2 * Copyright (c) 2013-2023 Arm Limited. All rights reserved.
4 * SPDX-License-Identifier: Apache-2.0
6 * Licensed under the Apache License, Version 2.0 (the License); you may
7 * not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
14 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * ----------------------------------------------------------------------
20 * $Date: 30. June 2023
23 * Project: CMSIS-RTOS2 API
24 * Title: cmsis_os2.h header file
27 * Added provisional support for processor affinity in SMP systems:
28 - osThreadAttr_t: affinity_mask
29 * - osThreadSetAffinityMask, osThreadGetAffinityMask
31 * Added support for Process Isolation (Functional Safety):
32 * - Kernel Management: osKernelProtect, osKernelDestroyClass
33 * - Thread Management: osThreadGetClass, osThreadGetZone,
34 * osThreadSuspendClass, osThreadResumeClass
35 * osThreadTerminateZone,
36 * osThreadFeedWatchdog,
37 * osThreadProtectPrivileged
38 * - Thread attributes: osThreadZone, osThreadUnprivileged/osThreadPrivileged
39 * - Object attributes: osSafetyClass
40 * - Handler functions: osWatchdogAlarm_Handler
41 * - Zone Management: osZoneSetup_Callback
42 * - Exception Faults: osFaultResume
43 * Additional functions allowed to be called from Interrupt Service Routines:
44 * - osThreadGetName, osTimerGetName, osEventFlagsGetName, osMutexGetName,
45 * osSemaphoreGetName, osMemoryPoolGetName, osMessageQueueGetName
47 * Additional functions allowed to be called from Interrupt Service Routines:
50 * Additional functions allowed to be called from Interrupt Service Routines:
51 * - osKernelGetInfo, osKernelGetState
53 * Additional functions allowed to be called from Interrupt Service Routines:
54 * - osKernelGetTickCount, osKernelGetTickFreq
55 * Changed Kernel Tick type to uint32_t:
56 * - updated: osKernelGetTickCount, osDelayUntil
58 * Support for critical and uncritical sections (nesting safe):
59 * - updated: osKernelLock, osKernelUnlock
60 * - added: osKernelRestoreLock
61 * Updated Thread and Event Flags:
62 * - changed flags parameter and return type from int32_t to uint32_t
65 *---------------------------------------------------------------------------*/
72 #define __NO_RETURN __declspec(noreturn)
73 #elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
74 #define __NO_RETURN __attribute__((__noreturn__))
75 #elif defined(__GNUC__)
76 #define __NO_RETURN __attribute__((__noreturn__))
77 #elif defined(__ICCARM__)
78 #define __NO_RETURN __noreturn
93 // ==== Enumerations, structures, defines ====
95 /// Version information.
97 uint32_t api; ///< API version (major.minor.rev: mmnnnrrrr dec).
98 uint32_t kernel; ///< Kernel version (major.minor.rev: mmnnnrrrr dec).
103 osKernelInactive = 0, ///< Inactive.
104 osKernelReady = 1, ///< Ready.
105 osKernelRunning = 2, ///< Running.
106 osKernelLocked = 3, ///< Locked.
107 osKernelSuspended = 4, ///< Suspended.
108 osKernelError = -1, ///< Error.
109 osKernelReserved = 0x7FFFFFFF ///< Prevents enum down-size compiler optimization.
114 osThreadInactive = 0, ///< Inactive.
115 osThreadReady = 1, ///< Ready.
116 osThreadRunning = 2, ///< Running.
117 osThreadBlocked = 3, ///< Blocked.
118 osThreadTerminated = 4, ///< Terminated.
119 osThreadError = -1, ///< Error.
120 osThreadReserved = 0x7FFFFFFF ///< Prevents enum down-size compiler optimization.
125 osPriorityNone = 0, ///< No priority (not initialized).
126 osPriorityIdle = 1, ///< Reserved for Idle thread.
