mirror of
https://github.com/stargieg/bacnet-stack
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71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2011 Steve Karg <skarg@users.sourceforge.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Module Description:
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* Handle the configuration and operation of the RS485 bus.
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**************************************************************************/
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#ifndef RS485_H
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#define RS485_H
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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void rs485_init(
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void);
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void rs485_rts_enable(
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bool enable);
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bool rs485_byte_available(
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uint8_t * data_register);
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bool rs485_receive_error(
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void);
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void rs485_bytes_send(
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uint8_t * buffer, /* data to send */
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uint16_t nbytes); /* number of bytes of data */
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uint32_t rs485_baud_rate(
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void);
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bool rs485_baud_rate_set(
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uint32_t baud);
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/* a granular approach */
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void rs485_byte_send(
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uint8_t data_register);
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bool rs485_byte_sent(
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void);
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bool rs485_frame_sent(
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void);
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bool rs485_turnaround_elapsed(
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void);
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void rs485_silence_reset(
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void);
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bool rs485_silence_elapsed(
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uint32_t interval);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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