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/*

 * Copyright (c) 2013-2018 Arm Limited. All rights reserved.

 *

 * SPDX-License-Identifier: Apache-2.0

 *

 * Licensed under the Apache License, Version 2.0 (the License); you may

 * not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an AS IS BASIS, WITHOUT

 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 * ----------------------------------------------------------------------

 *

 * $Date:        18. June 2018

 * $Revision:    V2.1.3

 *

 * Project:      CMSIS-RTOS2 API

 * Title:        cmsis_os2.h header file

 *

 * Version 2.1.3

 *    Additional functions allowed to be called from Interrupt Service Routines:

 *    - osThreadGetId

 * Version 2.1.2

 *    Additional functions allowed to be called from Interrupt Service Routines:

 *    - osKernelGetInfo, osKernelGetState

 * Version 2.1.1

 *    Additional functions allowed to be called from Interrupt Service Routines:

 *    - osKernelGetTickCount, osKernelGetTickFreq

 *    Changed Kernel Tick type to uint32_t:

 *    - updated: osKernelGetTickCount, osDelayUntil

 * Version 2.1.0

 *    Support for critical and uncritical sections (nesting safe):

 *    - updated: osKernelLock, osKernelUnlock

 *    - added: osKernelRestoreLock

 *    Updated Thread and Event Flags:

 *    - changed flags parameter and return type from int32_t to uint32_t

 * Version 2.0.0

 *    Initial Release

 *---------------------------------------------------------------------------*/

#ifndef CMSIS_OS2_H_

#define CMSIS_OS2_H_

#ifndef __NO_RETURN

#if   defined(__CC_ARM)

#define __NO_RETURN __declspec(noreturn)

#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)

#define __NO_RETURN __attribute__((__noreturn__))

#elif defined(__GNUC__)

#define __NO_RETURN __attribute__((__noreturn__))

#elif defined(__ICCARM__)

#define __NO_RETURN __noreturn

#else

#define __NO_RETURN

#endif

#endif

#include <stdint.h>

#include <stddef.h>

#ifdef  __cplusplus

extern "C"

{

#endif

//  ==== Enumerations, structures, defines ====

/// Version information.

typedef struct {

  uint32_t                       api;   ///< API version (major.minor.rev: mmnnnrrrr dec).

  uint32_t                    kernel;   ///< Kernel version (major.minor.rev: mmnnnrrrr dec).

} osVersion_t;

/// Kernel state.

typedef enum {

  osKernelInactive        =  0,         ///< Inactive.

  osKernelReady           =  1,         ///< Ready.

  osKernelRunning         =  2,         ///< Running.

  osKernelLocked          =  3,         ///< Locked.

  osKernelSuspended       =  4,         ///< Suspended.

  osKernelError           = -1,         ///< Error.

  osKernelReserved        = 0x7FFFFFFFU ///< Prevents enum down-size compiler optimization.

} osKernelState_t;

/// Thread state.

typedef enum {

  osThreadInactive        =  0,         ///< Inactive.

  osThreadReady           =  1,         ///< Ready.

  osThreadRunning         =  2,         ///< Running.

  osThreadBlocked         =  3,         ///< Blocked.

  osThreadTerminated      =  4,         ///< Terminated.

  osThreadError           = -1,         ///< Error.

  osThreadReserved        = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.

} osThreadState_t;

/// Priority values.

typedef enum {

  osPriorityNone          =  0,         ///< No priority (not initialized).

  osPriorityIdle          =  1,         ///< Reserved for Idle thread.

