CMSIS-RTOS2  Version 2.1.2
Real-Time Operating System: API and RTX Reference Implementation
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Functions
Semaphore Functions
Event functions

Events generated by semaphore functions. More...

Functions

void EvrRtxSemaphoreError (osSemaphoreId_t semaphore_id, int32_t status)
 Event on semaphore error (Error) More...
 
void EvrRtxSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr)
 Event on semaphore create and initialize (API) More...
 
void EvrRtxSemaphoreCreated (osSemaphoreId_t semaphore_id, const char *name)
 Event on successful semaphore create (Op) More...
 
void EvrRtxSemaphoreGetName (osSemaphoreId_t semaphore_id, const char *name)
 Event on semaphore name retrieve (API) More...
 
void EvrRtxSemaphoreAcquire (osSemaphoreId_t semaphore_id, uint32_t timeout)
 Event on semaphore acquire (API) More...
 
void EvrRtxSemaphoreAcquirePending (osSemaphoreId_t semaphore_id, uint32_t timeout)
 Event on pending semaphore acquire (Op) More...
 
void EvrRtxSemaphoreAcquireTimeout (osSemaphoreId_t semaphore_id)
 Event on semaphore acquire timeout (Op) More...
 
void EvrRtxSemaphoreAcquired (osSemaphoreId_t semaphore_id)
 Event on successful semaphore acquire (Op) More...
 
void EvrRtxSemaphoreNotAcquired (osSemaphoreId_t semaphore_id)
 Event on unsuccessful semaphore acquire (Op) More...
 
void EvrRtxSemaphoreRelease (osSemaphoreId_t semaphore_id)
 Event on semaphore release (API) More...
 
void EvrRtxSemaphoreReleased (osSemaphoreId_t semaphore_id)
 Event on successful semaphore release (Op) More...
 
void EvrRtxSemaphoreGetCount (osSemaphoreId_t semaphore_id, uint32_t count)
 Event on semaphore token count retrieval (API) More...
 
void EvrRtxSemaphoreDelete (osSemaphoreId_t semaphore_id)
 Event on semaphore delete (API) More...
 
void EvrRtxSemaphoreDestroyed (osSemaphoreId_t semaphore_id)
 Event on successful semaphore delete (Op) More...
 

Description

Function Documentation

void EvrRtxSemaphoreError ( osSemaphoreId_t  semaphore_id,
int32_t  status 
)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew or NULL when ID is unknown.
[in]statusextended execution status.

The event SemaphoreError is generated when Semaphores routines complete their execution due to an error.

The status parameter indicates the execution status and can be one of the osStatus_t codes or one of the extended execution status codes which are summarized in the table below.

Extended Status Code Description
osRtxErrorKernelNotReady Kernel scheduler is not in Ready state.
osRtxErrorKernelNotRunning Kernel scheduler is not executing - there is no running thread.
osRtxErrorInvalidControlBlock Object control block with invalid alignment or size was specified.
osRtxErrorInvalidDataMemory Object data memory with invalid alignment or size was specified.
osRtxErrorInvalidThreadStack Thread stack memory with invalid alignment or size was specified.
osRtxErrorInvalidPriority Invalid thread priority was specified.
osRtxErrorThreadNotJoinable Specified thread is not joinable.
osRtxErrorMutexNotOwned Specified mutex is not owned by the current running thread.
osRtxErrorMutexNotLocked Specified mutex is not locked.
osRtxErrorMutexLockLimit Maximum number of recursive mutex locks reached.
osRtxErrorSemaphoreCountLimit Semaphore count limit reached.
osRtxErrorTZ_InitContext_S Secure context memory system initialization failed.
osRtxErrorTZ_AllocContext_S Secure context memory allocation failed.
osRtxErrorTZ_FreeContext_S Secure context memory deallocation failed.
osRtxErrorTZ_LoadContext_S Secure context load failed.
osRtxErrorTZ_SaveContext_S Secure context save failed.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
  • status : execution status code.
void EvrRtxSemaphoreNew ( uint32_t  max_count,
uint32_t  initial_count,
const osSemaphoreAttr_t *  attr 
)
Parameters
[in]max_countmaximum number of available tokens.
[in]initial_countinitial number of available tokens.
[in]attrsemaphore attributes.

The event SemaphoreNew is generated when the function osSemaphoreNew is called.

Value in the Event Recorder shows:

  • max_count : maximum number of available tokens.
  • initial_count : initial number of available tokens.
  • attr : memory address of Semaphore attributes or 0 when they are not specified.

In case when semaphore attributes are provided in the API call they are also detailed in the Event Recorder.

void EvrRtxSemaphoreCreated ( osSemaphoreId_t  semaphore_id,
const char *  name 
)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.
[in]namepointer to semaphore object name.

The event SemaphoreCreated is generated when the function osSemaphoreNew successfully creates a semaphore object.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreGetName ( osSemaphoreId_t  semaphore_id,
const char *  name 
)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.
[in]namepointer to semaphore object name.

The event SemaphoreGetName is generated when the function osSemaphoreGetName is called and its execution result is known.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
  • name : retrieved memory address of name string (0 in case of a failure).
void EvrRtxSemaphoreAcquire ( osSemaphoreId_t  semaphore_id,
uint32_t  timeout 
)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.
[in]timeoutTimeout Value or 0 in case of no time-out.

The event SemaphoreAcquire is generated when the function osSemaphoreAcquire is called.

Value in the Event Recorder shows:

void EvrRtxSemaphoreAcquirePending ( osSemaphoreId_t  semaphore_id,
uint32_t  timeout 
)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.
[in]timeoutTimeout Value or 0 in case of no time-out.

The event SemaphoreAcquirePending is generated when the function osSemaphoreAcquire blocks current running thread and waits for semaphore token to become available.

Value in the Event Recorder shows:

void EvrRtxSemaphoreAcquireTimeout ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreAcquireTimeout is generated when wait for semaphore to become available is aborted due to expired wait timeout.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreAcquired ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreAcquired is generated when the function osSemaphoreAcquire successfully acquires the semaphore token.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreNotAcquired ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreNotAcquired is generated when the function osMutexAcquire returns without timeout and semaphore token was not acquired.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreRelease ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreRelease is generated when the function osSemaphoreRelease is called.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreReleased ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreReleased is generated when the function osSemaphoreRelease successfully releases the semaphore token.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreGetCount ( osSemaphoreId_t  semaphore_id,
uint32_t  count 
)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.
[in]countcurrent number of available tokens.

The event SemaphoreGetCount is generated when the function osSemaphoreGetCount is called and its execution result is known.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
  • count : retrieved current number of available tokens.
void EvrRtxSemaphoreDelete ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreDelete is generated when the function osSemaphoreDelete is called.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.
void EvrRtxSemaphoreDestroyed ( osSemaphoreId_t  semaphore_id)
Parameters
[in]semaphore_idsemaphore ID obtained by osSemaphoreNew.

The event SemaphoreDestroyed is generated when the function osSemaphoreDelete successfully deletes the semaphore object.

Value in the Event Recorder shows:

  • semaphore_id : semaphore ID.