ADLINK Technology cPCI-3920 Series Uživatelský manuál stáhnout pdf (Strana 55)

Watchdog Timer 41

AMC-1000

void write_config_data_byte(unsigned

char,unsigned char);

unsigned char read_config_data_byte(unsigned

char);

unsigned int read_wdt_io_base();

/* access wdt I/O registers routines */

void write_preload_val2_reg(unsigned long int);

void clear_preload_val1_reg();

void unlocking_reg();

/* Global parameter */

unsigned int wdt_io_base;

void main(void)

{

// unsigned int wdt_io_base;

unsigned long int time_out_val=0;

wdt_io_base=read_wdt_io_base();

printf("Intel 3100 Chipset Watch-Dog Timer

test utility.\n");

printf("Intel 3100 WDT IO Base Address ==

0x%x\n",wdt_io_base);

while(1)//

(time_out_val==0)||(time_out_val>1050))

{

//3sec printf("Please input the time to count

down (1-1050 sec): ");

//3sec scanf("%d",&time_out_val);

}

//3sectime_out_val=time_out_val*1000;//transfer

to msec unit.

time_out_val=time_out_val+3000; //3sec

clear_preload_val1_reg();//we don't need

preload_val1 caused internal interrupt.

write_preload_val2_reg(time_out_val);//

write preload_val2 ,it will cause external

interrupt.(WDT_TOUT#)

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ADLINK Technology cPCI-3920 Series Uživatelský manuál Strana 55