Quote:
Originally Posted by labatt
SD - I won't go so far as to ask if it uses CTS/RTS for flow control.. I assume it's a bit more modern than XON/XOFF  I can geek too... |
Damn... Brak beat me too it... CTS and RTS each require signal lines... which NMEA doesn't require. The three wires in the NMEA are a data-in, data-out and ground... and if you are connecting a listen-only device, like a DSC-capable VHF, you only need two wires. The Standard Horizon 471 handheld has two wires for the NMEA GPS data in connection.
My guess is that Brak is right... that NMEA 0183 doesn't support any flow control whatsoever. That may be one reason the standard is limited to two talker devices per connection.
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Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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