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align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#structosTimerAttr__t">osTimerAttr_t</a></td></tr> <tr class="memdesc:structosTimerAttr__t"><td class="mdescLeft"> </td><td class="mdescRight">Attributes structure for timer. <a href="group__CMSIS__RTOS__TimerMgmt.html#structosTimerAttr__t">More...</a><br/></td></tr> <tr class="separator:structosTimerAttr__t"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="typedef-members"></a> Typedefs</h2></td></tr> <tr class="memitem:gaad5409379689ee27bb0a0b56ea4a4b34"><td class="memItemLeft" align="right" valign="top">typedef void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a></td></tr> <tr class="separator:gaad5409379689ee27bb0a0b56ea4a4b34"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gaacf768c1ec64b020598afb985d7b30be"><td class="memItemLeft" align="right" valign="top">typedef void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a> )(void *argument)</td></tr> <tr class="memdesc:gaacf768c1ec64b020598afb985d7b30be"><td class="mdescLeft"> </td><td class="mdescRight">Entry point of a timer call back function. <a href="#gaacf768c1ec64b020598afb985d7b30be">More...</a><br/></td></tr> <tr class="separator:gaacf768c1ec64b020598afb985d7b30be"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a> Enumerations</h2></td></tr> <tr class="memitem:ga7dc24a4c2b90334427081c3da7a71915"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">osTimerType_t</a> { <br/>   <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915ad21712f8df5f97069c82dc9eec37b951">osTimerOnce</a> = 0, <br/>   <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a> = 1 <br/> }</td></tr> <tr class="memdesc:ga7dc24a4c2b90334427081c3da7a71915"><td class="mdescLeft"> </td><td class="mdescRight">Timer type. <a href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">More...</a><br/></td></tr> <tr class="separator:ga7dc24a4c2b90334427081c3da7a71915"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:gad4e7f785c5f700a509f55a3bf6a62bec"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a> (<a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a> func, <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">osTimerType_t</a> type, void *argument, const <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#structosTimerAttr__t">osTimerAttr_t</a> *attr)</td></tr> <tr class="memdesc:gad4e7f785c5f700a509f55a3bf6a62bec"><td class="mdescLeft"> </td><td class="mdescRight">Create and Initialize a timer. <a href="#gad4e7f785c5f700a509f55a3bf6a62bec">More...</a><br/></td></tr> <tr class="separator:gad4e7f785c5f700a509f55a3bf6a62bec"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga4f82a98eee4d9ea79507e44340d3d319"><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga4f82a98eee4d9ea79507e44340d3d319">osTimerGetName</a> (<a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> timer_id)</td></tr> <tr class="memdesc:ga4f82a98eee4d9ea79507e44340d3d319"><td class="mdescLeft"> </td><td class="mdescRight">Get name of a timer. <a href="#ga4f82a98eee4d9ea79507e44340d3d319">More...</a><br/></td></tr> <tr class="separator:ga4f82a98eee4d9ea79507e44340d3d319"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gab6ee2859ea657641b7adfac599b8121d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a> (<a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> timer_id, uint32_t ticks)</td></tr> <tr class="memdesc:gab6ee2859ea657641b7adfac599b8121d"><td class="mdescLeft"> </td><td class="mdescRight">Start or restart a timer. <a href="#gab6ee2859ea657641b7adfac599b8121d">More...</a><br/></td></tr> <tr class="separator:gab6ee2859ea657641b7adfac599b8121d"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gabd7a89356da7717293eb0bc5d87b8ac9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gabd7a89356da7717293eb0bc5d87b8ac9">osTimerStop</a> (<a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> timer_id)</td></tr> <tr class="memdesc:gabd7a89356da7717293eb0bc5d87b8ac9"><td class="mdescLeft"> </td><td class="mdescRight">Stop a timer. <a href="#gabd7a89356da7717293eb0bc5d87b8ac9">More...</a><br/></td></tr> <tr class="separator:gabd7a89356da7717293eb0bc5d87b8ac9"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ga69d3589f54194022c30dd01e45ec6741"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga69d3589f54194022c30dd01e45ec6741">osTimerIsRunning</a> (<a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> timer_id)</td></tr> <tr class="memdesc:ga69d3589f54194022c30dd01e45ec6741"><td class="mdescLeft"> </td><td class="mdescRight">Check if a timer is running. <a href="#ga69d3589f54194022c30dd01e45ec6741">More...