Just to be absolutely clear on one item:
If you see NMEA
sentences on the toolbox->GPS->Show NMEA
data stream window, then OpenCPN
has opened the port OK, and NMEA data is coming. If you have no "red" boat, then the only reasons are: a)no fix, or b)wrong sentence configuration from the GPS
. As Barnakiel says, you must look at the NMEA sentences to ensure that the correct sentences are coming, and that a valid fix is available.
The problem that Jeannius is having is different. In the log is
"NMEA input device open failed: COM3...GetLastError(): 2".
We are researching this issue now. Not seen before, and somewhat mysterious if hyperterm can open COM3 independently.
Jeannius, as a test, please check your system Device Manager to verify that COM3 is indeed available in the COM ports list before starting OpenCPN
. You may find the USB GPS
com port number by plugging and unplugging the GPS while the Device Manager is open. The port will come and go clearly.