931.asm

来自「单片机开发资料光盘-双龙-686M.zip」· 汇编 代码 · 共 17 行

.include "8535def.inc"
.org $000
 rjmp main
main:   ldi r16,low(ramend) ;栈指针置初值
        out spl,r16
        ldi r16,high(ramend)
        out spH,r16
        ldi r16,$07         ;上升沿计数
        out tccr0,r16
        ldi r16,0           ;T/C0置初值0
        out tcnt0,r16
        ldi r16,$ff         ;PC口作输出
        out ddrc,r16
loop:   in r16,tcnt0
        out portc,r16
        rjmp loop