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diff --git a/include/peripheralmanager/uart_device.h b/include/peripheralmanager/uart_device.h
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+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SYSTEM_PERIPHERALMANAGER_UART_DEVICE_H_
+#define SYSTEM_PERIPHERALMANAGER_UART_DEVICE_H_
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+/// @defgroup Uart Uart device interface
+/// @brief Functions to control an UART device.
+///
+/// These functions can be used to control an UART device.
+/// @{
+
+typedef struct BUartDevice BUartDevice;
+
+/// Writes to a UART device.
+/// @param device Pointer to the BUartDevice struct.
+/// @param data Data to write.
+/// @param len Size of the data to write.
+/// @param bytes_written Output pointer to the number of bytes written.
+/// @return 0 on success, errno on error.
+int BUartDevice_write(const BUartDevice* device,
+                      const void* data,
+                      uint32_t len,
+                      uint32_t* bytes_written);
+
+/// Reads from a UART device.
+/// @param device Pointer to the BUartDevice struct.
+/// @param data Buffer to read the data into.
+/// @param len Number of bytes to read.
+/// @param bytes_read Output pointer to the number of bytes read.
+/// @return 0 on success, errno on error.
+int BUartDevice_read(const BUartDevice* device,
+                     void* data,
+                     uint32_t len,
+                     uint32_t* bytes_read);
+
+/// Sets the input and output speed of a UART device.
+/// @param device Pointer to the BUartDevice struct.
+/// @param device Uart device to configure.
+/// @param baudrate Speed in baud.
+/// @return 0 on success, errno on error.
+int BUartDevice_setBaudrate(const BUartDevice* device, uint32_t baudrate);
+
+/// Destroys a BUartDevice struct.
+/// @param device Pointer to the BUartDevice struct.
+void BUartDevice_delete(BUartDevice* device);
+
+/// @}
+
+__END_DECLS
+
+#endif  // SYSTEM_PERIPHERALMANAGER_UART_DEVICE_H_