Four buttons control the LED displacement-EEWORLD

Code:

#include

#define uchar unsigned char

#define uint unsigned int

void DelayMS(uint x)

{

flying i;

while(x--)

{

for(i=200;i>0;i--);

}

void Move_LED()

{

if((P1 &= 0x10)==0) P0 = _cror_(P0,1);

else if((P1 &= 0x20)==0) P0 = _crol_(P0,1);

else if((P1 &= 0x40)==0) P2 = _cror_(P2,1);

else if((P1 &= 0x80)==0) P2 = _crol_(P2,1);

}

void main()

{

uchar Recent_Key=0xff;

P0=0xfe;

P1=0xfe;

P2=0xfe;

while(1)

{

if(Recent_Key != P1)

{

Recent_Key=P1;

Move_LED();

DelayMS(10);

}

Hardware Connection:

insert image description here

Reference address：Four buttons control the LED displacement

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Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.

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