</a><br/></td></tr> <tr class="separator:ga69d3589f54194022c30dd01e45ec6741"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:gad0001dd74721ab461789324806db2453"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad0001dd74721ab461789324806db2453">osTimerDelete</a> (<a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> timer_id)</td></tr> <tr class="memdesc:gad0001dd74721ab461789324806db2453"><td class="mdescLeft"> </td><td class="mdescRight">Delete a timer. <a href="#gad0001dd74721ab461789324806db2453">More...</a><br/></td></tr> <tr class="separator:gad0001dd74721ab461789324806db2453"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Description</h2> <p>In addition to the <a class="el" href="group__CMSIS__RTOS__Wait.html">Generic Wait Functions</a> CMSIS-RTOS also supports virtual timer objects. These timer objects can trigger the execution of a function (not threads). When a timer expires, a callback function is executed to run associated code with the timer. Each timer can be configured as a one-shot or a periodic timer. A periodic timer repeats its operation until it is <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad0001dd74721ab461789324806db2453">deleted</a> or <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gabd7a89356da7717293eb0bc5d87b8ac9">stopped</a>. All timers can be <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">started, restarted</a>, or <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gabd7a89356da7717293eb0bc5d87b8ac9">stopped</a>.</p> <dl class="section note"><dt>Note</dt><dd>RTX handles Timers in the thread <b>osRtxTimerThread</b>. Callback functions run under control of this thread and may use other CMSIS-RTOS API calls. The <b>osRtxTimerThread</b> is configured in <a class="el" href="config_rtx5.html#timerConfig">Timer Configuration</a>. </dd> <dd> Timer management functions cannot be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> <p>The figure below shows the behavior of a periodic timer. For one-shot timers, the timer stops after execution of the callback function.</p> <div class="image"> <img src="Timer.png" alt="Timer.png"/> <div class="caption"> Behavior of a Periodic Timer</div></div> <h2>Working with Timers </h2> <p>The following steps are required to use a timer:</p> <ol type="1"> <li>Define the timers: <div class="fragment"><div class="line"><a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> one_shot_id, periodic_id;</div> </div><!-- fragment --></li> <li>Instantiate and start the timers: <div class="fragment"><div class="line"><span class="comment">// creates a one-shot timer:</span></div> <div class="line">one_shot_id = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&one_shot_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ad21712f8df5f97069c82dc9eec37b951">osTimerOnce</a>, (<span class="keywordtype">void</span> *)0); <span class="comment">// (void*)0 is passed as an argument</span></div> <div class="line"> <span class="comment">// to the callback function</span></div> <div class="line"> </div> <div class="line"><span class="comment">// creates a periodic timer:</span></div> <div class="line">periodic_id = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&periodic_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a>, (<span class="keywordtype">void</span> *)5); <span class="comment">// (void*)5 is passed as an argument</span></div> <div class="line"> <span class="comment">// to the callback function</span></div> <div class="line"><a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a>(one_shot_id, 500);</div> <div class="line"><a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a>(periodic_id, 1500);</div> </div><!