  osPriorityLow           =  8,         ///< Priority: low

  osPriorityLow1          =  8+1,       ///< Priority: low + 1

  osPriorityLow2          =  8+2,       ///< Priority: low + 2

  osPriorityLow3          =  8+3,       ///< Priority: low + 3

  osPriorityLow4          =  8+4,       ///< Priority: low + 4

  osPriorityLow5          =  8+5,       ///< Priority: low + 5

  osPriorityLow6          =  8+6,       ///< Priority: low + 6

  osPriorityLow7          =  8+7,       ///< Priority: low + 7

  osPriorityBelowNormal   = 16,         ///< Priority: below normal

  osPriorityBelowNormal1  = 16+1,       ///< Priority: below normal + 1

  osPriorityBelowNormal2  = 16+2,       ///< Priority: below normal + 2

  osPriorityBelowNormal3  = 16+3,       ///< Priority: below normal + 3

  osPriorityBelowNormal4  = 16+4,       ///< Priority: below normal + 4

  osPriorityBelowNormal5  = 16+5,       ///< Priority: below normal + 5

  osPriorityBelowNormal6  = 16+6,       ///< Priority: below normal + 6

  osPriorityBelowNormal7  = 16+7,       ///< Priority: below normal + 7

  osPriorityNormal        = 24,         ///< Priority: normal

  osPriorityNormal1       = 24+1,       ///< Priority: normal + 1

  osPriorityNormal2       = 24+2,       ///< Priority: normal + 2

  osPriorityNormal3       = 24+3,       ///< Priority: normal + 3

  osPriorityNormal4       = 24+4,       ///< Priority: normal + 4

  osPriorityNormal5       = 24+5,       ///< Priority: normal + 5

  osPriorityNormal6       = 24+6,       ///< Priority: normal + 6

  osPriorityNormal7       = 24+7,       ///< Priority: normal + 7

  osPriorityAboveNormal   = 32,         ///< Priority: above normal

  osPriorityAboveNormal1  = 32+1,       ///< Priority: above normal + 1

  osPriorityAboveNormal2  = 32+2,       ///< Priority: above normal + 2

  osPriorityAboveNormal3  = 32+3,       ///< Priority: above normal + 3

  osPriorityAboveNormal4  = 32+4,       ///< Priority: above normal + 4

  osPriorityAboveNormal5  = 32+5,       ///< Priority: above normal + 5

  osPriorityAboveNormal6  = 32+6,       ///< Priority: above normal + 6

  osPriorityAboveNormal7  = 32+7,       ///< Priority: above normal + 7

  osPriorityHigh          = 40,         ///< Priority: high

  osPriorityHigh1         = 40+1,       ///< Priority: high + 1

  osPriorityHigh2         = 40+2,       ///< Priority: high + 2

  osPriorityHigh3         = 40+3,       ///< Priority: high + 3

  osPriorityHigh4         = 40+4,       ///< Priority: high + 4

  osPriorityHigh5         = 40+5,       ///< Priority: high + 5

  osPriorityHigh6         = 40+6,       ///< Priority: high + 6

  osPriorityHigh7         = 40+7,       ///< Priority: high + 7

  osPriorityRealtime      = 48,         ///< Priority: realtime

  osPriorityRealtime1     = 48+1,       ///< Priority: realtime + 1

  osPriorityRealtime2     = 48+2,       ///< Priority: realtime + 2

  osPriorityRealtime3     = 48+3,       ///< Priority: realtime + 3

  osPriorityRealtime4     = 48+4,       ///< Priority: realtime + 4

  osPriorityRealtime5     = 48+5,       ///< Priority: realtime + 5

  osPriorityRealtime6     = 48+6,       ///< Priority: realtime + 6

  osPriorityRealtime7     = 48+7,       ///< Priority: realtime + 7

  osPriorityISR           = 56,         ///< Reserved for ISR deferred thread.

  osPriorityError         = -1,         ///< System cannot determine priority or illegal priority.

  osPriorityReserved      = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.

} osPriority_t;

/// Entry point of a thread.

typedef void (*osThreadFunc_t) (void *argument);

/// Timer callback function.

typedef void (*osTimerFunc_t) (void *argument);

/// Timer type.

typedef enum {

  osTimerOnce               = 0,          ///< One-shot timer.

  osTimerPeriodic           = 1           ///< Repeating timer.

} osTimerType_t;

// Timeout value.

#define osWaitForever         0xFFFFFFFFU ///< Wait forever timeout value.

// Flags options (\ref osThreadFlagsWait and \ref osEventFlagsWait).

#define osFlagsWaitAny        0x00000000U ///< Wait for any flag (default).

#define osFlagsWaitAll        0x00000001U ///< Wait for all flags.

