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A bundled STM32F10x Std Periph and CMSIS library
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STM32F10x_Std_Lib/CMSIS/RTOS/cmsis_os.h

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  1. /* ----------------------------------------------------------------------

  2.  * $Date:        5. February 2013

  3.  * $Revision:    V1.02

  4.  *

  5.  * Project:      CMSIS-RTOS API

  6.  * Title:        cmsis_os.h template header file

  7.  *

  8.  * Version 0.02

  9.  *    Initial Proposal Phase

  10.  * Version 0.03

  11.  *    osKernelStart added, optional feature: main started as thread

  12.  *    osSemaphores have standard behavior

  13.  *    osTimerCreate does not start the timer, added osTimerStart

  14.  *    osThreadPass is renamed to osThreadYield

  15.  * Version 1.01

  16.  *    Support for C++ interface

  17.  *     - const attribute removed from the osXxxxDef_t typedef's

  18.  *     - const attribute added to the osXxxxDef macros

  19.  *    Added: osTimerDelete, osMutexDelete, osSemaphoreDelete

  20.  *    Added: osKernelInitialize

  21.  * Version 1.02

  22.  *    Control functions for short timeouts in microsecond resolution:

  23.  *    Added: osKernelSysTick, osKernelSysTickFrequency, osKernelSysTickMicroSec

  24.  *    Removed: osSignalGet 

  25.  *----------------------------------------------------------------------------

  26.  *

  27.  * Copyright (c) 2013 ARM LIMITED

  28.  * All rights reserved.

  29.  * Redistribution and use in source and binary forms, with or without

  30.  * modification, are permitted provided that the following conditions are met:

  31.  *  - Redistributions of source code must retain the above copyright

  32.  *    notice, this list of conditions and the following disclaimer.

  33.  *  - Redistributions in binary form must reproduce the above copyright

  34.  *    notice, this list of conditions and the following disclaimer in the

  35.  *    documentation and/or other materials provided with the distribution.

  36.  *  - Neither the name of ARM  nor the names of its contributors may be used

  37.  *    to endorse or promote products derived from this software without

  38.  *    specific prior written permission.

  39.  *

  40.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

  41.  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  42.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  43.  * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE

  44.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

  45.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

  46.  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

  47.  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

  48.  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  49.  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  50.  * POSSIBILITY OF SUCH DAMAGE.

  51.  *---------------------------------------------------------------------------*/

  52. 

  53. /**

  54. \page cmsis_os_h Header File Template: cmsis_os.h

  55. 

  56. The file \b cmsis_os.h is a template header file for a CMSIS-RTOS compliant Real-Time Operating System (RTOS).

  57. Each RTOS that is compliant with CMSIS-RTOS shall provide a specific \b cmsis_os.h header file that represents

  58. its implementation.

  59. 

  60. The file cmsis_os.h contains:

  61.  - CMSIS-RTOS API function definitions

  62.  - struct definitions for parameters and return types

  63.  - status and priority values used by CMSIS-RTOS API functions

  64.  - macros for defining threads and other kernel objects

  65. 

  66. 

  67. <b>Name conventions and header file modifications</b>

  68. 

  69. All definitions are prefixed with \b os to give an unique name space for CMSIS-RTOS functions.

  70. Definitions that are prefixed \b os_ are not used in the application code but local to this header file.

  71. All definitions and functions that belong to a module are grouped and have a common prefix, i.e. \b osThread.

  72. 

  73. Definitions that are marked with <b>CAN BE CHANGED</b> can be adapted towards the needs of the actual CMSIS-RTOS implementation.

  74. These definitions can be specific to the underlying RTOS kernel.

  75. 

  76. Definitions that are marked with <b>MUST REMAIN UNCHANGED</b> cannot be altered. Otherwise the CMSIS-RTOS implementation is no longer

  77. compliant to the standard. Note that some functions are optional and need not to be provided by every CMSIS-RTOS implementation.

  78. 

  79. 

  80. <b>Function calls from interrupt service routines</b>

  81. 

  82. The following CMSIS-RTOS functions can be called from threads and interrupt service routines (ISR):

  83.   - \ref osSignalSet

  84.   - \ref osSemaphoreRelease

  85.   - \ref osPoolAlloc, \ref osPoolCAlloc, \ref osPoolFree

  86.   - \ref osMessagePut, \ref osMessageGet

  87.   - \ref osMailAlloc, \ref osMailCAlloc, \ref osMailGet, \ref osMailPut, \ref osMailFree

  88. 

  89. Functions that cannot be called from an ISR are verifying the interrupt status and return in case that they are called

  90. from an ISR context the status code \b osErrorISR. In some implementations this condition might be caught using the HARD FAULT vector.

  91. 

  92. Some CMSIS-RTOS implementations support CMSIS-RTOS function calls from multiple ISR at the same time.

  93. If this is impossible, the CMSIS-RTOS rejects calls by nested ISR functions with the status code \b osErrorISRRecursive.

  94. 

  95. 

  96. <b>Define and reference object definitions</b>

  97. 

  98. With <b>\#define osObjectsExternal</b> objects are defined as external symbols. This allows to create a consistent header file

  99. that is used throughout a project as shown below:

  100. 

  101. <i>Header File</i>

  102. \code

  103. #include <cmsis_os.h>                                         // CMSIS RTOS header file

  104. 

