Hello Wayne,
that was my starting point - at least for the forum post, before that I´ve tried a lot of
things.
problem is I get 'garbage with pattern'. The unit seems to be working, at least it blinks
when in an open environment meaning that it has satellite lock.
by the way, the test you suggest assume a direct logic, right? That is, 0V meaning bit 0
and 2.8V meaning bit 1.
I´m a bit confused on how to interpret this info from the datasheet:
Protocol
Electrical level TTL level, Output voltage level: 0V ~ 2.85V
RS-232 level
Baud rate 4,800 bps
Output message NMEA 0183 GGA, GSA, GSV, RMC, VTG, GLL
What does it mean the RS-232 reference in "TTL level, Output voltage level: 0V ~ 2.85V, RS-232 level". Isn´t
it enough to say the TTL levels?