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Watchdog Timer Usage Guide

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Basic Concept: Watchdog timers monitor system activity and trigger resets when stuck
They prevent system failures by monitoring regular resets
Two types exist: Hardware and Software Watchdog Timers
Implementation Steps: Initialize watchdog timer and configure timeout value
Reset timer counter to zero to trigger system reboot
Implement interrupt service routine (ISR) for timer interrupt handling
Save program counter and stack contents for troubleshooting
Best Practices: Choose appropriate timeout value based on program execution time
Use separate clock source for watchdog timer
Implement graceful recovery procedures without data loss
Thoroughly test code in various failure scenarios
Document timer settings and recovery procedures