汇编语言实现东西红灯南北红灯
时间: 2023-11-28 08:43:16 浏览: 70
用汇编语言实现的交通灯控制
以下是汇编语言实现东西红灯南北红灯的代码:
```assembly
; 定义常量
RED equ 0
GREEN equ 1
YELLOW equ 2
; 定义端口地址
PORTA equ 0x00
PORTB equ 0x01
DDRA equ 0x02
DDRB equ 0x03
; 定义延时函数
delay:
push r0
push r1
push r2
ldi r0, 0xFF
delay1:
ldi r1, 0xFF
delay2:
ldi r2, 0xFF
delay3:
dec r2
brne delay3
dec r1
brne delay2
dec r0
brne delay1
pop r2
pop r1
pop r0
ret
; 定义主程序
main:
; 初始化端口
ldi r16, 0xFF
out DDRA, r16
out DDRB, r16
; 循环64次
ldi r17, 64
loop1:
; 东西向红灯亮
ldi r16, 0b00000001
out PORTA, r16
ldi r16, 0b00000000
out PORTB, r16
call delay
; 东西向绿灯亮
ldi r16, 0b00000010
out PORTA, r16
call delay
; 东西向黄灯亮
ldi r16, 0b00000100
out PORTA, r16
call delay
; 东西向红灯亮
ldi r16, 0b00000001
out PORTA, r16
ldi r16, 0b00000000
out PORTB, r16
call delay
; 南北向绿灯亮
ldi r16, 0b00000001
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 南北向黄灯亮
ldi r16, 0b00000100
out PORTB, r16
call delay
; 南北向红灯亮
ldi r16, 0b00000010
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 南北向红灯亮
ldi r16, 0b00000010
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 东西向黄灯亮
ldi r16, 0b00000100
out PORTA, r16
call delay
; 东西向绿灯亮
ldi r16, 0b00000010
out PORTA, r16
call delay
; 东西向红灯亮
ldi r16, 0b00000001
out PORTA, r16
ldi r16, 0b00000000
out PORTB, r16
call delay
; 南北向黄灯亮
ldi r16, 0b00000100
out PORTB, r16
call delay
; 南北向红灯亮
ldi r16, 0b00000010
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 南北向红灯亮
ldi r16, 0b00000010
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 东西向黄灯亮
ldi r16, 0b00000100
out PORTA, r16
call delay
; 东西向红灯亮
ldi r16, 0b00000001
out PORTA, r16
ldi r16, 0b00000000
out PORTB, r16
call delay
; 南北向绿灯亮
ldi r16, 0b00000001
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 南北向黄灯亮
ldi r16, 0b00000100
out PORTB, r16
call delay
; 南北向红灯亮
ldi r16, 0b00000010
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 南北向红灯亮
ldi r16, 0b00000010
out PORTB, r16
ldi r16, 0b00000000
out PORTA, r16
call delay
; 东西向黄灯亮
ldi r16, 0b00000100
out PORTA, r16
call delay
; 循环计数器减1
dec r17
brne loop1
; 程序结束
ret
```
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