#define osFlagsNoClear        0x00000002U ///< Do not clear flags which have been specified to wait for.

// Flags errors (returned by osThreadFlagsXxxx and osEventFlagsXxxx).

#define osFlagsError          0x80000000U ///< Error indicator.

#define osFlagsErrorUnknown   0xFFFFFFFFU ///< osError (-1).

#define osFlagsErrorTimeout   0xFFFFFFFEU ///< osErrorTimeout (-2).

#define osFlagsErrorResource  0xFFFFFFFDU ///< osErrorResource (-3).

#define osFlagsErrorParameter 0xFFFFFFFCU ///< osErrorParameter (-4).

#define osFlagsErrorISR       0xFFFFFFFAU ///< osErrorISR (-6).

// Thread attributes (attr_bits in \ref osThreadAttr_t).

#define osThreadDetached      0x00000000U ///< Thread created in detached mode (default)

#define osThreadJoinable      0x00000001U ///< Thread created in joinable mode

// Mutex attributes (attr_bits in \ref osMutexAttr_t).

#define osMutexRecursive      0x00000001U ///< Recursive mutex.

#define osMutexPrioInherit    0x00000002U ///< Priority inherit protocol.

#define osMutexRobust         0x00000008U ///< Robust mutex.

/// Status code values returned by CMSIS-RTOS functions.

typedef enum {

  osOK                      =  0,         ///< Operation completed successfully.

  osError                   = -1,         ///< Unspecified RTOS error: run-time error but no other error message fits.

  osErrorTimeout            = -2,         ///< Operation not completed within the timeout period.

  osErrorResource           = -3,         ///< Resource not available.

  osErrorParameter          = -4,         ///< Parameter error.

  osErrorNoMemory           = -5,         ///< System is out of memory: it was impossible to allocate or reserve memory for the operation.

  osErrorISR                = -6,         ///< Not allowed in ISR context: the function cannot be called from interrupt service routines.

  osStatusReserved          = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.

} osStatus_t;

/// \details Thread ID identifies the thread.

typedef void *osThreadId_t;

/// \details Timer ID identifies the timer.

typedef void *osTimerId_t;

/// \details Event Flags ID identifies the event flags.

typedef void *osEventFlagsId_t;

/// \details Mutex ID identifies the mutex.

typedef void *osMutexId_t;

/// \details Semaphore ID identifies the semaphore.

typedef void *osSemaphoreId_t;

/// \details Memory Pool ID identifies the memory pool.

typedef void *osMemoryPoolId_t;

/// \details Message Queue ID identifies the message queue.

typedef void *osMessageQueueId_t;

#ifndef TZ_MODULEID_T

#define TZ_MODULEID_T

/// \details Data type that identifies secure software modules called by a process.

typedef uint32_t TZ_ModuleId_t;

#endif

/// Attributes structure for thread.

typedef struct {

  const char                   *name;   ///< name of the thread

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

  void                   *stack_mem;    ///< memory for stack

  uint32_t                stack_size;   ///< size of stack

  osPriority_t              priority;   ///< initial thread priority (default: osPriorityNormal)

  TZ_ModuleId_t            tz_module;   ///< TrustZone module identifier

  uint32_t                  reserved;   ///< reserved (must be 0)

} osThreadAttr_t;

/// Attributes structure for timer.

typedef struct {

  const char                   *name;   ///< name of the timer

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

} osTimerAttr_t;

/// Attributes structure for event flags.

typedef struct {

  const char                   *name;   ///< name of the event flags

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

} osEventFlagsAttr_t;

/// Attributes structure for mutex.

typedef struct {

  const char                   *name;   ///< name of the mutex

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

} osMutexAttr_t;

/// Attributes structure for semaphore.

typedef struct {

  const char                   *name;   ///< name of the semaphore

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

} osSemaphoreAttr_t;

/// Attributes structure for memory pool.

typedef struct {

  const char                   *name;   ///< name of the memory pool

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

  void                      *mp_mem;    ///< memory for data storage

  uint32_t                   mp_size;   ///< size of provided memory for data storage 

} osMemoryPoolAttr_t;

/// Attributes structure for message queue.

typedef struct {

  const char                   *name;   ///< name of the message queue

  uint32_t                 attr_bits;   ///< attribute bits

  void                      *cb_mem;    ///< memory for control block

  uint32_t                   cb_size;   ///< size of provided memory for control block

  void                      *mq_mem;    ///< memory for data storage

  uint32_t                   mq_size;   ///< size of provided memory for data storage 

} osMessageQueueAttr_t;

//  ==== Kernel Management Functions ====

/// Initialize the RTOS Kernel.

