tchscr.c

三星arm的资料与源码

#include "..\inc\44b.h"
#include "..\inc\LCD320.h"
#include "..\inc\tchScr.h"
#include "..\inc\flash.h"
#include "..\inc\file.h"

#define ADS7843_CMD_X	(ADS7843_CTRL_START|ADS7843_GET_X|ADS7843_CTRL_12MODE|ADS7843_CTRL_DFR|ADS7843_CTRL_ENPWD)
#define ADS7843_CMD_Y	(ADS7843_CTRL_START|ADS7843_GET_Y|ADS7843_CTRL_12MODE|ADS7843_CTRL_DFR|ADS7843_CTRL_ENPWD)
#define ABS(a)		((a)>=0?(a):(-(a)))

int TchScr_Xmax=1840,TchScr_Xmin=176,
	TchScr_Ymax=195,TchScr_Ymin=1910;

U8 sysCONFIG[]={'C','O','N','F','I','G',' ', ' ','S','Y','S'};
U32 tx_tmpbuf[16*1024/4];

void LoadAxisMax()
{
	U32 root_location;
	root_location=find_file(sysCONFIG);
	
	//get the file first cluster//
	current_block=root_buf[root_location][27]*256+root_buf[root_location][26];
	
	if(root_location==FILE_NO_FOUND){
		Uart_Printf("\nConFig.sys no found!");
		LCD_printf("ConFig.sys no found!\n");
		return;
	}
	else
	{
		Uart_Printf("\nLoading ConFig.sys...");
		LCD_printf("Loading ConFig.sys...\n");
		read_file((U8*)tx_tmpbuf);

		TchScr_Xmax=tx_tmpbuf[0];
		TchScr_Xmin=tx_tmpbuf[1];
		TchScr_Ymax=tx_tmpbuf[2];
		TchScr_Ymin=tx_tmpbuf[3];
		if(TchScr_Xmax==TchScr_Xmin || TchScr_Ymax==TchScr_Ymin){
			TchScr_Xmax=1840;
			TchScr_Xmin=176;
			TchScr_Ymax=195;
			TchScr_Ymin=1910;
			Uart_Printf("\nerror ConFig.sys data!");
			LCD_printf("error ConFig.sys data!\n");
			return;
		}
		Uart_Printf("\nLoad ConFig.sys OK!\n");
		LCD_printf("Load ConFig.sys OK!\n");
	}
}

void TchScr_init()
{
	/*7				6		5					4				3		2			1:0			*/
	/*Internal clock,MSB mode,Transmit/Receive mode,falling edge clock,No action,Non hand-shaking mode,SIO interrupt mode*/
	/*0				0			1				0				0			0		01*/
	rSIOCON=0x21;//0x31;
	rSBRDR=15;//15;//band rate = 60MHz/2/(15+1)=1.875MHz
	rIVTCNT=7;//7;//Intervals=60MHz/4/(7+1)=1.875MHz

	LoadAxisMax();
}

void TchScr_GetScrXY(int *x, int *y, U8 bCal)
{
	unsigned int temp;

	rPDATC&=~ADS7843_PIN_CS;

	SendSIOData(ADS7843_CMD_X);
	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_X);
	temp<<=8;
	temp|=ReadSIOData();
	*x=(temp>>4);

	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_X);
	temp<<=8;
	temp|=ReadSIOData();
	*x+=(temp>>4);

	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_X);
	temp<<=8;
	temp|=ReadSIOData();
	*x+=(temp>>4);

	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_Y);
	temp<<=8;
	temp|=ReadSIOData();
	*x+=(temp>>4);
	*x>>=2;		//x=x/4;
	
	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_Y);
	temp<<=8;
	temp|=ReadSIOData();
	*y=(temp>>4);

	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_Y);
	temp<<=8;
	temp|=ReadSIOData();
	*y+=(temp>>4);
	
	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(ADS7843_CMD_Y);
	temp<<=8;
	temp|=ReadSIOData();
	*y+=(temp>>4);