  105. // Thread definition

  106. extern void thread_sample (void const *argument);             // function prototype

  107. osThreadDef (thread_sample, osPriorityBelowNormal, 1, 100);

  108. 

  109. // Pool definition

  110. osPoolDef(MyPool, 10, long);

  111. \endcode

  112. 

  113. 

  114. This header file defines all objects when included in a C/C++ source file. When <b>\#define osObjectsExternal</b> is

  115. present before the header file, the objects are defined as external symbols. A single consistent header file can therefore be

  116. used throughout the whole project.

  117. 

  118. <i>Example</i>

  119. \code

  120. #include "osObjects.h"     // Definition of the CMSIS-RTOS objects

  121. \endcode

  122. 

  123. \code

  124. #define osObjectExternal   // Objects will be defined as external symbols

  125. #include "osObjects.h"     // Reference to the CMSIS-RTOS objects

  126. \endcode

  127. 

  128. */

  129. 

  130. #ifndef _CMSIS_OS_H

  131. #define _CMSIS_OS_H

  132. 

  133. /// \note MUST REMAIN UNCHANGED: \b osCMSIS identifies the CMSIS-RTOS API version.

  134. #define osCMSIS           0x10002      ///< API version (main [31:16] .sub [15:0])

  135. 

  136. /// \note CAN BE CHANGED: \b osCMSIS_KERNEL identifies the underlying RTOS kernel and version number.

  137. #define osCMSIS_KERNEL    0x10000	   ///< RTOS identification and version (main [31:16] .sub [15:0])

  138. 

  139. /// \note MUST REMAIN UNCHANGED: \b osKernelSystemId shall be consistent in every CMSIS-RTOS.

  140. #define osKernelSystemId "KERNEL V1.00"   ///< RTOS identification string

  141. 

  142. /// \note MUST REMAIN UNCHANGED: \b osFeature_xxx shall be consistent in every CMSIS-RTOS.

  143. #define osFeature_MainThread   1       ///< main thread      1=main can be thread, 0=not available

  144. #define osFeature_Pool         1       ///< Memory Pools:    1=available, 0=not available

  145. #define osFeature_MailQ        1       ///< Mail Queues:     1=available, 0=not available

  146. #define osFeature_MessageQ     1       ///< Message Queues:  1=available, 0=not available

  147. #define osFeature_Signals      8       ///< maximum number of Signal Flags available per thread

  148. #define osFeature_Semaphore    30      ///< maximum count for \ref osSemaphoreCreate function

  149. #define osFeature_Wait         1       ///< osWait function: 1=available, 0=not available

  150. #define osFeature_SysTick      1       ///< osKernelSysTick functions: 1=available, 0=not available

  151. 

  152. #include <stdint.h>

  153. #include <stddef.h>

  154. 

  155. #ifdef  __cplusplus

  156. extern "C"

  157. {

  158. #endif

  159. 

  160. 

  161. // ==== Enumeration, structures, defines ====

  162. 

  163. /// Priority used for thread control.

  164. /// \note MUST REMAIN UNCHANGED: \b osPriority shall be consistent in every CMSIS-RTOS.

  165. typedef enum  {

  166.   osPriorityIdle          = -3,          ///< priority: idle (lowest)

  167.   osPriorityLow           = -2,          ///< priority: low

  168.   osPriorityBelowNormal   = -1,          ///< priority: below normal

  169.   osPriorityNormal        =  0,          ///< priority: normal (default)

  170.   osPriorityAboveNormal   = +1,          ///< priority: above normal

  171.   osPriorityHigh          = +2,          ///< priority: high

  172.   osPriorityRealtime      = +3,          ///< priority: realtime (highest)

  173.   osPriorityError         =  0x84        ///< system cannot determine priority or thread has illegal priority

  174. } osPriority;

  175. 

  176. /// Timeout value.

  177. /// \note MUST REMAIN UNCHANGED: \b osWaitForever shall be consistent in every CMSIS-RTOS.

  178. #define osWaitForever     0xFFFFFFFF     ///< wait forever timeout value

  179. 

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

  181. /// \note MUST REMAIN UNCHANGED: \b osStatus shall be consistent in every CMSIS-RTOS.

  182. typedef enum  {

  183.   osOK                    =     0,       ///< function completed; no error or event occurred.

  184.   osEventSignal           =  0x08,       ///< function completed; signal event occurred.

  185.   osEventMessage          =  0x10,       ///< function completed; message event occurred.

  186.   osEventMail             =  0x20,       ///< function completed; mail event occurred.

  187.   osEventTimeout          =  0x40,       ///< function completed; timeout occurred.

  188.   osErrorParameter        =  0x80,       ///< parameter error: a mandatory parameter was missing or specified an incorrect object.

  189.   osErrorResource         =  0x81,       ///< resource not available: a specified resource was not available.

  190.   osErrorTimeoutResource  =  0xC1,       ///< resource not available within given time: a specified resource was not available within the timeout period.

  191.   osErrorISR              =  0x82,       ///< not allowed in ISR context: the function cannot be called from interrupt service routines.

  192.   osErrorISRRecursive     =  0x83,       ///< function called multiple times from ISR with same object.

