82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/***********************************************************************
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* @file jlinux_uart.h
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JLINUX_UART
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* @brief header file
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* @history
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* Date Version Author description
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* ========== ======= ========= =======================================
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* 2022-07-27 V1.0 Lucky,lukai@jovision.com Create
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*
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* @Copyright (C) 2022 Jovision Technology Co., Ltd.
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***********************************************************************/
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#ifndef __JLINUX_UART_H__
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#define __JLINUX_UART_H__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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typedef struct _uart_ctx *juart_hdl_t;
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typedef struct
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{
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int baudrate; //波特率:1200/2400/4800/9600/19200/38400/57600/115200/230400/380400/460800/921600
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int datawidth; //数据位宽度:5/6/7/8
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int stopbit; //停止位宽度:1/2
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int parity; //奇偶校验:0无校验，1奇校验，2偶校验
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}JUartAttr_t;
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/**
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*@brief 打开串口设备设备，如果是485设备请配合jctrl_rs485相关接口使用
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*@param name 设备名称，如：/dev/ttyS0
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*@return 句柄
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*/
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juart_hdl_t juart_open(const char *name);
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/**
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*@brief 关闭串口
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*@param handle 句柄
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*/
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int juart_close(juart_hdl_t handle);
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/**
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*@brief 配置串口属性
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*@param handle 句柄
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*@param attr 属性
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*/
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int juart_set_attr(juart_hdl_t handle, JUartAttr_t *attr);
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int juart_get_fd(juart_hdl_t uart);
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/**
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*@brief 通过串口发送数据
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*@param handle 句柄
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*@param data 数据buffer
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*@param len 数据长度
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*@return 0成功
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*/
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int juart_send(juart_hdl_t handle, char *data, int len);
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/**
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*@brief 通过串口接受数据
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*@param handle 句柄
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*@param data 数据buffer
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*@param len buffer的长度
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*@param timeout 超时毫秒
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*@return 收到数据的长度
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*/
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int juart_recv(juart_hdl_t handle, char *data, int len, int timeout);
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/**
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*@brief 设置rs485模式
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*@param handle 句柄
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*@param mode 0:发送后立刻置为接收状态；非0：发送后保持发送状态
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*@return 0 成功
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*/
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int juart_set_rs485(juart_hdl_t handle, int mode);
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#ifdef __cplusplus
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}
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#endif
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#endif // __JLINUX_UART_H__
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