Task priority configuration, the configured priority range is [0,255].
Among them, [0,253] is a normal low-priority task, 254 is a high preemptive task, and 255 is an urgent preemptive task.
The higher the priority of a task, the higher it is in the priority queue, and the earlier the task will run.
UCP provides nested preemption capabilities, the preemption order is: urgent preemptive task > high preemptive task > normal low-priority task. Please refer to Model Priority Control.