/// \return status code that indicates the execution status of the function.

osStatus_t osKernelInitialize (void);

///  Get RTOS Kernel Information.

/// \param[out]    version       pointer to buffer for retrieving version information.

/// \param[out]    id_buf        pointer to buffer for retrieving kernel identification string.

/// \param[in]     id_size       size of buffer for kernel identification string.

/// \return status code that indicates the execution status of the function.

osStatus_t osKernelGetInfo (osVersion_t *version, char *id_buf, uint32_t id_size);

/// Get the current RTOS Kernel state.

/// \return current RTOS Kernel state.

osKernelState_t osKernelGetState (void);

/// Start the RTOS Kernel scheduler.

/// \return status code that indicates the execution status of the function.

osStatus_t osKernelStart (void);

/// Lock the RTOS Kernel scheduler.

/// \return previous lock state (1 - locked, 0 - not locked, error code if negative).

int32_t osKernelLock (void);

/// Unlock the RTOS Kernel scheduler.

/// \return previous lock state (1 - locked, 0 - not locked, error code if negative).

int32_t osKernelUnlock (void);

/// Restore the RTOS Kernel scheduler lock state.

/// \param[in]     lock          lock state obtained by \ref osKernelLock or \ref osKernelUnlock.

/// \return new lock state (1 - locked, 0 - not locked, error code if negative).

int32_t osKernelRestoreLock (int32_t lock);

/// Suspend the RTOS Kernel scheduler.

/// \return time in ticks, for how long the system can sleep or power-down.

uint32_t osKernelSuspend (void);

/// Resume the RTOS Kernel scheduler.

/// \param[in]     sleep_ticks   time in ticks for how long the system was in sleep or power-down mode.

void osKernelResume (uint32_t sleep_ticks);

/// Get the RTOS kernel tick count.

/// \return RTOS kernel current tick count.

uint32_t osKernelGetTickCount (void);

/// Get the RTOS kernel tick frequency.

/// \return frequency of the kernel tick in hertz, i.e. kernel ticks per second.

uint32_t osKernelGetTickFreq (void);

/// Get the RTOS kernel system timer count.

/// \return RTOS kernel current system timer count as 32-bit value.

uint32_t osKernelGetSysTimerCount (void);

/// Get the RTOS kernel system timer frequency.

/// \return frequency of the system timer in hertz, i.e. timer ticks per second.

uint32_t osKernelGetSysTimerFreq (void);

//  ==== Thread Management Functions ====

/// Create a thread and add it to Active Threads.

/// \param[in]     func          thread function.

/// \param[in]     argument      pointer that is passed to the thread function as start argument.

/// \param[in]     attr          thread attributes; NULL: default values.

/// \return thread ID for reference by other functions or NULL in case of error.

osThreadId_t osThreadNew (osThreadFunc_t func, void *argument, const osThreadAttr_t *attr);

/// Get name of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return name as null-terminated string.

const char *osThreadGetName (osThreadId_t thread_id);

/// Return the thread ID of the current running thread.

/// \return thread ID for reference by other functions or NULL in case of error.

osThreadId_t osThreadGetId (void);

/// Get current thread state of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return current thread state of the specified thread.

osThreadState_t osThreadGetState (osThreadId_t thread_id);

/// Get stack size of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return stack size in bytes.

uint32_t osThreadGetStackSize (osThreadId_t thread_id);

/// Get available stack space of a thread based on stack watermark recording during execution.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return remaining stack space in bytes.

uint32_t osThreadGetStackSpace (osThreadId_t thread_id);

/// Change priority of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \param[in]     priority      new priority value for the thread function.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadSetPriority (osThreadId_t thread_id, osPriority_t priority);

/// Get current priority of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return current priority value of the specified thread.

osPriority_t osThreadGetPriority (osThreadId_t thread_id);

/// Pass control to next thread that is in state \b READY.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadYield (void);

/// Suspend execution of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadSuspend (osThreadId_t thread_id);

/// Resume execution of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadResume (osThreadId_t thread_id);

/// Detach a thread (thread storage can be reclaimed when thread terminates).

