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Re: [gpsd-users] Right baud rate could not be detected "-n" flag is NOT
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From: |
Gary E. Miller |
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Subject: |
Re: [gpsd-users] Right baud rate could not be detected "-n" flag is NOT used |
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Date: |
Fri, 12 Jun 2015 09:08:16 -0700 |
Yo Jon!
On Fri, 12 Jun 2015 10:37:30 -0400
Jon Schlueter <address@hidden> wrote:
> > I am facing this strange behavior with a Sirf IV based gps module
> > configured in NMEA mode with baudrate 115200.
> >
> > When I run gpsd with -n flag, gpsd is usually able to detect the
> > correct
> > speed (115200), instead when no -n flag is provided, and the client
> > connects, the detected speed is wrong (4800) and gpsd gets stuck.
Baud rate detection is time consuming. Using the -n spends all the
time autobauding once at the beginning. Not using -n means every time
a client connects the autobaud sequence must restart.
There are two easy answers. One, always use -n, there is no
downside to -n. Two, use stty to set the serial port speed to
115200 before starting gpsd, then autobaud is not needed.
Better yet, do both.
RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
address@hidden Tel:+1(541)382-8588