NMEA mode for GSD4t

[zamaudio]

Hi, I had a look into the binary that android uses to talk to the gps on the GT-I9100, it looks like there is a way to force the mode to NMEA output, but its not a normal operation of the GPS because the code skips this mode. Can you try setting the baud/start/stop/parity rate with 115200 / 8n1. There is a command that sets NMEA mode output according to my findings...

[zamaudio]

I think you need to use setserial on the GPS tty... im not sure how to do it on my phone

[zamaudio]

http://dev.gateworks.com/w2sg0008i/NMEA_Reference_Manual_%28CS-129435-MA-1%29.pdf See Message 100 for NMEA mode

This is also useful:
http://trac.gateworks.com/wiki/gps#W2SG0008iSiRFStarIVNMEACommandReference:

[niclashoyer]

@zamaudio I thought the same and just tried getting NMEA output on my SGS2 using stty, but that did not work.

I just found the explanation here:

#3 (comment)

It seems that the reference manuals refer to the "GSD4t-solution", which means the GSD4t-chip with the proprietary user space daemon combined. Unfortunately it seems that we still need to reimplement the user space daemon.