Getting timeout error while reading data.

[Bhavna Harani]

Hello All,

I am giving data dynamically to gpsd over udp by the below command.

gpsd -D 1 -n udp://127.0.0.1:8080

every 1 second I am feeding data to udp socket. When I tried to read the data

using gpslib I got a timeout error. 

Below is a snippet to feed data at 1 second frequency.

while(fgets(buffer, bufferLength, filePointer))
{
    printf("%s\n", buffer);
    sleep(1);
sendto(sockfd, buffer, strlen(buffer),MSG_CONFIRM, (const struct sockaddr *) &servaddr,sizeof(servaddr));
}

Below is a snippet for reading the data.

if (0 != gps_open("localhost", "2947", &gpsd_gps_data))
{
printf( "LC79D_GNSS open error");
exit(-1);
}

/*enable watch enable from gpsd demon*/
(void)gps_stream(&gpsd_gps_data, WATCH_ENABLE | WATCH_JSON, NULL);
// Wait for data available.

#define GNSS_DATA_TIME_OUT  5000000
while (gps_waiting(&gpsd_gps_data, GNSS_DATA_TIME_OUT))
{

if (-1 == gps_read(&gpsd_gps_data, NULL, 0))
{printf ( "GNSS Read ERROR");

....
}

printf ( "timeout");

}

 I have tried with "gpspipe -r" ,I was able to get a raw string which I parsed dynamically.

Thanks & Regards,

Bhavna