h6.asm

来自「单片机程序集合」· 汇编 代码 · 共 18 行

Speaker equ P1.0


Loop:   
       clr   Speaker
       call  Delay      
       setb  Speaker
       call  Delay
       ljmp  Loop

Delay:
       mov   r0, #50
       djnz  r0, $
       ret

       end