int up_wdginitialize(void)
{
#if (defined(CONFIG_SAM34_WDT) && !defined(CONFIG_WDT_DISABLE_ON_RESET))
int fd;
int ret;
/* Initialize tha register the watchdog timer device */
wdgvdbg("Initializing Watchdog driver...\n");
sam_wdtinitialize(CONFIG_WATCHDOG_DEVPATH);
/* Open the watchdog device */
wdgvdbg("Opening.\n");
fd = open(CONFIG_WATCHDOG_DEVPATH, O_RDONLY);
if (fd < 0)
{
wdgdbg("open %s failed: %d\n", CONFIG_WATCHDOG_DEVPATH, errno);
goto errout;
}
/* Set the watchdog timeout */
wdgvdbg("Timeout = %d.\n", CONFIG_WDT_TIMEOUT);
ret = ioctl(fd, WDIOC_SETTIMEOUT, (unsigned long)CONFIG_WDT_TIMEOUT);
if (ret < 0)
{
wdgdbg("ioctl(WDIOC_SETTIMEOUT) failed: %d\n", errno);
goto errout_with_dev;
}
/* Set the watchdog minimum time */
wdgvdbg("MinTime = %d.\n", CONFIG_WDT_MINTIME);
ret = ioctl(fd, WDIOC_MINTIME, (unsigned long)CONFIG_WDT_MINTIME);
if (ret < 0)
{
wdgdbg("ioctl(WDIOC_MINTIME) failed: %d\n", errno);
goto errout_with_dev;
}
/* Start Kicker task */
#if defined(CONFIG_WDT_THREAD)
sched_lock();
int taskid = KERNEL_THREAD(CONFIG_WDT_THREAD_NAME,
CONFIG_WDT_THREAD_PRIORITY,
CONFIG_WDT_THREAD_STACKSIZE,
(main_t)wdog_daemon, (FAR char * const *)NULL);
ASSERT(taskid > 0);
sched_unlock();
#endif
return OK;
errout_with_dev:
close(fd);
errout:
return ERROR;
#else
return -ENODEV;
#endif
}
int sam_watchdog_initialize(void)
{
#if (defined(CONFIG_SAM34_WDT) && !defined(CONFIG_WDT_DISABLE_ON_RESET))
FAR struct file filestruct;
int ret;
/* Initialize tha register the watchdog timer device */
wdinfo("Initializing Watchdog driver...\n");
sam_wdtinitialize(CONFIG_WATCHDOG_DEVPATH);
/* Open the watchdog device */
wdinfo("Opening.\n");
ret = file_open(&filestruct, CONFIG_WATCHDOG_DEVPATH, O_RDONLY);
if (ret < 0)
{
wderr("ERROR: open %s failed: %d\n", CONFIG_WATCHDOG_DEVPATH, ret);
goto errout;
}
/* Set the watchdog timeout */
wdinfo("Timeout = %d.\n", CONFIG_WDT_TIMEOUT);
ret = file_ioctl(&filestruct, WDIOC_SETTIMEOUT,
(unsigned long)CONFIG_WDT_TIMEOUT);
if (ret < 0)
{
wderr("ERROR: ioctl(WDIOC_SETTIMEOUT) failed: %d\n", errno);
goto errout_with_dev;
}
/* Set the watchdog minimum time */
wdinfo("MinTime = %d.\n", CONFIG_WDT_MINTIME);
ret = file_ioctl(&filestruct, WDIOC_MINTIME,
(unsigned long)CONFIG_WDT_MINTIME);
if (ret < 0)
{
wderr("ERROR: ioctl(WDIOC_MINTIME) failed: %d\n", errno);
goto errout_with_dev;
}
/* Start Kicker task */
#if defined(CONFIG_WDT_THREAD)
sched_lock();
int taskid = kthread_create(CONFIG_WDT_THREAD_NAME,
CONFIG_WDT_THREAD_PRIORITY,
CONFIG_WDT_THREAD_STACKSIZE,
(main_t)wdog_daemon, (FAR char * const *)NULL);
DEBUGASSERT(taskid > 0);
UNUSED(taskid);
sched_unlock();
#endif
return OK;
errout_with_dev:
file_close(&filestruct);
errout:
return ret;
#else
return -ENODEV;
#endif
}