Watchdog Timer Configuration - Spectra MB720 User Manual

Watchdog Timer Configuration

The WDT is used to generate a variety of output signals after a user
programmable count. The WDT is suitable for use in the prevention of system
lock-up, such as when software becomes trapped in a deadlock. Under these sort
of circumstances, the timer will count to zero and the selected outputs will be
driven. Under normal circumstance, the user will restart the WDT at regular
intervals before the timer counts to zero.
SAMPLE CODE:
This code and information is provided "as is" without warranty of any kind,
either expressed or implied, including but not limited to the implied warranties
of merchantability and/or fitness for a particular purpose.
Filename：Main.cpp
//===========================================================================
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
//===========================================================================
#include <stdio.h>
#include <stdlib.h>
#include "W697HF.H"
//===========================================================================
int main (int argc, char *argv[]);
void copyright(void);
void EnableWDT(int);
void DisableWDT(void);
//===========================================================================
int main (int argc, char *argv[])
{
unsigned char bBuf;
unsigned char bTime;
char **endptr;
copyright();
if (argc != 2)
{
printf(" Parameter incorrect!!\n");
return 1;
}
if (Init_W697HF() == 0)
{
printf(" Winbond 83697HF is not detected, program abort.\n");
return 1;
}
bTime = strtol (argv[1], endptr, 10);
printf("System will reset after %d seconds\n", bTime);
EnableWDT(bTime);
return 0;
}
//===========================================================================
void copyright(void)
{
printf("\n======== Winbond 697HF Watch Timer Tester (AUTO DETECT) ========\n"\
" Usage : W697WD reset_time\n"\
" Ex : W697WD 3 => reset system after 3 second\n"\
" W697WD 0 => disable watch dog timer\n");
}
//===========================================================================
void EnableWDT(int interval)
MB720 User's Manual
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