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Table C-11 shows the difference in API for mutual exclusion semaphore management.

µC/OS-II (os_mutex.c)	µC/OS-III (os_mutex.c)	Note
BOOLEAN OSMutexAccept( OS_EVENT pevent, INT8U perr);		(1)
OS_EVENT * OSMutexCreate( INT8U prio, INT8U *perr);	void OSMutexCreate( OS_MUTEX p_mutex, CPU_CHAR p_name, OS_ERR *p_err);	(2)
OS_EVENT * OSMutexDel( OS_EVENT pevent, INT8U opt, INT8U perr);	void OSMutexDel( OS_MUTEX p_mutex, OS_OPT opt, OS_ERR p_err);
void OSMutexPend( OS_EVENT pevent, INT32U timeout, INT8U perr);	void OSMutexPend( OS_MUTEX p_mutex, OS_TICK timeout, OS_OPT opt, CPU_TS p_ts, OS_ERR *p_err);	(3)
	OS_OBJ_QTY OSMutexPendAbort( OS_MUTEX p_mutex, OS_OPT opt, OS_ERR p_err);
INT8U OSMutexPost( OS_EVENT *pevent);	void OSMutexPost( OS_MUTEX p_mutex, OS_OPT opt, OS_ERR p_err);
INT8U OSMutexQuery( OS_EVENT pevent, OS_MUTEX_DATA p_mutex_data);		(4)

Table C-11 Mutual Exclusion Semaphore Management API

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