127 osPriorityLow = 8, ///< Priority: low
128 osPriorityLow1 = 8+1, ///< Priority: low + 1
129 osPriorityLow2 = 8+2, ///< Priority: low + 2
130 osPriorityLow3 = 8+3, ///< Priority: low + 3
131 osPriorityLow4 = 8+4, ///< Priority: low + 4
132 osPriorityLow5 = 8+5, ///< Priority: low + 5
133 osPriorityLow6 = 8+6, ///< Priority: low + 6
134 osPriorityLow7 = 8+7, ///< Priority: low + 7
135 osPriorityBelowNormal = 16, ///< Priority: below normal
136 osPriorityBelowNormal1 = 16+1, ///< Priority: below normal + 1
137 osPriorityBelowNormal2 = 16+2, ///< Priority: below normal + 2
138 osPriorityBelowNormal3 = 16+3, ///< Priority: below normal + 3
139 osPriorityBelowNormal4 = 16+4, ///< Priority: below normal + 4
140 osPriorityBelowNormal5 = 16+5, ///< Priority: below normal + 5
141 osPriorityBelowNormal6 = 16+6, ///< Priority: below normal + 6
142 osPriorityBelowNormal7 = 16+7, ///< Priority: below normal + 7
143 osPriorityNormal = 24, ///< Priority: normal
144 osPriorityNormal1 = 24+1, ///< Priority: normal + 1
145 osPriorityNormal2 = 24+2, ///< Priority: normal + 2
146 osPriorityNormal3 = 24+3, ///< Priority: normal + 3
147 osPriorityNormal4 = 24+4, ///< Priority: normal + 4
148 osPriorityNormal5 = 24+5, ///< Priority: normal + 5
149 osPriorityNormal6 = 24+6, ///< Priority: normal + 6
150 osPriorityNormal7 = 24+7, ///< Priority: normal + 7
151 osPriorityAboveNormal = 32, ///< Priority: above normal
152 osPriorityAboveNormal1 = 32+1, ///< Priority: above normal + 1
153 osPriorityAboveNormal2 = 32+2, ///< Priority: above normal + 2
154 osPriorityAboveNormal3 = 32+3, ///< Priority: above normal + 3
155 osPriorityAboveNormal4 = 32+4, ///< Priority: above normal + 4
156 osPriorityAboveNormal5 = 32+5, ///< Priority: above normal + 5
157 osPriorityAboveNormal6 = 32+6, ///< Priority: above normal + 6
158 osPriorityAboveNormal7 = 32+7, ///< Priority: above normal + 7
159 osPriorityHigh = 40, ///< Priority: high
160 osPriorityHigh1 = 40+1, ///< Priority: high + 1
161 osPriorityHigh2 = 40+2, ///< Priority: high + 2
162 osPriorityHigh3 = 40+3, ///< Priority: high + 3
163 osPriorityHigh4 = 40+4, ///< Priority: high + 4
164 osPriorityHigh5 = 40+5, ///< Priority: high + 5
165 osPriorityHigh6 = 40+6, ///< Priority: high + 6
166 osPriorityHigh7 = 40+7, ///< Priority: high + 7
167 osPriorityRealtime = 48, ///< Priority: realtime
168 osPriorityRealtime1 = 48+1, ///< Priority: realtime + 1
169 osPriorityRealtime2 = 48+2, ///< Priority: realtime + 2
170 osPriorityRealtime3 = 48+3, ///< Priority: realtime + 3
171 osPriorityRealtime4 = 48+4, ///< Priority: realtime + 4
172 osPriorityRealtime5 = 48+5, ///< Priority: realtime + 5
173 osPriorityRealtime6 = 48+6, ///< Priority: realtime + 6
174 osPriorityRealtime7 = 48+7, ///< Priority: realtime + 7
175 osPriorityISR = 56, ///< Reserved for ISR deferred thread.
176 osPriorityError = -1, ///< System cannot determine priority or illegal priority.
177 osPriorityReserved = 0x7FFFFFFF ///< Prevents enum down-size compiler optimization.
180 /// Entry point of a thread.
181 typedef void (*osThreadFunc_t) (void *argument);
183 /// Timer callback function.
184 typedef void (*osTimerFunc_t) (void *argument);
188 osTimerOnce = 0, ///< One-shot timer.
189 osTimerPeriodic = 1 ///< Repeating timer.
193 #define osWaitForever 0xFFFFFFFFU ///< Wait forever timeout value.
195 // Flags options (\ref osThreadFlagsWait and \ref osEventFlagsWait).
196 #define osFlagsWaitAny 0x00000000U ///< Wait for any flag (default).
197 #define osFlagsWaitAll 0x00000001U ///< Wait for all flags.
198 #define osFlagsNoClear 0x00000002U ///< Do not clear flags which have been specified to wait for.
200 // Flags errors (returned by osThreadFlagsXxxx and osEventFlagsXxxx).
201 #define osFlagsError 0x80000000U ///< Error indicator.
202 #define osFlagsErrorUnknown 0xFFFFFFFFU ///< osError (-1).
203 #define osFlagsErrorTimeout 0xFFFFFFFEU ///< osErrorTimeout (-2).
204 #define osFlagsErrorResource 0xFFFFFFFDU ///< osErrorResource (-3).
205 #define osFlagsErrorParameter 0xFFFFFFFCU ///< osErrorParameter (-4).
206 #define osFlagsErrorISR 0xFFFFFFFAU ///< osErrorISR (-6).
207 #define osFlagsErrorSafetyClass 0xFFFFFFF9U ///< osErrorSafetyClass (-7).
209 // Thread attributes (attr_bits in \ref osThreadAttr_t).