  193.   osErrorPriority         =  0x84,       ///< system cannot determine priority or thread has illegal priority.

  194.   osErrorNoMemory         =  0x85,       ///< system is out of memory: it was impossible to allocate or reserve memory for the operation.

  195.   osErrorValue            =  0x86,       ///< value of a parameter is out of range.

  196.   osErrorOS               =  0xFF,       ///< unspecified RTOS error: run-time error but no other error message fits.

  197.   os_status_reserved      =  0x7FFFFFFF  ///< prevent from enum down-size compiler optimization.

  198. } osStatus;

  199. 

  200. 

  201. /// Timer type value for the timer definition.

  202. /// \note MUST REMAIN UNCHANGED: \b os_timer_type shall be consistent in every CMSIS-RTOS.

  203. typedef enum  {

  204.   osTimerOnce             =     0,       ///< one-shot timer

  205.   osTimerPeriodic         =     1        ///< repeating timer

  206. } os_timer_type;

  207. 

  208. /// Entry point of a thread.

  209. /// \note MUST REMAIN UNCHANGED: \b os_pthread shall be consistent in every CMSIS-RTOS.

  210. typedef void (*os_pthread) (void const *argument);

  211. 

  212. /// Entry point of a timer call back function.

  213. /// \note MUST REMAIN UNCHANGED: \b os_ptimer shall be consistent in every CMSIS-RTOS.

  214. typedef void (*os_ptimer) (void const *argument);

  215. 

  216. // >>> the following data type definitions may shall adapted towards a specific RTOS

  217. 

  218. /// Thread ID identifies the thread (pointer to a thread control block).

  219. /// \note CAN BE CHANGED: \b os_thread_cb is implementation specific in every CMSIS-RTOS.

  220. typedef struct os_thread_cb *osThreadId;

  221. 

  222. /// Timer ID identifies the timer (pointer to a timer control block).

  223. /// \note CAN BE CHANGED: \b os_timer_cb is implementation specific in every CMSIS-RTOS.

  224. typedef struct os_timer_cb *osTimerId;

  225. 

  226. /// Mutex ID identifies the mutex (pointer to a mutex control block).

  227. /// \note CAN BE CHANGED: \b os_mutex_cb is implementation specific in every CMSIS-RTOS.

  228. typedef struct os_mutex_cb *osMutexId;

  229. 

  230. /// Semaphore ID identifies the semaphore (pointer to a semaphore control block).

  231. /// \note CAN BE CHANGED: \b os_semaphore_cb is implementation specific in every CMSIS-RTOS.

  232. typedef struct os_semaphore_cb *osSemaphoreId;

  233. 

  234. /// Pool ID identifies the memory pool (pointer to a memory pool control block).

  235. /// \note CAN BE CHANGED: \b os_pool_cb is implementation specific in every CMSIS-RTOS.

  236. typedef struct os_pool_cb *osPoolId;

  237. 

  238. /// Message ID identifies the message queue (pointer to a message queue control block).

  239. /// \note CAN BE CHANGED: \b os_messageQ_cb is implementation specific in every CMSIS-RTOS.

  240. typedef struct os_messageQ_cb *osMessageQId;

  241. 

  242. /// Mail ID identifies the mail queue (pointer to a mail queue control block).

  243. /// \note CAN BE CHANGED: \b os_mailQ_cb is implementation specific in every CMSIS-RTOS.

  244. typedef struct os_mailQ_cb *osMailQId;

  245. 

  246. 

  247. /// Thread Definition structure contains startup information of a thread.

  248. /// \note CAN BE CHANGED: \b os_thread_def is implementation specific in every CMSIS-RTOS.

  249. typedef struct os_thread_def  {

  250.   os_pthread               pthread;    ///< start address of thread function

  251.   osPriority             tpriority;    ///< initial thread priority

  252.   uint32_t               instances;    ///< maximum number of instances of that thread function

  253.   uint32_t               stacksize;    ///< stack size requirements in bytes; 0 is default stack size

  254. } osThreadDef_t;

  255. 

  256. /// Timer Definition structure contains timer parameters.

  257. /// \note CAN BE CHANGED: \b os_timer_def is implementation specific in every CMSIS-RTOS.

  258. typedef struct os_timer_def  {

  259.   os_ptimer                 ptimer;    ///< start address of a timer function

  260. } osTimerDef_t;

  261. 

  262. /// Mutex Definition structure contains setup information for a mutex.

  263. /// \note CAN BE CHANGED: \b os_mutex_def is implementation specific in every CMSIS-RTOS.

  264. typedef struct os_mutex_def  {

  265.   uint32_t                   dummy;    ///< dummy value.

  266. } osMutexDef_t;

  267. 

  268. /// Semaphore Definition structure contains setup information for a semaphore.

  269. /// \note CAN BE CHANGED: \b os_semaphore_def is implementation specific in every CMSIS-RTOS.

  270. typedef struct os_semaphore_def  {

  271.   uint32_t                   dummy;    ///< dummy value.

  272. } osSemaphoreDef_t;

  273. 

  274. /// Definition structure for memory block allocation.

  275. /// \note CAN BE CHANGED: \b os_pool_def is implementation specific in every CMSIS-RTOS.

