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Re: [avrdude-dev] How to talk to second device in JTAG chain?


From: Joerg Wunsch
Subject: Re: [avrdude-dev] How to talk to second device in JTAG chain?
Date: Tue, 6 Nov 2007 00:16:27 +0100
User-agent: Mutt/1.5.11

As Grant Edwards wrote:

> My JTAG chain consists of two devices: an MSP430 followed by an
> ATmega1281V.

The attached patch adds a -j option that allows adjusting JTAG
daisy-chain parameters.  The argument to the option is a
comma-separated list of four numbers:

-j ub,ua,bb,ba

ub -- units before
ua -- units after
bb -- bits before
ba -- bits after

I cannot test it except by passing -j 0,0,0,0, and cross-checking that
specifying any other parameters results in the ICE being unable to
communicate with the target.

Documentation update is still missing.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

Attachment: daisychain.patch
Description: Text document


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