Quality RTOS & Embedded Software

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


Loading

Static task memory allocation issue (FREERTOS 9.0.0)

Posted by aseris on March 27, 2017

There is a mistake in official example for static memory allocation for IDLE task and Timers task. http://www.freertos.org/a00110.html#configSUPPORTSTATICALLOCATION

Found this issue when task list becomes corrupted and I start figure outing what happened with debug plugin in IDE.

The issue is in lines static StaticTask_t xIdleTaskTCB; static StackTypet uxIdleTaskStack[ configMINIMALSTACK_SIZE ];

and

static StaticTask_t xTimerTaskTCB; static StackTypet uxTimerTaskStack[ configTIMERTASKSTACKDEPTH ];

the example proposes to allocate only 1/2/4 bytes of RAM to store TBC_t structure which is >100 bytes long

Example code "works" until allocated stack is enough big and stack overflow check algorithms did not turned on.

the correct code could be

staticTCB_t xIdleTaskTCB;

But, type xIdleTaskTCB is described inside tasks.c.


Static task memory allocation issue (FREERTOS 9.0.0)

Posted by aseris on March 27, 2017

Sorry, incorrectly read StaticTaskt as StackTypet . No issue.


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




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

Latest News

Meet us at Embedded World. Hall 3A-525.

Hear from Richard Barry at Embedded World. Feb 28, 16:00, Hall 4-428.

Video: Watch James Gosling & Richard Barry at re:Invent, Las Vegas 2017.

FreeRTOS kernel V10.0.1 is available for immediate download. Now MIT licensed.


FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

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