Date: Sat, 12 Nov 2011 08:39:41 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Subject: Re: [uslcom][patch] Add GPIO support Message-ID: <201111120839.41108.hselasky@c2i.net> In-Reply-To: <CAB-7mS6-kZk_Vxyd%2BQ-cGBEdAzqw=-QAh4GnH2OPVYC1fE5hqA@mail.gmail.com>
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On Friday 11 November 2011 22:06:19 JD Louw wrote: > This patch adds custom IOCTLs to read and write the 4 GPIO pins on the > cp2103 usb-to-serial chip. Time from IOCTL to actual pin change is > pretty slow though. Hi, How slow is it? Have you tried reducing the interval of the intervalled control request and see if there are any changes? Maybe the intervalled control request should be started from a timer/callout instead. --HPShelp
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