|
|||||||||||||||
FreeRTOS Support ArchiveThe FreeRTOS support forum is used to obtain active support directly from Real Time Engineers Ltd. In return for using our top quality software and services for free, we request you play fair and do your bit to help others too! Sign up to receive notifications of new support topics then help where you can.
Loading
use a semaphore as a flagPosted by barber colman on August 11, 2010 I meed to have a data good flag to use between to tasks. The examples use a binary semaphore to control access to a resource. It appears that the task with the data can creates a binary semaphore and take and gives it back if the data is good. The second task can attempt to take the task with a zero wait time. If the data is good it will be able to get the semaphore if the second task can not take the semaphore. Is this the proper way to use the binary semaphore as a flag? RE: use a semaphore as a flagPosted by Richard Damon on August 11, 2010 What you describe should work. While Binary semaphores can be used for this, in most cases using a mutex is better. One of the big advantage of a mutex is that if a high priority task waits on a mutex for a resource, and a lower priority task currently has it, the lower priority task is given a temporary boost in priority so the higher priority task can get the resource quicker.
Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.
|
|||||||||||||||
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.
