Quality RTOS & Embedded Software

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


xSemaphoreGiveFromISR macro problem

Posted by ogh on March 20, 2015

Dear All,

I'm using FreeRTOS V8.2.0 and I've some trouble using xSemaphoreGiveFromISR macro (defined in semphr.h)

the macro is defined as: #define xSemaphoreGiveFromISR( xSemaphore, pxHigherPriorityTaskWoken ) xQueueGiveFromISR( ( QueueHandle_t ) ( xSemaphore ), ( pxHigherPriorityTaskWoken ) )

But xQueueGiveFromISR function doesn't exist anymore in queue.c file

In v 7.6.0 this macro was define by xQueueGenericSendFromISR.

Is it a bug in the new version.

Thanks in advance


xSemaphoreGiveFromISR macro problem

Posted by rtel on March 20, 2015

I suspect your problem is caused by mixing up source files from different FreeRTOS versions. What is the version number at the top of the semphr.h header file, and what is the version number at the top of the queue.c and queue.h source files?


xSemaphoreGiveFromISR macro problem

Posted by ogh on March 20, 2015

Like we says in French "Oooups" You're right. The version of Queue.c (and all file in source dir) was 8.1.2

Thanks in advance

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

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

Latest News

NXP tweet showing LPC5500 (ARMv8-M Cortex-M33) running FreeRTOS.

Meet Richard Barry and learn about running FreeRTOS on RISC-V at FOSDEM 2019

Version 10.1.1 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