|
|||||||||||||||
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
Can returning senmarphore carry dataPosted by Anuradha on March 28, 2011 In FreeRTOS is there an API version of "xSemaphoreGiveFromISR" which will allow the semaphore to return some value to the function in which it is returning? That is think of a function is waiting for, I2C Event interrupts. Once an event (may be EV5) occurs it can be identified by reading status registers, and when the semaphore returns from ISR can it carry the details of which event was occurred to the waiting function? Does OpenRTOS has this facility? Thanks Anuradha RE: Can returning senmarphore carry dataPosted by Dave on March 28, 2011 Semaphores don't carry data. Queues and semaphores are really the same thing. You could then use a queue in place of the semaphore, and post the data value to the queue (using an ISR safe queue send function) instead of using the semaphore give function. At the other end your task can block on a queue read instead of a semaphore take to receive the data value.
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.
