30 lines
584 B
C
30 lines
584 B
C
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-10-24 thread-liu first version
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*/
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#ifndef __DRV_RS485_H__
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#define __DRV_RS485_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RS485_SEND_MODE 0
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#define RS485_RECV_MODE 1
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extern rt_device_t rs485_serial;
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extern struct rt_semaphore rs485_rx_sem;
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extern int rs485_send_data(char *tbuf, rt_uint16_t t_len);
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extern int rs485_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* drv_rs485.h */
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