What are the best practices for handling priority inversion in FreeRTOS on ESP32?
Hi guys While working on real-time task scheduling and management with FreeRTOS on ESP32 for a wireless communication system, I faced priority inversion and task starvation issues. I observed that lower priority tasks occasionally blocked higher priority ones, causing missed deadlines, missed sensor readings, and unreliable communication. This was evident as higher priority tasks waited indefinitely for resources held by lower priority tasks. What are the best practices for handling priority inversion in FreeRTOS on ESP32?
Solution:Jump to solution
Yes, I used a mutex as suggested, and it was the first step that @Joseph Ogbonna gave me that made the difference.
5 Replies
Hi @Daniel kalu , do you have an idea on using mutex with priority inheritance?
You can use this steps to test run your development
1. Enable Priority Inheritance: Set
configUSE_MUTEXES to 1 for mutex priority inheritance.
2. Use Semaphores: Prefer semaphores for simpler resource management.
3. Optimize Task Priorities: Assign priorities carefully to avoid unnecessary blocking.
4. Minimize Blocking Calls: Avoid long blocking calls in high-priority tasks.
5. Implement Short Timeouts: Use short timeouts for waiting on resources.
6. Review Critical Sections: Keep critical sections brief.
7. Monitor System Behavior: Use tracing tools to analyze and detect issues.@Daniel kalu have you used a mutex as @Marvee Amasi suggests?
Solution
Yes, I used a mutex as suggested, and it was the first step that @Joseph Ogbonna gave me that made the difference.
Also after implementing that, I also optimized task priorities and minimized blocking calls, and everything works perfectly now