AVR DOPER problem

MiRA · Post by **MiRA** » Sun Mar 18, 2007 12:09 pm

Hi, i have built AVR Doper, upload main.hex, set fuses and when i connect them to pc i get:

usb 2-4: new low speed USB device using ohci_hcd and address 26
usb 2-4: device descriptor read/all, error 0
usb 2-4: new low speed USB device using ohci_hcd and address 27
usb 2-4: device descriptor read/64, error -71
usb 2-4: device descriptor read/64, error -71
usb 2-4: new low speed USB device using ohci_hcd and address 28
usb 2-4: device descriptor read/8, error -110
usb 2-4: device descriptor read/8, error -110
usb 2-4: new low speed USB device using ohci_hcd and address 29
usb 2-4: device descriptor read/8, error -110
usb 2-4: device descriptor read/8, error -110

I dont know where is the problem.
Can you help me ? Please...

Post by **christian** » Tue Mar 20, 2007 7:43 pm

Looks like a very fundamental problem to me. Have you flashed the fuses? Have you connected the zener diodes at D+ and D-? And have you compiled for the right device (ATMega8 vs. ATMega88)?

The operating system is Linux, right?

MiRA · Post by **MiRA** » Wed Mar 21, 2007 1:19 am

I used precompiled file main.hex. Is it compiled for ATMega8?

My operating system is Linux (Ubuntu Edgy Eft)

Post by **christian** » Wed Mar 21, 2007 12:06 pm

I've checked the latest version (2007-02-01). The hex file shipped with it was compiled for the Mega8.

The remaining checks are:

Make sure that the fuse values are correct.
Make sure that you have the zener diodes at D+ and D-.

MiRA · Post by **MiRA** » Mon Apr 09, 2007 2:07 pm

I fix the problem!!

I use Atmega8-8 instead of Atmega8-16 :oops:

Sorry for dumb questions...