  276. typedef struct os_pool_def  {

  277.   uint32_t                 pool_sz;    ///< number of items (elements) in the pool

  278.   uint32_t                 item_sz;    ///< size of an item

  279.   void                       *pool;    ///< pointer to memory for pool

  280. } osPoolDef_t;

  281. 

  282. /// Definition structure for message queue.

  283. /// \note CAN BE CHANGED: \b os_messageQ_def is implementation specific in every CMSIS-RTOS.

  284. typedef struct os_messageQ_def  {

  285.   uint32_t                queue_sz;    ///< number of elements in the queue

  286.   uint32_t                 item_sz;    ///< size of an item

  287.   void                       *pool;    ///< memory array for messages

  288. } osMessageQDef_t;

  289. 

  290. /// Definition structure for mail queue.

  291. /// \note CAN BE CHANGED: \b os_mailQ_def is implementation specific in every CMSIS-RTOS.

  292. typedef struct os_mailQ_def  {

  293.   uint32_t                queue_sz;    ///< number of elements in the queue

  294.   uint32_t                 item_sz;    ///< size of an item

  295.   void                       *pool;    ///< memory array for mail

  296. } osMailQDef_t;

  297. 

  298. /// Event structure contains detailed information about an event.

  299. /// \note MUST REMAIN UNCHANGED: \b os_event shall be consistent in every CMSIS-RTOS.

  300. ///       However the struct may be extended at the end.

  301. typedef struct  {

  302.   osStatus                 status;     ///< status code: event or error information

  303.   union  {

  304.     uint32_t                    v;     ///< message as 32-bit value

  305.     void                       *p;     ///< message or mail as void pointer

  306.     int32_t               signals;     ///< signal flags

  307.   } value;                             ///< event value

  308.   union  {

  309.     osMailQId             mail_id;     ///< mail id obtained by \ref osMailCreate

  310.     osMessageQId       message_id;     ///< message id obtained by \ref osMessageCreate

  311.   } def;                               ///< event definition

  312. } osEvent;

  313. 

  314. 

  315. //  ==== Kernel Control Functions ====

  316. 

  317. /// Initialize the RTOS Kernel for creating objects.

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

  319. /// \note MUST REMAIN UNCHANGED: \b osKernelInitialize shall be consistent in every CMSIS-RTOS.

  320. osStatus osKernelInitialize (void);

  321. 

  322. /// Start the RTOS Kernel.

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

  324. /// \note MUST REMAIN UNCHANGED: \b osKernelStart shall be consistent in every CMSIS-RTOS.

  325. osStatus osKernelStart (void);

  326. 

  327. /// Check if the RTOS kernel is already started.

  328. /// \note MUST REMAIN UNCHANGED: \b osKernelRunning shall be consistent in every CMSIS-RTOS.

  329. /// \return 0 RTOS is not started, 1 RTOS is started.

  330. int32_t osKernelRunning(void);

  331. 

  332. #if (defined (osFeature_SysTick)  &&  (osFeature_SysTick != 0))     // System Timer available

  333. 

  334. /// Get the RTOS kernel system timer counter 

  335. /// \note MUST REMAIN UNCHANGED: \b osKernelSysTick shall be consistent in every CMSIS-RTOS.

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

  337. uint32_t osKernelSysTick (void);

  338. 

  339. /// The RTOS kernel system timer frequency in Hz

  340. /// \note Reflects the system timer setting and is typically defined in a configuration file.

  341. #define osKernelSysTickFrequency 100000000

  342. 

  343. /// Convert a microseconds value to a RTOS kernel system timer value.

  344. /// \param         microsec     time value in microseconds.

  345. /// \return time value normalized to the \ref osKernelSysTickFrequency

  346. #define osKernelSysTickMicroSec(microsec) (((uint64_t)microsec * (osKernelSysTickFrequency)) / 1000000)

  347. 

  348. #endif    // System Timer available

  349. 

  350. //  ==== Thread Management ====

  351. 

  352. /// Create a Thread Definition with function, priority, and stack requirements.

  353. /// \param         name         name of the thread function.

  354. /// \param         priority     initial priority of the thread function.

  355. /// \param         instances    number of possible thread instances.

  356. /// \param         stacksz      stack size (in bytes) requirements for the thread function.

  357. /// \note CAN BE CHANGED: The parameters to \b osThreadDef shall be consistent but the

  358. ///       macro body is implementation specific in every CMSIS-RTOS.

  359. #if defined (osObjectsExternal)  // object is external

  360. #define osThreadDef(name, priority, instances, stacksz)  \

  361. extern const osThreadDef_t os_thread_def_##name

  362. #else                            // define the object

  363. #define osThreadDef(name, priority, instances, stacksz)  \

  364. const osThreadDef_t os_thread_def_##name = \

  365. { (name), (priority), (instances), (stacksz)  }

  366. #endif

  367. 

  368. /// Access a Thread definition.

  369. /// \param         name          name of the thread definition object.

  370. /// \note CAN BE CHANGED: The parameter to \b osThread shall be consistent but the

  371. ///       macro body is implementation specific in every CMSIS-RTOS.

  372. #define osThread(name)  \

  373. &os_thread_def_##name

  374. 

  375. /// Create a thread and add it to Active Threads and set it to state READY.

  376. /// \param[in]     thread_def    thread definition referenced with \ref osThread.

