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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.
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Mutex and vTaskSuspendAllPosted by Sergio Prado on July 30, 2012 Hello all, I was wondering what is the difference between using a mutex and a vTaskSuspendAll() call. Why would I disable the scheduler to access a shared resource since I can use a mutex instead? Thanks in advance, Sergio Prado RE: Mutex and vTaskSuspendAllPosted by Richard Walters on July 31, 2012 vTaskSuspendAll stops the scheduler from switching tasks, whereas a mutex just suspends the tasks waiting for it until the mutex is available. In most cases, a mutex is preferable since it only blocks the few tasks that actually want the mutex, and doesn't prevent non-interested tasks from running. You only want to ever use vTaskSuspendAll in those rare cases where you absolutely need the current task to continue running without being preempted by other tasks. Generally in a well-designed system these cases are all going to be inside the kernel -- in FreeRTOS code itself. RE: Mutex and vTaskSuspendAllPosted by Sergio Prado on July 31, 2012 Perfect Richard, thanks!
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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.
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FreeRTOS and other embedded software careers at AWS.
