如何用C语言写一个循环彩灯的程序，采用定时器方式1工作。

unsigned char lights = 0 //lights到各位分别表示P1.0～P1.7

int i=0

while (1)

{

//①L1、L2、…L8依次点亮

lights = 0x01

for (i=0i<7i++)

{

delay(500)

lights = lights <<1

}

delay(500)

//②L1、L2、…L8依次熄灭

lights = 0xfe

for (i=0i<7i++)

{

delay(500)

lights = (lights <<1) + 0x01

}

delay(500)

//③L1、L2、…L8全亮

lights = 0xff

delay(500)

//全灭

lights = 0x00

delay(500)

}

ORG 0000H

AJMP MAIN

MAIN:

MOV P1,#05H

CALL DELAY

MOV P1,#0AH

CALL DELAY

MOV P1,#50H

CALL DELAY

MOV P1,#55H

CALL DELAY

MOV P1,#0AAH

CALL DELAY

MOV P1,#0FFH

CALL DELAY

MOV P1,#00H

CALL DELAY

AJMP MAIN

DELAY:

MOV R3,#1000

BC: MOV R2,#995

DEC R2

DJNZ R2,$

DJNZ R3,BC

RET

END

说明：该程序采用P1口作为发光二极管的控制，阳极接P1口，阴极接地即可

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