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Virtual USB-port for AVR
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Petr_

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Joined: 24 Mar 2010
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PostPosted: Tue Jan 18, 2011 12:25 pm    Post subject: Reply with quote
ollopa wrote:
One thing to check is that if you're sending exactly 8 bytes then you need to follow that up with a 0-length packet to signal the end of a data session.
Transmission of data packet carries HID driver PC and it will most likely send after 8 bytes, the packet is 0-length.
Controller clearly identifies when it comes to the 8-byte packet, but sometimes hangs for some unknown reason to me.
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six1

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Joined: 27 Feb 2009
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PostPosted: Tue Jan 18, 2011 1:10 pm    Post subject: Reply with quote
@Petr_
from PC to Device i'm sending one more Byte than needed! ($55)
got this Problem also in first Version and that additional Byte helped me!

regards, Michael
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Petr_

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PostPosted: Tue Jan 18, 2011 5:08 pm    Post subject: Reply with quote
If you send the device only zero bytes, then the error is almost there. In the image can be seen that the error occurred after sending a packet № 15500.
And it's not the fault of the transmission or reception, and there was distortion of the transmitted or received data.
Code:
15500  ERROR    Bug compare memory  Send: 00 00 00 00 00 00 00 00 ;    Read: 80 06 02 03 09 04 FF 00


If the device does not send the zero data, a arbitrary, then a transmission error in the first package and the device hangs and never responds to data transfer.
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Petr_

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PostPosted: Tue Jan 18, 2011 10:33 pm    Post subject: Reply with quote
If you send more than one byte (2 or more bytes) in the packet, then the errors occur not only during transmission through 1 endpoint, but also through feature (&B00100001 --> SET_REPORT --> Feature).
If you send only one byte in the packet, then everything is OK.
Perhaps it is incorrect to processed long data packets that contain 2 or more bytes.
But why is error-free system messages are handled 0 endpoint, because they contain more than 1 byte?
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AndersL

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Joined: 25 Jan 2010
Posts: 89
Location: Kragerø,Norway
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PostPosted: Thu Jan 20, 2011 2:48 pm    Post subject: Reply with quote
Petr_,
My Symantec endpoint reports trojans in your *.rar file.
Have you checked it?
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Petr_

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Joined: 24 Mar 2010
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PostPosted: Thu Jan 20, 2011 3:06 pm    Post subject: Reply with quote
Here is the result of verification rar-archive 41 anti-virus http://www.virustotal.com/file-scan/report.html?id=0a0a50d1fca4e2692b93d1dd2a2baf425a0cd75af0b0084e3e8392fd98ab9290-1295531996

PC-software does not contain malicious code. I'm sure 100% because, i compiled the program.
In the archive is the source code (extension PB).
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radan

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PostPosted: Fri Jan 21, 2011 9:40 am    Post subject: Reply with quote
six1 wrote:
@Petr_
from PC to Device i'm sending one more Byte than needed! ($55)
got this Problem also in first Version and that additional Byte helped me!
regards, Michael


Show area code, please.
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six1

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Joined: 27 Feb 2009
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PostPosted: Fri Jan 21, 2011 10:43 am    Post subject: Reply with quote
Hi Radan,

Part of my Delphi Code:
Code:

....
      if Assigned(CurrentDevice) then begin
         ToWrite := 5;//CurrentDevice.Caps.OutputReportByteLength;
         Buf[0] := 0;
         Buf[1] := 1;
         Buf[2] := data1;
         Buf[3] := data2;
         Buf[4] := $55;
....
 


so, Buf[4] := $55; is the additional Byte i will send. I got Problems, if buf[3] was zero! but because of buf[4]=$55 the problem was solved.

