Objective Development Forums

Re: Mass Storage class over V-USB

2011-05-03T20:11:09+02:00

decided to start a new topic

Statistics: Posted by ulao — Tue May 03, 2011 8:11 pm

Re: Mass Storage class over V-USB

2011-05-06T16:48:19+02:00

Ah error correction I got you. Thx for the info.

Statistics: Posted by ulao — Tue May 03, 2011 4:24 pm

Re: Mass Storage class over V-USB

2011-05-03T14:38:38+02:00

No, that's not a descriptor. The table contains pre-computed CRC sum values for the CRC checksum used.

Statistics: Posted by christian — Tue May 03, 2011 2:38 pm

Re: Mass Storage class over V-USB

2011-05-03T14:36:11+02:00

Thx christian. I had a lot of luck just analyzing the code its self. Its quite straight forward what he is doing here. I never did find a descriptor but I can more then likely get that with usbLyzer. I see what you mean by a look up table but was not sure what the data in the table is for, it that a descriptor?

Statistics: Posted by ulao — Tue May 03, 2011 2:36 pm

Re: Mass Storage class over V-USB

2011-05-03T11:18:47+02:00

I have not looked at the code so far, but I can probably answer to questions:
(1) As far as I know, WinAVR supports C++. Simply pass it a .cpp file.
(2) The .balign 256 usbCrcTableLow: stuff is for a table-driven (and thus faster) CRC algorithm.

Statistics: Posted by christian — Tue May 03, 2011 11:18 am

Re: Mass Storage class over V-USB

2011-05-03T02:25:09+02:00

Can anyone help me on this source? Saimon has not done this in the same means most examples are. I see he has a few cpp files, but I dont have a cpp avr compiler. I only have winavr. I'm sure I could convert all of this to c as I know both languages well but I was hopping I'm just over looking something simple here.

For example, where is the heck is the descriptor? This is an example of a usb mass storage hid device no? That is to say, if I flash and compile this and plug it in to the usb port it shows up as a mass storage device? If so, then a descriptor is required. I sure hope its not this .balign 256 usbCrcTableLow: ASM stuff.

Statistics: Posted by ulao — Tue May 03, 2011 2:25 am

Re: Mass Storage class over V-USB

2011-03-03T08:55:58+02:00

Second try!) Fully worked project on mega8 and mmc card. If anyone intresting, can show my device photo and video.
http://depositfiles.com/files/yh1xo40wh

Statistics: Posted by lleeloo — Thu Mar 03, 2011 8:55 am

Re: Mass Storage class over V-USB

2011-02-14T20:29:35+02:00

Saimon wrote:I share my source code today at depositfiles.com. If any one would have problems with this host, I can to upload to other file host server

Hi Saimon,
I'm interested in your MassStorage Emulation. Where can I found the link for the source?
Best regards,
FH

Statistics: Posted by fh_ — Mon Feb 14, 2011 8:29 pm

Re: Mass Storage class over V-USB

2010-12-25T20:46:45+02:00

I share my source code today at depositfiles.com. If any one would have problems with this host, I can to upload to other file host server

Statistics: Posted by Guest — Sat Dec 25, 2010 8:46 pm

Re: Mass Storage class over V-USB

2010-12-25T00:02:34+02:00

Hi Saimon, welcome back that is great news!
I for one would love to see what you have done and i'm sure I can speak for others.

Statistics: Posted by maxi — Sat Dec 25, 2010 12:02 am