[bug #43811] Writing a hex file using a ft2232H programmer fails when poll after a page write does not come back as expected.

[avrs-admin]

Jack Gassett jack.gassett@gadgetfactory.net
Sat 13 Dec 2014 08:13:32 AM UTC

I found this message that describes exactly the error that I am experiencing:
https://lists.nongnu.org/archive/html/avrdude-dev/2012-05/msg00013.html

I looked for a patch for this issue but was not able to find one. Has the patch been published anywhere?

file #32658: avrdude-poll-failure.txt

This issue was migrated from https://savannah.nongnu.org/bugs/?43811

[mcuee]

Not so sure if this is still relevant or not.

List mail link:
https://lists.nongnu.org/archive/html/avrdude-dev/2012-05/msg00013.html

---

From: Hannes Weisbach
Subject: Re: [avrdude-dev] FT2232 issues - ident yes, program no
Date: Thu, 10 May 2012 13:48:30 +0200

I believe the issue is related to the polling following a page write - the
software reads the last byte of the page, until it is read back correctly, thus
the page is programmed and we can continue to program the next page (or finish
up). There are multiple problems with this code:
a) a page may not be programmed up until the last byte
b) a value 0xff is indistinguishable from un-programmed flash

I have worked on the page write code for a while now and my changes include a
fix for both problems and I tested the code for a while now. I actually wanted
to rework the flash read routine too and submit all changes together. However,
I could submit a patch just fixing the write routine, if necessary.
To check, if this really is your problem you can compile avrdude with debug
symbols and check in gdb. If I'm correct, a loop located in avrftdi.c:917 will
never be left.

Best regards,
Hannes Weisbach

[mcuee]

Maybe the patch in the following issue can fix this.

• [bug #40108] [PATCH] Fix avrftdi verification error after flash write #303

[mcuee]

I can not write to my ATmega2560 either with the FT2232H based Jtagkey-2. Maybe I will check if it is because of this or becauses of #474.

• [bug #53703] FT232H based programmer returns all 0xFF when reading flash from atmega2560 #474

[mcuee]

I can confirm that my issue is with #474. The patch there fixed my issues with both read and write of ATmega2560 using FT2232H based JTAGKey-2.

• [bug #53703] FT232H based programmer returns all 0xFF when reading flash from atmega2560 #474 (comment)

[mcuee]

Most likely this issue has been fixed and no longer valid.

[mcuee]

I will close this as invalid for now. Please re-open when the issue occurs.