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-   -   [Announce] USB hostmode beta release (https://talk.maemo.org/showthread.php?t=65232)

joerg_rw 2010-11-10 23:44

Re: [Announce] USB hostmode beta release
 
Quote:

Originally Posted by titan (Post 869784)
kernel-power specifies Provides: kernel-feature-usbhost
I suggest to add this to your hostmode kernel and let hostmode-gui depend on it this feature.

I'll integrate Paul's patch in the next upload.

Very nice. Thanks a lot! Looks like a proper solution for pkg installation time.
For runtime, and to tell apart different versions of hostmode API, the hostmode-version= patch is still recommended. Mohammad's GUI will test for that (at least I hope I talked him into doing so :-D)

cheers
jOERG

Matan 2010-11-10 23:58

Re: [Announce] USB hostmode beta release
 
Also see this:

http://cgi.ebay.com/Micro-USB-Host-O...item3a6029aec2

I think it should exert less stress on the flakey USB port.

aligatro 2010-11-11 00:13

Re: [Announce] USB hostmode beta release
 
1 Attachment(s)
pfff, who needs those adapters from the store. When you can get this beauty. </sarcasm>
I had an old motherboard lying around, so I just un-soldered the double-connector and joined parallel connections.

woody14619 2010-11-11 01:33

Re: [Announce] USB hostmode beta release
 
Quote:

Originally Posted by Psycho (Post 869775)
guys is this the one i need ??

I picked up this one a while ago, hoping this project would be fruitful some time. :) I can tell you with great certainty that it works, as I've used it already to connect up a thumb drive. It doesn't stress the connector much with light-weight things like thumb drives. Not bad for under $2 shipped (though it will take a couple weeks, unless you happen to live in/near China. :) )

Great job on this to everyone that's worked on this, both directly and indirectly! This was in the top 5 for things I really wanted the N900 to do, and the last one to show up. But it was so worth the wait!

aligatro 2010-11-11 02:04

Re: [Announce] USB hostmode beta release
 
Question to the creators of this mod: Is it possible to turn on host-mode, but without 5V, so, for example, to be able to inject power from wallcharger?

joshv06 2010-11-11 02:23

Re: [Announce] USB hostmode beta release
 
Hello, I have a question, I have Titan's version 44 power kernel installed. How would I go about getting the hostmode-gui running? When I try to install it from terminal, it has other custom kernel and kernel-flasher dependencies. Would this mess up my already installed Titan's kernel?

Thanks

IzzehO 2010-11-11 02:31

Re: [Announce] USB hostmode beta release
 
It would. You'll need to wait till they remove the dependency (or get the hostmode-gui.deb on its own, which he posted a few pages back).

joerg_rw 2010-11-11 02:56

Re: [Announce] USB hostmode beta release
 
Quote:

Originally Posted by aligatro (Post 869857)
Question to the creators of this mod: Is it possible to turn on host-mode, but without 5V, so, for example, to be able to inject power from wallcharger?

Please see http://talk.maemo.org/showpost.php?p=866309&postcount=9 the postscriptum

I have the annoying habit to frequently edit forum posts to add new facts and details, rather than quoting the whole original post starting the topic, just to add a few words. So an occasional re-read of the whole thread might be worth it. This also holds true for drive-by askers who think it's easier to push out their question rather than going through the whole thread to see if it's maybe got answered previously. Those random duplicate questions just add to the length of the thread for nothing, thus making it even more annoying for others to read up from beginning.

/j

IzzehO 2010-11-11 03:16

Re: [Announce] USB hostmode beta release
 
Quote:

Originally Posted by joerg_rw (Post 869877)

I've had some mild success with Y cables for external power, but the thought of leakage into the N900 while at 5V doesn't sound like it'll end well. Just how easily could we burn out the chip on the N900 driving in current while VBUS is at 5V (and BME is disabled)?

I've found the phone WILL die if you still have a powered peripheral connected after turning off VBUS, which is not a pleasant sign in itself.

joerg_rw 2010-11-11 03:23

Re: [Announce] USB hostmode beta release
 
Quote:

Originally Posted by IzzehO (Post 869888)
I've had some mild success with Y cables for external power, but the thought of leakage into the N900 while at 5V doesn't sound like it'll end well. Just how easily could we burn out the chip on the N900 driving in current while VBUS is at 5V (and BME is disabled)?

I've found the phone WILL die if you still have a powered peripheral connected after turning off VBUS, which is not a pleasant sign in itself.

hostmode is *safe* from a hw point of view. This includes applying 5V externally at any random point in time, as well as overloading or even shortcircuit of internal 5V supply aka vboost.
It's just the whole musb-core gets confused with vbus applied when it shouldn't, so we have some issues with switching speeds, entering/leaving hostmode, *not* entering peripheral mode, etc. Also, as we need to stop bme, there's not charging during hostmode for now. All this doesn't mean you could break anything - you CAN NOT, as long as you're not using overvoltaged external PSU or other obviously rogue evil crap

I said "enjoy hostmode" - I meant it like that :-) Don't worry!
/j


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