Re: /dev/ACM, LG Arena phone, and tethering
On 04/02/14 21:17, Darac Marjal wrote:
> On Tue, Feb 04, 2014 at 02:37:09PM +1100, Scott Ferguson wrote:
>> I have an LG Arena KM900 mobile phone I'd like to be able to
>> tether with Debian Wheezy boxes.
<snipped>
>>
>>
>> I can't mount the fake CD-ROM it creates at /dev/sg2 (or
>> /dev/sr0)
>
> Given what you've done above, that's not surprising. Note the line
> at [10210] where it says "USB disconnect". USBModeSwitch will cause
> the USB device to stop pretending to be a CDRom and start being a
> modem.
usb-modeswitch doesn't appear to be triggered.
> The CDRom device should disappear when /dev/ttyACM0 appears.
No, it's still there (/dev/sg2), as is /dev/sr0 (sticky block special).
> That said, you *should* be able to mount the CDROM /before/ doing
> the mode-switch, but just expect it to contain Windows drivers.
With, I hope, driver.inf, which may contain the endpoint string I'm
after (so I can create a usb-modeswitch rule to flip it into useable
devs, maybe).
>
>>
>> I have pointed picocom at /dev/ttyACM0 without error, but echoing
>> stuff to /dev/sg* doesn't make it to the picocom terminal
>
> I don't know what the implications of "This device [...] is not a
> modem"
Standard response for cdc_acm
> are, but a web search on that line may help.
Which brought me to the list....
>
>>
>>
>> Any suggestions appreciated, (especially safe AT commands).
>
> AT (Should reply "OK") ATI (Show Identification)
>
Those work, most standard AT commands don't, these devices generally
use the 3G variants.
Kind regards
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