Cannot connect the shield with my huawei me909u-521 modem

End-of-Life Product 3G-4G/LTE Base Shield
1

I followed the steps of ppp connection is the shield documentation and it doesn’t work. The same for qmi.

2

Hi @nfernandez,

Could you share the whole log of sudo pon or the response of the following AT commands?

  • AT+CFUN?
  • AT+CPIN?
  • ATI
  • AT+CREG?
  • AT+CGATT?
  • AT+COPS?
  • AT^HCSQ?

HUAWEI ME909u-521 LTE LGA Module - AT Command Interface Specification
HUAWEI ME909u-521 LTE Mini PCIe Module - Hardware Guide

3

  • AT+CFUN?
    +CFUN: 1
    OK

  • AT+CPIN?
    +CPIN: SIM PIN
    OK

  • ATI
    OK
    Manufacturer: Huawei Technologies Co., Ltd.
    Model: ME909u-521
    Revision: 12.636.11.01.00
    +GCAP: +CGSM,+DS,+ES

  • AT+CREG?
    +CME ERROR: 11

  • AT+CGATT?
    +CME ERROR: 11

  • AT+COPS?
    +CME ERROR: 11

  • AT^HCSQ?
    ^HCSQ: “WCDMA”,45,50,53,0
    OK

After entering the pin with AT+CPIN=xxxx:

  • AT+CREG?
    +CREG: 0,1
    OK

  • AT+CGATT?
    +CGATT: 1
    OK

  • AT+COPS?
    +COPS: 0,0,“vodafone ES”,7
    OK

But I don’t get any interface of ppp and moreover any IP address.