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

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

  379. /// \note MUST REMAIN UNCHANGED: \b osThreadCreate shall be consistent in every CMSIS-RTOS.

  380. osThreadId osThreadCreate (const osThreadDef_t *thread_def, void *argument);

  381. 

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

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

  384. /// \note MUST REMAIN UNCHANGED: \b osThreadGetId shall be consistent in every CMSIS-RTOS.

  385. osThreadId osThreadGetId (void);

  386. 

  387. /// Terminate execution of a thread and remove it from Active Threads.

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

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

  390. /// \note MUST REMAIN UNCHANGED: \b osThreadTerminate shall be consistent in every CMSIS-RTOS.

  391. osStatus osThreadTerminate (osThreadId thread_id);

  392. 

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

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

  395. /// \note MUST REMAIN UNCHANGED: \b osThreadYield shall be consistent in every CMSIS-RTOS.

  396. osStatus osThreadYield (void);

  397. 

  398. /// Change priority of an active thread.

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

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

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

  402. /// \note MUST REMAIN UNCHANGED: \b osThreadSetPriority shall be consistent in every CMSIS-RTOS.

  403. osStatus osThreadSetPriority (osThreadId thread_id, osPriority priority);

  404. 

  405. /// Get current priority of an active thread.

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

  407. /// \return current priority value of the thread function.

  408. /// \note MUST REMAIN UNCHANGED: \b osThreadGetPriority shall be consistent in every CMSIS-RTOS.

  409. osPriority osThreadGetPriority (osThreadId thread_id);

  410. 

  411. 

  412. //  ==== Generic Wait Functions ====

  413. 

  414. /// Wait for Timeout (Time Delay).

  415. /// \param[in]     millisec      time delay value

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

  417. osStatus osDelay (uint32_t millisec);

  418. 

  419. #if (defined (osFeature_Wait)  &&  (osFeature_Wait != 0))     // Generic Wait available

  420. 

  421. /// Wait for Signal, Message, Mail, or Timeout.

  422. /// \param[in] millisec          timeout value or 0 in case of no time-out

  423. /// \return event that contains signal, message, or mail information or error code.

  424. /// \note MUST REMAIN UNCHANGED: \b osWait shall be consistent in every CMSIS-RTOS.

  425. osEvent osWait (uint32_t millisec);

  426. 

  427. #endif  // Generic Wait available

  428. 

  429. 

  430. //  ==== Timer Management Functions ====

  431. /// Define a Timer object.

  432. /// \param         name          name of the timer object.

  433. /// \param         function      name of the timer call back function.

  434. /// \note CAN BE CHANGED: The parameter to \b osTimerDef shall be consistent but the

  435. ///       macro body is implementation specific in every CMSIS-RTOS.

  436. #if defined (osObjectsExternal)  // object is external

  437. #define osTimerDef(name, function)  \

  438. extern const osTimerDef_t os_timer_def_##name

  439. #else                            // define the object

  440. #define osTimerDef(name, function)  \

  441. const osTimerDef_t os_timer_def_##name = \

  442. { (function) }

  443. #endif

  444. 

  445. /// Access a Timer definition.

  446. /// \param         name          name of the timer object.

  447. /// \note CAN BE CHANGED: The parameter to \b osTimer shall be consistent but the

  448. ///       macro body is implementation specific in every CMSIS-RTOS.

  449. #define osTimer(name) \

  450. &os_timer_def_##name

  451. 

  452. /// Create a timer.

  453. /// \param[in]     timer_def     timer object referenced with \ref osTimer.

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

  455. /// \param[in]     argument      argument to the timer call back function.

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

  457. /// \note MUST REMAIN UNCHANGED: \b osTimerCreate shall be consistent in every CMSIS-RTOS.

  458. osTimerId osTimerCreate (const osTimerDef_t *timer_def, os_timer_type type, void *argument);

  459. 

  460. /// Start or restart a timer.

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

  462. /// \param[in]     millisec      time delay value of the timer.

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

  464. /// \note MUST REMAIN UNCHANGED: \b osTimerStart shall be consistent in every CMSIS-RTOS.

  465. osStatus osTimerStart (osTimerId timer_id, uint32_t millisec);

  466. 

  467. /// Stop the timer.

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

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

  470. /// \note MUST REMAIN UNCHANGED: \b osTimerStop shall be consistent in every CMSIS-RTOS.

  471. osStatus osTimerStop (osTimerId timer_id);

  472. 

  473. /// Delete a timer that was created by \ref osTimerCreate.

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

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

  476. /// \note MUST REMAIN UNCHANGED: \b osTimerDelete shall be consistent in every CMSIS-RTOS.

  477. osStatus osTimerDelete (osTimerId timer_id);

  478. 

  479. 

  480. //  ==== Signal Management ====

  481. 

  482. /// Set the specified Signal Flags of an active thread.

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

  484. /// \param[in]     signals       specifies the signal flags of the thread that should be set.

  485. /// \return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters.

  486. /// \note MUST REMAIN UNCHANGED: \b osSignalSet shall be consistent in every CMSIS-RTOS.

  487. int32_t osSignalSet (osThreadId thread_id, int32_t signals);

  488. 

  489. /// Clear the specified Signal Flags of an active thread.

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

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

  492. /// \return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters.

