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Hi,I'm trying to use the nmea_navsat_driver stack with a TOPCON GPS unit. However, the nmea_serial_driver starts and issues the following warnings:

but then goes quiet and doesn't publish any data across the fix and velocity topics. Via a serial monitor I can confirm that the NMEA sentences are being published correctly with the correct checksums. The above two messages seem to be just startup errors.

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However I can get the system to work with nmea_topic_serial_reader combined with the nmea_topic_driver on the same settings. However in this configuration it doesn't issue velocity information (from the NMEA RMC message).

Any suggestions on how to get the nmea_serial_driver to work?

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Comments

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Peter, are you still having this problem? If so, can you file an issue on https://github.com/ros-drivers/nmea_n... so we can get it sorted out. There shouldn't be any difference between running with topics or without, so there's probably a bug somewhere in here that I need to fix.