Mastering Watchdogs on STM32 Using HAL Drivers
"Mastering Watchdogs on STM32 Using HAL Drivers"
Modern embedded systems are expected to operate continuously and reliably, sometimes for months or even years without human intervention. In industrial automation, medical devices, automotive electronics, IoT systems, and aerospace applications, software crashes or lockups can lead to severe failures. One of the most important protection mechanisms used in embedded systems to recover from these unexpected conditions is the watchdog timer.
STM32 microcontrollers provide hardware watchdog peripherals capable of automatically resetting the MCU whenever the software becomes unresponsive. These watchdogs are extremely valuable because they continue operating independently from the main application software. Even if the CPU enters an infinite loop, experiences a deadlock, or suffers from software corruption, the watchdog can force the system back into a known operational state.
This video explains how to configure and use both watchdog peripherals available on STM32 MCUs using HAL drivers:
• Independent Watchdog (IWDG)
• Window Watchdog (WWDG)
You will learn how each watchdog works, how to configure them using STM32CubeMX, how to initialize them using HAL drivers, and how to design robust watchdog refresh strategies for professional embedded applications.
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