Aaeon ETX-701 User Manual

Aaeon ETX-701 User Manual Manual pdf 55 page image

E T X C P U M o d u l e E T X - 7 0 1Appendix A Programming the Watchdog Timer A-6A.2 W83627EHG Watchdog Timer Initial ProgramExample: Setting 10 sec. as Watchdog timeout interval;///////////////////////////////////////////////////////////////////////////////////////////////Mov dx,2eh ;Enter W83627EHG config modeMov al,87h (out 87h to 2eh twice)Out dx,alOut dx,al;///////////////////////////////////////////////////////////////////////////////////////////////Mov al,07hOut dx,alInc dxMov al,08h ;Select Logical Device 8 (GPIO Port2)Out dx,al;///////////////////////////////////////////////////////////////////////////////////////////////Dec dxMov al,30h ;CR30 (GP20~GP27)Out dx,alInc dxMov al,01h ;Activate GPIO2Out dx,al