John Summerfield wrote: > Robert L Cochran wrote: >> I'm having trouble trying to access a USB device under Fedora 7. I think >> udev might be my problem. >> >> When I try using avrdude with this line: >> >> [rlc@bobcp4 atmega644]$ avrdude -c usbtiny -p m644 -P usb -U >> flash:w:blink_pb3.hex >> >> I get this error message: >> >> avrdude: Error: Could not find USBtiny device (0x1781/0xc9f) > Try with a leading zero. .../0x0c9f > I got frustrated and tried this on Microsoft Windows XP...I have this working on XP -- avrdude definitely detects the programmer device and then it is able to initialize the target microcontroller through the programmer. On Fedora 7, it cannot detect the programmer at all, and I think that is either because there is a udev rules problem, or avrdude was built without libusb support. Maybe I should get the source rpm and check into that. I will try to put up a web page with photos of the programmer connected to a breadboard with the target mcu (an ATMega644) and a test circuit to play with...specifically an LED connected to pin PB3 that I want to blink. Thanks Bob >
