Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem


FreeRTOS Memory usage calculation

Posted by engmmostafa80 on April 13, 2014

I want to know how to calculate the amount of used memory heap allocated to the FreeRTOS in order to check if I reached its limit or not. For example I created 3 tasks, 10 Queues, 2 binary semaphores. Task Name Len 16, Minimal stack size 70.

FreeRTOS Memory usage calculation

Posted by davedoors on April 13, 2014

Call xPortGetFreeHeapSize(), create your tasks queues semaphores etc. then call xPortGetFreeHeapSize() again to find the difference. http://www.freertos.org/a00111.html

FreeRTOS Memory usage calculation

Posted by dueringa on April 15, 2014

Actually, there's also xPortGetMinimumEverFreeHeapSize() but only when using heap4

[ Back to the top ]    [ About FreeRTOS ]    [ Privacy ]    [ Sitemap ]    [ ]

Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.

Latest News

Version 10.1.0 of the FreeRTOS kernel is available for immediate download. MIT licensed.

View a recording of the "OTA Update Security and Reliability" webinar, presented by TI and AWS.


FreeRTOS and other embedded software careers at AWS.

FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Espressif ESP32

IAR Partner

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers


STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

OpenRTOS and SafeRTOS

Xilinx Microblaze and Zynq partner