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




Loading

Querying the count value of a counting semaphore

Posted by jim-frenzel on October 27, 2015

I am running FreeRTOS version 8.2.2 and am wondering why there is no function provided to get the count value of a counting semaphore. While I did find a workaround - cast the handle as a queue handle and use uxQueueMessages Waiting() - it seems like having a dedicated function would be worthwhile. Any thoughts?


Querying the count value of a counting semaphore

Posted by rtel on October 27, 2015

Any of the queue functions can be used on semahores too. I can add a "get current count" macro that calls the queue function.

Regards.


Querying the count value of a counting semaphore

Posted by jim-frenzel on October 27, 2015

I think that would be great - particularly if it found its way into the documentation. :-)


Querying the count value of a counting semaphore

Posted by rtel on October 28, 2015

I have added the line:

define xSemaphoreGetCount( xSemaphore ) uxQueueMessagesWaiting( (

QueueHandle_t ) ( xSemaphore ) )

but not checked it in yet. It will get checked in after it has been tested.

Regards.


[ 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