[avrdude-dev] [bug #44848] OS X and avrmkII, again

[Juergen Eckert]

URL:
  <http://savannah.nongnu.org/bugs/?44848>

                 Summary: OS X and avrmkII, again
                 Project: AVR Downloader/UploaDEr
            Submitted by: jesid
            Submitted on: Wed 15 Apr 2015 03:18:01 PM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: jesid
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

    _______________________________________________________

Details:

Hi

this bug is related to my previous bugfix #41357.

I recently started to reuse my old avrmkII to flash ATXmegas. 
Every second flashing attempt reports exactly 2 errors:

avrdude: stk500v2_recv_mk2: error in USB receive
avrdude: stk500v2_recv_mk2: error in USB receive 

After that one execution works fine before everything starts over again...

Everything works fine. It just takes a lot of time to complete the task.


I recommend to undo my bugfix #41357. usb_reset() removes this errors and
speeds up the deployment. Since my last bugfix everything got updated. Now OS
X does not seem to be sensible to usb_reset() anymore. Well, at least on my
system... Honestly, I have no clue what has changed.

BTW: I am using: avrdude 6.1, latest OS X, and latest avrmkII firmware.

A quick note about the avrmkII->atxmega programming performance:
In the error-less case it takes about 6 sec for the devices to get in sync.
After that it works fast as hell. I don't know whether the processor, the
avrmkII, or avrdude is to blame for. Just wanted to mention this. Here is a
log including some timing notes:

avrdude -px128a1 -cavrispmkII
-Uflash:w:../00_EclipseWorkspaces/AVR/ATxmegaTest/Release/ATxmegaTest.hex:a
-vvvv

avrdude: Version 6.1, compiled on Apr 15 2015 at 01:36:32
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/usr/local/etc/avrdude.conf"
         User configuration file is "/Users/sid/.avrduderc"
         User configuration file does not exist or is not a regular file,
skipping

         Using Port                    : usb
         Using Programmer              : avrispmkII
avrdude: usbdev_open(): Found AVRISP mkII, serno: 000200100981


{{{{{{{{ waits for about 1sec }}}}}}}}}}


avrdude: Sent: . [01]
avrdude: Recv: . [01] . [00] . [0a] A [41] V [56] R [52] I [49] S [53] P [50]
_ [5f] M [4d] K [4b] 2 [32]
avrdude: stk500v2_getsync(): found AVRISP mkII programmer




{{{{{{{{ waits for about 5sec }}}}}}}}}}



         AVR Part                      : ATxmega128A1
         Chip Erase delay              : 0 us
         PAGEL                         : P00
         BS2                           : P00
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 0
         StabDelay                     : 0
         CmdexeDelay                   : 0
         SyncLoops                     : 0
         ByteDelay                     : 0
         PollIndex                     : 0
         PollValue                     : 0x00
         Memory Detail                 :



{{{{{{{{ from here on everything is fast as usual }}}}}}}}}}

Thanks, awesome work!
Juergen





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