GPS off

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invisiblerabbit
 
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GPS off

Post by invisiblerabbit »

I am using the FONA 808 shield with an Arduino Uno. When I attempt the use the GPS through FONAtest I get a response of "GPS off" using option 'x'. Below are the responses that I receive.

FONA> O
---> AT+CGNSPWR?
<--- +CGNSPWR: 0
---> AT+CGNSPWR=1
<--- OK
FONA> O
---> AT+CGNSPWR?
<--- +CGNSPWR: 1
FONA> x
---> AT+CGNSINF
<--- +CGNSINF: 1,0,19800105235953.000,,,,0.00,0.0,0,,,,,,0,0,,,,,
GPS off

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

wait a few moments and try sending 'x' again - might need a bit to get spun up?

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invisiblerabbit
 
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Re: GPS off

Post by invisiblerabbit »

I waited about 20 minutes and checked again. It is still saying GPS off. I verified that the power status was still 1. Any other suggestions?

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

you have an antenna connected and everything? :/

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invisiblerabbit
 
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Re: GPS off

Post by invisiblerabbit »

I do. It is a bgps1403a2 from Seeedstudio which I had laying around.

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

can you take a clear photo of your entire setup? include the GPS antenna and the FONA808 connection

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invisiblerabbit
 
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Re: GPS off

Post by invisiblerabbit »

FONA 808.jpg
FONA 808.jpg (983.94 KiB) Viewed 467 times

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

are you positive thats a passive antenna? that would make it not work. you really need it to be the right kind :)

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invisiblerabbit
 
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Re: GPS off

Post by invisiblerabbit »

I have not found anything saying it is definitively passive. I ordered one of yours that should be here in a few days, so I will try that theory when it arrives.

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duckor
 
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Re: GPS off

Post by duckor »

I'm having the same issue as well. Using "O" to turn on the GPS but the "x" command returns GPS Off. I have the Fona 808 and the recommended antenna that was listed on your site.

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

ok lemme check this out with a FONA808 - the code may be broken (but also make sure to get a passive GPS antenna!)

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invisiblerabbit
 
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Re: GPS off

Post by invisiblerabbit »

I just received my new antenna (part # 2460) and I am getting the same results as before; GPS off.

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duckor
 
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Re: GPS off

Post by duckor »

I was finally able to get it working for about 2 minutes. I didn't touch anything and now I get the GPS off again. Not exactly sure if I did anything differently.

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

ok updated the code so it now prints 'no fix' rather than GPS off
https://github.com/adafruit/Adafruit_FONA
dont forget, you need to have the antenna outside, pointed at the sky, and it can take many minutes to get location fix!

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adafruit2
 
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Re: GPS off

Post by adafruit2 »

dont forget you can turn on raw NMEA out when the GPS is on and read out the raw data, this will tell you what satellites are visible

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