Ucos Clock and interrupts:

1: Interrupt handler function: OSTICKISR ()//Its call to Ostimetick (),

The 2ucosii clock beats 10~100hz and the clock beats are turned on after Osstart. After each clock beat, the clock interrupt function adds 1 to the timer, while traversing all the deferred task function blocks to reduce its delay by one and make the deferred task go into readiness.

3 Task delay: UCOSII rules: Any task outside the idle task is to call a time delay function, in order to perform a task scheduling, let out the CPU use.

4 Get and set the system time: After Osstart, start each clock beat increment one through function good can get and reset change in, time.

Interrupts and shielding interrupts: there are three ways to enter the critical section to protect the code from interruption

Ucos Clock and interrupts: