void board_initialize(void)
{
#if (defined(CONFIG_SAM34_WDT) && !defined(CONFIG_WDT_DISABLE_ON_RESET))
/* Configure watchdog timer and enable kicker kernel thread. */
DEBUGASSERT(up_wdginitialize() >= 0);
#endif
#ifndef CONFIG_ARCH_LEDS
/* Initialize user led */
sam_ledinit();
#endif
#ifdef CONFIG_TIMER
/* Registers the timers and starts any async processes (which may include the scheduler) */
sam_timerinitialize();
#endif
}
int wdog_main(int argc, char *argv[])
{
struct wdog_example_s wdog;
#ifdef CONFIG_DEBUG_WATCHDOG
struct watchdog_status_s status;
#endif
long elapsed;
int fd;
int ret;
/* Parse the command line */
parse_args(&wdog, argc, argv);
/* Initialization of the WATCHDOG hardware is performed by logic external to
* this test.
*/
ret = up_wdginitialize();
if (ret != OK)
{
message("wdog_main: up_wdginitialize failed: %d\n", ret);
goto errout;
}
/* Open the watchdog device for reading */
fd = open(CONFIG_EXAMPLES_WATCHDOG_DEVPATH, O_RDONLY);
if (fd < 0)
{
message("wdog_main: open %s failed: %d\n",
CONFIG_EXAMPLES_WATCHDOG_DEVPATH, errno);
goto errout;
}
/* Set the watchdog timeout */
ret = ioctl(fd, WDIOC_SETTIMEOUT, (unsigned long)wdog.timeout);
if (ret < 0)
{
message("wdog_main: ioctl(WDIOC_SETTIMEOUT) failed: %d\n", errno);
goto errout_with_dev;
}
/* Then start the watchdog timer. */
ret = ioctl(fd, WDIOC_START, 0);
if (ret < 0)
{
message("wdog_main: ioctl(WDIOC_START) failed: %d\n", errno);
goto errout_with_dev;
}
/* Then ping */
for (elapsed = 0; elapsed < wdog.pingtime; elapsed += wdog.pingdelay)
{
/* Sleep for the requested amount of time */
usleep(wdog.pingdelay * 1000);
/* Show watchdog status. Only if debug is enabled because this
* could interfere with the timer.
*/
#ifdef CONFIG_DEBUG_WATCHDOG
ret = ioctl(fd, WDIOC_GETSTATUS, (unsigned long)&status);
if (ret < 0)
{
message("wdog_main: ioctl(WDIOC_GETSTATUS) failed: %d\n", errno);
goto errout_with_dev;
}
message("wdog_main: flags=%08x timeout=%d timeleft=%d\n",
status.flags, status.timeout, status.timeleft);
#endif
/* Then ping */
ret = ioctl(fd, WDIOC_KEEPALIVE, 0);
if (ret < 0)
{
message("wdog_main: ioctl(WDIOC_KEEPALIVE) failed: %d\n", errno);
goto errout_with_dev;
}
message(" ping elapsed=%ld\n", elapsed);
msgflush();
}
/* Then stop pinging */
for (; ; elapsed += wdog.pingdelay)
{
/* Sleep for the requested amount of time */
usleep(wdog.pingdelay * 1000);
/* Show watchdog status. Only if debug is enabled because this
* could interfere with the timer.
*/
#ifdef CONFIG_DEBUG_WATCHDOG
ret = ioctl(fd, WDIOC_GETSTATUS, (unsigned long)&status);
if (ret < 0)
{
message("wdog_main: ioctl(WDIOC_GETSTATUS) failed: %d\n", errno);
goto errout_with_dev;
}
message("wdog_main: flags=%08x timeout=%d timeleft=%d\n",
status.flags, status.timeout, status.timeleft);
#endif
message(" NO ping elapsed=%ld\n", elapsed);
msgflush();
}
/* We should not get here */
ret = ioctl(fd, WDIOC_STOP, 0);
if (ret < 0)
{
message("wdog_main: ioctl(WDIOC_STOP) failed: %d\n", errno);
goto errout_with_dev;
}
close(fd);
msgflush();
return OK;
errout_with_dev:
close(fd);
errout:
msgflush();
return ERROR;
}