linux-kernel - Re: Toggling GPIO at 38Khz

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Message-ID: <48ED6BE5.30908@billgatliff.com>
Date:	Wed, 08 Oct 2008 21:26:45 -0500
From:	Bill Gatliff <bgat@...lgatliff.com>
To:	Dave Hylands <dhylands@...il.com>
CC:	Remy Bohmer <linux@...mer.net>, Jon Smirl <jonsmirl@...il.com>,
	ARM Linux Mailing List 
	<linux-arm-kernel@...ts.arm.linux.org.uk>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: Toggling GPIO at 38Khz

Dave Hylands wrote:

> You could also do something similar if you have a SPI interface. Just
> set the clock to the right frequency and use the bits sent out to
> generate your pulses.

Good point.  I have seen that very thing done before, albeit for something other
than IRDA.  SPI is particularly nice for that, because you don't have to deal
with the start/stop bits imposed by UART protocols.


b.g.
-- 
Bill Gatliff
bgat@...lgatliff.com
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