Software Vs Hardware Watchdog. A photo-sharing software program for example on your PC or phone works with you and your hardware to take a photo and then communicates with servers and other devices on the internet to show that photo on your friends devices. The embedded software selects the counters initial value and periodically restarts it.
The watchdog software then periodically refreshes the hardware timer. A watchdog timer WDT forces an embedded microprocessor or microcontroller to reset hardware reset in response to an invalid software state. And here are some typical reasons for your reference.
For a hardware watchdog there is hardware that if it is not kicked often enough will assume the software has hung and will reset the system usually or whatever the design dictates.
The most popular firewall choice is a software firewall. Word processing software uses the computer processor memory and hard drive to create and save documents. And here are some typical reasons for your reference. In the case of the software watchdog the ability to reboot will depend on the state of the machines and interrupts.