Renesas M3T-MR100 用户手册

   

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The task control block (TCB) refers to the data block that the real-time OS uses for individual task status, priority, and oth-
er control purposes. 

The MR100 manages the following task information as the task control block 

• 

Task connection pointer 

Task connection pointer used for ready queue formation or other purposes.   

• 

Task status 

• 

Task priority 

• 

Task register information and other data

  storage stack area pointer(current SP value)   

• 

Wake-up counter 

Task wake-up request storage area.   

• 

Flag wait mode 

This is a wait mode during eventflag wait.   

• 

Flag wait pattern 

This area stores the flag wait pattern when using the eventflag wait service call (wai_flg, twai_flg). No flag wait 
pattern area is allocated when the eventflag is not used. 

• 

Startup request counter 

This is the area in which task startup requests are accumulated. 

 

The task control block is schematized in Figure 3.20

. 

 

TCB 

TCB 

TCB 

Task Connection pointer

Status 

Priority 

Wake-up counter 

Flag wait mode 

Flag wait pattern 

Activation counter

 

This area is allocated only when 
the timeout function is used. 

SP 

 

 

                                                      

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  Called the task context