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadDetach (osThreadId_t thread_id);

/// Wait for specified thread to terminate.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadJoin (osThreadId_t thread_id);

/// Terminate execution of current running thread.

__NO_RETURN void osThreadExit (void);

/// Terminate execution of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \return status code that indicates the execution status of the function.

osStatus_t osThreadTerminate (osThreadId_t thread_id);

/// Get number of active threads.

/// \return number of active threads.

uint32_t osThreadGetCount (void);

/// Enumerate active threads.

/// \param[out]    thread_array  pointer to array for retrieving thread IDs.

/// \param[in]     array_items   maximum number of items in array for retrieving thread IDs.

/// \return number of enumerated threads.

uint32_t osThreadEnumerate (osThreadId_t *thread_array, uint32_t array_items);

//  ==== Thread Flags Functions ====

/// Set the specified Thread Flags of a thread.

/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.

/// \param[in]     flags         specifies the flags of the thread that shall be set.

/// \return thread flags after setting or error code if highest bit set.

uint32_t osThreadFlagsSet (osThreadId_t thread_id, uint32_t flags);

/// Clear the specified Thread Flags of current running thread.

/// \param[in]     flags         specifies the flags of the thread that shall be cleared.

/// \return thread flags before clearing or error code if highest bit set.

uint32_t osThreadFlagsClear (uint32_t flags);

/// Get the current Thread Flags of current running thread.

/// \return current thread flags.

uint32_t osThreadFlagsGet (void);

/// Wait for one or more Thread Flags of the current running thread to become signaled.

/// \param[in]     flags         specifies the flags to wait for.

/// \param[in]     options       specifies flags options (osFlagsXxxx).

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return thread flags before clearing or error code if highest bit set.

uint32_t osThreadFlagsWait (uint32_t flags, uint32_t options, uint32_t timeout);

//  ==== Generic Wait Functions ====

/// Wait for Timeout (Time Delay).

/// \param[in]     ticks         \ref CMSIS_RTOS_TimeOutValue "time ticks" value

/// \return status code that indicates the execution status of the function.

osStatus_t osDelay (uint32_t ticks);

/// Wait until specified time.

/// \param[in]     ticks         absolute time in ticks

/// \return status code that indicates the execution status of the function.

osStatus_t osDelayUntil (uint32_t ticks);

//  ==== Timer Management Functions ====

/// Create and Initialize a timer.

/// \param[in]     func          function pointer to callback function.

/// \param[in]     type          \ref osTimerOnce for one-shot or \ref osTimerPeriodic for periodic behavior.

/// \param[in]     argument      argument to the timer callback function.

/// \param[in]     attr          timer attributes; NULL: default values.

/// \return timer ID for reference by other functions or NULL in case of error.

osTimerId_t osTimerNew (osTimerFunc_t func, osTimerType_t type, void *argument, const osTimerAttr_t *attr);

/// Get name of a timer.

/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.

/// \return name as null-terminated string.

const char *osTimerGetName (osTimerId_t timer_id);

/// Start or restart a timer.

/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.

/// \param[in]     ticks         \ref CMSIS_RTOS_TimeOutValue "time ticks" value of the timer.

/// \return status code that indicates the execution status of the function.

osStatus_t osTimerStart (osTimerId_t timer_id, uint32_t ticks);

/// Stop a timer.

/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osTimerStop (osTimerId_t timer_id);

/// Check if a timer is running.

/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.

/// \return 0 not running, 1 running.

uint32_t osTimerIsRunning (osTimerId_t timer_id);

/// Delete a timer.

/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osTimerDelete (osTimerId_t timer_id);

//  ==== Event Flags Management Functions ====

/// Create and Initialize an Event Flags object.

