kbscan.c

51开发板调试程序

#include<reg52.h>
#include <intrins.h>
#include "Define.h"
#include "Set.h"

////////KBScan////////
UCHARIDATA  ucdKBScanResult;
//UCHARIDATA  ucdKBScanResult;        /* ??????? */
UCHARIDATA  ucdKBScan_Acc;          /* ????????? */
UCHARIDATA  ucdReceiver;            /* P0???????? */
UCHARIDATA  ucdIncrease;            /* ?? */ 

UCHARIDATA   i;
UCHARIDATA   j;
UCHARIDATA   k;

UCHARIDATA  uccRemove[3]={0x03,0x05,0x06};


//unsigned char code   uccRemove[3]={0x03,0x05,0x06};
///////////////////////////////////////////////////////////////

void   KBScan(void)
{
    ucdKBScan_Acc = uccRemove[ucdIncrease];
	ucdIncrease = ucdIncrease + 1;

    if(ucdIncrease >= 3)
	{
	    ucdIncrease = 0;
	}

	ucdKBScan_Acc = ucdKBScan_Acc|0x38;

    P0 = P0&0xc0;
	P0 = P0|ucdKBScan_Acc;

	for(i = 0; i < 100; i++)
	    for(j = 0; j < 80; j++)
	        ucdReceiver = P0;

        ucdReceiver = ucdReceiver&0x3f;

	 if(ucdReceiver == 0x36)
	     ucdKBScanResult = 0;
	 else if(ucdReceiver == 0x2e)
	     ucdKBScanResult = 1;
	 else if(ucdReceiver == 0x1e)
	     ucdKBScanResult = 2;
	 else if(ucdReceiver == 0x35)
	     ucdKBScanResult = 3;
	 else if(ucdReceiver == 0x2d)
	     ucdKBScanResult = 4;
	 else if(ucdReceiver == 0x1d)
	     ucdKBScanResult = 5;
	 else if(ucdReceiver == 0x33)
	     ucdKBScanResult = 6;
	 else if(ucdReceiver == 0x2b)
	     ucdKBScanResult = 7 ;
	 else if(ucdReceiver == 0x1b)
	     ucdKBScanResult = 8;
	 else
	     ucdKBScanResult = 30;

	 //return  ucdKBScanResult;
	 
}

/*
void    main()
{
        
    TMOD=0x11;
    EA=1;
	IP=2;
    ET1=1;
    TR1=1;
	ET0=1;
    TR0=1;

    P2 = TAB[ucdKBScanResult];

    while(1)
    {
	    KBScan();

		if(9 != ucdKBScanResult)
		{
	        P2 = TAB[ucdKBScanResult];                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
		}
 	    
    }
}*/