[Solved] Given the following snippet, what will be the output? typedef struct { int requestId; int data; } Request; QueueHandle_t queue; void ResourceManagerTask(void *pvParameters) { Request req;... | FreeRTOS

FreeRTOS - Design Patterns for RTOS

Given the following snippet, what will be the output?

typedef struct {
  int requestId;
  int data;
} Request;

QueueHandle_t queue;

void ResourceManagerTask(void *pvParameters) {
  Request req;
  while(1) {
    if(xQueueReceive(queue, &req, portMAX_DELAY) == pdPASS) {
      printf("Processed request %d with data %d\n", req.requestId, req.data);
    }
  }
}

// Assume a request with requestId=5 and data=10 is sent to queue

ACompilation error due to struct usage

BProcessed request 10 with data 5

CProcessed request 5 with data 10

DNo output because queue is empty

Step-by-Step Solution

Solution:

Step 1: Understand queue receive behavior
The Resource Manager Task waits for a request and prints its fields when received.
Step 2: Match sent request values
The request sent has requestId=5 and data=10, so the printed output matches these values.
Final Answer:
Processed request 5 with data 10 -> Option C
Quick Check:
Output matches request fields = Processed request 5 with data 10 [OK]

Quick Trick: Queue receive prints request fields as sent [OK]

Common Mistakes:

Mixing requestId and data values
Assuming no output without explicit task start
Thinking struct causes compile error

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More FreeRTOS Quizzes

Given the following snippet, what will be the output?

Step 1: Understand queue receive behavior

Step 2: Match sent request values

Final Answer:

Quick Check:

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