How FreeRTOS Manages Time: An Analysis of Tick, Interrupts, and Scheduling Mechanisms

How FreeRTOS Manages Time: An Analysis of Tick, Interrupts, and Scheduling Mechanisms

Table of Contents Background and Overview Source and Configuration of Tick Timer 2.1 <span>configTICK_RATE_HZ</span> 2.2 Hardware Timer & <span>vPortSetupTimerInterrupt</span> Processing Flow of Tick Interrupt 3.1 Interrupt Entry and FreeRTOS Hook 3.2 Time Statistics and Delay Management Time Slicing and Dynamic Priority Scheduling 4.1 Preemptive vs. Cooperative Kernel 4.2 Round Robin Scheduling Context Switching Mechanism 5.1 … Read more

The Basis for FreeRTOS Task Allocation

The Basis for FreeRTOS Task Allocation

The Core Role of the FreeRTOS Idle Task ‌Maintaining Minimum System Operation Guarantee‌ Automatically created after the scheduler starts, with the lowest priority (usually 0), ensuring that there is always a task for the system to execute. When all user tasks are blocked or suspended, the idle task takes over the CPU to avoid an … Read more