On 9/13/07, Frédéric Mantegazza <[EMAIL PROTECTED]> wrote: > Hello, > > I'm using a USB DIY screen calibration sensor[1] with ArgyllCMS, a free > calibration software[2]. > > The dialog with this sensor is very easy: just read/write like on serial > bus. I made a python script for tests purpose, and it works fine > using /dev/ttyACM0 (provided by cdc-acm driver). > > But in argyllcms, the developper used libusb, to be cross-plateform. And it > does not work for me (it works on developper's computer). Here is what I > get: > > Setting up the instrument > hcfr: About to init coms > hcfr: About to init USB > icoms: About to set usb port characteristics > icoms: About to open the USB port > icoms: USB port needs opening > icoms: About to open USB port 'usb:/bus0/dev92 (Colorimtre HCFR)' > icoms: USB port is now open > icoms: Clearing any USB errors > icoms: usb port characteristics set ok > > hcfr: Doing break > Break done, ICOM err 0x0 > hcfr: About to init instrument > hcfr: About to read firmware version > > icoms: Write_Read called with '\377' > icoms: About to write '\377' ICOM err 0x0 > icoms: Read called > icoms: About to return read '' ICOM err 0x2000 > icoms: Write_Read Write failed - returning 0x2000 > hcfr_command failed > hcfr: Error with getting or version of firmware > The instrument can be removed from the screen. > icoms: delete called > icoms: closing port > usb_close_port() called > usb port has been released and closed > dispcal: Error - dispread failed with 'Instrument Access Failed' > > 0x2000 is a timeout error. I tried to increase the value (up to 1 hour!) > without success. > > At the same time, in the /var/log/messages, I can read: > > ttyS3: LSR safety check engaged! >
This might be because the application failed to detach the kernel cdc-acm driver. Try the following: http://libusb.sourceforge.net/doc/ref.nonportable.html Regards, Xiaofan ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
