URL:
<http://savannah.nongnu.org/bugs/?26312>
Summary: OS X Intel AVR-Dragon "jtagmkII_getsync(): sign-on
command: status -1" error
Project: AVR Downloader/UploaDEr
Submitted by: fertigtm
Submitted on: Do 23 Apr 2009 16:33:27 GMT
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name: fertigtm
Originator Email:
Open/Closed: Open
Discussion Lock: Any
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Details:
Hello folks,
I have had problems with avrdude and an avrdragon on my Intel Mac. Im running
Mac OS X 10.4.11. So far the problem was that avrdude says:
avrdude: usbdev_open(): Found AVRDRAGON, serno: XXXXX
avrdude: jtagmkII_getsync(): sign-on command: status -1
avrdude: jtagmkII_getsync(): sign-on command: status -1
Searching the net I found entries to a similar problem but without a solution
to fix it. It seems that at least one person could bring it up and running
with upgrading to OS X 10.5.
As I'm not willing to upgrade yet I tracked to problem down. For this I tried
out several version of libusb. All had the same behavior, they failed.
At least I could avoid the error by removing stk500v2_drain(pgm, 0) call in
stk500v2_dragon_isp_open().
It seems that the first initial read to USB which is done by the
stk500v2_drain function let the corresponding Mac OS X function return with a
timeout. This results in an error which let the application exit.
With a small patch you can avoid this behavior. For me it works great. I
tested it with uploading a program and downloading the fuse bytes.
The attached file contains a patch against avrdude 5.5.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Do 23 Apr 2009 16:33:27 GMT Name: osxintelDragonFix.diff Size: 439B
By: fertigtm
<http://savannah.nongnu.org/bugs/download.php?file_id=18002>
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