atmega168v - avrusb

General discussions about V-USB, our firmware-only implementation of a low speed USB device on Atmel's AVR microcontrollers
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arsher
Posts: 1
Joined: Fri Sep 12, 2008 8:02 pm

atmega168v - avrusb

Post by arsher » Fri Sep 12, 2008 8:25 pm

Hi!

I've just started to playing around with uC-s, and i got some pieces of atmega168v (low voltage, 10mhz top version ), so i'm trying to make work the avrusb example projects on one of these chips using a 12mhz external crystal and i belive fuse bits are set correctly (actually i'm not sure it should even work at that freq, should it?). The problem is, when i'm connecting the usb cable to my pc, windows says it's not recognizing the connected usb device and i should reconnect or change it. Unfortunately i don't have the equipment to decide if the uC works correctly with the 12mhz crystal so i don'T even know where to find solutions....so if you have any idea whats the problem pls help me....

Thank you
Greets
Arsher

christian
Objective Development
Objective Development
Posts: 1443
Joined: Thu Nov 09, 2006 11:46 am

Post by christian » Wed Sep 17, 2008 5:11 pm

You can verify if the uC works correctly if you upload a program which toggles a pin every second and connect an LED to the pin. Then take a stopwatch and count...

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