210 #define osThreadDetached 0x00000000U ///< Thread created in detached mode (default)
211 #define osThreadJoinable 0x00000001U ///< Thread created in joinable mode
212 #define osThreadUnprivileged 0x00000002U ///< Thread runs in unprivileged mode
213 #define osThreadPrivileged 0x00000004U ///< Thread runs in privileged mode
215 #define osThreadZone_Pos 8U ///< MPU protected zone position
216 #define osThreadZone_Msk (0x3FUL << osThreadZone_Pos) ///< MPU protected zone mask
217 #define osThreadZone_Valid (0x80UL << osThreadZone_Pos) ///< MPU protected zone valid flag
218 #define osThreadZone(n) ((((n) << osThreadZone_Pos) & osThreadZone_Msk) | \
219 osThreadZone_Valid) ///< MPU zone value in attribute bit field format
221 // Thread processor affinity (affinity_mask in \ref osThreadAttr_t).
222 #define osThreadProcessor(n) (1UL << (n)) ///< Thread processor number for SMP systems
224 // Mutex attributes (attr_bits in \ref osMutexAttr_t).
225 #define osMutexRecursive 0x00000001U ///< Recursive mutex.
226 #define osMutexPrioInherit 0x00000002U ///< Priority inherit protocol.
227 #define osMutexRobust 0x00000008U ///< Robust mutex.
229 // Object attributes (attr_bits in all objects).
230 #define osSafetyClass_Pos 16U ///< Safety class position
231 #define osSafetyClass_Msk (0x0FUL << osSafetyClass_Pos) ///< Safety class mask
232 #define osSafetyClass_Valid (0x10UL << osSafetyClass_Pos) ///< Safety class valid flag
233 #define osSafetyClass(n) ((((n) << osSafetyClass_Pos) & osSafetyClass_Msk) | \
234 osSafetyClass_Valid) ///< Safety class
236 // Safety mode (\ref osThreadSuspendClass, \ref osThreadResumeClass and \ref osKernelDestroyClass).
237 #define osSafetyWithSameClass 0x00000001U ///< Objects with same safety class.
238 #define osSafetyWithLowerClass 0x00000002U ///< Objects with lower safety class.
240 // Error indication (returned by \ref osThreadGetClass and \ref osThreadGetZone).
241 #define osErrorId 0xFFFFFFFFU ///< osError (-1).
243 /// Status code values returned by CMSIS-RTOS functions.
245 osOK = 0, ///< Operation completed successfully.
246 osError = -1, ///< Unspecified RTOS error: run-time error but no other error message fits.
247 osErrorTimeout = -2, ///< Operation not completed within the timeout period.
248 osErrorResource = -3, ///< Resource not available.
249 osErrorParameter = -4, ///< Parameter error.
250 osErrorNoMemory = -5, ///< System is out of memory: it was impossible to allocate or reserve memory for the operation.
251 osErrorISR = -6, ///< Not allowed in ISR context: the function cannot be called from interrupt service routines.
252 osErrorSafetyClass = -7, ///< Operation denied because of safety class violation.
253 osStatusReserved = 0x7FFFFFFF ///< Prevents enum down-size compiler optimization.
257 /// \details Thread ID identifies the thread.
258 typedef void *osThreadId_t;
260 /// \details Timer ID identifies the timer.
261 typedef void *osTimerId_t;
263 /// \details Event Flags ID identifies the event flags.
264 typedef void *osEventFlagsId_t;
266 /// \details Mutex ID identifies the mutex.
267 typedef void *osMutexId_t;
269 /// \details Semaphore ID identifies the semaphore.
270 typedef void *osSemaphoreId_t;
272 /// \details Memory Pool ID identifies the memory pool.
273 typedef void *osMemoryPoolId_t;
275 /// \details Message Queue ID identifies the message queue.
276 typedef void *osMessageQueueId_t;
279 #ifndef TZ_MODULEID_T
280 #define TZ_MODULEID_T
281 /// \details Data type that identifies secure software modules called by a process.
282 typedef uint32_t TZ_ModuleId_t;
286 /// Attributes structure for thread.
288 const char *name; ///< name of the thread
289 uint32_t attr_bits; ///< attribute bits
290 void *cb_mem; ///< memory for control block
291 uint32_t cb_size; ///< size of provided memory for control block
292 void *stack_mem; ///< memory for stack
293 uint32_t stack_size; ///< size of stack
294 osPriority_t priority; ///< initial thread priority (default: osPriorityNormal)
295 TZ_ModuleId_t tz_module; ///< TrustZone module identifier
296 uint32_t affinity_mask; ///< processor affinity mask for binding the thread to a CPU in a SMP system (0 when not used)
299 /// Attributes structure for timer.
301 const char *name; ///< name of the timer
302 uint32_t attr_bits; ///< attribute bits
303 void *cb_mem; ///< memory for control block
304 uint32_t cb_size; ///< size of provided memory for control block
307 /// Attributes structure for event flags.
309 const char *name; ///< name of the event flags
310 uint32_t attr_bits; ///< attribute bits
311 void *cb_mem; ///< memory for control block
312 uint32_t cb_size; ///< size of provided memory for control block
313 } osEventFlagsAttr_t;
315 /// Attributes structure for mutex.
317 const char *name; ///< name of the mutex
318 uint32_t attr_bits; ///< attribute bits
319 void *cb_mem; ///< memory for control block
320 uint32_t cb_size; ///< size of provided memory for control block
323 /// Attributes structure for semaphore.