/// \param[in]     attr          event flags attributes; NULL: default values.

/// \return event flags ID for reference by other functions or NULL in case of error.

osEventFlagsId_t osEventFlagsNew (const osEventFlagsAttr_t *attr);

/// Get name of an Event Flags object.

/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.

/// \return name as null-terminated string.

const char *osEventFlagsGetName (osEventFlagsId_t ef_id);

/// Set the specified Event Flags.

/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.

/// \param[in]     flags         specifies the flags that shall be set.

/// \return event flags after setting or error code if highest bit set.

uint32_t osEventFlagsSet (osEventFlagsId_t ef_id, uint32_t flags);

/// Clear the specified Event Flags.

/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.

/// \param[in]     flags         specifies the flags that shall be cleared.

/// \return event flags before clearing or error code if highest bit set.

uint32_t osEventFlagsClear (osEventFlagsId_t ef_id, uint32_t flags);

/// Get the current Event Flags.

/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.

/// \return current event flags.

uint32_t osEventFlagsGet (osEventFlagsId_t ef_id);

/// Wait for one or more Event Flags to become signaled.

/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.

/// \param[in]     flags         specifies the flags to wait for.

/// \param[in]     options       specifies flags options (osFlagsXxxx).

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return event flags before clearing or error code if highest bit set.

uint32_t osEventFlagsWait (osEventFlagsId_t ef_id, uint32_t flags, uint32_t options, uint32_t timeout);

/// Delete an Event Flags object.

/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osEventFlagsDelete (osEventFlagsId_t ef_id);

//  ==== Mutex Management Functions ====

/// Create and Initialize a Mutex object.

/// \param[in]     attr          mutex attributes; NULL: default values.

/// \return mutex ID for reference by other functions or NULL in case of error.

osMutexId_t osMutexNew (const osMutexAttr_t *attr);

/// Get name of a Mutex object.

/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.

/// \return name as null-terminated string.

const char *osMutexGetName (osMutexId_t mutex_id);

/// Acquire a Mutex or timeout if it is locked.

/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return status code that indicates the execution status of the function.

osStatus_t osMutexAcquire (osMutexId_t mutex_id, uint32_t timeout);

/// Release a Mutex that was acquired by \ref osMutexAcquire.

/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osMutexRelease (osMutexId_t mutex_id);

/// Get Thread which owns a Mutex object.

/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.

/// \return thread ID of owner thread or NULL when mutex was not acquired.

osThreadId_t osMutexGetOwner (osMutexId_t mutex_id);

/// Delete a Mutex object.

/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osMutexDelete (osMutexId_t mutex_id);

//  ==== Semaphore Management Functions ====

/// Create and Initialize a Semaphore object.

/// \param[in]     max_count     maximum number of available tokens.

/// \param[in]     initial_count initial number of available tokens.

/// \param[in]     attr          semaphore attributes; NULL: default values.

/// \return semaphore ID for reference by other functions or NULL in case of error.

osSemaphoreId_t osSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr);

/// Get name of a Semaphore object.

/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.

/// \return name as null-terminated string.

const char *osSemaphoreGetName (osSemaphoreId_t semaphore_id);

/// Acquire a Semaphore token or timeout if no tokens are available.

/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return status code that indicates the execution status of the function.

osStatus_t osSemaphoreAcquire (osSemaphoreId_t semaphore_id, uint32_t timeout);

/// Release a Semaphore token up to the initial maximum count.

/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osSemaphoreRelease (osSemaphoreId_t semaphore_id);

/// Get current Semaphore token count.

/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.

/// \return number of tokens available.

uint32_t osSemaphoreGetCount (osSemaphoreId_t semaphore_id);

/// Delete a Semaphore object.

/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osSemaphoreDelete (osSemaphoreId_t semaphore_id);

//  ==== Memory Pool Management Functions ====

/// Create and Initialize a Memory Pool object.

/// \param[in]     block_count   maximum number of memory blocks in memory pool.

/// \param[in]     block_size    memory block size in bytes.

/// \param[in]     attr          memory pool attributes; NULL: default values.

