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
This is what lsusb says:
[root@bobcp4 ~]# lsusb
Bus 001 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 004 Device 006: ID 0e6a:6001 Megawin Technology Co., Ltd
Bus 004 Device 005: ID 0424:2228 Standard Microsystems Corp.
Bus 004 Device 004: ID 0424:2602 Standard Microsystems Corp.
Bus 004 Device 002: ID 0424:2502 Standard Microsystems Corp.
Bus 004 Device 001: ID 0000:0000
Bus 002 Device 002: ID 1781:0c9f
Bus 002 Device 001: ID 0000:0000
And the device is described here:
http://ladyada.net/make/usbtinyisp/
(I bought the kit and built it.)
I added a rule named '98-usbtiny-rules' to /etc/udev/rules.d which
contains this line
*SUBSYSTEM=="usb", SYSFS{idVendor}=="1781", SYSFS{idProduct}=="0c9f",
GROUP="users", MODE="0660"
But avrdude still can't seem to find the programmer. Am I right in
believing that I need a udev rule, and if so, does the above rule look
correct for what I want to do? Or am I missing another issue?
Thanks
Bob Cochran
Greenbelt, Maryland, USA
*
--
Cheers
John
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