325 const char *name; ///< name of the semaphore
326 uint32_t attr_bits; ///< attribute bits
327 void *cb_mem; ///< memory for control block
328 uint32_t cb_size; ///< size of provided memory for control block
331 /// Attributes structure for memory pool.
333 const char *name; ///< name of the memory pool
334 uint32_t attr_bits; ///< attribute bits
335 void *cb_mem; ///< memory for control block
336 uint32_t cb_size; ///< size of provided memory for control block
337 void *mp_mem; ///< memory for data storage
338 uint32_t mp_size; ///< size of provided memory for data storage
339 } osMemoryPoolAttr_t;
341 /// Attributes structure for message queue.
343 const char *name; ///< name of the message queue
344 uint32_t attr_bits; ///< attribute bits
345 void *cb_mem; ///< memory for control block
346 uint32_t cb_size; ///< size of provided memory for control block
347 void *mq_mem; ///< memory for data storage
348 uint32_t mq_size; ///< size of provided memory for data storage
349 } osMessageQueueAttr_t;
352 // ==== Kernel Management Functions ====
354 /// Initialize the RTOS Kernel.
355 /// \return status code that indicates the execution status of the function.
356 osStatus_t osKernelInitialize (void);
358 /// Get RTOS Kernel Information.
359 /// \param[out] version pointer to buffer for retrieving version information.
360 /// \param[out] id_buf pointer to buffer for retrieving kernel identification string.
361 /// \param[in] id_size size of buffer for kernel identification string.
362 /// \return status code that indicates the execution status of the function.
363 osStatus_t osKernelGetInfo (osVersion_t *version, char *id_buf, uint32_t id_size);
365 /// Get the current RTOS Kernel state.
366 /// \return current RTOS Kernel state.
367 osKernelState_t osKernelGetState (void);
369 /// Start the RTOS Kernel scheduler.
370 /// \return status code that indicates the execution status of the function.
371 osStatus_t osKernelStart (void);
373 /// Lock the RTOS Kernel scheduler.
374 /// \return previous lock state (1 - locked, 0 - not locked, error code if negative).
375 int32_t osKernelLock (void);
377 /// Unlock the RTOS Kernel scheduler.
378 /// \return previous lock state (1 - locked, 0 - not locked, error code if negative).
379 int32_t osKernelUnlock (void);
381 /// Restore the RTOS Kernel scheduler lock state.
382 /// \param[in] lock lock state obtained by \ref osKernelLock or \ref osKernelUnlock.
383 /// \return new lock state (1 - locked, 0 - not locked, error code if negative).
384 int32_t osKernelRestoreLock (int32_t lock);
386 /// Suspend the RTOS Kernel scheduler.
387 /// \return time in ticks, for how long the system can sleep or power-down.
388 uint32_t osKernelSuspend (void);
390 /// Resume the RTOS Kernel scheduler.
391 /// \param[in] sleep_ticks time in ticks for how long the system was in sleep or power-down mode.
392 void osKernelResume (uint32_t sleep_ticks);
394 /// Protect the RTOS Kernel scheduler access.
395 /// \param[in] safety_class safety class.
396 /// \return status code that indicates the execution status of the function.
397 osStatus_t osKernelProtect (uint32_t safety_class);
399 /// Destroy objects for specified safety classes.
400 /// \param[in] safety_class safety class.
401 /// \param[in] mode safety mode.
402 /// \return status code that indicates the execution status of the function.
403 osStatus_t osKernelDestroyClass (uint32_t safety_class, uint32_t mode);
405 /// Get the RTOS kernel tick count.
406 /// \return RTOS kernel current tick count.
407 uint32_t osKernelGetTickCount (void);
409 /// Get the RTOS kernel tick frequency.
410 /// \return frequency of the kernel tick in hertz, i.e. kernel ticks per second.
411 uint32_t osKernelGetTickFreq (void);
413 /// Get the RTOS kernel system timer count.
414 /// \return RTOS kernel current system timer count as 32-bit value.
415 uint32_t osKernelGetSysTimerCount (void);
417 /// Get the RTOS kernel system timer frequency.
418 /// \return frequency of the system timer in hertz, i.e. timer ticks per second.
419 uint32_t osKernelGetSysTimerFreq (void);
422 // ==== Thread Management Functions ====
424 /// Create a thread and add it to Active Threads.
425 /// \param[in] func thread function.
426 /// \param[in] argument pointer that is passed to the thread function as start argument.
427 /// \param[in] attr thread attributes; NULL: default values.
428 /// \return thread ID for reference by other functions or NULL in case of error.
429 osThreadId_t osThreadNew (osThreadFunc_t func, void *argument, const osThreadAttr_t *attr);
431 /// Get name of a thread.
432 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
433 /// \return name as null-terminated string.
434 const char *osThreadGetName (osThreadId_t thread_id);
436 /// Get safety class of a thread.
437 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
438 /// \return safety class of the specified thread.
