MC7304 - AT!DAFTMACT CME ERROR

IoT Modules MC/EM Series
1

Hi,

I am sometimes facing a problem when trying to get to FTM.
I issue these commands :
AT+CPIN?
+CPIN: READY

AT!ENTERCND="****" (hidden)
OK

AT!DAFTMACT
+CME ERROR: operation not supported

Sometimes, the command will return a 6-digit number, sometimes this error.
Do you have any clue how to solve it?

Thank you,
Regards,
Grégoire

2

Hello,
This seems wierd that same command showing error sometimes and sometime not !
Please provide answers of following questions.

  1. Are you using multiple modules ? If yes then does all the modules contain same FW?
  2. Is there any specific use case in which you are getting the error response?
  3. Are you making sure that you get OK response for AT!ENTERCND command?

Thanks & Regards,
Rex

3

Hello Rex,

Thanks for replying!

  • Yes, I am actually using two modules that are exactly the same, with the same SW version. Both are plugged on the same board and I can access them on two different serial links. When I see the issue on one module, I have the issue on the second one.

  • When I restart the module (turn off, then turn on supply) and that I connect the module when it boots up, I issue the commands as follows :

AT
OK
AT!ENTERCND=“A710”
OK
AT!DAFTMACT
+CME ERROR: operation not supported

But for the moment I see no schematic or repeatability procedure.

  • Yes, see my previous answer.

Regards,
Grégoire

4

Good morning!

Does someone have any idea how to solve this problem?

Thank you!
Grégoire

5

Do you think this could be something related to the timing the commands are being issued with?

6

Ok, I think I found the problem.
It must be related to the LPM ( Low Power mode). I deactivated it under Linux with the qmicli tool, set the power mode to online.

Thank you for support, hope this helps!
Grégoire