[avrdude-dev] Problems with Avrdude error usb_bulk_read

[Ed]

Joerg:
I tried using sudo and results are the same.

Xiaofan:
Avrdude comes from:
 http://download.savannah.gnu.org/releases/avrdude/avrdude-5.11.1.tar.gz
Patches applied:
patch-jtagmkII_private.h.diff
patch-jtagmkII.c.diff
These patches come from the Avrdude bug repository they are for OS X.

Libusb-1.0,8 comes from:
http://sourceforge.net/projects/libusb/files/latest/download?source=files
Patches applied:
None

Libusb-0.1.13 comes from:
http://www.ellert.se/PKGS/libusb-2011-10-29/src/libusb-2011-10-29-svn-macosx.tar.gz
Patches applied:
libusb-64bit.patch
libusb-cxx.patch
libusb-endian.patch
libusb-runloop.patch
This version of libusb comes from this web site:
http://www.ellert.se/twain-sane/

I installed the latest libusb-compat from sources and could not get Avrdude to 
recognize its existance.  So I found this version
and it installed fine.

I'll try your suggestions.

Thanks,
Ed



On Dec 22, 2011, at 11:48 PM, Joerg Wunsch wrote:

> As Ed wrote:
> 
>> avrdude: jtagmkII_getsync(): Sending sign-on command: avrdude: 
>> usb_fill_buf(): usb_bulk_read() error usb_bulk_read: An error occured during 
>> read (see messages above)
> 
> I wonder how MacOS X handles device permissions.  This smells like a
> permission problem to me: all the generic stuff to find out about the
> devices works (using the control endpoint), but actual data transfer
> (using the bulk endpoints) doesn't.
> 
> Does it work if you run it as root (e.g. through sudo)?
> 
> -- 
> cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL
> 
> http://www.sax.de/~joerg/                        NIC: JW11-RIPE
> Never trust an operating system you don't have sources for. ;-)