Re: How to control GPIO pins by SW?
From: Yannick Chamming's [eMVP] (ychammings_nospam_at_adeset.com)
Date: 01/20/05
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Date: Thu, 20 Jan 2005 08:38:49 +0100
The best thing to do is to create a stream driver that will use
VirtualAlloc/VirtualCopy to map GPIO registers and access them to set and
clear the signals
-- ---------------------------------------------------------------- Yannick Chamming's (eMVP) ADESET Windows Embedded Manager ychammings AT adeset DOT com> http://www.adeset.com Tél : +33 (0)4.72.18.57.77 Fax : +33 (0)4.72.18.57.78 ---------------------------------------------------------------- "Walzer" <wangz@amoi.com.cn> wrote in message news:u0bnsJr$EHA.3596@TK2MSFTNGP12.phx.gbl... > I only have PXA270 and PXA250 developer's manal > Both of them have the registers "GPIO Pin Output Clear Register" & "GPIO Pin Output Set Register" > You can use them to control output GPIO pin level. > > "kemin" <kemin@discussions.microsoft.com> ??????:10321469-5BD1-4A68-BD6D-406C01034C33@microsoft.com... > > Dear all, > > > > We use GPIO pins to connect to our external device. > > Now, we want to reset that device via GIO pins. > > Could someone tell us how to control GPIO pins by SW? > > Thanks!! > > PS: Our HW is Xscale PXA255 EVM; OS is WinCE.NET 4.2 > > > > Kemin
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