sci.h

可以对北京汽车所产生的故障进行诊断的电脑解码器

/******************************************************************************************
 *  目的：串口驱动
 *  功能：提供基本的串口操作接口
 *  模块依赖：MCS51 串口 硬件端口 及 操作方式
 ******************************************************************************************/
//串口中断宏定义
#define SCIIN  100
#define SCIOUT 101
#define TLOW   0
#define THIGH  1
typedef void (*pFnSCON)( ) ;  //定义串口回调函数类型

/*
**-------------------------------------------------------------------------------------
** 初始化串口中断处理模块 SCI
**-------------------------------------------------------------------------------------
*/
void Init_SCI();
/*
**-------------------------------------------------------------------------------------
** 读取读总线状态
**-------------------------------------------------------------------------------------
*/
char SCIRXD();
/*
**-------------------------------------------------------------------------------------
** 送发送总线状态
** stat: 状态值 (TLOW~THIGH)
**-------------------------------------------------------------------------------------
*/
void SCITXD(unsigned char stat);
/*
**-------------------------------------------------------------------------------------
** 返回串口发送中断标志
**-------------------------------------------------------------------------------------
*/
char SCISE();
/*
**-------------------------------------------------------------------------------------
** 返回串口读中断标志
**-------------------------------------------------------------------------------------
*/
char SCIRE();
/*
**-------------------------------------------------------------------------------------
** 中断标志允许控制
** signal: 0表示不允许读取中断 1表示允许
**-------------------------------------------------------------------------------------
*/
void SCIENcontrol(unsigned char signal);
/*
**-------------------------------------------------------------------------------------
** 查询方式向发送数据 byter
** 外部条件：当前串口中断不允许
**-------------------------------------------------------------------------------------
*/
void SCIsend(unsigned char byter);
/*
**-------------------------------------------------------------------------------------
** 查询方式读取当前已接收数据
** 外部条件：当前串口中断不允许
**-------------------------------------------------------------------------------------
*/
unsigned char SCIread();
/*
**-------------------------------------------------------------------------------------
** 内部中断中发送函数byter
**-------------------------------------------------------------------------------------
*/
void SCIsendin(unsigned char byter);
/*
**-------------------------------------------------------------------------------------
** 内部中断读取函数
**-------------------------------------------------------------------------------------
*/
unsigned char SCIreadin();
/*
**-------------------------------------------------------------------------------------
** 初始化串口,波特率flash,工作模式1,定时器2做波特率发生器
**-------------------------------------------------------------------------------------
*/
char SCIini(unsigned int flash);
/*
**-------------------------------------------------------------------------------------
** 动态波特率设定函数
**-------------------------------------------------------------------------------------
*/
char  SCIDynamicBuad();
/*
**-------------------------------------------------------------------------------------
** 装入串口协议
**-------------------------------------------------------------------------------------
*/
char SCIload(pFnSCON pfnc);
/*
**-------------------------------------------------------------------------------------
** 销毁串口协议
**-------------------------------------------------------------------------------------
*/
char SCIdestroy();
/*
**-------------------------------------------------------------------------------------
** 释放串口
**-------------------------------------------------------------------------------------
*/
void SCIRelease();

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