Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Real time embedded FreeRTOS mailing list 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training


uxQueueNumber not initialized

Posted by ammaree on August 23, 2015

I am using FreeRTOS v8.2.2 and in my process of building a set of trace macros and routines I have discovered that pxNewQueue->uxQueueNumber is not initialized to a known value (0) in xQueueGenericCreate() around line 375.

The problem showed itself when the traceQUEUE_CREATE() is called immediately afterwards and, expecting the uxQueueNumber to be 0 it returns random values.

Is this a bug or is there some reason behind it?

On a related topic, I also cannot find any functionality to retrieve the queue name from the registry. Any suggestions ?


uxQueueNumber not initialized

Posted by rtel on August 23, 2015

It is an interesting point you raise:

uxQueueNumber is provided purely for use by trace tools, and thus far has been set by the trace code, rather than the RTOS code. You can see the definition of TRACESETOBJECT_NUMBER in FreeRTOS-PlusSourceFreeRTOS-Plus-TraceIncludetrcKernelPort.h. However, perhaps it should be initialised to something - althoug just initialising it to 0 is not going to be helpful and initialising it to anything else might not be correct for whichever library is providing the trace macros.


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

Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.

Free TCP/IP and file system demos for the RTOS

Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑

FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

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

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

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

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists