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<  Setup Discussion  ~  Need help in supporting DWM 157 D1 donle.

PostPosted: Wed Apr 26, 2017 6:16 am Reply with quote
Posts: 4 Joined: Tue Apr 25, 2017 6:29 pm
Hi All,
I have DWM 157 D1 dongle. I have the PID,VID (PID : 7600, VID : 2001) for this dongle. But to convert it to modem. I need MessageContent for this. Could some one please help in finding the messagecontent for this dongle.


Thanks,
Narasimha


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PostPosted: Wed Apr 26, 2017 7:40 am Reply with quote
Posts: 1166 Joined: Wed Jul 11, 2012 3:14 pm Location: Koh Samui, TH
No, you don't need a control message in order to convert it to modem, you only need to select the 2nd configuration for that.
Upgrade to latest usb_modeswitch, it has 2001:7600 support.


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PostPosted: Wed Apr 26, 2017 7:45 am Reply with quote
Posts: 4 Joined: Tue Apr 25, 2017 6:29 pm
Thanks for the info. I am new to this topic. I am able to see configuration=2 in that file. Can you please explain about configuration=2 ?


Thanks,
Narasimha


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PostPosted: Wed Apr 26, 2017 8:25 am Reply with quote
Posts: 4 Joined: Tue Apr 25, 2017 6:29 pm
After changing the configuration=2 we are seeing /de/sr0 is gettng created. Can you please share which driver needs to be enabled to use it as modem.


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PostPosted: Wed Apr 26, 2017 11:05 am Reply with quote
Posts: 1166 Joined: Wed Jul 11, 2012 3:14 pm Location: Koh Samui, TH
You have these interfaces:

Cfg#1
MI_00 USB Mass Storage Device (virtual cd-rom)

Cfg#2
MI_00 Spreadtrum Extension Port
MI_01 Spreadtrum HSPA Modem
MI_02 Spreadtrum Control Port (AT-cmd)
MI_03 USB Mass Storage Device (tf/sd card ?)
MI_04 Spreadtrum Service Port

There is not yet direct support for 2001:7600 in linux serial modem driver but you can load the driver and make it work:

sudo modprobe option
echo "2001 7600" >/sys/bus/usb-serial/drivers/option1/new_id

which will create 4 ttyUSB devices where ttyUSB1 is the ppp dial-up port.


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