[Solved] Identify the error in this FreeRTOS ISR code snippet: void ISR_Handler() { xSemaphoreGive(xSemaphore); } | FreeRTOS

FreeRTOS - Interrupt Management

Identify the error in this FreeRTOS ISR code snippet:

void ISR_Handler() {
  xSemaphoreGive(xSemaphore);
}

AMissing return type for ISR_Handler

BISR_Handler should not be a void function

CSemaphore variable not declared

DUsing xSemaphoreGive instead of xSemaphoreGiveFromISR inside ISR

Step-by-Step Solution

Solution:

Step 1: Check correct semaphore function for ISR
Inside ISR, xSemaphoreGiveFromISR must be used, not xSemaphoreGive.
Step 2: Confirm other code parts
Function has correct return type and ISR can be void; semaphore declaration is not shown but assumed correct.
Final Answer:
Using xSemaphoreGive instead of xSemaphoreGiveFromISR inside ISR -> Option D
Quick Check:
Use xSemaphoreGiveFromISR in ISR [OK]

Quick Trick: Use FromISR versions of API inside ISRs [OK]

Common Mistakes:

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