  493. /// \note MUST REMAIN UNCHANGED: \b osSignalClear shall be consistent in every CMSIS-RTOS.

  494. int32_t osSignalClear (osThreadId thread_id, int32_t signals);

  495. 

  496. /// Wait for one or more Signal Flags to become signaled for the current \b RUNNING thread.

  497. /// \param[in]     signals       wait until all specified signal flags set or 0 for any single signal flag.

  498. /// \param[in]     millisec      timeout value or 0 in case of no time-out.

  499. /// \return event flag information or error code.

  500. /// \note MUST REMAIN UNCHANGED: \b osSignalWait shall be consistent in every CMSIS-RTOS.

  501. osEvent osSignalWait (int32_t signals, uint32_t millisec);

  502. 

  503. 

  504. //  ==== Mutex Management ====

  505. 

  506. /// Define a Mutex.

  507. /// \param         name          name of the mutex object.

  508. /// \note CAN BE CHANGED: The parameter to \b osMutexDef shall be consistent but the

  509. ///       macro body is implementation specific in every CMSIS-RTOS.

  510. #if defined (osObjectsExternal)  // object is external

  511. #define osMutexDef(name)  \

  512. extern const osMutexDef_t os_mutex_def_##name

  513. #else                            // define the object

  514. #define osMutexDef(name)  \

  515. const osMutexDef_t os_mutex_def_##name = { 0 }

  516. #endif

  517. 

  518. /// Access a Mutex definition.

  519. /// \param         name          name of the mutex object.

  520. /// \note CAN BE CHANGED: The parameter to \b osMutex shall be consistent but the

  521. ///       macro body is implementation specific in every CMSIS-RTOS.

  522. #define osMutex(name)  \

  523. &os_mutex_def_##name

  524. 

  525. /// Create and Initialize a Mutex object.

  526. /// \param[in]     mutex_def     mutex definition referenced with \ref osMutex.

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

  528. /// \note MUST REMAIN UNCHANGED: \b osMutexCreate shall be consistent in every CMSIS-RTOS.

  529. osMutexId osMutexCreate (const osMutexDef_t *mutex_def);

  530. 

  531. /// Wait until a Mutex becomes available.

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

  533. /// \param[in]     millisec      timeout value or 0 in case of no time-out.

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

  535. /// \note MUST REMAIN UNCHANGED: \b osMutexWait shall be consistent in every CMSIS-RTOS.

  536. osStatus osMutexWait (osMutexId mutex_id, uint32_t millisec);

  537. 

  538. /// Release a Mutex that was obtained by \ref osMutexWait.

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

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

  541. /// \note MUST REMAIN UNCHANGED: \b osMutexRelease shall be consistent in every CMSIS-RTOS.

  542. osStatus osMutexRelease (osMutexId mutex_id);

  543. 

  544. /// Delete a Mutex that was created by \ref osMutexCreate.

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

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

  547. /// \note MUST REMAIN UNCHANGED: \b osMutexDelete shall be consistent in every CMSIS-RTOS.

  548. osStatus osMutexDelete (osMutexId mutex_id);

  549. 

  550. 

  551. //  ==== Semaphore Management Functions ====

  552. 

  553. #if (defined (osFeature_Semaphore)  &&  (osFeature_Semaphore != 0))     // Semaphore available

  554. 

  555. /// Define a Semaphore object.

  556. /// \param         name          name of the semaphore object.

  557. /// \note CAN BE CHANGED: The parameter to \b osSemaphoreDef shall be consistent but the

  558. ///       macro body is implementation specific in every CMSIS-RTOS.

  559. #if defined (osObjectsExternal)  // object is external

  560. #define osSemaphoreDef(name)  \

  561. extern const osSemaphoreDef_t os_semaphore_def_##name

  562. #else                            // define the object

  563. #define osSemaphoreDef(name)  \

  564. const osSemaphoreDef_t os_semaphore_def_##name = { 0 }

  565. #endif

  566. 

  567. /// Access a Semaphore definition.

  568. /// \param         name          name of the semaphore object.

  569. /// \note CAN BE CHANGED: The parameter to \b osSemaphore shall be consistent but the

  570. ///       macro body is implementation specific in every CMSIS-RTOS.

  571. #define osSemaphore(name)  \

  572. &os_semaphore_def_##name

  573. 

  574. /// Create and Initialize a Semaphore object used for managing resources.

  575. /// \param[in]     semaphore_def semaphore definition referenced with \ref osSemaphore.

  576. /// \param[in]     count         number of available resources.

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

  578. /// \note MUST REMAIN UNCHANGED: \b osSemaphoreCreate shall be consistent in every CMSIS-RTOS.

  579. osSemaphoreId osSemaphoreCreate (const osSemaphoreDef_t *semaphore_def, int32_t count);

  580. 

  581. /// Wait until a Semaphore token becomes available.

  582. /// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.

  583. /// \param[in]     millisec      timeout value or 0 in case of no time-out.

  584. /// \return number of available tokens, or -1 in case of incorrect parameters.

  585. /// \note MUST REMAIN UNCHANGED: \b osSemaphoreWait shall be consistent in every CMSIS-RTOS.

  586. int32_t osSemaphoreWait (osSemaphoreId semaphore_id, uint32_t millisec);

  587. 