439 uint32_t osThreadGetClass (osThreadId_t thread_id);
441 /// Get MPU protected zone of a thread.
442 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
443 /// \return MPU protected zone of the specified thread.
444 uint32_t osThreadGetZone (osThreadId_t thread_id);
446 /// Return the thread ID of the current running thread.
447 /// \return thread ID for reference by other functions or NULL in case of error.
448 osThreadId_t osThreadGetId (void);
450 /// Get current thread state of a thread.
451 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
452 /// \return current thread state of the specified thread.
453 osThreadState_t osThreadGetState (osThreadId_t thread_id);
455 /// Get stack size of a thread.
456 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
457 /// \return stack size in bytes.
458 uint32_t osThreadGetStackSize (osThreadId_t thread_id);
460 /// Get available stack space of a thread based on stack watermark recording during execution.
461 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
462 /// \return remaining stack space in bytes.
463 uint32_t osThreadGetStackSpace (osThreadId_t thread_id);
465 /// Change priority of a thread.
466 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
467 /// \param[in] priority new priority value for the thread function.
468 /// \return status code that indicates the execution status of the function.
469 osStatus_t osThreadSetPriority (osThreadId_t thread_id, osPriority_t priority);
471 /// Get current priority of a thread.
472 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
473 /// \return current priority value of the specified thread.
474 osPriority_t osThreadGetPriority (osThreadId_t thread_id);
476 /// Pass control to next thread that is in state \b READY.
477 /// \return status code that indicates the execution status of the function.
478 osStatus_t osThreadYield (void);
480 /// Suspend execution of a thread.
481 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
482 /// \return status code that indicates the execution status of the function.
483 osStatus_t osThreadSuspend (osThreadId_t thread_id);
485 /// Resume execution of a thread.
486 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
487 /// \return status code that indicates the execution status of the function.
488 osStatus_t osThreadResume (osThreadId_t thread_id);
490 /// Detach a thread (thread storage can be reclaimed when thread terminates).
491 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
492 /// \return status code that indicates the execution status of the function.
493 osStatus_t osThreadDetach (osThreadId_t thread_id);
495 /// Wait for specified thread to terminate.
496 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
497 /// \return status code that indicates the execution status of the function.
498 osStatus_t osThreadJoin (osThreadId_t thread_id);
500 /// Terminate execution of current running thread.
501 __NO_RETURN void osThreadExit (void);
503 /// Terminate execution of a thread.
504 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
505 /// \return status code that indicates the execution status of the function.
506 osStatus_t osThreadTerminate (osThreadId_t thread_id);
508 /// Feed watchdog of the current running thread.
509 /// \param[in] ticks interval in kernel ticks until the thread watchdog expires, or 0 to stop the watchdog
510 /// \return status code that indicates the execution status of the function.
511 osStatus_t osThreadFeedWatchdog (uint32_t ticks);
513 /// Protect creation of privileged threads.
514 /// \return status code that indicates the execution status of the function.
515 osStatus_t osThreadProtectPrivileged (void);
517 /// Suspend execution of threads for specified safety classes.
518 /// \param[in] safety_class safety class.
519 /// \param[in] mode safety mode.
520 /// \return status code that indicates the execution status of the function.
521 osStatus_t osThreadSuspendClass (uint32_t safety_class, uint32_t mode);
523 /// Resume execution of threads for specified safety classes.
524 /// \param[in] safety_class safety class.
525 /// \param[in] mode safety mode.
526 /// \return status code that indicates the execution status of the function.
527 osStatus_t osThreadResumeClass (uint32_t safety_class, uint32_t mode);
529 /// Terminate execution of threads assigned to a specified MPU protected zone.
530 /// \param[in] zone MPU protected zone.
531 /// \return status code that indicates the execution status of the function.
532 osStatus_t osThreadTerminateZone (uint32_t zone);
534 /// Set processor affinity mask of a thread.
535 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
536 /// \param[in] affinity_mask processor affinity mask for the thread.
537 /// \return status code that indicates the execution status of the function.
538 osStatus_t osThreadSetAffinityMask (osThreadId_t thread_id, uint32_t affinity_mask);
540 /// Get current processor affinity mask of a thread.
541 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
542 /// \return current processor affinity mask of the specified thread.
543 uint32_t osThreadGetAffinityMask (osThreadId_t thread_id);
545 /// Get number of active threads.
546 /// \return number of active threads.
547 uint32_t osThreadGetCount (void);
549 /// Enumerate active threads.
550 /// \param[out] thread_array pointer to array for retrieving thread IDs.
551 /// \param[in] array_items maximum number of items in array for retrieving thread IDs.
552 /// \return number of enumerated threads.
553 uint32_t osThreadEnumerate (osThreadId_t *thread_array, uint32_t array_items);
556 // ==== Thread Flags Functions ====
558 /// Set the specified Thread Flags of a thread.
559 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
560 /// \param[in] flags specifies the flags of the thread that shall be set.
561 /// \return thread flags after setting or error code if highest bit set.
