Example #1
0
int tc_main(int argc, char *argv[])
#endif
{
#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_MOUSE
  struct mouse_report_s sample;
#else
  struct touch_sample_s sample;
#endif
  ssize_t nbytes;
#if defined(CONFIG_NSH_BUILTIN_APPS) || CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES > 0
  long nsamples;
#endif
  int fd;
  int errval = 0;
#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_ARCHINIT
  int ret;
#endif

  /* If this example is configured as an NX add-on, then limit the number of
   * samples that we collect before returning.  Otherwise, we never return
   */

#if defined(CONFIG_NSH_BUILTIN_APPS)
  nsamples = 1;
  if (argc > 1)
    {
      nsamples = strtol(argv[1], NULL, 10);
    }
  printf("tc_main: nsamples: %d\n", nsamples);
#elif CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES > 0
  printf("tc_main: nsamples: %d\n", CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES);
#endif

#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_ARCHINIT
  /* Initialization of the touchscreen hardware is performed by logic
   * external to this test.
   */

  printf("tc_main: Initializing external touchscreen device\n");
  ret = arch_tcinitialize(CONFIG_EXAMPLES_TOUCHSCREEN_MINOR);
  if (ret != OK)
    {
      printf("tc_main: arch_tcinitialize failed: %d\n", ret);
      errval = 1;
      goto errout;
    }
#endif

  /* Open the touchscreen device for reading */

  printf("tc_main: Opening %s\n", CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH);
  fd = open(CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, O_RDONLY);
  if (fd < 0)
    {
      printf("tc_main: open %s failed: %d\n",
              CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, errno);
      errval = 2;
      goto errout_with_tc;
    }

  /* Now loop the appropriate number of times, displaying the collected
   * touchscreen samples.
   */

#if defined(CONFIG_NSH_BUILTIN_APPS)
  for (; nsamples > 0; nsamples--)
#elif CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES > 0
  for (nsamples = 0; nsamples < CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES; nsamples++)
#else
  for (;;)
#endif
  {
    /* Flush any output before the loop entered or from the previous pass
     * through the loop.
     */

    fflush(stdout);

#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_MOUSE
    /* Read one sample */

    ivdbg("Reading...\n");
    nbytes = read(fd, &sample, sizeof(struct mouse_report_s));
    ivdbg("Bytes read: %d\n", nbytes);

    /* Handle unexpected return values */

    if (nbytes < 0)
      {
        errval = errno;
        if (errval != EINTR)
          {
            printf("tc_main: read %s failed: %d\n",
                   CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, errval);
            errval = 3;
            goto errout_with_dev;
          }

        printf("tc_main: Interrupted read...\n");
      }
    else if (nbytes != sizeof(struct mouse_report_s))
      {
        printf("tc_main: Unexpected read size=%d, expected=%d, Ignoring\n",
               nbytes, sizeof(struct mouse_report_s));
      }

    /* Print the sample data on successful return */

    else
      {
        printf("Sample     :\n");
        printf("   buttons : %02x\n", sample.buttons);
        printf("         x : %d\n",   sample.x);
        printf("         y : %d\n",   sample.y);
#ifdef CONFIG_MOUSE_WHEEL
        printf("     wheel : %d\n",   sample.wheel);
#endif
      }
#else
    /* Read one sample */

    ivdbg("Reading...\n");
    nbytes = read(fd, &sample, sizeof(struct touch_sample_s));
    ivdbg("Bytes read: %d\n", nbytes);

    /* Handle unexpected return values */

    if (nbytes < 0)
      {
        errval = errno;
        if (errval != EINTR)
          {
            printf("tc_main: read %s failed: %d\n",
                   CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, errval);
            errval = 3;
            goto errout_with_dev;
          }

        printf("tc_main: Interrupted read...\n");
      }
    else if (nbytes != sizeof(struct touch_sample_s))
      {
        printf("tc_main: Unexpected read size=%d, expected=%d, Ignoring\n",
               nbytes, sizeof(struct touch_sample_s));
      }

    /* Print the sample data on successful return */

    else
      {
        printf("Sample     :\n");
        printf("   npoints : %d\n",   sample.npoints);
        printf("Point 1    :\n");
        printf("        id : %d\n",   sample.point[0].id);
        printf("     flags : %02x\n", sample.point[0].flags);
        printf("         x : %d\n",   sample.point[0].x);
        printf("         y : %d\n",   sample.point[0].y);
        printf("         h : %d\n",   sample.point[0].h);
        printf("         w : %d\n",   sample.point[0].w);
        printf("  pressure : %d\n",   sample.point[0].pressure);
      }
#endif
  }

errout_with_dev:
  close(fd);

errout_with_tc:
#ifdef CONFIG_EXAMPLES_TOUCHSCREEN_ARCHINIT
  arch_tcuninitialize();

errout:
#endif
  printf("Terminating!\n");
  fflush(stdout);
  return errval;
}
Example #2
0
int arch_tcinitialize(int minor)
{
  FAR NX_DRIVERTYPE *dev;
  nxgl_mxpixel_t color;
  int ret;

  /* Initialize the simulated frame buffer device.  We need to create an
   * X11 window to support the mouse-driven touchscreen simulation.
   */

  ivdbg("Initializing framebuffer\n");
  ret = up_fbinitialize();
  if (ret < 0)
    {
      idbg("up_fbinitialize failed: %d\n", -ret);
      goto errout;
    }

  dev = up_fbgetvplane(0);
  if (!dev)
    {
      idbg("up_fbgetvplane 0 failed\n");
      ret = -ENODEV;
      goto errout_with_fb;
    }

  /* Then open NX */

  ivdbg("Open NX\n");
  g_simtc.hnx = nx_open(dev);
  if (!g_simtc.hnx)
    {
      ret = -errno;
      idbg("nx_open failed: %d\n", ret);
      goto errout_with_fb;
    }

  /* Set the background to the configured background color */

  ivdbg("Set background color=%d\n", CONFIG_EXAMPLES_TOUCHSCREEN_BGCOLOR);

  color = CONFIG_EXAMPLES_TOUCHSCREEN_BGCOLOR;
  ret = nx_setbgcolor(g_simtc.hnx, &color);
  if (ret < 0)
    {
      idbg("nx_setbgcolor failed: %d\n", ret);
      goto errout_with_nx;
    }

  /* Finally, initialize the touchscreen simulation on the X window */

  ret = arch_tcinitialize(minor);
  if (ret < 0)
    {
      idbg("arch_tcinitialize failed: %d\n", ret);
      goto errout_with_nx;
    }
  return OK;

errout_with_nx:
  nx_close(g_simtc.hnx);
  goto errout;
errout_with_fb:
  fb_uninitialize();
errout:
  return ret;
}