  588. /// Release a Semaphore token.

  589. /// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.

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

  591. /// \note MUST REMAIN UNCHANGED: \b osSemaphoreRelease shall be consistent in every CMSIS-RTOS.

  592. osStatus osSemaphoreRelease (osSemaphoreId semaphore_id);

  593. 

  594. /// Delete a Semaphore that was created by \ref osSemaphoreCreate.

  595. /// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.

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

  597. /// \note MUST REMAIN UNCHANGED: \b osSemaphoreDelete shall be consistent in every CMSIS-RTOS.

  598. osStatus osSemaphoreDelete (osSemaphoreId semaphore_id);

  599. 

  600. #endif     // Semaphore available

  601. 

  602. 

  603. //  ==== Memory Pool Management Functions ====

  604. 

  605. #if (defined (osFeature_Pool)  &&  (osFeature_Pool != 0))  // Memory Pool Management available

  606. 

  607. /// \brief Define a Memory Pool.

  608. /// \param         name          name of the memory pool.

  609. /// \param         no            maximum number of blocks (objects) in the memory pool.

  610. /// \param         type          data type of a single block (object).

  611. /// \note CAN BE CHANGED: The parameter to \b osPoolDef shall be consistent but the

  612. ///       macro body is implementation specific in every CMSIS-RTOS.

  613. #if defined (osObjectsExternal)  // object is external

  614. #define osPoolDef(name, no, type)   \

  615. extern const osPoolDef_t os_pool_def_##name

  616. #else                            // define the object

  617. #define osPoolDef(name, no, type)   \

  618. const osPoolDef_t os_pool_def_##name = \

  619. { (no), sizeof(type), NULL }

  620. #endif

  621. 

  622. /// \brief Access a Memory Pool definition.

  623. /// \param         name          name of the memory pool

  624. /// \note CAN BE CHANGED: The parameter to \b osPool shall be consistent but the

  625. ///       macro body is implementation specific in every CMSIS-RTOS.

  626. #define osPool(name) \

  627. &os_pool_def_##name

  628. 

  629. /// Create and Initialize a memory pool.

  630. /// \param[in]     pool_def      memory pool definition referenced with \ref osPool.

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

  632. /// \note MUST REMAIN UNCHANGED: \b osPoolCreate shall be consistent in every CMSIS-RTOS.

  633. osPoolId osPoolCreate (const osPoolDef_t *pool_def);

  634. 

  635. /// Allocate a memory block from a memory pool.

  636. /// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.

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

  638. /// \note MUST REMAIN UNCHANGED: \b osPoolAlloc shall be consistent in every CMSIS-RTOS.

  639. void *osPoolAlloc (osPoolId pool_id);

  640. 

  641. /// Allocate a memory block from a memory pool and set memory block to zero.

  642. /// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.

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

  644. /// \note MUST REMAIN UNCHANGED: \b osPoolCAlloc shall be consistent in every CMSIS-RTOS.

  645. void *osPoolCAlloc (osPoolId pool_id);

  646. 

  647. /// Return an allocated memory block back to a specific memory pool.

  648. /// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.

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

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

  651. /// \note MUST REMAIN UNCHANGED: \b osPoolFree shall be consistent in every CMSIS-RTOS.

  652. osStatus osPoolFree (osPoolId pool_id, void *block);

  653. 

  654. #endif   // Memory Pool Management available

  655. 

  656. 

  657. //  ==== Message Queue Management Functions ====

  658. 

  659. #if (defined (osFeature_MessageQ)  &&  (osFeature_MessageQ != 0))     // Message Queues available

  660. 

  661. /// \brief Create a Message Queue Definition.

  662. /// \param         name          name of the queue.

  663. /// \param         queue_sz      maximum number of messages in the queue.

  664. /// \param         type          data type of a single message element (for debugger).

  665. /// \note CAN BE CHANGED: The parameter to \b osMessageQDef shall be consistent but the

  666. ///       macro body is implementation specific in every CMSIS-RTOS.

  667. #if defined (osObjectsExternal)  // object is external

  668. #define osMessageQDef(name, queue_sz, type)   \

  669. extern const osMessageQDef_t os_messageQ_def_##name

  670. #else                            // define the object

  671. #define osMessageQDef(name, queue_sz, type)   \

  672. const osMessageQDef_t os_messageQ_def_##name = \

  673. { (queue_sz), sizeof (type)  }

  674. #endif

  675. 

  676. /// \brief Access a Message Queue Definition.

  677. /// \param         name          name of the queue

  678. /// \note CAN BE CHANGED: The parameter to \b osMessageQ shall be consistent but the

  679. ///       macro body is implementation specific in every CMSIS-RTOS.

  680. #define osMessageQ(name) \

  681. &os_messageQ_def_##name

  682. 

  683. /// Create and Initialize a Message Queue.

  684. /// \param[in]     queue_def     queue definition referenced with \ref osMessageQ.

  685. /// \param[in]     thread_id     thread ID (obtained by \ref osThreadCreate or \ref osThreadGetId) or NULL.

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

  687. /// \note MUST REMAIN UNCHANGED: \b osMessageCreate shall be consistent in every CMSIS-RTOS.

  688. osMessageQId osMessageCreate (const osMessageQDef_t *queue_def, osThreadId thread_id);

  689. 

