UCOSII軟體定時器

API函數

//建立OS_TMR *OSTmrCreate (INT32U dly,                     INT32U period,                     INT8U opt,                     OS_TMR_CALLBACK callback,                     void *callback_arg,                     INT8U *pname,                     INT8U *perr);//刪除BOOLEAN OSTmrDel (OS_TMR *ptmr,                  INT8U *perr);//定時器名字INT8U OSTmrNameGet (OS_TMR *ptmr,                    INT8U **pdest,                    INT8U *perr);//溢出時間INT32U OSTmrRemainGet (OS_TMR *ptmr,                       INT8U *perr);//定時器狀態INT8U OSTmrStateGet (OS_TMR *ptmr,                     INT8U *perr);//啟動BOOLEAN OSTmrStart (OS_TMR *ptmr,                    INT8U *perr);//關閉BOOLEAN OSTmrStop (OS_TMR *ptmr,                   INT8U opt,                   void *callback_arg,                   INT8U *perr);//發送訊號INT8U OSTmrSignal (void);

應用舉例

OS_TMR *tmr;void start_task(void *pdata){    OS_ENTER_CRITICAL();    tmr = OSTmrCreate ((INT32U )0,                        (INT32U  )50, //50*100ms                        (INT8U   )OS_TMR_OPT_PERIODIC,                        (OS_TMR_CALLBACK)tmr_callback,                        (void   *)0,                        (INT8U  *)"tmr",                        (INT8U  *)&err);    OS_EXIT_CRITICAL();    OSTmrStart(msg->tmr, &err);}void tmr_callback(void *ptmr, void *parg){    INT32U remain;    remain = OSTmrRemainGet(ptmr, &err);    if(remain <= 5)    {        printf("tmr_callback OSTmrRemainGet remain err: %d\r\n", remain);        return;    }}