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Series
In this series, I will talk about RTOS.
RTOSGPOS Where to useTiming critical applications(i.e. airbag deployment after the crash, VxWorks, FreeRTOS)Desktop and server applications(i.e. Windows, Linux, iOS) Task switching Latency and Response timeAlmost constant(deterministic)Big deviat...
Pre-emptive Round robin Given the time slice, the scheduler will choose which task to run as planned. The fixed pattern will be repeated. Each task could be not completed by the time slice if the task needs more time. It will continue with the nex...
reference Stack pointer in cortex Mx process will point to either SP_process or SP_main. What are SP_process and SP_main? SP_process = PSP(Process Stack Pointer) = Task's private stack SP_main = MSP(Main Stack Pointer) = Kernel stack RTOS schedul...
In a real-time operating system (RTOS), typically, many tasks are created and run by a scheduler. The task state represents the various stages a task can be in during its lifecycle. The task states can be divided into two different groups: Running st...
Last time, I talked about the RTOS task state. This time, I'd like to talk about one of the task controls, delay. There are three delay functions are provided; vTaskDelay(), vTaskDelayUntil(), xTaskDelayUntil(). However, to use these functions, you n...
