tp_test.c

2046触摸屏测试源程序代码。手机屏应用的液晶模组单片机驱动。

#define _TP_TEST_C_
#include "reg51.h"
//#include "tp_test.h"

#define uchar unsigned char
#define uint unsigned int

uchar bdata num;
sbit bit7=num^7;


unsigned int TP_X=0,TP_Y=0;
unsigned int LCD_X=0,LCD_Y=0; //coordinate value read from TP
unsigned int ymin=12,ymax=230,xmin=12,xmax=230;


sbit TP_DCLK=P2^0;
sbit TP_CS=P2^1;  
sbit TP_DIN=P2^2;
sbit TP_BUSY=P2^3;
sbit TP_DOUT=P2^4;
sbit TP_PENIRQ=P3^2;

void display_rgb(uint dat1,dat2);
void write_command(uchar cdatah,cdatal);
void write_data(uchar ddata_h,ddata_l);
void WCOM(uchar Register, uchar Upper_Code, uchar Lower_Code);
void delay(uint t);

uchar code home[];
uchar code email[];
uchar code book[];
uchar code phone[];
uchar code mp4[];
uchar code flash[];
uchar code camera[];

/////////////////////////////////////
void SPI_Start() //SPI开始
{
TP_DCLK=0;
TP_CS=1;
TP_DIN=1;
TP_DCLK=1;
TP_CS=0;
}

//////////////////////////////////

void TP_write(uchar t)
{
uchar i;
num=t;
for(i=0;i<8;i++)
 { 

  TP_DIN=bit7;
  TP_DCLK=0; 
  TP_DCLK=1;   //rising edge
  num=num<<1;
 }
  TP_DCLK=0;
}

uchar TP_read(void)
{
uchar i,tp_data=0;
TP_CS=0;
 
for(i=0;i<8;i++)
 {
  tp_data<<=1;
  TP_DCLK=1;      //falling edge
  TP_DCLK=0;
  if(TP_DOUT)   tp_data++;
  }
  return(tp_data);
}


void get_TP_X_addr()//give the control byte,the read 5 times and get the average
{
  uint i,sum=0;
for(i=0;i<5;i++)
 {
  TP_CS=0;
  TP_write(0xd8+1);//PD0=0,PENIRQ DISABLE
  
  sum+=TP_read();
  TP_CS=1;  //TP_CS=1;
 }
  TP_write(0xd8);//PD0=1,PENIRQ ENABLE
  TP_X=sum/5+4;//get the average
}


void get_TP_Y_addr()//give the control byte,the read 5 times and get the average
{
  uint i,sum=0;
for(i=0;i<5;i++)
 {
  TP_CS=0;
  TP_write(0x98+1);//PD0=0,PENIRQ DISABLE
  
  sum+=TP_read();
  TP_CS=1;  //TP_CS=1;
 }
TP_write(0x98);//PD0=1,PENIRQ ENABLE

TP_Y=sum/5-11;//get the average
}


void write_to_LCD(uint TP_X,TP_Y)
{
uchar LCD_YH;

LCD_X=(TP_X-xmin)*1.1;//240/(xmax-xmin);
//LCD_X=LCD_X+5;
    if (LCD_X>240)    LCD_X=240;
    if (LCD_X<0)      LCD_X=0;

LCD_Y=(TP_Y-ymin)*1.468;//320/(ymax-ymin);
//LCD_Y=LCD_Y-13;
	if (LCD_Y>320)    LCD_Y=320;
	if (LCD_Y<0)      LCD_Y=0;

LCD_Y=320-LCD_Y;

LCD_YH=(LCD_Y>>8)&&0xff;