2G-IOT No fun with AT+CFUN

TomO

Hey guys,
I wanted to use the 2G Module on my OPi 2G-IOT, but after receiving
CTZV:...
(sometimes I even get some infos more)
the whole system hangs (no interaction through DebugTTL, SSH and no response to ping).
I tried multiple PSUs, for one I have the Raspberry PI PSU with 5.1V 2,5A, and two laboratory PSUs, one with a limit of 3A and one with a limit of 5A.

an example of the communication:

1. AT
   
2. OK
   
3. AT+CPIN?
   
4. +CPIN:READY
   
5. 
   
6. OK
   
7. AT+CREG?
   
8. +CREG: 1,10
   
9. 
   
10. OK
    
11. AT+CSQ
    
12. +CSQ: 0,0
    
13. 
    
14. OK
    
15. AT+CFUN=1
    
16. OK
    
17. 
    
18. +CTZV:18/2/28,15:51:5,4
    
19. 
    
20. +CIEV: service,  1
    
21. +CIEV: roam, 0
    
22. 
    
23. +CREG: 1

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I also tried the example programs, but the system hangs also with them.

Might this be a hardware defect?

noffe

I use 2G module successfully
Just end AT commands to /dev/modem0 port
Thanks

annokt

Hey TomO,

I have the exact same issue.
Have you resolved it?