maemo.org - Talk - View Single Post - N900 will not allow USB OTG!

scaler	2009-11-15 , 23:38
Posts: 154 \| Thanked: 73 times \| Joined on Jan 2009 @ Toronto	#497

Originally Posted by sarahn

FWIW I literally cut power between the n800 and a powered hub. A keyboard connected to the powered hub worked with the n800. My laptop found the keyboard but got confused and kept disconnecting / reconnecting the keyboard.

If the USB charging is the only issue, that may be a workaround. I would not be surprised if there were also USB driver issues.

If you try this remember to only cut power, not ground. There are pinouts / descriptions of the different wire colors elsewhere online.

Could you give more detail of your wiring? Specifically, is the ID pin grounded? If so, you have switched the 800 into host mode. One of the problems with the N900 is that host mode is not achieved by grounding the ID pin. N900 lacks internal wiring to register the ID signal, according to reports from Nokia.

Even before that became known, qole had tested (1) grounding of the ID pin and (2) "echo host" command. Neither put the N900 into host mode.

USB charging would be a nuisance for long periods of host operation, but it is a minor problem. The major problem is to find a way of putting the N900 into host mode in the first place.

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