AVR Downloader/UploaDEr - Bugs: bug #26312, OS X Intel AVR-Dragon...
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bug #26312: OS X Intel AVR-Dragon "jtagmkII_getsync(): sign-on command: status -1" error
Submitter: | Andreas Fertig <fertigtm> | ||
Submitted: | Thu 23 Apr 2009 04:33:27 PM UTC | ||
Category: | None | Severity: | 3 - Normal |
Priority: | 5 - Normal | Item Group: | None |
Status: | None | Privacy: | Public |
Assigned to: | None | Originator Name: | fertigtm |
Open/Closed: | Open | Release: | None |
Programmer hardware: | Device type: |
Attached Files
Depends on the following items: None found
Items that depend on this one: None found
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Follow 2 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2009-04-23 | fertigtm | Attached File | - | Added osxintelDragonFix.diff, #18002 | |
Carbon-Copy | - | Added fertigtm |
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Corresponding source code
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.