CNET CWC-854 Manual do Utilizador descarregar pdf (Página 86)

ThinkCore IA241/240 Linux User’s Manual Programmer’s Guide

6-4

Output

OK will be zero. The other has some error, to get the error code from errno().

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().

int swtd_close(int fd)

Description

Close the file handle.

Input

int fd - the file handle from swtd_open() return value.

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CNET CWC-854 Manual do Utilizador Página 86