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CC1310- TI RTOS 相关困惑，请理解TI RTOS工作的朋友帮解惑？？！！

WH HUANG
Expert 1330 points 



    // Initialize client state & variables
    memset(&pObj->state, 0, sizeof(pObj->state));

    // Initialize client semaphore and clock object
    union {
        Semaphore_Params sp;
        Clock_Params cp;
    } paramsUnion;

    Semaphore_Params_init(&paramsUnion.sp);
    paramsUnion.sp.mode = Semaphore_Mode_BINARY;
    Semaphore_construct(&pObj->state.semSync, 0, &paramsUnion.sp);
    Clock_Params_init(&paramsUnion.cp);
    paramsUnion.cp.arg = (UArg)pObj;
    Clock_construct(&pObj->state.clkInactivity, (Clock_FuncPtr)clkInactivityFxn, 0, &paramsUnion.cp);
  • 0
    Expert 1330 points 

    CC1310 例程中 RF_open() 里有这段，有几个里方让我困惑：
    1.   pObj->state 被清成0，，Clock_construct(&pObj->state.clkInactivity, (Clock_FuncPtr)clkInactivityFxn, 0, &paramsUnion.cp);  ？ 这里的 &pObj->state.clkInactivity, == NULL ??
    2. // Initialize client semaphore and clock object union { Semaphore_Params sp; Clock_Params cp; } paramsUnion;  联合？ 两类变量；
    还有 变量在函数里定义了，并初始化了，但是退出去不是又变不可见了。。。。


  • 0 回复 WH HUANG
    TI__Prodigy 230 points

    这个参数变量会在clock_construct中赋值到Clock_Object中去，所以局部变量也可以。