touch_impt.c

MSP430z_f247.rar

# include "Touch_IMPT.h"
# include "ADC12.h"
# include "USE_12864_Driver.h"
# include "UART0.h"

void Touch_IMPT_PORT_INIT(void)
{
	P4DIR |= BIT1| BIT2;
}
void Touch_IMPT_Device_INIT(void)
{
	Touch_IMPT_PORT_INIT();
}
unsigned int Get_X_AD(void)
{
	USE_X_PORT;
	RELEASE_Y_PORT;
	
	RELEASE_X_AD;
	
	return Get_ADC12_SS(Y_INCH);
}

unsigned int Get_Y_AD(void)
{
	USE_Y_PORT;
	RELEASE_X_PORT;
	
	RELEASE_Y_AD;
	
	return Get_ADC12_SS(X_INCH);
}

/**************************************************
x,y 坐标映射(未按下触摸屏时返回为0)
pos[0]:返回x坐标
pos[1]:返回y坐标
**************************************************/
void Map_Touch_xy(unsigned char* p_xy)
{
	unsigned long x_AD_Value = Get_X_AD();
	unsigned long y_AD_Value	= Get_Y_AD();
	
  	if(x_AD_Value > TOUCH_X_MIN)
	{
	  	p_xy[0] =(x_AD_Value - TOUCH_X_MIN)*128/(TOUCH_X_MAX - TOUCH_X_MIN);
	}
	if(p_xy[0]>128)
	{
		p_xy[0] = 128;
	}
	
	if(y_AD_Value > TOUCH_Y_MIN)
	{
	  	p_xy[1] =(y_AD_Value - TOUCH_Y_MIN)*64/(TOUCH_Y_MAX - TOUCH_Y_MIN);
	}
	if(p_xy[1]>64)
	{
		p_xy[1] = 64;
	}
	/*
	Display_A_String("X:");
	UART_Show_Number(x_AD_Value,0);
	Display_A_String("Y:");
	UART_Show_Number(y_AD_Value,0);
	
	Display_A_String("X_T:");
	UART_Show_Number(x_Temp,0);
	Display_A_String("Y_T:");
	UART_Show_Number(y_Temp,1);*/
}

void Touch_Paint(void)
{
  	unsigned char Point_xy[2]={0};
	unsigned char Point_xy_Temp[2]={0};
	
	Map_Touch_xy(Point_xy);
	Map_Touch_xy(Point_xy_Temp);
	if((Point_xy[0] == Point_xy_Temp[0])&&(Point_xy[1] == Point_xy_Temp[1]))
	{
	  	///////////////////////////////////
		//Draw_Dot(Point_xy[0], Point_xy[1]);
	    //////////////////////////////////
	}
}
/*
void mapxy(int *pos)
{
 readxy();		//读取触屏电压
 pos[0]=0;
 if(cmp_x>80)
   pos[0]=1+(cmp_x-80)*128/(917-80);
 if(pos[0]>128)
   pos[0]=128;
 
 pos[1]=0;
 if(cmp_y>190)
   pos[1]=1+(cmp_y-190)*64/(832-190);
 if(pos[1]>64)
   pos[1]=64;
}*/