Garmin gpsmap 172c - gps signal

[sindreh]

I have opencpn v5.0 installed on a raspberry pi 3+.
Is it possible to get the gps signal from a garmin gpsmap 172c connected to a serial to usb hub (exsys USB to 4S Serial RS-232 ports) ?

[transmitterdan]

Originally Posted by sindreh

I have opencpn v5.0 installed on a raspberry pi 3+.

Is it possible to get the gps signal from a garmin gpsmap 172c connected to a serial to usb hub (exsys USB to 4S Serial RS-232 ports) ?

Yes, connect NMEA out + (blue) to pin 2, NMEA in + (brown) to pin 3 and connect NMEA gnd (black) to pin 5.

[sindreh]

Do I get the gps signal into opencpn by creating a new serial connection?

[Spot]

Yes. I just had a chance to do this with Win10 and a serial to USB adapter:

http://www.cruisersforum.com/forums/...sb-218908.html

[transmitterdan]

Originally Posted by sindreh

Do I get the gps signal into opencpn by creating a new serial connection?

Yes, create the connection with baud rate 4800, 8 data, no parity, 1 stop bit. 4800:8,N,1

Use the NMEA debug window to see the NMEA messages. Using USB serial ports is not always simple because port numbers can change. OpenCPN should show you a list if available ports. The exact comm port number may require some trial and error which is why the NMEA debug window helps.