Which of the following is the correct way to create a FreeRTOS software timer for heartbeat every 1000 ms?

easy📝 Syntax Q3 of 15

FreeRTOS - Design Patterns for RTOS

AxTimerCreate("HeartbeatTimer", 1000, pdFALSE, NULL, HeartbeatCallback);

BxTimerCreate("HeartbeatTimer", pdMS_TO_TICKS(1000), pdTRUE, NULL, HeartbeatCallback);

CxTimerCreate("HeartbeatTimer", 1000, pdTRUE, NULL, HeartbeatCallback);

DxTimerCreate("HeartbeatTimer", pdMS_TO_TICKS(1000), pdFALSE, NULL, HeartbeatCallback);

Step-by-Step Solution

Solution:

Step 1: Understand timer parameters
pdMS_TO_TICKS converts ms to ticks; pdTRUE means auto-reload (periodic).
Step 2: Check correct syntax for periodic 1000 ms timer
xTimerCreate("HeartbeatTimer", pdMS_TO_TICKS(1000), pdTRUE, NULL, HeartbeatCallback); uses pdMS_TO_TICKS(1000) and pdTRUE for periodic timer.
Final Answer:
xTimerCreate("HeartbeatTimer", pdMS_TO_TICKS(1000), pdTRUE, NULL, HeartbeatCallback); -> Option B
Quick Check:
Periodic timer needs pdMS_TO_TICKS + pdTRUE [OK]

Quick Trick: Use pdMS_TO_TICKS for ms to ticks conversion [OK]

Common Mistakes:

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