Gpredict and GPSD

SatoshiYasuda · March 5, 2020, 1:38am

I have same error and fixed this error for libgps 3.17.
Patch is as floowsa.

Satoshi

*** qth-data.c.org 2020-03-04 14:03:02.340545844 +0900
— qth-data.c 2020-03-05 08:56:45.554185002 +0900
*************** gboolean qth_data_update(qth_t * qth, gd
*** 472,477 ****
— 472,532 ----
}
if (gps_read(qth->gps_data) == 0)
{

                /* handling packet_set inline with

                   http://gpsd.berlios.de/client-howto.html

```
                 */
```

                if (qth->gps_data->set & PACKET_SET)

```
                {
```

                    if (qth->gps_data->fix.mode >= MODE_2D)

```
                    {
```

                        if (qth->lat != qth->gps_data->fix.latitude)

```
                        {
```

                            qth->lat = qth->gps_data->fix.latitude;

                            retval = TRUE;

```
                        }
```

                        if (qth->lon != qth->gps_data->fix.longitude)

```
                        {
```

                            qth->lon = qth->gps_data->fix.longitude;

                            retval = TRUE;

```
                        }
```
```
                    }
```

                    if (qth->gps_data->fix.mode == MODE_3D)

```
                    {
```

                        if (qth->alt != qth->gps_data->fix.altitude)

```
                        {
```

                            qth->alt = qth->gps_data->fix.altitude;

                            retval = TRUE;

```
                        }
```
```
                    }
```
```
                    else
```
```
                    {
```

                        if (qth->alt != 0)

```
                        {
```

                            qth->alt = 0;

                            retval = TRUE;

```
                        }
```
```
                    }
```
```
                }
```
```
            }
```
```
        }
```
#endif
```
        break;
```
```
  case 6:
```
#if GPSD_API_MAJOR_VERSION==6

        while (gps_waiting(qth->gps_data, 0) == 1)

```
        {
```

            /* see comment from above */

            /* hopefully not needed but does not hurt anything. */

```
            num_loops++;
```
```
            if (num_loops > 1000)
```
```
            {
```
```
                retval = FALSE;
```
```
                break;
```
```
            }
```

            if (gps_read(qth->gps_data) > 0)

            {
                /* handling packet_set inline with
                   http://gpsd.berlios.de/client-howto.html
                 */

*************** gboolean qth_data_update_init(qth_t * qt
*** 603,608 ****
— 658,686 ----
g_free(port);
#endif
break;

```
case 6:
```
#if GPSD_API_MAJOR_VERSION==6

    /* open the connection to gpsd and start the stream */

    qth->gps_data = g_try_new0(struct gps_data_t, 1);

    port = g_strdup_printf("%d", qth->gpsd_port);

    if (gps_open(qth->gpsd_server, port, qth->gps_data) == -1)

```
    {
```
```
        free(qth->gps_data);
```
```
        qth->gps_data = NULL;
```

        sat_log_log(SAT_LOG_LEVEL_ERROR,

                    _("%s: Could not open gpsd at  %s:%d"),

                    __func__, qth->gpsd_server, qth->gpsd_port);

```
        retval = FALSE;
```
```
    }
```
```
    else
```
```
    {
```

        (void)gps_stream(qth->gps_data, WATCH_ENABLE, NULL);

```
        retval = TRUE;
```
```
    }
```
```
    g_free(port);
```
#endif

    break;
default:
    sat_log_log(SAT_LOG_LEVEL_ERROR,
                _("%s: Unsupported gpsd api major version (%d)"),

*************** void qth_data_update_stop(qth_t * qth)
*** 639,648 ****
switch (GPSD_API_MAJOR_VERSION)
{
case 4:
! gps_close(qth->gps_data);
! break;
case 5:
gps_close(qth->gps_data);
break;
default:
break;
— 717,735 ----
switch (GPSD_API_MAJOR_VERSION)
{
case 4:
! #if GPSD_API_MAJOR_VERSION==4
! gps_close(qth->gps_data);
! #endif
! break;
case 5:

#if GPSD_API_MAJOR_VERSION==5
```
      gps_close(qth->gps_data);
```
#endif
```
      break;
```
```
  case 6:
```
#if GPSD_API_MAJOR_VERSION==6
gps_close(qth->gps_data);
#endif
break;
default:
break;