Stefal
gpsd can't gives date & time without u-blox gnss receiver
Describe the bug A base station with a septentrio receiver and without internet connection can't get date and time
Software/Hardware (please complete the following information):
- RTKBase release number 2.5.0
- SBC : all SBC without battery powered RTC
- GNSS Device: All except U-Blox
Additional context Gpsd understand the ubx format and can gives date/time to the Os. But it doesn't work with other receivers (sbf stream, rtcm stream).
One workaround is to add some nmea sentences to the usb out stream. The drawback is that these messages will be included in the raw stream.
Other solutions are :
- Set the rtkrcv process (used for realtime position on the status page) to always run, and output nmea on a new tcp port, then set gpsd to use this port. Problem: this process depends on the web service.
- Start a new rtkrcv process with nmea output, and use it for the realtime location used inside the web service.
One workaround is to add some nmea sentences to the usb out stream. The drawback is that these messages will be included in the raw stream.
⚠️ Warning, with this solution, gpsd seems to crash after a few hours.
In the next release, a new service, rtkbase_raw2nmea.service, will be available to convert raw or rtcm stream to nmea. It launches this script:
https://github.com/Stefal/rtkbase/blob/9d25f8f79524f3ae51bc017769b4a645f0c9ad09/tools/raw2nmea/raw2nmea.sh