Moxa Technologies UC-7420/7410 - Manual (Page 82)

UC-7420/7410 User’s Manual Programmer’s Guide
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int swtd_disable(int fd)
Description:
Disable the application to ack sWatchDog. And the kernel will be auto ack it. User does
not to do it at periodic.
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.
int swtd_get(int fd, int *mode, unsigned long *time)
Description:
Get current setting values.
mode –
1 for user application enable sWatchDog: need to do ack.
0 for user application disable sWatchdog: does not need to do ack.
time – The time period to ack sWatchDog.
Input :
int fd - the file handle from swtd_open() return value.
int *mode - the function will be return the status enable or disable user application
need to do ack.
unsigned long *time – the function will return the current time period.
Output:
OK will be zero.
The other has some error, to get error code from errno().
int swtd_ack(int fd)
Description:
Acknowledge sWatchDog. When the user application enable sWatchDog. It need to call
this function periodically with user predefined time in the application program.
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().