请教ZLG7290双边沿触发的奇怪问题

回shuiyan前辈，这个上面的代码不是我写的啊，是微软自带的键盘IST，我只是移植到BSP下编译，这样可以增加打印信息。



这样写没有问题吧。





(*pKeybdIst->pfnKeybdEvent)是BSP下的代码转换过来的。

这里有



KEYBD_IST keybdIst;

	keybdIst.hevInterrupt = m_hevInterrupt;

	keybdIst.dwSysIntr_Keybd = dwSysIntr_Keybd;

	keybdIst.uiPddId = v_uiPddId;

	keybdIst.pfnGetKeybdEvent = KeybdPdd_GetEventEx2;

	keybdIst.pfnKeybdEvent = v_pfnKeybdEvent;

		

	KeybdIstLoop(&keybdIst);



KeybdPdd_GetEventEx2是扫面键盘的函数，里面调用了7290驱动，我也纳闷啊，代码没有改，在4.2BSP行，在5.0就不行了。



//主要的扫描码处理函数

static UINT KeybdPdd_GetEventEx2(UINT uiPddId, UINT32 rguiScanCode[16], BOOL rgfKeyUp[16])

{

    SETFNAME(_T("KeybdPdd_GetEventEx2"));



    UINT32   scInProgress = 0;

    static UINT32   scPrevious;



    BOOL            fKeyUp;

    UINT8           ui8ScanCode=0;

    UINT            cEvents = 0;

//	int				i;



	unsigned char   key[4];



    //DEBUGCHK(rguiScanCode != NULL);

    //DEBUGCHK(rgfKeyUp != NULL);



	//for(i=0;i<4;i++)

	//	key[i] = 0;

	//getsFromKBCTL(&ui8ScanCode, 1);

	ZLG7290_GetKey(key);

	

//	RETAILMSG(1, (_T("zlg7290 get keys: %x %x %x %x \r\n"),key[0],key[1],key[2],key[3]));

//	OEMWriteDebugString((TEXT("zlg7290 get keys!!!!\r\n")));

	

//	RETAILMSG(1, (_T("v_pIICregs->rIICCON : %x\r\n"),v_pIICregs->rIICCON));

//	RETAILMSG(1, (_T("v_pIOPregs->rGPECON : %x\r\n"),v_pIOPregs->rGPECON));



	if(key[0]&0x01) //key down

	{		

		fKeyUp = FALSE;

		// enable rising int trigger

		//v_pIOPregs->rEXTINT1 &= ~(0x7 << 12);   // Clear EINT11

    	//v_pIOPregs->rEXTINT1 |= (0x2 << 8);     	// fallig edge triggered for EINT11

		//v_pIOPregs->rEXTINT1 |= (0x6 << 12);		// both edge

		//v_pIOPregs->rEXTINT1 |= (0x1 << 14);	// enable rising int trigger

	}

	else//key up

	{		

		fKeyUp = TRUE;

		// enable falling int trigger

		//v_pIOPregs->rEXTINT1 &= ~(0x7 << 12);   // Low level  triggered

    	//v_pIOPregs->rEXTINT1 |= (0x2 << 8);     	// fallig edge triggered for EINT11

		//v_pIOPregs->rEXTINT1 |= (0x6 << 12);		// both edge

		//v_pIOPregs->rEXTINT1 |= (0x1 << 13);	//  enable falling int trigger

	}



/*	if( (key[3] & 0x01) == 0)//F1

	{

		ui8ScanCode = 0x01;			

	}

	else if( (key[3] & 0x02) == 0)//F2

	{

		ui8ScanCode	= 0x02;		

	}

	else if( (key[3] & 0x04) == 0)//F3

	{

		ui8ScanCode	= 0x03;	

	}

	else if( (key[3] & 0x08) == 0)//F4

	{

		ui8ScanCode = 0x04;			

	}

	else */

	if(key[1] != 0x0)//other KEYS

	{			

		ui8ScanCode = key[1];	

	}

	else

	{

		ui8ScanCode = 0;

	}

	//sent bl key press event to backlight driver

	/*if(ui8ScanCode == 19) //bl key scancode = 19

	{

		//only get key down

		if(fKeyUp == FALSE)

			SetEvent(evtBLKeyPress);

		return cEvents;

	}*/ //wsf 20080924

	//v_pIOPregs->rGPFCON |= 0x01;//GPF0 OUTPUT



   // if (fKeyUp==FALSE)                        

   //      v_pIOPregs->rGPFDAT &= ~(1 << 1); /* LED 0 On                 */

   // else

   //     v_pIOPregs->rGPFDAT |=  (1 << 1); /* LED 0 Off                */

	

//    DEBUGMSG(ZONE_SCANCODES, 

//        (_T("%s: scan code 0x%08x, code in progress 0x%08x, previous 0x%08x\r\n"),

 //       pszFname, ui8ScanCode, scInProgress, scPrevious));



	scInProgress = ui8ScanCode;

	//按键有效，而且键值相同，auto-repeat

    //if ( (scInProgress == scPrevious) && (fKeyUp == FALSE) )

	//{

        //	mdd handles auto-repeat so ignore auto-repeats from keybd

    //} 

	//else 

	//{

        // Not a repeated key.  This is the real thing.		

		scPrevious = scInProgress;

				                		      		                

        rguiScanCode[cEvents] = scInProgress;

		rgfKeyUp[cEvents] = fKeyUp;

        ++cEvents;

    //}

	//send a user input event to backlight driver!

	SetEvent(evtUserInput);



    return cEvents;

}

    #if 0

        cEvents = (*pKeybdIst->pfnGetKeybdEvent)(pKeybdIst->uiPddId, rguiScanCode, rgfKeyUp);

            

        for (UINT iEvent = 0; iEvent < cEvents; ++iEvent) {

            (*pKeybdIst->pfnKeybdEvent)(pKeybdIst->uiPddId,rguiScanCode[iEvent], rgfKeyUp[iEvent]);

        }

        // cEvents could be 0 if this was a partial scan code, like 0xE0

     #endif