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Talbit
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Joined: 07/06/2011
Location: Australia
Posts: 210

Posted: 04:19pm 16 Aug 2016

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Has anyone managed to successfully change the baud rate and disable some of the sentences in this GPS module. Cheers
TalbitEdited by Talbit 2016-08-18

Talbit

Justplayin

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Joined: 31/01/2014
Location: United States
Posts: 327

Posted: 06:47pm 16 Aug 2016

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I don't have my GPS notes with me at the moment, but here are a couple of the settings I've used:

Print #2, "$PMTK251,19200*22" ' Enable 19200 baud rate

Print #2, "$PMTK251,57600*2C" ' Enable 57600 baud rate

Print #2, "$PMTK251,115200*3B" ' Enable 115200 baud rate

Print #2, "$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29" 'disable everything but GPRMC

--Curtis

I am not a Mad Scientist... It makes me happy inventing new ways to take over the world!!

Talbit
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Joined: 07/06/2011
Location: Australia
Posts: 210

Posted: 11:48pm 16 Aug 2016

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Thanks Curtis,
Very different to the limited instructions in the meager 406A manual I have.
It says to use $PSRF100 as a header to a couple of settings but doesn't offer much more. I presume you enter the instruction via a normal terminal program like Tera Term?
I'll give it a try and hope I don't lock myself out!
Cheers and thanks again
Trevor

Talbit

Justplayin

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Joined: 31/01/2014
Location: United States
Posts: 327

Posted: 07:38am 17 Aug 2016

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Ooops! I have five different GPS modules and I think the codes I posted were for the GlobalTop modules.

Below is some settings which do work on a EM-406a

Change Baud Rates (NMEA Protocol):

4800/8/N/1 - $PSRF100,1,4800,8,1,0*0E
9600/8/N/1 - $PSRF100,1,9600,8,1,0*0D
19200/8/N/1 - $PSRF100,1,19200,8,1,0*38
38400/8/N/1 - $PSRF100,1,38400,8,1,0*3D

Enable WAAS/EGNOS - $PSRF151,01*0F
Disable WAAS/EGNOS - $PSRF151,00*0E

Enable GGA Output 1sec - $PSRF103,0,0,1,1*25
Disable GGA Output - $PSRF103,0,0,0,1*24

Enable GLL Output 1sec - $PSRF103,1,0,1,1*24
Disable GLL Output - $PSRF103,1,0,0,1*25

Enable GSA Output 5sec - $PSRF103,2,0,5,1*23
Disable GSA Output - $PSRF103,2,0,0,1*26

Enable GSV Output 10sec - $PSRF103,3,0,10,1*16
Disable GSV Output - $PSRF103,3,0,0,1*27

Enable RMC Output 1sec - $PSRF103,4,0,1,1*21
Disable RMC Output - $PSRF103,4,0,0,1*20

Enable VTG Output 1sec - $PSRF103,5,0,1,1*20
Disable VTG Output - $PSRF103,5,0,0,1*21

Enable ZDA Output 1sec - $PSRF103,8,0,1,1*2D
Disable ZDA Output - $PSRF103,8,0,0,1*2C

Other Commands:

Enable Power Save Mode - $PSRF150,0,300,1000,1*10
Disable Power Save Mode - $PSRF150,0,1000,1000,0*23

Enable Development Data - $PSRF105,1*3E
Disable Development Data - $PSRF105,0*3F

Warm Start - $PSRF101,0,0,0,0,0,0,12,2*16
Factory Reset - $PSRF101,0,0,0,0,0,0,12,8*1C
Cold Start - $PSRF101,0,0,0,0,0,0,12,4*10

--CurtisEdited by Justplayin 2016-08-18

I am not a Mad Scientist... It makes me happy inventing new ways to take over the world!!

Talbit
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Joined: 07/06/2011
Location: Australia
Posts: 210

Posted: 02:27pm 17 Aug 2016

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Thanks Curtis,
That makes more sense! I'm keen to know where you got them from. Do you have a more comprehensive manual. The manual I downloaded didn't have much info at all.
Thanks again.
Cheers
Trevor

Talbit

Justplayin

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Joined: 31/01/2014
Location: United States
Posts: 327

Posted: 06:39pm 17 Aug 2016

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The list in my previous message is from a document I found on the internet a couple of years ago. I don't remember where I found it, but I think I was just googling some basic information on NMEA commands. One thing to be aware of, the information is really meant to be a set of generic examples of some of the commands. You may need to change a parameter and recalculate the checksum. Such as "Enable GSA Output" sets a 5 second update cycle instead of the usual 1 second. So, $PSRF103,2,0,5,1*23 would be $PSRF103,2,0,1,1*27 to enable GSA at 1 second updates.

--Curtis

I am not a Mad Scientist... It makes me happy inventing new ways to take over the world!!

Talbit
Senior Member

Joined: 07/06/2011
Location: Australia
Posts: 210

Posted: 01:49pm 18 Aug 2016

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Thanks Curtis,
Your list was exactly what I was looking for too but gave up and had to resort to the Backshed.
I think the GSA was at a 5 second rate as the default.
All working perfectly now!
Thanks
Trevor

Talbit

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