Embedded Firmware Developer

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Embedded Firmware Developer Interview Questions and Answers

Updated 23 May 2024

Q1. what is difference between semaphore and mutex in freertos ?

Ans.

Semaphores allow multiple tasks to access a shared resource, while mutexes only allow one task at a time to access the resource.

  • Semaphores can have a count greater than 1, allowing multiple tasks to access a shared resource simultaneously.

  • Mutexes have a count of 1, ensuring only one task can access the resource at a time.

  • Semaphores are typically used for signaling between tasks, while mutexes are used for exclusive access to resources.

  • Example: A semaphore could be used to con...read more

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