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UCOS III learning notes - time slice rotation

2022-07-18 22:14:00 【Your husband_ one thousand and sixteen】

One 、 Configure time slice rotation

#define OS_CFG_SCHED_ROUND_ROBIN_EN     1u   /* Include code for Round-Robin scheduling                               */

Two 、 Initialize the time slice correlation function

void OSSchedRoundRobinCfg (CPU_BOOLEAN en,
                           OS_TICK dflt_time_quanta,
                           OS_ERR *p_err)

/*
     Parameters ：
    1. Whether to enable 
    2. Time slice size 
    3. Wrong value 
*/

3、 ... and 、 Create tasks with the same priority , Implement time slice rotation

 If the creation task is set to non 0, Run this task at this time , If 0, Just run according to the rotation time of the initialization time slice 
              (OS_TICK     )1000u,

Four 、 test method

It can be used without giving up cpu Use the delay function of weight to check , If the counting delay is applied , Time slice rotation scheduling cpu Then the rotation of time slice is successful （ Under the same priority ）.

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