验位*/
switch(nEvent)
{
case 'O'://奇数
newtio.c_cflag |= PARENB;
newtio.c_cflag |=PARODD;
newtio.c_iflag |= (INPCK | ISTRIP);
break；
case 'E'://偶数
newtio.c_iflag |= (INPCK | ISTRIP);
newtio.c_cflag |= PARENB;
newtio.c_cflag &= ~PARODD;
case 'N'://无奇偶校验位
newtio.c_cflag &= ~PARENB;
break;
}
/*设置波特率*/
switch(nSpeed)
{
case 2400:
cfsetispeed(&newtio,B2400);
cfsetospeed(&newtio,B2400);
break;
case 4800:
cfsetispeed(&newtio,B4800);
cfsetospeed(&newtio,B4800);
break;
case 9600:
cfsetispeed(&newtio,B9600);
cfsetospeed(&newtio,B9600);
break;
case 115200:
cfsetispeed(&newtio,B115200);
cfsetospeed(&newtio,B115200);
break;
case 460800:
cfsetispeed(&newtio,B460800);
cfsetospeed(&newtio,B460800);
break;
default:
cfsetispeed(&newtio,B9600);
cfsetospeed(&newtio,B9600);
break;
}
/*设置停止位*/
if(nStop==1)
newtio.c_cflag &= ~CSTOPB;
else if(nStop==2)
newtio.c_cflag |= CSTOPB;
/*设置等待时间和最小接收字符*/
newtio.c_cc[VTIME] =0;
newtio.c_cc[VMIN]=0;
/*处理未接受字符*/
tcflush(fd, TCIFLUSH)；
/*激活新配置*/
if((tcsetattr(fd,TCSANOW,&newtio))!=0)
{
perror(“com set error”);
return -1;
}
printf("set done!\n");
return 0;
}
|