Virtual USB-port for AVR

mmarlette · Joined: 30 Nov 2007 Posts: 303 Location: Delano, MN

Have the up most respect for people that are multi-lingual. I am not.

I tried running this through a translator but not working. I tried Google's.

So is there an English translation of the Klava_primer.bas or a procedure to convert this to English?

Seems to have multiple languages in that .bas but Const_swusb-includes.bas is very English.

TIA,

Mark

AndersL · Joined: 25 Jan 2010 Posts: 89 Location: Kragerø,Norway

Hi mmarlette,
try to open the bas file in eg ms words with encoding cyrilic(windows)
The russian letters are now visible and a copy paste into google translate
will give a reasonable translate.
Notice that during translate, som characters are "translated" in such a way that the code needs to be modified before compile.

See attached file.

atlab · Joined: 11 Jul 2009 Posts: 1 Location: Russia

Translated from russian to english with google.

P.S. translations: english -> russian -> english Very Happy

mmarlette · Joined: 30 Nov 2007 Posts: 303 Location: Delano, MN

Anders,

Perfect process, works like a champ!

Just doing the comments one at a time as needed.

Thanks for the GREAT tip!

Regards,

Mark

mmarlette · Joined: 30 Nov 2007 Posts: 303 Location: Delano, MN

Anders and Atlab,

Now after my post I see they are done! Smile

Even better.

Man this is some good stuff!

Thanks again, going to study.......

Mark

Alex20q90 · Joined: 24 Sep 2007 Posts: 89

Hi Radan,

thats a great project with your code!

Question:

Is that able to make an USB2Serial-Converter?

I need some serial strings from PC for my PWM-Light-Mod. At Time, i use an USB2Serial -> ATMega8. I would like to integrate that in the Mega8 with you code. I only need 5 Bytes to send to the Mega8. How i have to modify your code to get the sendet 5 bytes?

I dont need any viritual com port!

Best regards
Alex

ex4 · Joined: 13 Jan 2006 Posts: 1064 Location: indonesia

Mrshilov · Joined: 24 Jan 2009 Posts: 314 Location: Russia

ollopa · Joined: 03 Sep 2007 Posts: 233 Location: California

Mrshilov,

Good news is that I found a job! I had to move some distance into a temporary apartment and I will be moving into a larger place soon. What's really exciting is that I now have access to a commercial, high-end USB analyzer though my job. I have many, many commitments now, so time is an issue, but I'm in a much better position to do USB work.

ex4,
The maximum packet size for low-speed USB 1.1 is 8 bytes. If you have more to send, then you must break it into 8-byte transactions. Also, according to the USB specifications, if you send an 8-byte packet then the host controller will be expecting more data to follow. In order to send n*8 bytes, you must finish the transaction by sending a 0byte data packet. I believe I checked for this in my example code.

Petr_ · Joined: 24 Mar 2010 Posts: 66

Mr. Ollopa.
What to do with the freeze device when the package is more than one byte?
The problem described here http://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewtopic&t=7537&start=165
I even wrote a special PC program that records the time the error occurred.
One byte in the package greatly reduces the already small data rate.
How to fix it so that you can transfer from computer to device any number of bytes, from 1 to 8 in a package?

ollopa · Joined: 03 Sep 2007 Posts: 233 Location: California

Peter_,

I will try to verify the problem you found. I may have already fixed it in my local copy of the library. I think we may be having trouble communicating our ideas to one another. Hopefully we can communicate in code Smile

The USB code can already send and receive packets from size 0 to size 8. This happens several times during enumeration of the USB device. The "USB packet" and the "HID report" are different things. It looks to me like your HID report is 8 bytes long ( size[8] (in bits), count[8] ). That should be broken into 2 USB packets: 1 8-byte packets and one 0-length packet. I have to examine your code further but from the screenshots it looks like there may be some confusion about how this works.

** edited to retract my miscalculation of the report size **

ollopa · Joined: 03 Sep 2007 Posts: 233 Location: California

Peter_,

I think this is the problem:

ollopa · Joined: 03 Sep 2007 Posts: 233 Location: California

Seems to be working better now.

I have send errors when using random data. I will investigate further...

Mrshilov · Joined: 24 Jan 2009 Posts: 314 Location: Russia

Mr. Ollopa, any changes?

ollopa · Joined: 03 Sep 2007 Posts: 233 Location: California

I'm wondering if Petr_ can confirm my results...

Also under the latest compiler I'm having some issues with 12MHz but not 15MHz. I need to see if the asm has changed somewhere critical.