Watchdog/en: различия между версиями
(Новая страница: «It is a timer built on a separate comparator chip. The timer is periodically reset by sending an alternating signal to the timer input from the GPIO output of the…») |
(Новая страница: «If the reset does not occur within a certain time interval (~15c), a power reset occurs (turning off one of the power lines for 3-4 seconds).») |
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It is a timer built on a separate comparator chip. The timer is periodically reset by sending an alternating signal to the timer input from the GPIO output of the processor. | It is a timer built on a separate comparator chip. The timer is periodically reset by sending an alternating signal to the timer input from the GPIO output of the processor. | ||
If the reset does not occur within a certain time interval (~15c), a power reset occurs (turning off one of the power lines for 3-4 seconds). | |||
В системе watchdog представлен устройством /dev/watchdog1, конфигурация watchdog-демона храниться в файле /etc/watchdog.conf | В системе watchdog представлен устройством /dev/watchdog1, конфигурация watchdog-демона храниться в файле /etc/watchdog.conf | ||
Версия 19:35, 28 мая 2019
A watchdog timer or Watchdog is a hardware implemented monitoring circuit for a system hang.
It is a timer built on a separate comparator chip. The timer is periodically reset by sending an alternating signal to the timer input from the GPIO output of the processor.
If the reset does not occur within a certain time interval (~15c), a power reset occurs (turning off one of the power lines for 3-4 seconds).
В системе watchdog представлен устройством /dev/watchdog1, конфигурация watchdog-демона храниться в файле /etc/watchdog.conf