On Sat, 2002-09-28 at 05:52, [EMAIL PROTECTED] wrote: > i'm trying to use a homebrew USB device (based on FTIs chip FT245). > Device should be recognised by the kernel from 2.4.18. I get this: > [dmesg] > hub.c: USB new device connect on bus3/1, assigned device number 2 > usb_control/bulk_msg: timeout > usb-uhci.c: interrupt, status 2, frame# 1008 > usb.c: USB device not responding, giving up (error=-84) > > i have these modules loaded regarding USB: > usb-uhci 24452 0 (unused) > usbcore 73216 1 [usb-uhci] > > By connecting other USB devices everything works. OTOH, by connecting > my USB device to the win98, xp host the device gets detected!
A hardware defect would be likely. Check that the chip gets powered up instantly, when you connect the USB power. Also, check that you followed all the design requirements that FTDI recommends. Finally, you might want to send me the schematic drawing of your device for looking at (either in Eagle CAD format, or just as pictures). These things may influence how soon the chip starts responding to USB host's requests, so tell me how fast the chip gets recognized by XP. Windows is known to be very patient with slow devices. Thanks, Dmitri P.S. I used FTDI's FT8U245AM in one of my designs, but I can't recall how it worked with Linux (the project was Windows only and I had too little time - as usual - for experiments.)
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