I would echo David's original question, is there any reason why the OTG mode could not be used to switch from master to slave mode, driven from a command or voltage sensing on the 770. After all as has been noted elsewhere the 770 needs 5volts supply fed to it when in master mode so something in the 770 is already sensing this. Or put another way why do we have to use flasher to switch USB modes? Bob On Tuesday 11 April 2006 17:37, Larry Battraw wrote: > On 4/11/06, David D. Hagood <wowbagger at sktc.net> wrote: > > Having switched my Nokia into USB master mode, and having hacked up a > > hub to provide power to the Nokia so that it will "see" the connection, > > I can now connect a USB storage device and the Nokia will scan it (I > > have a USB analyzer that shows me the traffic between the two). > > > > However, since the Nokia-supplied kernel does not have the USB storage > > module in place, it does nothing with the device - it cannot mount it as > > there is no block device created. > > Actually, usb-storage is built into the kernel, so there's no need > for a module. If you're plugging things in and no device is being > created there are other issues causing it. > > > On a related note - the OMAP1710 is a USB-on-the-Go device - it can > > switch roles and supply power. I wonder if the problem is that the > > kernel simply does not support the OtG mode, and when switched into > > master mode does not activate the power to the port, or did Nokia fail > > to hook up that hardware in the 770's implementation? > > As someone else mentioned, trying to source 5V for whatever random > device that might be plugged in is a bad idea. Only the smallest > devices like keyboards/mice would really work well and it would all > have an impact on the battery life. This way the onus is on an > external supply to provide all the power external hard drives, network > adapters, cd burners, and etc. might need :-) I have a powered hub > with a SD card adapter, network adapter, keyboard, and 30G 2.5" HD > connected to it and they all work great. The biggest headache was > building the kernel module for the (10/100) network adapter. > > Larry > _______________________________________________ > maemo-users mailing list > maemo-users at maemo.org > https://maemo.org/mailman/listinfo/maemo-users -- V +44 (0) 1296 747667 F +44 (0) 1296 747557 C +44 (0) 7860 406093 Diamond Consulting Services Ltd Dinton Aylesbury Bucks, HP17 8UG England
