picosecond 

 补充关于L32K上仿真C程序的疑问的C 程序
void main(void)
{ unsigned char temp;

    
   tmod=0x20;               //初始化，串口，定时器工作方式设定
 th1=250;
 tl1=250;
 tr1=1;
 pcon=0x80;
 scon=0x50; 
    ea=0;  
 p0=0xff;
        while(1)
        { while(ri==0);
               ri=0;
           temp=sbuf;
             
            switch(temp)
             { 
                case'a':
                  p00=1;
                   break;
              /* case'b':
                  p01=1;
                    break;
               case'c':
                  p02=1;
                    break;
               case'd':
                  p03=1;
                  break;
               case'e':
                  p04=1;
                  break;
               case'f':
                  p05=1;
                  break;
               case'g':
                  p06=1;
                  break; 
               case'h':   
                  p07=1;
                  break;
               case'i':
                  p10=1;
                  break; 
               case'j':
                  p11=1;
                  break;
               case'k':
                  p12=1;
                  break;
               case'l':
                  p13=1;
                  break;
               case'm':
                  p14=1;
                  break;
               case'n':
                  p15=1;
                  break;
               case'o':
                  p16=1;
                  break;
               case'p':
                  p17=1;
                  break;
               case'q':
                  p20=1;
                  break;
               case'r':
                  p21=1;
                  break;
               case's':
                  p22=1;
                  break;
               case't':
                  p23=1;
                  break;
               case'u':
                  p24=1;
                  break;  
               case'v':
                  p25=1;
                  break;
               case'w':
                  p26=1;
                  break;
               case'x':
                  p27=1;
                  break; */

               case'a':
                  p00=0;
                   break;
              /* case'b':
                  p01=0;
                    break;
               case'c':
                  p02=0;
                    break;
               case'd':
                  p03=0;
                  break;
               case'e':
                  p04=0;
                  break;
               case'f':
                  p05=0;
                  break;
               case'g':
                  p06=0;
                  break; 
               case'h':   
                  p07=0;
                  break;
               case'i':
                  p10=0;
                  break; 
               case'j':
                  p11=0;
                  break;
               case'k':
                  p12=0;
                  break;
               case'l':
                  p13=0;
                  break;
               case'm':
                  p14=0;
                  break;
               case'n':
                  p15=0;
                  break;
               case'o':
                  p16=0;
                  break;
               case'p':
                  p17=0;
                  break;
               case'q':
                  p20=0;
                  break;
               case'r':
                  p21=0;
                  break;
               case's':
                  p22=0;
                  break;
               case't':
                  p23=0;
                  break;
               case'u':
                  p24=0;
                  break;  
               case'v':
                  p25=0;
                  break;
               case'w':
                  p26=0;
                  break;
               case'x':
                  p27=0;
                  break; */
             }        
     }
 }     


发表时间:2006年3月10日10:35:08