testuart.c

实时操作系统Vxworks下RS232测试程序。需要在Vxworks开发平台Tornado下编译。与硬件结合可能比较紧密

#include <Time.h>
#include "taskLib.h"
#include "locale.h"
#include "string.h"
#include "stdlib.h"
#include "Vxworks.h"
#include "configAll.h"
#include "dosFsLib.h"
#include "sioLib.h"


/*UART mode set*/
#define SIO_STOPBIT_SET   0x1020
#define SIO_CHARLGH_SET   0x1021
#define SIO_PTYODD_SET    0x1024
#define SIO_PTYEVE_SET    0x1025

typedef unsigned char BYTE;

int comfd;

/*
 * 函数名:  int ComPortInit(int portid,int baudrate,int stopBitLength,int dataLength,int odd_even_none)     
 * 函数描述: 初始化PowerPC 8270 板的串口,并设置其波特率,停止位,数据长度以及是否奇偶校验   
 * 调用:      
 * 			m8270_sccuart_drv(),m8270_sccuart_create() ,open(),ioctl();logmsg()用于打印显示,可以去掉.
 * 被调用:      
 * 访问记录: 
 * 修改记录:  
 * 输入:   
 * 			int portid:  需要初始化的串口编号,从1 到4 取值
 *			int baudrate:  需要设置的波特率,参数为0 时不设置波特率(默认为115200)
 *			int stopBitLength:  停止位的长度,可为1 和2.参数为0时不设置停止位(默认为1位)
 *			int dataLength:  数据位的长度,可为6,7,8.  参数为0时不设置数据位长度(默认为8位)
 *			int odd_even_none:   是否奇偶校验,1 为奇校验,2 为偶校验    .参数为0时不设置奇偶校验(默认为无校验)
 * 输出:     无
 * 返回:         
 *    		正确初始化时返回串口操作的句柄,失败时返回-1.	
 * 其它:         
 */
int ComPortInit(int portid,int baudrate,int stopBitLength,int dataLength,int odd_even_none)
{
	int sccfd;
	int errorflag;
	unsigned char str[10];
		
	if(portid<1||portid>4)
	{
		logMsg("Com%d is not existed\n",portid,0,0,0,0,0);
		return(ERROR);
	}

	if(baudrate!=300&&baudrate!=600&&baudrate!=1200&&
		baudrate!=2400&&baudrate!=4800&&baudrate!=9600&&
		baudrate!=19200&&baudrate!=38400&&baudrate!=43000&&
		baudrate!=56000&&baudrate!=57600&&baudrate!=115200&&baudrate!=0)
	{
		logMsg("invalid baudrate\n",0,0,0,0,0,0);
		return(ERROR);
	}

	if(stopBitLength!=1&&stopBitLength!=2&&stopBitLength!=0)
	{
		logMsg("invalid stopbit length\n",0,0,0,0,0,0);
		return(ERROR);
	}
	
	if(dataLength!=6&&dataLength!=7&&dataLength!=8&&dataLength!=0)
	{
		logMsg("invalid data length\n",0,0,0,0,0,0);
		return(ERROR);
	}
	
	if(odd_even_none!=1&&odd_even_none!=2&&odd_even_none!=0)
	{
		logMsg("invalid odd even or none verify\n",0,0,0,0,0,0);
		return(ERROR);
	}
	
	m8270_sccuart_drv(portid);
	errorflag=m8270_sccuart_create(portid) ;
	
	if(errorflag== 0)
	{
		logMsg("Com%d init OK\n",portid,0,0,0,0,0);
		
		sprintf(str,"\sccuart%d",portid);
		sccfd=open(str,0,0);
		if(sccfd<0)
		{
			logMsg("com%d open	failed\n",portid,0,0,0,0,0);
			return(ERROR);
		}
		else
		{
			logMsg("com%d open	OK\n",portid,0,0,0,0,0);
			
			if(baudrate!=0)
			{
				ioctl(sccfd,SIO_BAUD_SET,baudrate);
			}
			
			if(stopBitLength!=0)
			{
				ioctl(sccfd,SIO_STOPBIT_SET,stopBitLength);
			}

			if(dataLength!=0)
			{
				ioctl(sccfd,SIO_CHARLGH_SET,dataLength);
			}

			switch(odd_even_none)
			{
				case 1:
					ioctl(sccfd,SIO_PTYODD_SET,0);
					break;
				case 2:
					ioctl(sccfd,SIO_PTYEVE_SET,0);
					break;
				default:
					break;
			}
			
			return(sccfd);
		}
	}
	else
	{
		logMsg("Com%d init failed\n",portid,0,0,0,0,0);
		return(ERROR);
	}	


}

int ComWrite(int comid)
{
	unsigned char sendbuf[20];
	unsigned char sendlen=20;
	unsigned char tempi;
	
	logMsg("in ComWrite()\n",0,0,0,0,0,0);

	for(tempi=0;tempi<20;tempi++)sendbuf[tempi]=65+tempi;
	sendbuf[19]='\0';
	
	while(1)
	{
		if((write(comid,sendbuf,sendlen))==ERROR) 
		{
			logMsg("com write EEROR\n",0,0,0,0,0,0);
		}
		else
		{
			logMsg("com write %s OK\n",sendbuf,0,0,0,0,0);
		}
		taskDelay(60);
	}
}

int ComRead(int comid)
{
	unsigned char readbuf[50];
	unsigned char readlen=0;
	unsigned char tempi;
	unsigned char buf[10];
	
	fd_set rfds;

	logMsg("in ComRead()\n",0,0,0,0,0,0);

	/*for(tempi=0;tempi<20;tempi++)readbuf[tempi]=0x32;
	readbuf[19]='\0';*/
	
	while(1)
	{
		FD_ZERO(&rfds);
		
		FD_SET(comid,&rfds);
		
		if(select(comid+1,&rfds,NULL,NULL,NULL)< 0 )
		{
			logMsg("select error,quit Writing\n",0,0,0,0,0,0);
		}
		
		if( FD_ISSET(comid,&rfds))
		{
			if(read(comid,buf,1)==ERROR) 
			{
				logMsg("com read EEROR\n",0,0,0,0,0,0);
			}
			else
			{
				readbuf[readlen]=buf[0];
				readlen++;
				if(buf[0]=='o')
				{
					readbuf[readlen]='\0';
					logMsg("com read %s OK\n",readbuf,0,0,0,0,0);
					readlen=0;
				}
			}
		}		
	}
}


int testUart()
{
	logMsg("testUart\n");
	comfd=ComPortInit(4,38400,1, 8, 2);
	if(comfd<0)
	{
		logMsg("init comport error\n",0,0,0,0,0);
	}
	else
	{
		taskSpawn ("COMSend", 100, 0, 4096, (FUNCPTR)ComWrite,comfd, 0, 0, 0, 0, 0, 0, 0, 0, 0);
		taskSpawn ("COMRecv", 100, 0, 4096, (FUNCPTR) ComRead,comfd, 0, 0, 0, 0, 0, 0, 0, 0, 0);
	}
}