I noted in the file gps.c of the Xastir sources two problems in the decoding
of GPS NMEA sentences: only two types of sentences are decoded $GPRMC and
$GPGGA, no checksum is tested.
GPS devices have many different preambles, just in my case $IIRMC and
$IIGGA, II stands for integrated instruments, but there are many others that
are banned from Xastir.
Moreover, a control of the checksum is not complicate and it can be added.
I ask to the developers a comment on this issue, and in the case I can offer
a proposal for modification.
Giuseppe
IZ1GCL/MM
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