FreeRTOS Support Archive
The 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.
This is a read only archive of threads posted to the FreeRTOS support forum.
The archive is updated every week, so will not always contain the very latest posts.
Use these archive pages to search previous posts. Use the Live FreeRTOS Forum
link to reply to a post, or start a new support thread.
[FreeRTOS Home] [Live FreeRTOS Forum] [FAQ] [Archive Top] [June 2017 Threads]
Hi,
I notify the low priority task from another task, with higher priority, using xTaskNotifyGive()/ulTaskNotifyTake().
It is not clear from manual if the task from which I make call xTaskNotifyGive (the higher task) will finish its work.
It would be very helpful if somebody can answer me claerly how this functin work, if it calls to context switch, if its work depends on priority task...
Many thanks
Valerie
FreeRTOS will always run the highest priority task that is able to run. When a task is blocked waiting for a notification it is not able to run, when it receives the notification it is waiting for it is able to run.
If the priority of the task giving the notification is higher than the priority of the task receiving the notification then the giving task will continue to run, because it has the highest priority.
If the priority of the task giving the notification is lower than the priority of the task receiving the notification then the receiving task will start running the moment the notification is received.
Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.