562 uint32_t osThreadFlagsSet (osThreadId_t thread_id, uint32_t flags);
564 /// Clear the specified Thread Flags of current running thread.
565 /// \param[in] flags specifies the flags of the thread that shall be cleared.
566 /// \return thread flags before clearing or error code if highest bit set.
567 uint32_t osThreadFlagsClear (uint32_t flags);
569 /// Get the current Thread Flags of current running thread.
570 /// \return current thread flags.
571 uint32_t osThreadFlagsGet (void);
573 /// Wait for one or more Thread Flags of the current running thread to become signaled.
574 /// \param[in] flags specifies the flags to wait for.
575 /// \param[in] options specifies flags options (osFlagsXxxx).
576 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
577 /// \return thread flags before clearing or error code if highest bit set.
578 uint32_t osThreadFlagsWait (uint32_t flags, uint32_t options, uint32_t timeout);
581 // ==== Generic Wait Functions ====
583 /// Wait for Timeout (Time Delay).
584 /// \param[in] ticks \ref CMSIS_RTOS_TimeOutValue "time ticks" value
585 /// \return status code that indicates the execution status of the function.
586 osStatus_t osDelay (uint32_t ticks);
588 /// Wait until specified time.
589 /// \param[in] ticks absolute time in ticks
590 /// \return status code that indicates the execution status of the function.
591 osStatus_t osDelayUntil (uint32_t ticks);
594 // ==== Timer Management Functions ====
596 /// Create and Initialize a timer.
597 /// \param[in] func function pointer to callback function.
598 /// \param[in] type \ref osTimerOnce for one-shot or \ref osTimerPeriodic for periodic behavior.
599 /// \param[in] argument argument to the timer callback function.
600 /// \param[in] attr timer attributes; NULL: default values.
601 /// \return timer ID for reference by other functions or NULL in case of error.
602 osTimerId_t osTimerNew (osTimerFunc_t func, osTimerType_t type, void *argument, const osTimerAttr_t *attr);
604 /// Get name of a timer.
605 /// \param[in] timer_id timer ID obtained by \ref osTimerNew.
606 /// \return name as null-terminated string.
607 const char *osTimerGetName (osTimerId_t timer_id);
609 /// Start or restart a timer.
610 /// \param[in] timer_id timer ID obtained by \ref osTimerNew.
611 /// \param[in] ticks \ref CMSIS_RTOS_TimeOutValue "time ticks" value of the timer.
612 /// \return status code that indicates the execution status of the function.
613 osStatus_t osTimerStart (osTimerId_t timer_id, uint32_t ticks);
616 /// \param[in] timer_id timer ID obtained by \ref osTimerNew.
617 /// \return status code that indicates the execution status of the function.
618 osStatus_t osTimerStop (osTimerId_t timer_id);
620 /// Check if a timer is running.
621 /// \param[in] timer_id timer ID obtained by \ref osTimerNew.
622 /// \return 0 not running, 1 running.
623 uint32_t osTimerIsRunning (osTimerId_t timer_id);
626 /// \param[in] timer_id timer ID obtained by \ref osTimerNew.
627 /// \return status code that indicates the execution status of the function.
628 osStatus_t osTimerDelete (osTimerId_t timer_id);
631 // ==== Event Flags Management Functions ====
633 /// Create and Initialize an Event Flags object.
634 /// \param[in] attr event flags attributes; NULL: default values.
635 /// \return event flags ID for reference by other functions or NULL in case of error.
636 osEventFlagsId_t osEventFlagsNew (const osEventFlagsAttr_t *attr);
638 /// Get name of an Event Flags object.
639 /// \param[in] ef_id event flags ID obtained by \ref osEventFlagsNew.
640 /// \return name as null-terminated string.
641 const char *osEventFlagsGetName (osEventFlagsId_t ef_id);
643 /// Set the specified Event Flags.
644 /// \param[in] ef_id event flags ID obtained by \ref osEventFlagsNew.
645 /// \param[in] flags specifies the flags that shall be set.
646 /// \return event flags after setting or error code if highest bit set.
647 uint32_t osEventFlagsSet (osEventFlagsId_t ef_id, uint32_t flags);
649 /// Clear the specified Event Flags.
650 /// \param[in] ef_id event flags ID obtained by \ref osEventFlagsNew.
651 /// \param[in] flags specifies the flags that shall be cleared.
652 /// \return event flags before clearing or error code if highest bit set.
653 uint32_t osEventFlagsClear (osEventFlagsId_t ef_id, uint32_t flags);
655 /// Get the current Event Flags.
656 /// \param[in] ef_id event flags ID obtained by \ref osEventFlagsNew.
657 /// \return current event flags.
658 uint32_t osEventFlagsGet (osEventFlagsId_t ef_id);
660 /// Wait for one or more Event Flags to become signaled.
661 /// \param[in] ef_id event flags ID obtained by \ref osEventFlagsNew.
662 /// \param[in] flags specifies the flags to wait for.
