Search found 5 matches

by Gizmoomzig
Thu Sep 22, 2011 3:59 pm
Forum: V-USB
Topic: USB communication problems with ATmega8 (4nes4snes-adapter)
Replies: 11
Views: 8974

Re: USB communication problems with ATmega8 (4nes4snes-adapter)

Sorry for not posting for a long time. Lots of private stuff... to newhero: On the chip itself is ATMEL 1051 ATMEGA8-16PU written. Or is there a different chip model number? I bought the chip on 12.07.2011 so it should not be too old. Normally, it should work with that chip model. to Tim_BandTech.Co...
by Gizmoomzig
Thu Aug 11, 2011 10:56 pm
Forum: V-USB
Topic: USB communication problems with ATmega8 (4nes4snes-adapter)
Replies: 11
Views: 8974

Re: USB communication problems with ATmega8 (4nes4snes-adapter)

The crystal is 12 MHz on the dot. If I choose a crystal with 16 MHz, wouldnt it too have deviations? A higher clock than 16 MHz is not supported by the ATmega8-16, is there a way to slow a faster clock down to 12 MHz?
by Gizmoomzig
Mon Aug 08, 2011 9:17 pm
Forum: V-USB
Topic: USB communication problems with ATmega8 (4nes4snes-adapter)
Replies: 11
Views: 8974

Re: USB communication problems with ATmega8 (4nes4snes-adapter)

I started with the exact hex-file but it too does not work. The parts are exactly the same. In the documentation it says C2, C3: 27 pf capacitors. If the crystal datasheet recommends another value, use it instead." but the datasheet of the Crystal refers to a load capacitance ranging from 5pF ~...
by Gizmoomzig
Fri Aug 05, 2011 1:09 am
Forum: V-USB
Topic: USB communication problems with ATmega8 (4nes4snes-adapter)
Replies: 11
Views: 8974

Re: USB communication problems with ATmega8 (4nes4snes-adapter)

Thanks for the reply. Im normally using Linux but also have a Windows system at hand to try it out. usbLyzer tells me that the enumeration of the device failed. PnP properties: Description: Unbekanntes Gerät Instance Status: 01806000h DN_DISABLEABLE DN_REMOVABLE DN_NT_ENUMERATOR DN_NT_DRIVER Instanc...
by Gizmoomzig
Wed Aug 03, 2011 11:41 pm
Forum: V-USB
Topic: USB communication problems with ATmega8 (4nes4snes-adapter)
Replies: 11
Views: 8974

USB communication problems with ATmega8 (4nes4snes-adapter)

Hi, I am new to microcontrollers and USB programming and I encountered a problem on my first project. I was rebuilding the 4nes4snes adapter from http://www.raphnet.net/electronique/4nes4snes/index_en.php and everything went fine until I connected the board with the USB port on my PC. As there was n...