Quality RTOS & Embedded Software

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




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

Latest News

FreeRTOS kernel V10 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