vogelchr at vogel.cx
Sat Jan 8 12:26:23 UTC 2011
> usb 4-1: usbfs: interface 0 claimed by cdc_acm while 'sam7' sets config
sam7 can talk to the device either by using libusb, or by utilizing the
serial port of the Linux kernel.
You have compiled sam7 to use usb directly, so you have to rmmod usbserial
because they will block your attempts to talk to the device via libusb.
is the error message you've seen in your kernel log.
(check io_libusb.c (usb) and io_posix.c (emulated serial port) in the
sam7utils source code,
it unfortunately provides very little feedback if things don't work out
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