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-   -   USB 2.0 OTG on N810 (https://talk.maemo.org/showthread.php?t=10732)

slip 2007-10-19 18:48

USB 2.0 OTG on N810
 
What exactly does it mean that the N810 has USB 2.0 OTG ("On-the-go")?

Will that mean that has USB host capability? Can you plug a usb keyboard into it, for example? What about a USB flash drive?

Also, do you think it is possible that OS2008 will bring OTG capability to the N800, or is it a hardware difference?

(I don't have a NIT at this time, but I'm considering the N800 now that the price has dropped so much. I liked the idea of the sliding keyboard, but can't see spending almost $500 on the new device. I rarely drive, so the GPS doesn't add value to me, though I can understand its appeal to many people)

aleksandyr 2007-10-19 19:37

Re: USB 2.0 OTG on N810
 
USB-OTG devices can function in a variant of host mode that, in fact, covers keyboards and flash drives.

There are patches to put OTG functionality on your N800 available right now, but it's a difficult process and doesn't produce great results (or didn't a few months ago when I did it. :)

anidel 2007-10-19 19:43

Re: USB 2.0 OTG on N810
 
May be those patches are "incorporated" in the upcoming IT2008 firmware?

Mara 2007-10-19 19:48

Re: USB 2.0 OTG on N810
 
Quote:

Originally Posted by aleksandyr (Post 84470)
USB-OTG devices can function in a variant of host mode that, in fact, covers keyboards and flash drives.

There are patches to put OTG functionality on your N800 available right now, but it's a difficult process and doesn't produce great results (or didn't a few months ago when I did it. :)

Could you tell a simple way how could I verify if this is supported in N800 having OS2008 firmware?

aleksandyr 2007-10-19 19:58

Re: USB 2.0 OTG on N810
 
anidel: That's what I'm betting on. It's actually in the mainline kernel, but it was backported for the N800. See http://www.muru.com/linux/n800-usb-host/

Mara: From http://www.muru.com/linux/n800-usb-host/ --- assuming it's using the same structure --- see if /sys/devices/platform/musb_hdrc/mode
exists on the device (or the musb_hdrc directory, probably.) To actually test this, you need a USB-OTG cable (again, check that page for the details) and those are fairly rare in the wild.

Of course, the easiest way to test this would be to send me a copy of N800 OS2008, since I've already built one of those cables. Heck, I'll even get real Java working (yay GTK 2.10!) too. What a deal, eh? :D

hordeman 2007-10-19 21:18

Re: USB 2.0 OTG on N810
 
Quote:

Originally Posted by aleksandyr (Post 84485)
To actually test this, you need a USB-OTG cable (again, check that page for the details) and those are fairly rare in the wild.

Is this one of those types of cables?
http://cgi.ebay.com/USB-2-0-OTG-Cabl...QQcmdZViewItem

Mara 2007-10-19 21:35

Re: USB 2.0 OTG on N810
 
Quote:

Originally Posted by aleksandyr (Post 84485)
anidel: That's what I'm betting on. It's actually in the mainline kernel, but it was backported for the N800. See http://www.muru.com/linux/n800-usb-host/

Mara: From http://www.muru.com/linux/n800-usb-host/ --- assuming it's using the same structure --- see if /sys/devices/platform/musb_hdrc/mode
exists on the device (or the musb_hdrc directory, probably.) To actually test this, you need a USB-OTG cable (again, check that page for the details) and those are fairly rare in the wild.

Of course, the easiest way to test this would be to send me a copy of N800 OS2008, since I've already built one of those cables. Heck, I'll even get real Java working (yay GTK 2.10!) too. What a deal, eh? :D

Yup... the directory (and file "mode") does exist... :cool:

Ar-ras 2007-10-19 22:20

Re: USB 2.0 OTG on N810
 
What about the 5Volt USB power supply?

johnkzin 2007-10-19 22:26

Re: USB 2.0 OTG on N810
 
What does this mean for keyboard support? Does the keyboard need to have some form of power for itself? (and if they keyboard is a standard USB keyboard, what needs to be done to make it work with OTG?)

I have this thumb keyboard, see... and I wanna use it with my N800 ;-)

Capt'n Corrupt 2007-10-21 00:11

Re: USB 2.0 OTG on N810
 
Well if N810 support USB OTG, then this is another huge plus that may offset the lack of two SD slots. Take a look at the link below:

http://www.flash-memory-store.com/ap...otg-drive.html

For around $200 US you can buy external storage for everyones favorite tablet that should keep you satiated with hours of movies, libraries of literature, and days of music. This unit has its own power supply, so I'm guessing that it will not largely impact the units running time. This should be a nice alternative to the upcoming external bluetooth drives.

I believe Nokia made some very smart design decisions with the N810.


When the wind blows northwards, I go north...

}:^)~
YARR!!

El Capitan


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