[avrdude-dev] [patch #9507] Fix UPDI chip erase

[Jan Egil Ruud]

Follow-up Comment #6, patch #9507 (project avrdude):

Here's another attempt on the unlocking, and it should be according to your
suggested strategy.

One significant change I had to do was to allow the error code received in
jtag3_recv() to trickle all the way up to main.c to be able to identify that
the device was locked. Since all return status checks I could find only
checked for "<0" I chose to replace some "return -1;" with "return status;",
and in jtag3_recv() I return "-(RSP3_FAIL_OCD_LOCKED)".

The attachment unlock_test_output.txt is a "screen shot" of the terminal when
trying out the different scenarios.

This patch needs the latest patch in patch #9506
(https://savannah.nongnu.org/patch/?9506) to work. Patch #9506 contains all
the changes to avrdude.conf.in.

(file #42847, file #42848)
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Additional Item Attachment:

File name: unlock_avr8x.patch             Size:11 KB
File name: unlock_test_output.txt         Size:2 KB


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