test_tpdraw.c

arm9 嵌入式系统开发与实践光盘

#include "def.h"
#include "2410addr.h"
#include "config.h"
#include "board.h"
#include "utils.h"
#include "LCD_LTS350Q1_PE1.h"

extern void Lcd_Tft_LTS350Q1_PE1_Init(void);
extern void Touch_Screen_Init(void);
extern int CheckTouchPanelEvent(U16 *x, U16 *y, U32 *tm);

void LcdBkLtSet(U32 HiRatio)
{
#define FREQ_PWM1		1000

	if(!HiRatio)
	{
		rGPBCON  = rGPBCON & (~(3<<2)) | (1<<2) ;	//GPB1设置为output
		rGPBDAT &= ~(1<<1);
		return;
	}
	rGPBCON = rGPBCON & (~(3<<2)) | (2<<2) ;		//GPB1设置为TOUT1
	
	if( HiRatio > 100 )
		HiRatio = 100 ;	
	
	rTCON = rTCON & (~(0xf<<8)) ;			// clear manual update bit, stop Timer1

	rTCFG0 	&= 0xffffff00;					// set Timer 0&1 prescaler 0

	rTCFG1 	&= 0xffffff0f;					// set Timer 1 MUX 1/16
	rTCFG1  |= 0x00000030;					// set Timer 1 MUX 1/16

	rTCNTB1	 = ( GetMasterClock()>>4 )/FREQ_PWM1;		//if set inverter off, when TCNT2<=TCMP2, TOUT is high, TCNT2>TCMP2, TOUT is low
	rTCMPB1  = ( rTCNTB1*(100-HiRatio))/100 ;	//if set inverter on,  when TCNT2<=TCMP2, TOUT is low,  TCNT2>TCMP2, TOUT is high

	rTCON = rTCON & (~(0xf<<8)) | (0x0e<<8) ;
	//自动重装,输出取反关闭,更新TCNTBn、TCMPBn,死区控制器关闭
	rTCON = rTCON & (~(0xf<<8)) | (0x0d<<8) ;		//开启背光控制
}

int TPDrawPixel(U32 a1, U32 a2, U32 a3, U32 a4)
{
	U16 lcd_x, lcd_y;
	LcdBkLtSet(70);					//背光控制
	Lcd_Tft_LTS350Q1_PE1_Init();	//LCD初始化
	Glib_ClearScr(0xf81f);			//LCD清屏
	Touch_Screen_Init();			//触摸屏初始化
	printf( "\nWait for hit the touch panel! Press Enter to clear screen, ESC to Exit!\n" );

    while( 1 )
    {
    	if(SerialRxReady())
    	{
    		U8 c = getkey();
    		if(c==ESC_KEY)
    			break;
    		if(c==ENTER_KEY)
    			Glib_ClearScr(0xf81f);
    	}
		if(CheckTouchPanelEvent(&lcd_x, &lcd_y, NULL)>0)	//触摸屏触发函数
		{
			/*下面的代码主要是实现将从触摸屏上获得的点在LCD上显示出来*/
			PutPixel((lcd_x+0), (lcd_y+0), 0);
			PutPixel((lcd_x+0), (lcd_y+1), 0);
			PutPixel((lcd_x+1), (lcd_y+0), 0);
			PutPixel((lcd_x+1), (lcd_y+1), 0);
		}
		
	}
	
	return 0;
}