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72 lines
2.5 KiB
72 lines
2.5 KiB
4 months ago
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/******************************************************************************
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*
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* Copyright 2009-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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// This module manages the serial port over which HCI commands
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// and data are sent/received.
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#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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typedef enum {
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USERIAL_PORT_1,
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USERIAL_PORT_2,
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USERIAL_PORT_3,
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USERIAL_PORT_4,
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USERIAL_PORT_5,
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USERIAL_PORT_6,
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USERIAL_PORT_7,
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USERIAL_PORT_8,
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USERIAL_PORT_9,
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USERIAL_PORT_10,
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USERIAL_PORT_11,
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USERIAL_PORT_12,
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USERIAL_PORT_13,
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USERIAL_PORT_14,
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USERIAL_PORT_15,
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USERIAL_PORT_16,
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USERIAL_PORT_17,
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USERIAL_PORT_18,
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} userial_port_t;
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// Initializes the userial module. This function should only be called once.
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// It returns true if the module was initialized, false if there was an error.
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bool userial_init(void);
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// Opens the given serial port. Returns true if successful, false otherwise.
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// Once this function is called, the userial module will begin producing
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// buffers from data read off the serial port. If you wish to pause the
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// production of buffers, call |userial_pause_reading|. You can then resume
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// by calling |userial_resume_reading|. This function returns true if the
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// serial port was successfully opened and buffer production has started. It
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// returns false if there was an error.
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bool userial_open(userial_port_t port);
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void userial_close(void);
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void userial_close_reader(void);
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// Reads a maximum of |len| bytes from the serial port into |p_buffer|.
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// This function returns the number of bytes actually read, which may be
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// less than |len|. This function will not block.
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uint16_t userial_read(uint16_t msg_id, uint8_t* p_buffer, uint16_t len);
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// Writes a maximum of |len| bytes from |p_data| to the serial port.
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// This function returns the number of bytes actually written, which may be
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// less than |len|. This function may block.
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uint16_t userial_write(uint16_t msg_id, const uint8_t* p_data, uint16_t len);
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