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I'm using a FTDI 2232H chip in synchronous FIFO mode to communicate over USB to an altera Cyclone II FPGA. I've developed a program that will communicate with the device, using libftdi and libusb, running from a TI AM3517 arm processor with Debian installed.

I'm not to sure how to have configure the debian OS to start the my communication process on detection(ie. hotplug) of the FTDI 2232H usb device.

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  • in case anyone was wondering heres the udev rule I used to implement this. I created /etc/udev/rules.d/99-FTDI2232H-usb.rules I here i'm running my program /opt/prog and passing in the serial manufacture and product information as arguments ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="0403", ATTR{idProduct}=="6010", RUN+="/opt/prog %s{serial} %s{manufacturer} %s{product}", ${serial}, $ATTR{manufacturer}, $ATTRS{product}
    – richmb
    Jun 14, 2011 at 20:24

1 Answer 1

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You can use halevt (or its predecessor ivman on earlier kernels) to detect and execute actions on hotplug events.

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  • Thank you for the quick response. I've been doing to further research and just learned about udev. It seems that both halevt and udev would be able to accomplish this task. Any incite on to which one would be more suitable?
    – richmb
    May 6, 2011 at 14:24
  • halevt works for me (detect when audio CD is inserted on a headless media server) but udev appears to be the way forward as HAL is deprecated. You've reached the end of my knowledge on this ;)
    – sudocode
    May 6, 2011 at 14:39

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