PIC16F877A例程–LED

#include //调用头文件

#include

__CONFIG(0x3F32); //芯片装备字

typedef unsigned char uchar;

typedef unsigned int uint;

void delay(uint z);

void main (void)

{

uchar temp;

TRISA=0XC0; //RA0-RA5设为输出驱动六个LED

for(;;)

for(temp=0xfe;temp!=0x80;temp<<=1)

{

PORTA=temp;

delay(1000);

}

}

void delay(uint z )

{

uint x,y;

for(x=z;x–;x>0)

for(y=40;y–;y>0);

}