/* -------------------------------------------------------------------------- * Portions Copyright © 2017 STMicroelectronics International N.V. All rights reserved. * Portions Copyright (c) 2013-2017 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. * * Name: cmsis_os2.h * Purpose: CMSIS RTOS2 wrapper for FreeRTOS * *---------------------------------------------------------------------------*/ #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 #include #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_