Kontron KTLX800-pITX Manual de usuario descargar pdf (Pagina 19)

KTD-S0023-A Page 16 CPLD Interface

KTLX800/pITX Software Guide

5.2.3 Fan Control Example

#include <stdio.h>

#include <dos.h>

#include <conio.h>

#define CPLD_BASE_ADDR 0xA80

#define FAN_CTRL_INDEX 0x06

#define FAN_MASK 0x0F

#define RESERVED_MASK 0xF0

void SetFanVal (unsigned char value)

{

unsigned char reg;

outp (CPLD_BASE_ADDR, FAN_CTRL_INDEX);

reg = inp (CPLD_BASE_ADDR+1);

reg &= RESERVED_MASK;

value &= FAN_MASK;

value |= reg;

outp (CPLD_BASE_ADDR+1, value);

}

void main (void)

{

SetFanVal (0x05);

getch ();

SetFanVal (0x0F);

}

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