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Topic: gsmAccess fails (Read 500 times) previous topic - next topic

bbiehler

When I try to send a SMS the MKR GSM 1400 hangs with the example code. Same thing with every code which calls gsmAccess.beginn() I tried so far.
If I switch on the debug mode with
GSM gsmAccess(true);
I get the output as can be seen in the attachment. I tried two different sim cards, basically with the same result. The only difference is, the number of times the +CREG: 0,0 entries are repeated.
The antenna is attached. I tried with and without the LiPo, with and without a 5V Vin voltage.
Any ideas?

tbartels

Hello,
I can not connect to GSM with the Board.
Sim from "Things Mobile" APN: "TM" no PIN. The card words with a Board from MediaTek.
I use an antenna from Hologram Dash, which has the same u-blox chip on it. 2000mAh battery is connected
I tried some example sketches and have inserted:
MODEM.debug();
Everytime the data on serial port ends with:
+UMWI: 0,4
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG?

+CREG: 0,0

OK

Then nothing more happens.
This is the result of example Sketch "GPRSUdpNtpClient"
can someone help?

sandeepmistry

Hi @tbartels,

Seems like a power issue to me, was the lipo battery you connected charged? What state was the charge LED in?

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