Imx6 Apalis GSM/3G/4G connection

Technical Support
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1

Hello,

I am trying to use Sim card (GSM/3G/4G) with apalis imx6q and Ixora carrier board.

I am following steps described in Embedded Linux Systems - GSM/3G/4G

With yocto, I have updated
(1) PPP kernel configuration (menuconfig)
(2) PPP in local.conf
(3) Compile
(4) Update to the board
(5) Insert standard sim card to X26 (Sim card) in Ixora board.

But, After (5), I cannot find any ttyUSB like a linked step. Would you let me know how can I use standard Sim-card to connect internet?

Thanks in advance.

2

hi @hkhunkim

But, After (5), I cannot find any ttyUSB like a linked step. Would you let me know how can I use standard Sim-card to connect internet?

Did you connect any USB Modem to the Ixora carrier Board? If yes, could you provide the details of the modem?
Could you provide the dmesg log in a file?

Thanks and best regards,
Jaski

3

No. I thought I could use X26 port to insert standard sim-card, didn’t it? Do I need to use USB modem for GSM/3G?

4

No, X26 really just connects to X25 where, as @jaski.tx correctly mentioned, a regular GSM/3G mini-PCIe modem needs to be inserted which usually uses USB as the underlying connection technology.

5

Thank you let me know about X26, but I still have a problem.

I have prepared USB modem (Huawei Technologies Co., Ltd. E161/E169/E620/E800 HSDPA Modem) with kernel config (menuconfig) and installed ppp

I still can’t see ttyUSB0 in the /dev.

I have double checked with menuconfig option and ppp, but ttyUSB0 port doesn’t show up.

when I lsusb,

root@apalis-imx6:/dev# lsusb

Bus 002 Device 004: ID 12d1:1001 Huawei Technologies Co., Ltd. E161/E169/E620/E800 HSDPA Modem
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

dmesg | grep -i usb

  [  754.862834] usb 2-1.3: new high-speed USB device number 3 using ci_hdrc
    [  755.031443] usb-storage 2-1.3:1.0: USB Mass Storage device detected
    [  755.040554] scsi host1: usb-storage 2-1.3:1.0
    [  756.074563] scsi 1:0:0:0: Direct-Access     ZXID     USB Storage FFFE 2.31 PQ: 0 ANSI: 2
    [  756.084401] scsi 1:0:0:1: CD-ROM            ZXID     USB Storage FFFE 2.31 PQ: 0 ANSI: 2
    [  756.293651] usb 2-1.3: USB disconnect, device number 3
    [  759.692832] usb 2-1.3: new high-speed USB device number 4 using ci_hdrc
    [  759.858480] usb-storage 2-1.3:1.2: USB Mass Storage device detected
    [  759.865805] scsi host1: usb-storage 2-1.3:1.2
    [  760.874664] scsi 1:0:0:0: Direct-Access     ZXID     USB Storage FFFE 2.31 PQ: 0 ANSI: 2
    [  760.884503] scsi 1:0:0:1: CD-ROM            ZXID     USB Storage FFFE 2.31 PQ: 0 ANSI: 2

Could you tell me what is wrong?

6

And I have also checked my sim-card with android phone!

7

Hi, Could you share the complete dmesg log in a file? Thanks.