led_portd.c

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/*********************************************
 example program for PIC download develop board
 16F877A @3.6864MHz
 test portd 8led
 www.mcufan.com
*********************************************/
#include <pic.h>
#include	<pic1687x.h>
//定义花样数据
const unsigned char design[32]={0xFF,0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F,
0x7F,0xBF,0xDF,0xEF,0xF7,0xFB,0xFD,0xFE,0xFF,
0xFF,0xFE,0xFC,0xF8,0xF0,0xE0,0xC0,0x80,0x0,
0xE7,0xDB,0xBD,0x7E,0xFF};
__CONFIG(WDTDIS & HS & LVPDIS & DEBUGDIS);
main()
{
	
	unsigned int a; //定义循环用的变量
	unsigned char b; 
	TRISD=0x00;			/*TRISD寄存器被赋值，PORTD每一位都为输出*/
	
	while(1)
	{
				for (b=0; b<32; b++)
				{
					for(a=0; a<30000; a++); //延时一段时间
					PORTD=design[b]; 		//读已定义的花样数据并写花样数据到RD口
				}
	
	}

}