欧美极品高清xxxxhd,国产日产欧美最新,无码AV国产东京热AV无码,国产精品人与动性XXX,国产传媒亚洲综合一区二区,四库影院永久国产精品,毛片免费免费高清视频,福利所导航夜趣136

標(biāo)題: 串口通信 [打印本頁(yè)]

作者: 12233344421 時(shí)間: 2018-11-21 20:32
標(biāo)題: 串口通信
#include <REG52.H>

sbit LED = P1^0;
unsigned char UART_buff;
bit New_rec = 0, Send_ed = 1, Money = 0;
//----------------------------------------------
void main (void)
{
SCON = 0x50; //串口方式1, 8-n-1, 允許接收.
TMOD = 0x20; //T1方式2
TH1 = 0xFD; //9600bps@11.0592MHz
TL1 = 0xFD;
TR1 = 1;
ES  = 1;    //開(kāi)中斷.
EA  = 1;

while(Money == 0); //等著交費(fèi)，呵呵，等著接收$.

while(1)  {
   if ((New_rec == 1) && (Send_ed == 1))  {  //如果收到新數(shù)據(jù)及發(fā)送完畢
      SBUF = UART_buff; //那就發(fā)送.
      New_rec = 0;
      Send_ed = 0;
} }
}
//----------------------------------------------
void ser_int (void) interrupt 4
{
if(RI == 1) {  //如果收到.
   RI = 0;    //清除標(biāo)志.
   New_rec = 1;
   UART_buff = SBUF;  //接收.
   if(UART_buff == '1')  LED = 1;
   if(UART_buff == '0')  LED = 0;
   if(UART_buff == '$')  Money = 1;
}
else  {       //如果送畢.
   TI = 0;    //清除標(biāo)志.
   Send_ed = 1;
}
}

歡迎光臨 (http://m.raoushi.com/bbs/)