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-   -   N800 USB Host Mode Experiment (https://talk.maemo.org/showthread.php?t=4177)

sjgadsby 2007-11-28 14:18

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by Mara (Post 101346)
When I read some internal release notes documents describing the USB operation in OS2008, I get this understanding that the role switching should work automagically... please try it?

Done. I manually set the mode of my N800 back to "b_idle" and then plugged my keyboard in again. The mode automatically updated to "a_host", and the keyboard worked (though still with all the "Device not supported" messages).

Thanks, Mara!

EDIT: Initially, I thought the adapter I have was wired correctly to allow automatic switching between host and gadget modes. However, that switch is not happening consistently. Nuts.

fanoush 2007-11-28 14:50

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by Mara (Post 101346)
EDIT: When I read some internal release notes documents describing the USB operation in OS2008, I get this understanding that the role switching should work automagically... please try it?

AFAIK the role switching works automagically only with proper cable. It must be switched manually when using normal USB cable that comes with the tablet and female to female adapter. see http://muru.com/linux/n800-usb-host/

Tirithen 2007-11-28 14:53

Re: N800 USB Host Mode Experiment
 
I got my wireless USB keyboard working but it dropped a lot of characters until I added 5v from 4AA batteries. My mouse that is connected to the same reciver wrote different characters like qweui, mabye it writing qwertyui in that order. Is would it now be possible to change the language of the keyboard so that special characters works...
Would it be possible t oconnect more than one device with a USB hub...

frethop 2007-11-28 15:05

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by Tirithen (Post 101366)
Would it be possible t oconnect more than one device with a USB hub...

And the answer to that is YES. I have a keyboard and two USB flash drives hooked up and things are working! Wow!

I get "USB hub not supported" and "Unable to connect. Device not supported." error messages, but everything works.

-- Mike

Tirithen 2007-11-28 15:15

Re: N800 USB Host Mode Experiment
 
Wow, been waiting for this a log time. I get the errormessages to. I've now connected to my H320 hd mp3 player and are playing mp3's from it on the tablet. When the clock apps alarm on the tablet came up it made the media player to stop playing and aftervards the sound sounds awful seemes like it boosted the volume and it won't help turning it down in the volume control.. but restarting it solved it.

bukubuku 2007-11-28 15:27

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by frethop (Post 101375)
And the answer to that is YES. I have a keyboard and two USB flash drives hooked up and things are working! Wow!

I get "USB hub not supported" and "Unable to connect. Device not supported." error messages, but everything works.

-- Mike

Need extra power supply for the USB Hub or not?

frethop 2007-11-28 15:38

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by bukubuku (Post 101388)
Need extra power supply for the USB Hub or not?

Short answer: No.

Longer answer: I have a powered hub with a power indicator light. It worked with power. WHen I disconnected the power and connected the N800, the power light went on. The hub worked also without power.

-- Mike

bukubuku 2007-11-28 15:47

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by frethop (Post 101393)
Short answer: No.

Longer answer: I have a powered hub with a power indicator light. It worked with power. WHen I disconnected the power and connected the N800, the power light went on. The hub worked also without power.

-- Mike

Woo~So we just need to flash OS2008,hook up the usb device,then it works?SO GREAT:)

Benson 2007-11-28 16:03

Re: N800 USB Host Mode Experiment
 
Quote:

Originally Posted by fanoush (Post 101365)
AFAIK the role switching works automagically only with proper cable. It must be switched manually when using normal USB cable that comes with the tablet and female to female adapter. see http://muru.com/linux/n800-usb-host/

Beat me to it!
Yes, that's how it should work. Can't wait to get an adaptor and start using thumb-drive with N800.

Let's see -- what other USB devices do/might/should work?
  • Mass storage - works
  • HID - keyboards work, mice have same troubles as BT mice
  • CD/DVDs - has no drivers
  • Network adapters (Will power be an issue for some of these?)
    • Ethernet - Helpful, but do they work?
    • 802.11b/g - Redundant, probably less range
    • 802.11a,n - Could be helpful, do they work?
    • BT - Redundant, unless you need longer range... Then power draw probably kills you.
  • Serial adapters (including USB interface on HP49G+) - Probably no drivers?
  • Audio (USB speakers) - Not persuaded of utility, but might work. Probably no drivers?
Anything else?

Could people who have this working try any of those devices they have laying about and see if they work?
Since we're running a modular kernel, drivers should be simple to add for, e.g., usb-serial, or various network adapters. More complications arise in pursuit of, say, DVD burning, requiring a variety of drivers and userland tools.

ShyBoy 2007-11-28 16:15

Re: N800 USB Host Mode Experiment
 
I wish if I can use my LAPTOP USB GPS receiver with N800 :-)


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