No sign 2

irradiacion/tools/refresh_watchdog.cpp

+
+// iisalive.cpp
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h> // for watchdog timer
+#include <unistd.h> // needed only if close() is used to close watchdog timer
+#include <sys/ioctl.h> // for watchdog timer
+#include <linux/watchdog.h> // for watchdog timer
+#include <time.h>
+
+int main(int argc, char*argv[]) {
+int fd, ret;
+
+/* open WDT0 device (WDT0 enables itself automatically) */
+fd = open("/dev/watchdog0", O_RDWR);
+if (fd<0) {
+fprintf(stderr, "Open watchdog device failed!\r\n");
+return -1;
+}
+
+
+ret = ioctl(fd, WDIOC_KEEPALIVE, 0);
+if (ret<0) {
+fprintf(stderr, "Kick watchdog failed!\r\n");
+return -1;
+}
+
+
+close(fd);
+if (ret<0) {
+fprintf(stderr, "Failed to close watchdog device.");
+return -1;
+}
+
+return 0;
+}