Serial port by gpio - Printable Version

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Serial port by gpio - bmayer - 10-10-2017

Apologize me for my very poor english
i'm new on raspberry and on openplotter
I wish to add a personnal nmea flux,4 buttons add nmea sentence to opencpn, for to be recording by vdr plugin.
But, before, i wish  use gpio serial port for incoming  nmea flux
How to do that ?
with raspberry 2 ?
with raspberry 3 ?

Thanks by advance