coocox / coos Goto Github PK

CooCox CoOS is an embedded real-time multi-task OS specially for ARM Cortex M series.

License: Other

C 98.09% C++ 1.47% Assembly 0.37% Objective-C 0.05% Shell 0.02% COBOL 0.01%

coos's Issues

interrupt latency

The documentation states that there's 0 interrupt latency.
Looking at the code however I notice that interrupts get disabled briefly. So interrupt latency is not 0, is that correct?
Is it technically impossible to achieve 0 latency? What's the problem?

Error with CoPendSem with timeout

CoPendSem does not work with timeout in all situations.
curTCB->pmail = Co_NULL; needs to be added on line 243 in sem.c

        /* Block task until event or timeout occurs                       */
        EventTaskToWait(pecb,curTCB);
        InsertDelayList(curTCB,timeout);
        curTCB->pmail = Co_NULL; <------ ADD THIS
        OsSchedUnlock();
        if (curTCB->pmail == Co_NULL)  /* If pmail is Co_NULL, time-out occurred*/
        {
          return E_TIMEOUT; 
        }                               
        else                  /* Event occurred or event have been deleted*/    
        {
            OsSchedLock();
            curTCB->pmail = Co_NULL;
            pecb->eventCounter--; 
            OsSchedUnlock();
            return E_OK;    
        }

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