Acnodes FES 6841 - Manual (Page 36)

© Copyright 2009 Acnodes, Inc.
All rights reserved. Product description and product specifications
are subject to change without notice. For latest product information,
please visit Acnodes’ web site at www.acnodes.com.
661 Brea Canyon Rd., Suite 3
Walnut, CA 91789
tel: 909.598.7388, fax: 909.598.0218, www.acnodes.com
FES6841
Fanless Embedded Controller comes with
Intel Atom N270 Processor
A.2 W83627EHG Watchdog Timer Initial Program
Example: Setting 10 sec. as Watchdog timeout interval
;/////////////////////////////////////////////////////////////////////////////////////////////// Mov dx,2eh ;Enter W83627EHG config mode
Mov al,87h
(out 87h to 2eh twice)
Out dx,al
Out dx,al
;/////////////////////////////////////////////////////////////////////////////////////////////// Mov al,07h
Out dx,al
Inc dx
Mov al,08h ;Select Logical Device 8 (GPIO Port
2)
Out dx,al
;/////////////////////////////////////////////////////////////////////////////////////////////// Dec dx
Mov al,30h ;CR30 (GP20~GP27) Out dx,al
Inc dx
Mov al,01h ;Activate GPIO2
Out dx,al
;/////////////////////////////////////////////////////////////////////////////////////////////// Dec dx
Mov al,0f5h ;CRF5 (PLED mode register) Out dx,al
Inc dx
In al,dx
And al,not 08h ;Set second as counting unit
Out dx,al