When I try to turn on the GPS using the FONA_Test sketch, I get the message ...
FONA> O
---> AT+CGPSPWR?
<--- ERROR
Failed to turn on
FONA>
I get the same messages for any command for GPS or GPRS.
The cellular functions seem to work fine as I have tested SMS both send and receive.
Could this be a possible bad shield? I have nothing else hooked up to the Uno and the LiPoly battery is fully charged and the unit is receiving power via USB.
FONA SIM808 GPS will not turn on
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Please be positive and constructive with your questions and comments.
- adafruit_support_mike
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Re: FONA SIM808 GPS will not turn on
Post a photo showing your hardware and connections and we'll take a look. 800x600 images usually work best.
- saulahebert
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Re: FONA SIM808 GPS will not turn on
Saul
- Franklin97355
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Re: FONA SIM808 GPS will not turn on
Can you post one from the bottom of the shield so we can see the soldering?
- saulahebert
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Re: FONA SIM808 GPS will not turn on
as requested...
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- adafruit2
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Re: FONA SIM808 GPS will not turn on
be sure you are grabbing the latest library and example code, the GPS commands changed from CGPS to CGNS (and are a little different besides)
- saulahebert
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Re: FONA SIM808 GPS will not turn on
Thank you! This turned out to be the problem... V.1 GPS commands on a V.2 GNSS SIM808 chip
Do you have a version of the FONA program and library modified for the GNSS commands?
I do not see one available for download.
Saul
Do you have a version of the FONA program and library modified for the GNSS commands?
I do not see one available for download.
Saul
- adafruit2
- Posts: 22148
- Joined: Fri Mar 11, 2005 7:36 pm
Re: FONA SIM808 GPS will not turn on
yeah the library has been updated, it now checks which version of the module is used
https://github.com/adafruit/Adafruit_FO ... 6974ae6488
https://github.com/adafruit/Adafruit_FO ... 6974ae6488
- laurchar
- Posts: 10
- Joined: Sat Oct 28, 2017 6:18 am
Re: FONA SIM808 GPS will not turn on
I nearly got the same problem, so I use the same discussion.
I have FONA V2 based on MP3337, the GPS is working well, but I use it without no GSM card.
So, GPRS positioning is not working, is that right : should I have a SIM card to get GPRS position ?
Thanks,
Laurent
I have FONA V2 based on MP3337, the GPS is working well, but I use it without no GSM card.
So, GPRS positioning is not working, is that right : should I have a SIM card to get GPRS position ?
Thanks,
Laurent
- adafruit2
- Posts: 22148
- Joined: Fri Mar 11, 2005 7:36 pm
Re: FONA SIM808 GPS will not turn on
yes! you must have a SIM card - GPRS uses the cell network
- laurchar
- Posts: 10
- Joined: Sat Oct 28, 2017 6:18 am
Re: FONA SIM808 GPS will not turn on
But, it seems that Adafruit_FONA_3G has not been updated for GNSS and V2 module.
GPS is no more working if I use Adafruit_FONA_3G.
Laurent
GPS is no more working if I use Adafruit_FONA_3G.
Laurent
- adafruit2
- Posts: 22148
- Joined: Fri Mar 11, 2005 7:36 pm
Re: FONA SIM808 GPS will not turn on
the FONA 3g does have GPS but its not very good - it takes a long time to get a fix!
Please be positive and constructive with your questions and comments.