/*********************************************************
** 功能描述: 按鍵記數程序，對S1的按鍵次數，以二進制顯示在16個LED上 **
*********************************************************/
#include "p30f6014.h"
int failmemory[40];

int main()
{
	INTCON1=0x0000;	
	INTCON2=0x0000;			      //關閉所有中斷 	
    unsigned int led = 0x0000;
	unsigned long int i = 0; 
	while(1)
	{	
        TRISD = TRISD&0xffff; //將RD8-RD15配置為輸入,D0~D7		
		TRISD = 0xfff8;	      //RD0-RD2配置為輸出,作138譯碼
        PORTD = PORTD&0xfff8; //選中KEYA
        if ((PORTD&0xff00)==0xfe00)   //查詢S1是否按下
		{
			for (i=0;i<10;i++){}        //延時消抖
			if ((PORTD&0xff00)==0xfe00)
				 led = led+1;
            while ((PORTD&0xff00)==0xfe00)
			{
				for (i=0;i<10;i++){}
			}			
		}
		PORTD = (PORTD&0xfff8)|0x0002;	//選中LEDA
		TRISD = TRISD&0x00ff; //將RD8-RD15配置為輸出,D0~D7
        PORTD = (PORTD&0x00ff)|((~(led<<8))&0xff00);
        PORTD = (PORTD&0xfff8)|0x0003;	//選中LEDB	
        PORTD = (PORTD&0x00ff)|((~led)&0xff00);
        PORTD = (PORTD&0xfff8)|0x0007;
	}
	return 0;
}