663 /// \param[in] options specifies flags options (osFlagsXxxx).
664 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
665 /// \return event flags before clearing or error code if highest bit set.
666 uint32_t osEventFlagsWait (osEventFlagsId_t ef_id, uint32_t flags, uint32_t options, uint32_t timeout);
668 /// Delete an Event Flags object.
669 /// \param[in] ef_id event flags ID obtained by \ref osEventFlagsNew.
670 /// \return status code that indicates the execution status of the function.
671 osStatus_t osEventFlagsDelete (osEventFlagsId_t ef_id);
674 // ==== Mutex Management Functions ====
676 /// Create and Initialize a Mutex object.
677 /// \param[in] attr mutex attributes; NULL: default values.
678 /// \return mutex ID for reference by other functions or NULL in case of error.
679 osMutexId_t osMutexNew (const osMutexAttr_t *attr);
681 /// Get name of a Mutex object.
682 /// \param[in] mutex_id mutex ID obtained by \ref osMutexNew.
683 /// \return name as null-terminated string.
684 const char *osMutexGetName (osMutexId_t mutex_id);
686 /// Acquire a Mutex or timeout if it is locked.
687 /// \param[in] mutex_id mutex ID obtained by \ref osMutexNew.
688 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
689 /// \return status code that indicates the execution status of the function.
690 osStatus_t osMutexAcquire (osMutexId_t mutex_id, uint32_t timeout);
692 /// Release a Mutex that was acquired by \ref osMutexAcquire.
693 /// \param[in] mutex_id mutex ID obtained by \ref osMutexNew.
694 /// \return status code that indicates the execution status of the function.
695 osStatus_t osMutexRelease (osMutexId_t mutex_id);
697 /// Get Thread which owns a Mutex object.
698 /// \param[in] mutex_id mutex ID obtained by \ref osMutexNew.
699 /// \return thread ID of owner thread or NULL when mutex was not acquired.
700 osThreadId_t osMutexGetOwner (osMutexId_t mutex_id);
702 /// Delete a Mutex object.
703 /// \param[in] mutex_id mutex ID obtained by \ref osMutexNew.
704 /// \return status code that indicates the execution status of the function.
705 osStatus_t osMutexDelete (osMutexId_t mutex_id);
708 // ==== Semaphore Management Functions ====
710 /// Create and Initialize a Semaphore object.
711 /// \param[in] max_count maximum number of available tokens.
712 /// \param[in] initial_count initial number of available tokens.
713 /// \param[in] attr semaphore attributes; NULL: default values.
714 /// \return semaphore ID for reference by other functions or NULL in case of error.
715 osSemaphoreId_t osSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr);
717 /// Get name of a Semaphore object.
718 /// \param[in] semaphore_id semaphore ID obtained by \ref osSemaphoreNew.
719 /// \return name as null-terminated string.
720 const char *osSemaphoreGetName (osSemaphoreId_t semaphore_id);
722 /// Acquire a Semaphore token or timeout if no tokens are available.
723 /// \param[in] semaphore_id semaphore ID obtained by \ref osSemaphoreNew.
724 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
725 /// \return status code that indicates the execution status of the function.
726 osStatus_t osSemaphoreAcquire (osSemaphoreId_t semaphore_id, uint32_t timeout);
728 /// Release a Semaphore token up to the initial maximum count.
729 /// \param[in] semaphore_id semaphore ID obtained by \ref osSemaphoreNew.
730 /// \return status code that indicates the execution status of the function.
731 osStatus_t osSemaphoreRelease (osSemaphoreId_t semaphore_id);
733 /// Get current Semaphore token count.
734 /// \param[in] semaphore_id semaphore ID obtained by \ref osSemaphoreNew.
735 /// \return number of tokens available.
736 uint32_t osSemaphoreGetCount (osSemaphoreId_t semaphore_id);
738 /// Delete a Semaphore object.
739 /// \param[in] semaphore_id semaphore ID obtained by \ref osSemaphoreNew.
740 /// \return status code that indicates the execution status of the function.
741 osStatus_t osSemaphoreDelete (osSemaphoreId_t semaphore_id);
744 // ==== Memory Pool Management Functions ====
746 /// Create and Initialize a Memory Pool object.
747 /// \param[in] block_count maximum number of memory blocks in memory pool.
748 /// \param[in] block_size memory block size in bytes.
749 /// \param[in] attr memory pool attributes; NULL: default values.
750 /// \return memory pool ID for reference by other functions or NULL in case of error.
751 osMemoryPoolId_t osMemoryPoolNew (uint32_t block_count, uint32_t block_size, const osMemoryPoolAttr_t *attr);
753 /// Get name of a Memory Pool object.
754 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
755 /// \return name as null-terminated string.
756 const char *osMemoryPoolGetName (osMemoryPoolId_t mp_id);
758 /// Allocate a memory block from a Memory Pool.
759 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
760 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
761 /// \return address of the allocated memory block or NULL in case of no memory is available.
