touch.c

我个人编写的车载dvd上的程序

#include "public.h"
//#include "touch.h"
//#include "dsa.h"

unsigned char CountTouchPanelTimer10ms;
TouchDriver_Handle *gTouchDriver_Handle = 0;

#ifdef TOUCH_PANEL_DRIVER_TSC2003

void write_tsc2003(unsigned char iDeviceAddr, unsigned char command )
{
    int loop;
    
    for (loop=0; loop<tsc2003_wr_loop_max; loop++)
    {
        I2CStart();
        if(0==I2COut8Bit(iDeviceAddr)) 
        {
            if(0==I2COut8Bit(command))
            {              
                I2CStop();
                break;
            }
        }       
        init_I2C();
    }
}

int read_tsc2003(unsigned char iDeviceAddr)
{
	int  data=0;
	int  loop;
    
	for (loop=0; loop<tsc2003_wr_loop_max; loop++)
	{
		//i2c_start_sig();
		I2CStart();
        
		if(0 == I2COut8Bit(iDeviceAddr)) 
		{
			data = I2CIn16Bit();//i2c_2bytes_r();/*use 12bit mode*///i2c_byte_r(1); ....................?????????
			//i2c_stop_sig(); 
            I2CStop();
			break;
		 }
        
		init_I2C();
	}  
    data = ((data>>4)&0x0fff);
	//data = data>>4;
    
	return data;
}

unsigned char is_touched(void)
{  	
	unsigned char penirq_flag;
    
    write_tsc2003( TSC2003_write, 0xb0 );//TSC2007 reset pd0,pd1,is  nessary!!!

    //need set gpio.

    penirq_flag = PINin_TOUCH_DET;//GPIO_I_GET(PENIRQ_STATUS_GPIO);

	if(penirq_flag == 0)
	{
		return 1;
		debug("Touch");
	}
	else
	{
	      debug("no touch");
		return 0;
	}
	
}

int  get_x_coordinate(void)
{  
	int X=0;
    
    write_tsc2003( TSC2003_write,command_x );
    X= read_tsc2003(TSC2003_read);
    
    return X;
}

int  get_y_coordinate(void)
{  
	int Y=0;
    
	write_tsc2003( TSC2003_write,command_y );
	Y= read_tsc2003(TSC2003_read);
    
    return Y;

}

void TouchPanelMain(void)
{
    if(CountTouchPanelTimer10ms == 0)
    {
        polling_tsc2003_100ms();
        CountTouchPanelTimer10ms = 10;
    }

}

void polling_tsc2003_100ms(void)
{
	
	int x_change_range;
	int y_change_range;
		
	if(is_touched() == 1)
	{
		gTouchDriver_Handle->counter_flag ++;
		
		gTouchDriver_Handle->temp_x= get_x_coordinate();
		gTouchDriver_Handle->temp_y= get_y_coordinate();

		if(gTouchDriver_Handle->counter_flag > touch_times)
		{
			if(gTouchDriver_Handle->Touch_x_now < gTouchDriver_Handle->temp_x)
				x_change_range = gTouchDriver_Handle->temp_x - gTouchDriver_Handle->Touch_x_now;
			else
				x_change_range = gTouchDriver_Handle->Touch_x_now - gTouchDriver_Handle->temp_x;
			
			if(gTouchDriver_Handle->Touch_y_now < gTouchDriver_Handle->temp_y)
				y_change_range = gTouchDriver_Handle->temp_y - gTouchDriver_Handle->Touch_y_now;
			else
				y_change_range = gTouchDriver_Handle->Touch_y_now - gTouchDriver_Handle->temp_y;

			gTouchDriver_Handle->event_id = LONG_PRESS;
			
			if((x_change_range>x_keep_range)||(y_change_range>y_keep_range))
			{
				gTouchDriver_Handle->Touch_x_now= gTouchDriver_Handle->temp_x;
				gTouchDriver_Handle->Touch_y_now= gTouchDriver_Handle->temp_y;	
			}
			
			if(gTouchDriver_Handle->counter_flag==255)
				gTouchDriver_Handle->counter_flag = touch_times ;

			//Give the x/y/event id to upper layer here for long time press
			/*
			gTouchAction.gCoordinate.horizontal = gTouchDriver_Handle->Touch_x_now;
			gTouchAction.gCoordinate.vertical = gTouchDriver_Handle->Touch_y_now;
			gTouchAction.EVENT_ID = LONG_PRESS;
			*/
		}
		else if(gTouchDriver_Handle->counter_flag <= touch_times)
	 	{
			gTouchDriver_Handle->Touch_x_now = gTouchDriver_Handle->temp_x;
			gTouchDriver_Handle->Touch_y_now = gTouchDriver_Handle->temp_y;	
			gTouchDriver_Handle->event_id = SHORT_PRESS;
		}
        
		//printf("Touch_x_now,Touch_y_now are %d,%d\n", gTouchDriver_Handle->Touch_x_now,gTouchDriver_Handle->Touch_y_now);
	}
	else
	{
		if((gTouchDriver_Handle->event_id == SHORT_PRESS)||(gTouchDriver_Handle->event_id == LONG_PRESS))
		{
			//Give the x/y/event id to upper layer here for long time press
			//Remeber here the value of event_id which for upper layer must be SHORT_PRESS
			/*
			gTouchAction.gCoordinate.horizontal = gTouchDriver_Handle->Touch_x_now;
			gTouchAction.gCoordinate.vertical = gTouchDriver_Handle->Touch_y_now;
			gTouchAction.EVENT_ID = SHORT_PRESS;
			*/
            //dsa_send_data(SEND_TOUCH_PRESS_FLAG,gTouchDriver_Handle->event_id);
            //dsa_send_data(SEND_TOUCH_PANEL_X,(BYTE)gTouchDriver_Handle->Touch_x_now);
            //dsa_send_data(SEND_TOUCH_PANEL_Y,(BYTE)gTouchDriver_Handle->Touch_y_now);
            
            ADDSendCommandToBuff(SEND_TOUCH_PRESS_FLAG,gTouchDriver_Handle->event_id);
            ADDSendCommandToBuff(SEND_TOUCH_PANEL_X,(unsigned char)gTouchDriver_Handle->Touch_x_now);
            ADDSendCommandToBuff(SEND_TOUCH_PANEL_Y,(unsigned char)gTouchDriver_Handle->Touch_y_now);  
            debug_val("TOUCH X",gTouchDriver_Handle->Touch_x_now);
            debug_val("TOUCH Y",gTouchDriver_Handle->Touch_y_now);
        //    SCI_SendPromter("X", &gTouchDriver_Handle->Touch_x_now,1);
         //   SCI_SendPromter("Y", &gTouchDriver_Handle->Touch_y_now,1);
		}

		gTouchDriver_Handle->event_id = NO_TOUCH;
		gTouchDriver_Handle->Touch_x_now= 0;
		gTouchDriver_Handle->Touch_y_now= 0;
		gTouchDriver_Handle->temp_x = 0;
		gTouchDriver_Handle->temp_y = 0;
		gTouchDriver_Handle->counter_flag = 0;
        
		//printf("There is no touch in the four-line-touch-screen!\n");
	}
}

void TouchPanelInit(void)
{

    PD_TOUCH_DET = 0;     
    PCR1_TOUCH_DET = 1;
    PCR2_TOUCH_DET = 1;
    
    //PD_DSADATA = 1;
}

void TouchPanelTimer10ms(void)
{
    if(CountTouchPanelTimer10ms > 0)
        CountTouchPanelTimer10ms --;
}

#endif