OpenWrt Forum Archive

Hi all,

I have a TL-MR3020 with Barrier Breaker 14.07 (svn-r10530) with a USB hub connected to a USB ExtRoot and a Huawei E535 USB 3G Modem. I've been trying for a few days to solve this issue but haven't been able to get the modem recognized as a modem even after installing the standard kmod-usb-serial, kmod-usb-serial-option, kmod-usb-serial-wwan, kmod-usb-acm, luci-proto-3g, usb-modeswitch, and the standard kmod-usb2 (defaulted for MR3020 BB image).

From my research (which may not be comprehensive), I think that my issue should be that ttyUSBx (which then I can add the 3G WAN interface in luci) is not showing up even though the modem is detected which means the usb-modeswitch is not doing it job because,

1) when I type in lsusb, I get this

Bus 001 Device 004: ID 12d1:1446 Huawei Technologies Co., Ltd. E1552/E1800/E173 (HSPA modem)

and lsusb -v gets this

Bus 001 Device 004: ID 12d1:1446 Huawei Technologies Co., Ltd. E1552/E1800/E173 (HSPA modem)
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x12d1 Huawei Technologies Co., Ltd.
  idProduct          0x1446 E1552/E1800/E173 (HSPA modem)
  bcdDevice            0.00
  iManufacturer           3 Huawei Technologies
  iProduct                2 HUAWEI Mobile
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           55
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          1 Huawei Configuration
    bmAttributes         0xc0
      Self Powered
    MaxPower              500mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

2) However, in dmesg, my device is seen as a CD / media storage

[    8.790000] usbcore: registered new interface driver usb-storage
[    9.770000] scsi 0:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
[    9.780000] scsi 1:0:0:0: Direct-Access     HUAWEI   TF CARD Storage       PQ: 0 ANSI: 2
[    9.790000] scsi 2:0:0:0: Direct-Access     SanDisk  Cruzer Fit       1.22 PQ: 0 ANSI: 5

Therefore I'm trying to manually invoke usb-modeswitch but even after installing the package, it seems that the usb-modeswitch is not available (I presume that the commands in the wiki is for Chaos Chalmer 15.05?) however some digging around I noticed that there is a /etc/usb-mode.json which has my device vendor / product (12d1:1446)

    "12d1:1446": {
            "*": {
                "t_vendor": 4817,
                "t_product": [ 4097, 5126, 5131, 5132, 5138, 5147, 5170, 5171, 5174, 5292, 5382, 5388, 5393 ],
                "mode": "HuaweiNew",
                "msg": [  ]
            }
        },

which I presume means that the usb-modeswitch has not executed.

Now, from what I've been reading, there's a few ways around where they create their own files ? (http://b.minwi.com/2015/03/15/huawei-e3 … erbreaker/) or modify the json file (https://technicalexperiments.wordpress. … explained/) but I don't see how that's going to fix the problem of getting ttyUSB0

Also note that under /proc/bus/ there is no usb folder, only pci, so I've added the kmod-usb2-pci package just in case, I'm also not upgrading to 15.05 as there's not enough memory to run ExtRoot which I need as I'm also using pptp packages for VPN.

Can somebody point me in the right direction?

Am I supposed to manually install usb-modeswitch from (http://www.draisberghof.de/usb_modeswitch/) but that seems meant for linux computers or is there a problem with "missing" packages in BB but it seems the links from /etc/opkg.conf is the same at the one in the forum.

Thanks.