TIMER0在MODE2的计数工作方式程序

           call       again
           call       delay
           jmp        trans2
trans2:    MOV         r0,#09            ;设定呼叫站号
           MOV         r1,#15
           call       again
           call       delay
           jmp        trans3
trans3:    MOV         r0,#24            ;设定交谈模式
           MOV         r1,#05
           call       again
           call       delay
           jmp        scan0
again:     MOV         a,r0              ;至table1取码
           MOV         dptr,#table1
           MOV c       a,@a+dptr
           MOV         sbuf,a            ;发送给tnc
           cpl        a
           MOV         p2,a              ;输出至p2显示
wait:      jbc        ti,ok             ;发送完毕否?是则跳至ok并清除ti
           jmp        wait
ok:        inc        r0                ;取下一个码
           djnz       r1,again     
           ret
delay:     MOV         r5,#200
d1:        MOV         r6,#248
           djnz       r6,$  
           djnz       r5,d1
           ret
table:     db         30h,31h,32h,33h    ;0,1,2,3    
           db         34h,35h,36h,37h    ;4,5,6,7
           db         38h,39h,41h,42h    ;8,9,a,b
           db         43h,44h,45h,0dh    ;c,d,e,entet
table1:    db         4dh,59h,20h,42h    ;mybu2FP
           db         56h,32h,46h,50h,0dh
           db         4dh,59h,43h,41h,4ch,4ch    ;mycall bu2fp-1(enter)
           db         20h,42h,56h,32h,46h,50h
           db         2dh,31h,0dh
           db         43h,4fh,4eh,56h,0dh        ;conv(enter)
           end
          

上一页  [1] [2] 

本文关键字：程序  51单片机，单片机-工控设备 - 51单片机