[Solved] What does configMAX_SYSCALL_INTERRUPT_PRIORITY control in FreeRTOS? — Ans: The highest interrupt priority that can safely call FreeRTOS API functions | FreeRTOS

FreeRTOS - Interrupt Management

What does configMAX_SYSCALL_INTERRUPT_PRIORITY control in FreeRTOS?

AThe maximum number of interrupts allowed

BThe lowest interrupt priority allowed in the system

CThe highest interrupt priority that can safely call FreeRTOS API functions

DThe priority of the idle task

Step-by-Step Solution

Solution:

Step 1: Understand FreeRTOS interrupt priority limits
FreeRTOS restricts API calls to interrupts at or below a certain priority level to maintain system stability.
Step 2: Role of configMAX_SYSCALL_INTERRUPT_PRIORITY
This configuration sets the highest interrupt priority that can safely call FreeRTOS API functions.
Final Answer:
The highest interrupt priority that can safely call FreeRTOS API functions -> Option C
Quick Check:
configMAX_SYSCALL_INTERRUPT_PRIORITY = highest safe ISR priority [OK]

Quick Trick: Remember: configMAX_SYSCALL_INTERRUPT_PRIORITY limits safe ISR API calls [OK]

Common Mistakes:

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What does configMAX_SYSCALL_INTERRUPT_PRIORITY control in FreeRTOS?