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