/**********************************************************************
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* Copyright: (C)2023 LingYun IoT System Studio
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* Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292
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* Description: ISKBoard RS232/TTL/RS485 Hardware Abstract Layer driver
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*
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* ChangeLog:
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* Version Date Author Description
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* V1.0.0 2023.04.3 GuoWenxue Release initial version
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***********************************************************************/
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#ifndef INC_COMPORT_H_
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#define INC_COMPORT_H_
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/* Library includes. */
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#include "stm32l4xx_hal.h"
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/* Demo application includes. */
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#include <stdio.h>
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#include "usart.h"
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#include "ringbuf.h"
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#define COMM_RXBUFSIZE 1024
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typedef struct comport_s
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{
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int fd; /* compatible with Linux API */
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char devname[32]; /* UART device name */
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UART_HandleTypeDef *huart; /* STM32 UART Handler */
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uint8_t *rxch; /* receive data in interrupt handler */
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ring_buffer_t rb; /* receive data ring buffer */
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} comport_t;
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comport_t *comport_init(UART_HandleTypeDef *huart, uint8_t *rxch, uint8_t *rxbuf, size_t size);
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comport_t *comport_open(UART_HandleTypeDef *huart);
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void comport_flush(comport_t *comport);
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extern int comport_send(comport_t *comport, char *data, int bytes);
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extern int comport_recv(comport_t *comport, char *buf, int size, uint32_t timeout);
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extern void comport_term(comport_t *comport);
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extern comport_t *rs485_open(UART_HandleTypeDef *huart);
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extern int rs485_send(comport_t *comport, char *data, int bytes);
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extern int rs485_recv(comport_t *comport, char *buf, int size, uint32_t timeout);
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extern void rs485_term(comport_t *comport);
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#endif /* INC_WIRED_H_ */
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