762 void *osMemoryPoolAlloc (osMemoryPoolId_t mp_id, uint32_t timeout);
764 /// Return an allocated memory block back to a Memory Pool.
765 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
766 /// \param[in] block address of the allocated memory block to be returned to the memory pool.
767 /// \return status code that indicates the execution status of the function.
768 osStatus_t osMemoryPoolFree (osMemoryPoolId_t mp_id, void *block);
770 /// Get maximum number of memory blocks in a Memory Pool.
771 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
772 /// \return maximum number of memory blocks.
773 uint32_t osMemoryPoolGetCapacity (osMemoryPoolId_t mp_id);
775 /// Get memory block size in a Memory Pool.
776 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
777 /// \return memory block size in bytes.
778 uint32_t osMemoryPoolGetBlockSize (osMemoryPoolId_t mp_id);
780 /// Get number of memory blocks used in a Memory Pool.
781 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
782 /// \return number of memory blocks used.
783 uint32_t osMemoryPoolGetCount (osMemoryPoolId_t mp_id);
785 /// Get number of memory blocks available in a Memory Pool.
786 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
787 /// \return number of memory blocks available.
788 uint32_t osMemoryPoolGetSpace (osMemoryPoolId_t mp_id);
790 /// Delete a Memory Pool object.
791 /// \param[in] mp_id memory pool ID obtained by \ref osMemoryPoolNew.
792 /// \return status code that indicates the execution status of the function.
793 osStatus_t osMemoryPoolDelete (osMemoryPoolId_t mp_id);
796 // ==== Message Queue Management Functions ====
798 /// Create and Initialize a Message Queue object.
799 /// \param[in] msg_count maximum number of messages in queue.
800 /// \param[in] msg_size maximum message size in bytes.
801 /// \param[in] attr message queue attributes; NULL: default values.
802 /// \return message queue ID for reference by other functions or NULL in case of error.
803 osMessageQueueId_t osMessageQueueNew (uint32_t msg_count, uint32_t msg_size, const osMessageQueueAttr_t *attr);
805 /// Get name of a Message Queue object.
806 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
807 /// \return name as null-terminated string.
808 const char *osMessageQueueGetName (osMessageQueueId_t mq_id);
810 /// Put a Message into a Queue or timeout if Queue is full.
811 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
812 /// \param[in] msg_ptr pointer to buffer with message to put into a queue.
813 /// \param[in] msg_prio message priority.
814 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
815 /// \return status code that indicates the execution status of the function.
816 osStatus_t osMessageQueuePut (osMessageQueueId_t mq_id, const void *msg_ptr, uint8_t msg_prio, uint32_t timeout);
818 /// Get a Message from a Queue or timeout if Queue is empty.
819 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
820 /// \param[out] msg_ptr pointer to buffer for message to get from a queue.
821 /// \param[out] msg_prio pointer to buffer for message priority or NULL.
822 /// \param[in] timeout \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
823 /// \return status code that indicates the execution status of the function.
824 osStatus_t osMessageQueueGet (osMessageQueueId_t mq_id, void *msg_ptr, uint8_t *msg_prio, uint32_t timeout);
826 /// Get maximum number of messages in a Message Queue.
827 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
828 /// \return maximum number of messages.
829 uint32_t osMessageQueueGetCapacity (osMessageQueueId_t mq_id);
831 /// Get maximum message size in a Message Queue.
832 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
833 /// \return maximum message size in bytes.
834 uint32_t osMessageQueueGetMsgSize (osMessageQueueId_t mq_id);
836 /// Get number of queued messages in a Message Queue.
837 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
838 /// \return number of queued messages.
839 uint32_t osMessageQueueGetCount (osMessageQueueId_t mq_id);
841 /// Get number of available slots for messages in a Message Queue.
842 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
843 /// \return number of available slots for messages.
844 uint32_t osMessageQueueGetSpace (osMessageQueueId_t mq_id);
846 /// Reset a Message Queue to initial empty state.
847 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
848 /// \return status code that indicates the execution status of the function.
849 osStatus_t osMessageQueueReset (osMessageQueueId_t mq_id);
851 /// Delete a Message Queue object.
852 /// \param[in] mq_id message queue ID obtained by \ref osMessageQueueNew.
853 /// \return status code that indicates the execution status of the function.
854 osStatus_t osMessageQueueDelete (osMessageQueueId_t mq_id);
857 // ==== Handler Functions ====
859 /// Handler for expired thread watchdogs.
860 /// \param[in] thread_id thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
861 /// \return new watchdog reload value or 0 to stop the watchdog.
862 uint32_t osWatchdogAlarm_Handler (osThreadId_t thread_id);
865 // ==== Zone Management Function ====
867 /// Setup MPU protected zone (called when zone changes).
868 /// \param[in] zone zone number.
869 void osZoneSetup_Callback (uint32_t zone);
872 // ==== Exception Faults ====
874 /// Resume normal operation when exiting exception faults
875 void osFaultResume (void);
882 #endif // CMSIS_OS2_H_