At the Micro Side i never use the $55 Byte! it's not in the langth and range of Caps_inputreportbytelength!

this is a workaround, i know, but it's running perfect.

regards, Michael
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radan

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PostPosted: Fri Jan 21, 2011 11:12 am    Post subject: usb Reply with quote
Thanks, I'll experiment Smile
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Petr_

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Joined: 24 Mar 2010
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PostPosted: Fri Jan 21, 2011 11:46 am    Post subject: Reply with quote
six1 wrote:
so, Buf[4] := $55; is the additional Byte i will send. I got Problems, if buf[3] was zero! but because of buf[4]=$55 the problem was solved.

At the Micro Side i never use the $55 Byte! it's not in the langth and range of Caps_inputreportbytelength!

this is a workaround, i know, but it's running perfect.

regards, Michael
Still have bugs! Sad
Code:
     1  OK    Send: 01 14 7B 55
     2  OK    Send: 01 FD 10 55
     3  OK    Send: 01 5B 2B 55
     4  OK    Send: 01 36 60 55
     5  OK    Send: 01 74 CA 55
     6  OK    Send: 01 52 F5 55
     7  OK    Send: 01 23 5E 55
     8  OK    Send: 01 16 7D 55
     9  OK    Send: 01 94 D4 55
    10  OK    Send: 01 75 9C 55
    11  OK    Send: 01 1A 95 55
    12  OK    Send: 01 39 D6 55
    13  OK    Send: 01 68 3A 55
    14  OK    Send: 01 C7 86 55
    15  OK    Send: 01 18 2E 55
    16  OK    Send: 01 73 0E 55
    17  OK    Send: 01 18 F7 55
    18  OK    Send: 01 60 2C 55
    19  OK    Send: 01 31 08 55
    20  OK    Send: 01 29 45 55
    21  OK    Send: 01 DB 25 55
    22  OK    Send: 01 07 CA 55
    23  OK    Send: 01 67 B7 55
    24  OK    Send: 01 EA D9 55
    25  OK    Send: 01 E2 87 55
    26  OK    Send: 01 00 53 55
    27  OK    Send: 01 DF A8 55
    28  OK    Send: 01 AB 10 55
    29  OK    Send: 01 F4 F6 55
    30  OK    Send: 01 5F 52 55
    31  OK    Send: 01 2A 8D 55
    32  OK    Send: 01 2B 6D 55
    33  OK    Send: 01 6D 6A 55
    34  OK    Send: 01 68 4D 55
    35  OK    Send: 01 AD 1B 55
    36  OK    Send: 01 70 4A 55
    37  ERROR    Bug write device (send 0 bytes).

After that, the device stops responding. Sad
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compurap

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Joined: 23 Oct 2007
Posts: 43

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PostPosted: Tue Feb 15, 2011 8:48 pm    Post subject: Reply with quote
any new experiment?
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Petr_

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Joined: 24 Mar 2010
Posts: 66

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PostPosted: Tue Feb 15, 2011 11:30 pm    Post subject: Reply with quote
compurap wrote:
any new experiment?
We are waiting for Mr. ollopa.
Maybe he'll have any ideas.
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six1

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Joined: 27 Feb 2009
Posts: 540

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PostPosted: Wed Feb 16, 2011 8:42 am    Post subject: Reply with quote
just an idea Petr_:
try it without any Hub's between... connect to a root Port on PC Side...
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radan

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PostPosted: Sat Feb 19, 2011 7:55 pm    Post subject: Reply with quote
HID KEYBOARD - http://bascom.at.ua/publ/atomnaja_klaviatura_vinduksoida_hid_usb/1-1-0-54
MIDI KEYBOARD - http://bascom.at.ua/publ/usb_midi_didzhejskij_pult_dlja_virtual_dj/1-1-0-52
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compurap

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Joined: 23 Oct 2007
Posts: 43

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PostPosted: Tue Feb 22, 2011 2:08 pm    Post subject: Reply with quote
Thanks, Radan...I will experiment with your HID Keyboard

May be yo can make a Serial to HID keyboard.... Wink
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