ts_test.c

触摸屏驱动实验 基于TEB-44B0实验平台的触摸屏驱动 包括触摸屏驱动程序与测试程序

/*
 * ts_test.c 
 *
 * touchScreen test code for SAMSUNG S3C44B0
 *
 * Author: vencent <[e-mail]>
 *
 * Date  : $Date: 2005-08-23 $ 
 */
 
#include <unistd.h> 
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include "s3c44b0x.h"

#define DEVICE_FILE_NAME  "/dev/ts" 

typedef unsigned short U16;
/*typedef struct PenPoint {
	U16 x;
	U16 y;
	unsigned char status; //0x40表示按下，0x80表示释放
};*/
typedef struct {
  U16 pressure;
  U16 x;
  U16 y;
  U16 pad;
} TS_RET;


int main()
{
 int file_desc = 0;
 int ts;
 int tsopen = 0;
 int i;
 static TS_RET ts_ret;
 /*
 outl(inl(S3C44B0X_PCONE)&(0x3cfff), S3C44B0X_PCONE); 
 outl(inl(S3C44B0X_PCONE)|(0x1000), S3C44B0X_PCONE);    //PE6 as output
  
 outl(inl(S3C44B0X_PUPE)&(0x1bf), S3C44B0X_PUPE);
  
 outl(inl(S3C44B0X_PDATE)|(0x40), S3C44B0X_PDATE);  */    /*     PE6->1   Disable I/O expand in CPLD     */
 
 file_desc = open(DEVICE_FILE_NAME, O_RDONLY);
 if(file_desc < 0)
 {
  printf("Error: Can't open the touch screen!\n");
  printf("Error: %s\n", strerror(errno));
 }
 else {
  printf("The touch screen is open successfully!\n");
  tsopen = 1;
 }
 
 while(tsopen)
 {
  // ts = read(file_desc, &pad, sizeof(PenPoint));
  read(file_desc, (char *)&ts_ret, sizeof(TS_RET));
 // ts = read(file_desc, &pad, sizeof(pad));
    //if(ts_ret.pressure>0)
    {
     printf("You have touch: X = %d, Y = %d\n", ts_ret.x, ts_ret.y);
     usleep(100000);
    } 
 } 
 return 0;
}