/// \return memory pool ID for reference by other functions or NULL in case of error.

osMemoryPoolId_t osMemoryPoolNew (uint32_t block_count, uint32_t block_size, const osMemoryPoolAttr_t *attr);

/// Get name of a Memory Pool object.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \return name as null-terminated string.

const char *osMemoryPoolGetName (osMemoryPoolId_t mp_id);

/// Allocate a memory block from a Memory Pool.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return address of the allocated memory block or NULL in case of no memory is available.

void *osMemoryPoolAlloc (osMemoryPoolId_t mp_id, uint32_t timeout);

/// Return an allocated memory block back to a Memory Pool.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \param[in]     block         address of the allocated memory block to be returned to the memory pool.

/// \return status code that indicates the execution status of the function.

osStatus_t osMemoryPoolFree (osMemoryPoolId_t mp_id, void *block);

/// Get maximum number of memory blocks in a Memory Pool.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \return maximum number of memory blocks.

uint32_t osMemoryPoolGetCapacity (osMemoryPoolId_t mp_id);

/// Get memory block size in a Memory Pool.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \return memory block size in bytes.

uint32_t osMemoryPoolGetBlockSize (osMemoryPoolId_t mp_id);

/// Get number of memory blocks used in a Memory Pool.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \return number of memory blocks used.

uint32_t osMemoryPoolGetCount (osMemoryPoolId_t mp_id);

/// Get number of memory blocks available in a Memory Pool.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \return number of memory blocks available.

uint32_t osMemoryPoolGetSpace (osMemoryPoolId_t mp_id);

/// Delete a Memory Pool object.

/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osMemoryPoolDelete (osMemoryPoolId_t mp_id);

//  ==== Message Queue Management Functions ====

/// Create and Initialize a Message Queue object.

/// \param[in]     msg_count     maximum number of messages in queue.

/// \param[in]     msg_size      maximum message size in bytes.

/// \param[in]     attr          message queue attributes; NULL: default values.

/// \return message queue ID for reference by other functions or NULL in case of error.

osMessageQueueId_t osMessageQueueNew (uint32_t msg_count, uint32_t msg_size, const osMessageQueueAttr_t *attr);

/// Get name of a Message Queue object.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return name as null-terminated string.

const char *osMessageQueueGetName (osMessageQueueId_t mq_id);

/// Put a Message into a Queue or timeout if Queue is full.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \param[in]     msg_ptr       pointer to buffer with message to put into a queue.

/// \param[in]     msg_prio      message priority.

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return status code that indicates the execution status of the function.

osStatus_t osMessageQueuePut (osMessageQueueId_t mq_id, const void *msg_ptr, uint8_t msg_prio, uint32_t timeout);

/// Get a Message from a Queue or timeout if Queue is empty.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \param[out]    msg_ptr       pointer to buffer for message to get from a queue.

/// \param[out]    msg_prio      pointer to buffer for message priority or NULL.

/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.

/// \return status code that indicates the execution status of the function.

osStatus_t osMessageQueueGet (osMessageQueueId_t mq_id, void *msg_ptr, uint8_t *msg_prio, uint32_t timeout);

/// Get maximum number of messages in a Message Queue.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return maximum number of messages.

uint32_t osMessageQueueGetCapacity (osMessageQueueId_t mq_id);

/// Get maximum message size in a Memory Pool.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return maximum message size in bytes.

uint32_t osMessageQueueGetMsgSize (osMessageQueueId_t mq_id);

/// Get number of queued messages in a Message Queue.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return number of queued messages.

uint32_t osMessageQueueGetCount (osMessageQueueId_t mq_id);

/// Get number of available slots for messages in a Message Queue.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return number of available slots for messages.

uint32_t osMessageQueueGetSpace (osMessageQueueId_t mq_id);

/// Reset a Message Queue to initial empty state.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osMessageQueueReset (osMessageQueueId_t mq_id);

/// Delete a Message Queue object.

/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.

/// \return status code that indicates the execution status of the function.

osStatus_t osMessageQueueDelete (osMessageQueueId_t mq_id);

#ifdef  __cplusplus

}

#endif

#endif  // CMSIS_OS2_H_