μC/OS-II experiment: basic management of Experiment 1

The learning material for the μC/OS-II is poked here. General tutorial Code Description: Experiment Code Template (mdk4.70)Note: The app here is the code of the last experiment. It is okay to copy the code as described below. You can also start from the last one. Involved μC/OS-II system function :... Reference materials and supporting code: uCOS-II experiment guide ucos_demo Note: It is correct to refer to this document, but there are some problems with the concept or code of several experiments (almost every ⊙ B Khan, I have pointed it out later (maybe some of my points are also wrong). If you don't know it, you can make a comparison.

It is recommended that you assign values to the project, and debug and modify the codes. You can also view the serial port data output in the usart of the simulator.Experiment code: App. c

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Void task0 (void * pdata) { Int8u err; While (1) { Printf ("application tasks switched % d times! \ R \ n ", ++ count ); Printf ("task_0 is running ............................. \ r \ n "); Printf ("task_1 is suincluded! \ R \ n "); Printf ("************************************* * ********* \ r \ n "); Err = ostasksuspend (OS _prio_self); // suspend itself } } Void task1 (void * pdata) { Int8u err; While (1) { Ostimedly (1000 ); Printf ("application tasks switched % d times! \ R \ n ", ++ count ); Printf ("task_0 is suincluded! \ R \ n "); Printf ("task_1 is running .............................. \ r \ n "); Printf ("************************************* * ********* \ r \ n "); Ostimedly (1000 ); Err = ostaskresume (task0_task_prio);/* resume task0 */ } }

App. h

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Global int32u count;

App_cfg.h

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# Define task0_stk_size 64 # Define task1_stk_size 64 # Define task0_task_prio 4 # Define taskdetailtask_prio 5 # Ifdef global_stask_define # Define global # Else # Define global extern # Endif Global OS _stk task_task0_stk [task0_stk_size]; Global OS _stk task_task1_stk [task1_stk_size]; Void task0 (void * pdata ); Void task1 (void * pdata );

Main. c

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// Start the task Static void taskstart (void * pdata) { Pdata = pdata; // App Initialization // The system clock must be called after osstart () Systick_configuration (); # If (OS _task_stat_en> 0) Osstatinit (); # Endif /* Basic management of Experiment 1 */ Ostaskcreate (task0, (void *) & taskdata [0], (OS _stk *) & task_task0_stk [TASK0_STK_SIZE-1], task0_task_prio ); Ostaskcreate (task1, (void *) & taskdata [1], (OS _stk *) & task_task1_stk [TASK1_STK_SIZE-1], task1_task_prio ); // Delete yourself after creating other tasks Ostaskdel (OS _prio_self ); }

Experiment results: Note: The heartbeat ick_configuration must be called after osstart (preferably in the taskstart task of the startup task-good habits). Otherwise, the consequences are unknown, because you have opened the interrupt before the system is started, and the system does not know what to do.