  690. /// Put a Message to a Queue.

  691. /// \param[in]     queue_id      message queue ID obtained with \ref osMessageCreate.

  692. /// \param[in]     info          message information.

  693. /// \param[in]     millisec      timeout value or 0 in case of no time-out.

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

  695. /// \note MUST REMAIN UNCHANGED: \b osMessagePut shall be consistent in every CMSIS-RTOS.

  696. osStatus osMessagePut (osMessageQId queue_id, uint32_t info, uint32_t millisec);

  697. 

  698. /// Get a Message or Wait for a Message from a Queue.

  699. /// \param[in]     queue_id      message queue ID obtained with \ref osMessageCreate.

  700. /// \param[in]     millisec      timeout value or 0 in case of no time-out.

  701. /// \return event information that includes status code.

  702. /// \note MUST REMAIN UNCHANGED: \b osMessageGet shall be consistent in every CMSIS-RTOS.

  703. osEvent osMessageGet (osMessageQId queue_id, uint32_t millisec);

  704. 

  705. #endif     // Message Queues available

  706. 

  707. 

  708. //  ==== Mail Queue Management Functions ====

  709. 

  710. #if (defined (osFeature_MailQ)  &&  (osFeature_MailQ != 0))     // Mail Queues available

  711. 

  712. /// \brief Create a Mail Queue Definition.

  713. /// \param         name          name of the queue

  714. /// \param         queue_sz      maximum number of messages in queue

  715. /// \param         type          data type of a single message element

  716. /// \note CAN BE CHANGED: The parameter to \b osMailQDef shall be consistent but the

  717. ///       macro body is implementation specific in every CMSIS-RTOS.

  718. #if defined (osObjectsExternal)  // object is external

  719. #define osMailQDef(name, queue_sz, type) \

  720. extern const osMailQDef_t os_mailQ_def_##name

  721. #else                            // define the object

  722. #define osMailQDef(name, queue_sz, type) \

  723. const osMailQDef_t os_mailQ_def_##name =  \

  724. { (queue_sz), sizeof (type) }

  725. #endif

  726. 

  727. /// \brief Access a Mail Queue Definition.

  728. /// \param         name          name of the queue

  729. /// \note CAN BE CHANGED: The parameter to \b osMailQ shall be consistent but the

  730. ///       macro body is implementation specific in every CMSIS-RTOS.

  731. #define osMailQ(name)  \

  732. &os_mailQ_def_##name

  733. 

  734. /// Create and Initialize mail queue.

  735. /// \param[in]     queue_def     reference to the mail queue definition obtain with \ref osMailQ

  736. /// \param[in]     thread_id     thread ID (obtained by \ref osThreadCreate or \ref osThreadGetId) or NULL.

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

  738. /// \note MUST REMAIN UNCHANGED: \b osMailCreate shall be consistent in every CMSIS-RTOS.

  739. osMailQId osMailCreate (const osMailQDef_t *queue_def, osThreadId thread_id);

  740. 

  741. /// Allocate a memory block from a mail.

  742. /// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.

  743. /// \param[in]     millisec      timeout value or 0 in case of no time-out

  744. /// \return pointer to memory block that can be filled with mail or NULL in case of error.

  745. /// \note MUST REMAIN UNCHANGED: \b osMailAlloc shall be consistent in every CMSIS-RTOS.

  746. void *osMailAlloc (osMailQId queue_id, uint32_t millisec);

  747. 

  748. /// Allocate a memory block from a mail and set memory block to zero.

  749. /// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.

  750. /// \param[in]     millisec      timeout value or 0 in case of no time-out

  751. /// \return pointer to memory block that can be filled with mail or NULL in case of error.

  752. /// \note MUST REMAIN UNCHANGED: \b osMailCAlloc shall be consistent in every CMSIS-RTOS.

  753. void *osMailCAlloc (osMailQId queue_id, uint32_t millisec);

  754. 

  755. /// Put a mail to a queue.

  756. /// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.

  757. /// \param[in]     mail          memory block previously allocated with \ref osMailAlloc or \ref osMailCAlloc.

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

  759. /// \note MUST REMAIN UNCHANGED: \b osMailPut shall be consistent in every CMSIS-RTOS.

  760. osStatus osMailPut (osMailQId queue_id, void *mail);

  761. 

  762. /// Get a mail from a queue.

  763. /// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.

  764. /// \param[in]     millisec      timeout value or 0 in case of no time-out

  765. /// \return event that contains mail information or error code.

  766. /// \note MUST REMAIN UNCHANGED: \b osMailGet shall be consistent in every CMSIS-RTOS.

  767. osEvent osMailGet (osMailQId queue_id, uint32_t millisec);

  768. 

  769. /// Free a memory block from a mail.

  770. /// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.

  771. /// \param[in]     mail          pointer to the memory block that was obtained with \ref osMailGet.

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

  773. /// \note MUST REMAIN UNCHANGED: \b osMailFree shall be consistent in every CMSIS-RTOS.

  774. osStatus osMailFree (osMailQId queue_id, void *mail);

  775. 

  776. #endif  // Mail Queues available

  777. 

  778. 

  779. #ifdef  __cplusplus

  780. }

  781. #endif

  782. 

  783. #endif  // _CMSIS_OS_H