From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3C67EB09.5010700@embeddededge.com> Date: Mon, 11 Feb 2002 11:02:17 -0500 From: Dan Malek MIME-Version: 1.0 To: bart@ardistech.com Cc: Alex Zeffertt , Embedded Linux PPC List , dmalek@jlc.net Subject: Re: MPC823: i2c-algo-8xx read interrupt? References: <3C63EC39.ACEECA08@ardistech.com> <3C640532.5000708@embeddededge.com> <3C640C11.4080407@cambridgebroadband.com> <3C6776CC.634AB65D@ardistech.com> <3C67E38C.2020304@embeddededge.com> <3C67E711.2108C6DD@ardistech.com> Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: bart@ardistech.com wrote: > You're right, but spending XX$ on a fast PPC chip and after that let it run > busy loops to time the I2C control makes me feel bad :) So, you think interrupt and management overhead of the software to send a couple of bytes on a 100k serial interface is free? The chip designers are often upset when you don't use every feature, but you need to apply some real systems engineering methods and analyze how all of these little things help (or hurt) your application. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/