Am 09.12.2013 22:11, schrieb Arne Raaen:
> 
> The problem arose (probably) at a brief power failure, i.e. an abrupt 
> shutdown followed by restart once power returned.
>
Ok, given all the other suggestions this should mean the FTDI or LINKs
hardware is failing.

Anyway, try rmmoding the hcd modules. That way the USB is de-powered as
long the board supports controlling the USB power by software. You can
also try with

/sys/bus/usb/devices/*/power/level

to change the power line for each port separately. But some boards have
USB-power hard-wired to +5V_STB, obviously that won't work with these
boards. In that unlucky case you can use an intermediate hub and control
this hub's power lines. That said: BEWARE FOR CRAPPY USB HUBS! Most of
them are. Find a decent one or you'll get even more problems.


Kind regards

        Jan

------------------------------------------------------------------------------
Sponsored by Intel(R) XDK 
Develop, test and display web and hybrid apps with a single code base.
Download it for free now!
http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk
_______________________________________________
Owfs-developers mailing list
Owfs-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/owfs-developers

Reply via email to