Editing USB GPRS

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This guide covers using external USB 3G HSDPA GPRS modems with Maemo Diablo.
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= Purpose =
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== Steps ==
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Get external USB 3G HSDPA GPRS Modems to work with the Nokia N800 (or newer).
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# Enable [[USB host mode]].
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= Steps =
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# Get a powered USB hub.
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# Connect the hub to your tablet.
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# Connect your modem to the USB hub.
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# Get the SCSI kernel module from [http://fanoush.wz.cz/maemo/modules-diablo-2.6.21-200842maemo1.tar.gz Fanoush's kernel modules] (the <code>/drivers/scsi/sg.ko</code> file in the archive).
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# Load the SCSI generic Linux kernel module. [[root access|As root]]:<pre>insmod sg.ko</pre>
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== Option HSDPA Modem ==
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* Enable USB host mode.
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* get a powered USB hub.
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* connect your Nokia N8x0 to the USB hub's uplink.
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* connect your USB Modem to one of the USB hub's normal ports.
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* switch your Nokia N8x0 to USB host mode ("echo host > /sys/devices/platform/musb_hdrc/mode").
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* compile a SCSI generic Linux kernel module (or download a binary module from [http://www.internettablettalk.com/forums/attachment.php?attachmentid=633&d=1197230972 CDROM Kernel Modules] ).
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* load the SCSI generic Linux kernel module: "insmod sg.ko".
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# Compile the "HSO" Option Modem kernel module (Greg Kroah-Hartman is in the process of integrating the kernel module into the mainline kernel, but check [http://www.pharscape.org/component/option,com_forum/Itemid,68/page,viewtopic/t,445/ HSO] in the meantime or use this [http://www.scratchpost.org/software/Nokia/N8x0/Modem/ working directory] which includes compiled modules).
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== "Option" HSDPA Modem ==
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# Compile the [http://www.pharscape.org/component/option,com_forum/Itemid,68/page,viewtopic/t,425/ Rezero] Option mode switch application.
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* compile the "HSO" Option Modem kernel module (Greg Kroah-Hartman is in the process of integrating the kernel module into the mainline kernel, but check [http://www.pharscape.org/component/option,com_forum/Itemid,68/page,viewtopic/t,445/ HSO] in the meantime or use my working directory - includes compiled modules -  [http://www.scratchpost.org/Nokia_N8x0/Modem/ Nokia N8x0 Modem]) for the Nokia N8x0.
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# Run the Option mode switch application.<pre>./rezero /dev/sg0</pre>
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* compile the [http://www.pharscape.org/component/option,com_forum/Itemid,68/page,viewtopic/t,425/ Rezero] Option mode switch application.
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# Load the "HSO" kernel module.<pre>insmod hso.ko</pre>
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* run the Option mode switch application: "./rezero /dev/sg0".
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# Edit the <code>connect.sh</code> script (from HSO) to actually ''do'' the changes in the routing table.
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* load the "HSO" kernel module: "insmod hso.ko".
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# Run the <code>connect.sh</code> script.<pre>./connect.sh up</pre>
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* edit the "connect.sh" script (from HSO) to actually '''do''' the changes in the routing table.
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# or use debian packages there: [[http://scratchpost.dreamhosters.com/software/Nokia/N8x0/Modem/DEB/]].
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* run the "connect.sh" script: "./connect.sh up".
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# Enjoy!
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* enjoy.
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== TODO ==
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== Unused ==
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* Alternative (generic?) mode switch program http://www.draisberghof.de/usb_modeswitch/
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* Use the udev script to automate the loading when the device is plugged (both for "rezero" and for "HSO").
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= TODO =
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* create a ready-to-use Debian package.
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* use the udev script to automate the loading when the device is plugged (both for "rezero" and for "HSO").
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[[Category:Users]]
[[Category:Connectivity]]
[[Category:Connectivity]]
[[Category:Cellular]]
[[Category:Cellular]]
[[Category:USB]]
[[Category:USB]]
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[[Category:Power users]]
 
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[[Category:Diablo]]
 

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