t port, HAL_Bool msbFirst, HAL_Bool sampleOnTrailing,
+                    HAL_Bool clkIdleHigh);
+void HAL_SetSPIChipSelectActiveHigh(int32_t port, int32_t* status);
+void HAL_SetSPIChipSelectActiveLow(int32_t port, int32_t* status);
+int32_t HAL_GetSPIHandle(int32_t port);
+void HAL_SetSPIHandle(int32_t port, int32_t handle);
+
+void HAL_InitSPIAccumulator(int32_t port, int32_t period, int32_t cmd,
+                            int32_t xferSize, int32_t validMask,
+                            int32_t validValue, int32_t dataShift,
+                            int32_t dataSize, HAL_Bool isSigned,
+                            HAL_Bool bigEndian, int32_t* status);
+void HAL_FreeSPIAccumulator(int32_t port, int32_t* status);
+void HAL_ResetSPIAccumulator(int32_t port, int32_t* status);
+void HAL_SetSPIAccumulatorCenter(int32_t port, int32_t center, int32_t* status);
+void HAL_SetSPIAccumulatorDeadband(int32_t port, int32_t deadband,
+                                   int32_t* status);
+int32_t HAL_GetSPIAccumulatorLastValue(int32_t port, int32_t* status);
+int64_t HAL_GetSPIAccumulatorValue(int32_t port, int32_t* status);
+int64_t HAL_GetSPIAccumulatorCount(int32_t port, int32_t* status);
+double HAL_GetSPIAccumulatorAverage(int32_t port, int32_t* status);
+void HAL_GetSPIAccumulatorOutput(int32_t port, int64_t* value, int64_t* count,
+                                 int32_t* status);
+#ifdef __cplusplus
+}
+#endif