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Re: [gpsd-dev] 'scons install' fails on Mac OS X 10.10

From: Frank Nicholas
Subject: Re: [gpsd-dev] 'scons install' fails on Mac OS X 10.10
Date: Sat, 14 Feb 2015 15:25:17 -0500

> On Feb 14, 2015, at 12:58 PM, Eric S. Raymond <address@hidden> wrote:
> Frank Nicholas <address@hidden>:
>> address@hidden gpsd $ telnet localhost 2947
>> Trying
>> Connected to localhost.
>> Escape character is '^]'.
>> {"class":"VERSION","release":"3.12~dev","rev":"release-3.11-468-g55af5af","proto_major":3,"proto_minor":10}
>> ?WATCH={"enable":true,"json":true};
>> {"class":"DEVICES","devices":[{"class":"DEVICE","path":"/dev/tty.BT-GPS-00F765-BT-GPSCOM","driver":"NMEA0183","activated":"2015-02-14T13:57:26.151Z","flags":1,"native":0,"bps":9600,"parity":"N","stopbits":1,"cycle":1.00}]}
>> {"class":"WATCH","enable":true,"json":true,"nmea":false,"raw":0,"scaled":false,"timing":false,"split24":false,"pps":false}
> Right, so you can start a session to the GPS.  But you get no JSON sentences
> in telnet?

Correct - no JSON is ever received.  Also, cgps starts, draws the boxes, and 
the quits.  Does cgps use JSON to talk with gpsd?

I’m seeing inconsistencies when testing further.  Sometimes gpsd hunts & never 
is able to speak with the GPS (auto-bauding fails).  Let’s not spend more time 
troubleshooting with this specific GPS.  Bluetooth serial connections are a 
pain in the rear, and I suspect this is the problem.  Mac OS X drops the 
bluetooth serial connection as soon as the client closes the connection.  I 
suspect it might be resetting the tty settings or expecting certain tty 
settings when re-opening the bluetooth serial connection.

Can anyone recommend a USB GPS receiver?  With PPS would be nice, but is 
optional.  I thought someone on the list had purchased a “lot” of GPS receivers 
and still had some for sale, but don’t remember who.


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