Programmer’s Guide |
int swtd_close(int fd)
Description:
Close the file handle.
Input : |
|
int fd | - the file handle from swtd_open() return value. |
Output: |
|
OK will be zero.
The other has some error, to get error code from errno().
4.Special Note
When you “kill the application with
When your application enables the sWatchDog and does not ack, your application may have a logical error, or your application has made a core dump. The kernel will not change to auto ack. This can cause a serious problem, causing your system to reboot again and again.
5.User application example
Example 1:
#include<stdio.h> #include<stdlib.h> #include<string.h> #include<moxadevice.h>
int main(int argc, char *argv[])
{
int fd;
fd = swtd_open(); if ( fd < 0 ) {
printf(“Open sWatchDog device fail !\n”); exit(1);
}
swtd_enable(fd, 5000); // enable it and set it 5 seconds while ( 1 ) {
//do user application want to do
…..
….
swtd_ack(fd); …..
….
}
swtd_close(fd); exit(0);
}
The makefile is shown below:
all:
Example 2:
#include<stdio.h> #include<stdlib.h> #include<signal.h> #include<string.h>