105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/****************************************************************************
|
|
* drivers/wireless/bluetooth/bt_uart.h
|
|
* UART based Bluetooth driver
|
|
*
|
|
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Ported from the Intel/Zephyr arduino101_firmware_source-v1.tar package
|
|
* where the code was released with a compatible 3-clause BSD license:
|
|
*
|
|
* Copyright (c) 2016, Intel Corporation
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the copyright holder nor the names of its
|
|
* contributors may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdbool.h>
|
|
#include <nuttx/wqueue.h>
|
|
#include <nuttx/wireless/bluetooth/bt_driver.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#define H4_HEADER_SIZE 1
|
|
|
|
#define H4_CMD 0x01
|
|
#define H4_ACL 0x02
|
|
#define H4_SCO 0x03
|
|
#define H4_EVT 0x04
|
|
|
|
#ifdef CONFIG_BLUETOOTH_UART_DUMP
|
|
# define BT_DUMP(m,b,l) lib_dumpbuffer(m,b,l)
|
|
#else
|
|
# define BT_DUMP(m,b,l)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
/* This type defines the state data generic UART upper half driver */
|
|
|
|
struct btuart_lowerhalf_s; /* Forward reference */
|
|
|
|
struct btuart_upperhalf_s
|
|
{
|
|
/* This structure must appear first in the structure so that this structure
|
|
* is cast compatible with struct bt_driver_s.
|
|
*/
|
|
|
|
struct bt_driver_s dev;
|
|
|
|
/* The cached lower half interface */
|
|
|
|
FAR const struct btuart_lowerhalf_s *lower;
|
|
|
|
/* Work queue support */
|
|
|
|
struct work_s work;
|
|
volatile bool busy;
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/* Generic implementations of HCI UART methods */
|
|
|
|
struct bt_buf_s; /* Forward reference */
|
|
|
|
int btuart_send(FAR const struct bt_driver_s *dev, FAR struct bt_buf_s *buf);
|
|
int btuart_open(FAR const struct bt_driver_s *dev);
|