	SendSIOData(0);
	temp=ReadSIOData();
	SendSIOData(0);
	temp<<=8;
	temp|=ReadSIOData();
	*y+=(temp>>4);
	*y>>=2;		//y=y/4;

	rPDATC|=ADS7843_PIN_CS;

	if(bCal){
		*x=(*x-TchScr_Xmin)*LCDWIDTH/(TchScr_Xmax-TchScr_Xmin);
		*y=(*y-TchScr_Ymin)*LCDHEIGHT/(TchScr_Ymax-TchScr_Ymin);
	}
}

void WaitForScrDown(int *x, int *y)
{
	for(;;){
		if(!(rPDATC&ADS7843_PIN_PEN)){//按下
			Delay(50);
			if(!(rPDATC&ADS7843_PIN_PEN)){//按下
				TchScr_GetScrXY(x, y,FALSE);
				while(!(rPDATC&ADS7843_PIN_PEN))
					Delay(100);
				return;
			}
		}
	}
}


void SetTouchScr()
{
	int x,y;
	U32 root_location;
	
	Uart_Printf("\n");
	Uart_Printf("please touch the any point.\n");
	WaitForScrDown(&x,&y);
	Uart_Printf("x=%d,y=%d.\n",x,y);

	Uart_Printf("please touch the topleft point.\n");
	WaitForScrDown(&TchScr_Xmin,&TchScr_Ymin);
	Uart_Printf("x=%d,y=%d.\n",TchScr_Xmin,TchScr_Ymin);

	Uart_Printf("please touch the bottomright point.\n");
	WaitForScrDown(&TchScr_Xmax,&TchScr_Ymax);
	Uart_Printf("x=%d,y=%d.\n",TchScr_Xmax,TchScr_Ymax);

	Uart_Printf("Is set Touch Screen OK? y/n.\n");
	if(Uart_Getch()!='y'){
		Uart_Printf("Cancel Set Touch Screen.\n");
		return;
	}
	//设置触摸屏最值

	root_location=find_file(sysCONFIG);
	
	//get the file first cluster//
	current_block=root_buf[root_location][27]*256+root_buf[root_location][26];
	
	if(root_location==FILE_NO_FOUND){
		Uart_Printf("\nConFig.sys no found!");
		LCD_printf("ConFig.sys no found!\n");
		return;
	}
	else
	{
		int i;
		for(i=0;i<16*1024/4;i++)
			tx_tmpbuf[i]=0xffffffff;
		
		tx_tmpbuf[0]=TchScr_Xmax;
		tx_tmpbuf[1]=TchScr_Xmin;
		tx_tmpbuf[2]=TchScr_Ymax;
		tx_tmpbuf[3]=TchScr_Ymin;
		Erase_Cluster(current_block);
		write_file(TRUE, (U8*)tx_tmpbuf);
		Uart_Printf("\nConFig.sys save OK!\n");
	}
	
}

U32 TchScr_GetOSXY(int *x, int *y)
{
	static U32 mode=0;
	static int oldx,oldy;
	int i;
	for(;;){
		if(mode!=TCHSCR_ACTION_DOWN && mode!=TCHSCR_ACTION_MOVE){
			if(!(rPDATC&ADS7843_PIN_PEN)){
				TchScr_GetScrXY(x, y,TRUE);
				for(i=0;i<20;i++){
					if(rPDATC&ADS7843_PIN_PEN)
						break;
					Delay(100);
				}
				if(i<20){	//在规定的双击时间之内抬起，检测是不是及时按下
					for(i=0;i<20;i++){
						if(!(rPDATC&ADS7843_PIN_PEN)){
							mode=TCHSCR_ACTION_DBCLICK;
							break;
						}
						Delay(100);
					}
					if(i==20)		//没有在规定的时间内按下
						mode=TCHSCR_ACTION_CLICK;
				}
				else{	//没有在规定的时间内抬起
					mode=TCHSCR_ACTION_DOWN;
				}
				break;
			}
		}
		else{
			if(rPDATC&ADS7843_PIN_PEN){	//抬起
				mode=TCHSCR_ACTION_UP;
				*x=oldx;
				*y=oldy;
				return mode;
			}
			else{
				TchScr_GetScrXY(x, y,TRUE);
				if(ABS(oldx-*x)>4 ||ABS( oldy-*y)>4){
					mode=TCHSCR_ACTION_MOVE;
					break;
				}
			}
		}
		Delay(50);
	}
	oldx=*x;
	oldy=*y;
	return mode;
}