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Date:      Thu, 7 Apr 2022 20:20:18 +0200
From:      Tomek CEDRO <tomek@cedro.info>
To:        hardware@freebsd.org
Cc:        Hans Petter Selasky <hps@selasky.org>, Axel Rau <Axel.Rau@chaos1.de>
Subject:   Re: timeouts on USB ISP programmer
Message-ID:  <CAFYkXjmgLi0F4gLVWQxtVwS6tCXCni%2BxU2-7KQM4ve%2B%2B-aEiBw@mail.gmail.com>
In-Reply-To: <CAFYkXjmjnFX1a3%2BCQxAxdwX=-oASSEWLdzrmx=%2B4QbX3_Og2Gw@mail.gmail.com>
References:  <3A781DFA-1E2C-41A5-8053-C90A806244DC@Chaos1.DE> <34a747ea-2ee5-660f-71c6-dc00d5de337f@selasky.org> <9334c4f0-3ecf-c046-420f-516e39379981@selasky.org> <976BDBEB-8B57-4541-A0B7-3F2C89498DC6@Chaos1.DE> <7190bdde-22bc-79ee-06d0-d0114a3ffbad@selasky.org> <CAFYkXj=HMdxZG%2B8x0gpLCDy8cbu_qOpFqcN37RO9EG=WOBHkqw@mail.gmail.com> <CAFYkXjmjnFX1a3%2BCQxAxdwX=-oASSEWLdzrmx=%2B4QbX3_Og2Gw@mail.gmail.com>

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I have reported an issue on avrdude github project, hope they give us
some hints and we all make our devices operational on FreeBSD :-)

https://github.com/avrdudes/avrdude/issues/920

Regarding Diamex interface I would try one after another from the list
of `-c "?"` until one of them works, then configuration file can be
created. If none of them works then a configuration needs to be
created from scratch based on existing configuration files. I guess
this should be in the vendor interest to have that configuration
working out of the box :-)

Regarding FT2232H chip I have used that one long ago (~10 years) and
created driver for first implementations of SWD for ARM-Cortex devices
(under LibSWD project). I even created SPI interface on that chip. I
was using KT-LINK interface. FT2232H has two channels, can be used for
UART or serial/parallel bitbang. It uses sort of commands to
read/write GPIO ports. Technical specification is here:

https://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232H.pdf

-- 
CeDeROM, SQ7MHZ, http://www.tomek.cedro.info



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