ts_test.c

老外写的触摸屏驱动程序

/*-------------------------------------------------------------------------
---*/
/* ts_test.c - little proggy to test the response of the touch screen drv
 *
 * Author: Philippe Ney <[e-mail]>
 * Copyright (C) 2001 SMARTDATA <www.smartdata.ch>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
/*-------------------------------------------------------------------------
---*/

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <asm/MC68VZ328.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <asm/fcntl.h>
#include <sys/ioctl.h>

#include "/opt/uclinux-dist/uClinux-dist/linux-2.4.x/drivers/char/mc68328digi.h"

#define DEVICE_FILE_NAME  "/dev/ts"

void init_pen_info(struct ts_pen_info *in) {
  in->x = 0;
  in->y = 0;
  in->dx = 0;
  in->dy = 0;
  in->event = EV_PEN_UP;
  in->ev_no = 0;
  in->state &= 0;
}


/* main */
main() {
  char input[200];
  int  file_desc=0;
  int  isTSopen=0;
  char c;
  struct ts_pen_info    pen_info;
  struct ts_drv_params  pen_set;
  unsigned long         pps;
  int  bytes_transfered=0,ret_val;
  char *pp;
  int i;

do {
  
  printf("\n- (o)pen device\n");
  printf("- (n)pen device with O_NONBLOCK flag\n");
  printf("- (c)lose device\n");
  printf("- (r)ead device\n");
  printf("- (g)et driver params\n");
  printf("- (s)et driver params\n");
  printf("- (q)uit the program\n");
  printf("Please input a char: ");
  fflush(stdout);

  gets(input);
  sscanf(input,"%c",&c);

  if((c=='o')&&(!isTSopen)) {
    file_desc = open(DEVICE_FILE_NAME,O_RDWR);
    if(file_desc < 0) {
      printf("Can't open device file: %s\n",DEVICE_FILE_NAME);
      printf("Error: %s\n",strerror(errno));
    }
    else {
      printf("Device %s open -> It works!!!!\n");
      isTSopen=1;
    }
  }
  if((c=='n')&&(!isTSopen)) {
    file_desc = open(DEVICE_FILE_NAME,O_RDWR | O_NONBLOCK);
    if(file_desc < 0) {
      printf("Can't open device file: %s in nonblocking mode\n",
             DEVICE_FILE_NAME);
      printf("Error: %s\n",strerror(errno));
    }
    else {
      printf("Device %s open in nonblocking mode -> It works!!!!\n");
      isTSopen=1;
    }
  }
  if(c=='c') {
    if(isTSopen) {
      close(file_desc);
      printf("Device %s closed.\n",DEVICE_FILE_NAME);
      isTSopen=0;
    }
    else printf ("Device %s not open!!\n",DEVICE_FILE_NAME);
  }
  if(c=='r') {
    if(isTSopen) {
      init_pen_info(&pen_info);
      while((pen_info.x < 4095) &&(pen_info.y < 4095)) {
      //for(i=0;i<10;i++) {
        bytes_transfered=read(file_desc,&pen_info,sizeof(pen_info));
        if(pen_info.event == EV_PEN_UP)    printf("U ");
        if(pen_info.event == EV_PEN_DOWN)  printf("D ");
        if(pen_info.event == EV_PEN_MOVE)  printf("M ");
        printf("(%i,%i) ",pen_info.x,pen_info.y);
        printf("ev_no:%d ",pen_info.ev_no);
        printf("ev_usec:%ld\n",pen_info.ev_time);
        //printf("nb bytes transfered: %d\n",bytes_transfered);
      }
    }
    else printf ("READ ERROR. Device %s not open!!\n",DEVICE_FILE_NAME);
  }

  if(c=='g') {
    if(isTSopen) {
      ret_val=ioctl(file_desc,TS_PARAMS_GET,&pen_set);
      if(ret_val < 0) printf("Error: %s\n",strerror(errno));
      printf("x_ratio y_ratio x_offset y_offset Move_thrs");
      printf(" Follow_thrs deglitch_ms evnt_q_on\n");
      printf("%d/%d\t%d/%d\t%d\t%d\t%d\t%d\t%d\t%d\n",
             pen_set.x_ratio_num,pen_set.x_ratio_den,
	     pen_set.y_ratio_num,pen_set.y_ratio_den,
             pen_set.x_offset,pen_set.y_offset,
             pen_set.mv_thrs,pen_set.follow_thrs,
             pen_set.deglitch_ms,pen_set.event_queue_on);
    }
    else printf ("READ ERROR. Device %s not open!!\n",DEVICE_FILE_NAME);
  }

  if(c=='s') {
    if(isTSopen) {
      printf("X ratio num ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.x_ratio_num);
      printf("X ratio den ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.x_ratio_den);
      printf("Y ratio num ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.y_ratio_num);
      printf("Y ratio den ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.y_ratio_den);
      printf("X offset ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.x_offset);
      printf("Y offset ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.y_offset);
      printf("Move threshold ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.mv_thrs);
      printf("Follow threshold ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.follow_thrs);
      printf("Deglitch time (ms) ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.deglitch_ms);
      printf("Event queue (0-1) ? ");fflush(stdout);
      gets(input);
      sscanf(input,"%d",&pen_set.event_queue_on);

      ret_val=ioctl(file_desc,TS_PARAMS_SET,&pen_set);
      if(ret_val < 0) printf("Error: %s\n",strerror(errno));
      else printf("File desc: %d\n",file_desc);

      printf("x_ratio y_ratio x_offset y_offset Move_thrs");
      printf(" Follow_thrs deglitch_ms\n");
      printf("%d/%d\t%d/%d\t%d\t%d\t%d\t%d\t%d\t%d\n",
             pen_set.x_ratio_num,pen_set.x_ratio_den,
	     pen_set.y_ratio_num,pen_set.y_ratio_den,
             pen_set.x_offset,pen_set.y_offset,
             pen_set.mv_thrs,pen_set.follow_thrs,
             pen_set.deglitch_ms,pen_set.event_queue_on);
    }
    else printf ("WRITE ERROR. Device %s not open!!\n",DEVICE_FILE_NAME);
  }


//  printf("IMR bit 20: %d\n",(IMR & (1<<20)));
//  printf("ISR bit 20: %d\n",(ISR & (1<<20)));
//  printf("IPR bit 20: %d\n",(IPR & (1<<20)));

//  printf("PFDATA bit 1: %d\n",(PFDATA & (1<<1)));
//  printf("PFDIR  bit 1: %d\n",(PFDIR & (1<<1)));
//  printf("PFSEL  bit 1: %d\n",(PFSEL & (1<<1)));

}while(c!='q');

}