『第
3 楼』:
例程如下:
#include
#include
#include
void main(){
unsigned comport=0;
unsigned status;
status=_bios_serialcom(_COM_INIT, comport, _COM_CHR8|_COM_STOP1|_COM_NOPARITY|_COM_2400);
cout<<(status&0x100);
cout<<"input type:";
char keychar;
unsigned char sif=0xa0,sis=0xa1,a,b,c;
cout<<sif<<sis;
do{
keychar =getch();
if (keychar==113)
return;
switch(keychar){
case 121:
_bios_serialcom(_COM_SEND, comport, sis);
case 49:
a=1;b=1;c=0;break;
case 50:
a=2;b=1;c=5;break;
case 51:
a=3;b=2;c=0;break;
case 52:
a=4;b=3;c=0;break;
case 53:
a=5;b=5;c=5;break;
default: ;
}
_bios_serialcom(_COM_SEND, comport, sif);
_bios_serialcom(_COM_SEND, comport, a); cout<<a;
_bios_serialcom(_COM_SEND, comport, b); cout<<b;
_bios_serialcom(_COM_SEND, comport, c); cout<<c; cout<<endl;
} while(1);
}
用turbo c++3.0 编译r
可是com设备收不到信号,是不是还需要驱动什么的,
主要想了解一下dos系统下怎样实现简单的com串口数据的收发.帮帮忙吧
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