-- fragment --> </li> </ol> <hr/><h2 class="groupheader">Data Structure Documentation</h2> <a name="structosTimerAttr__t" id="structosTimerAttr__t"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">struct osTimerAttr_t</td> </tr> </table> </div><div class="memdoc"> <div class="textblock"></div><table class="fieldtable"> <tr><th colspan="3">Data Fields</th></tr> <tr><td class="fieldtype"> <a class="anchor" id="a8f8f80d37794cde9472343e4487ba3eb"></a>const char *</td> <td class="fieldname"> name</td> <td class="fielddoc"> name of the timer </td></tr> <tr><td class="fieldtype"> <a class="anchor" id="a712a8f140170e6798f561e783265a279"></a>uint32_t</td> <td class="fieldname"> attr_bits</td> <td class="fielddoc"> attribute bits </td></tr> <tr><td class="fieldtype"> <a class="anchor" id="a8c66c30fe3b487298af0e70eb93a197a"></a>void *</td> <td class="fieldname"> cb_mem</td> <td class="fielddoc"> memory for control block </td></tr> <tr><td class="fieldtype"> <a class="anchor" id="a5c542fd75887b7be589b39a2062910de"></a>uint32_t</td> <td class="fieldname"> cb_size</td> <td class="fielddoc"> size of provided memory for control block </td></tr> </table> </div> </div> <h2 class="groupheader">Typedef Documentation</h2> <a class="anchor" id="gaad5409379689ee27bb0a0b56ea4a4b34"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a></td> </tr> </table> </div><div class="memdoc"> <p>Timer ID identifies the timer.</p> <p>Instances of this type hold a reference to a timer object. </p> </div> </div> <a class="anchor" id="gaacf768c1ec64b020598afb985d7b30be"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void(* osTimerFunc_t)(void *argument)</td> </tr> </table> </div><div class="memdoc"> </div> </div> <h2 class="groupheader">Enumeration Type Documentation</h2> <a class="anchor" id="ga7dc24a4c2b90334427081c3da7a71915"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">enum <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">osTimerType_t</a></td> </tr> </table> </div><div class="memdoc"> <p>The <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">osTimerType_t</a> specifies the a repeating (periodic) or one-shot timer for the function <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>. </p> <table class="fieldtable"> <tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="ga7dc24a4c2b90334427081c3da7a71915ad21712f8df5f97069c82dc9eec37b951"></a>osTimerOnce</em> </td><td class="fielddoc"> <p>One-shot timer. </p> </td></tr> <tr><td class="fieldname"><em><a class="anchor" id="ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788"></a>osTimerPeriodic</em> </td><td class="fielddoc"> <p>Repeating timer. </p> </td></tr> </table> </div> </div> <h2 class="groupheader">Function Documentation</h2> <a class="anchor" id="gad4e7f785c5f700a509f55a3bf6a62bec"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> osTimerNew </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a> </td> <td class="paramname"><em>func</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">osTimerType_t</a> </td> <td class="paramname"><em>type</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">void * </td> <td class="paramname"><em>argument</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#structosTimerAttr__t">osTimerAttr_t</a> * </td> <td class="paramname"><em>attr</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramdir">[in]</td><td class="paramname">func</td><td>start address of a timer call back function. </td></tr> <tr><td class="paramdir">[in]</td><td class="paramname">type</td><td>osTimerOnce for one-shot or osTimerPeriodic for periodic behavior. </td></tr> <tr><td class="paramdir">[in]</td><td class="paramname">argument</td><td>argument to the timer call back function. </td></tr> <tr><td class="paramdir">[in]</td><td class="paramname">attr</td><td>timer attributes; NULL: default values. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>timer ID for reference by other functions or NULL in case of error.</dd></dl> <p>The function <b>osTimerNew</b> creates an one-shot or periodic timer and associates it with a callback function with <em>argument</em>. The timer is in stopped state until it is started with <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a>.</p> <p>The parameter <em>func</em> specifies the start address of the timer callback function.</p> <p>The parameter <em>type</em> specifies the type of the timer (refer to <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#ga7dc24a4c2b90334427081c3da7a71915">osTimerType_t</a>).</p> <p>The parameter <em>attr</em> sets the timer attributes (refer to <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#structosTimerAttr__t">osTimerAttr_t</a>). Default attributes will be used if set to <span class="XML-Token">NULL</span>.</p> <p>The function <b>osTimerNew</b> returns the pointer to the timer object identifier or <span class="XML-Token">NULL</span> in case of an error.</p> <dl class="section note"><dt>Note</dt><dd>This function <b>cannot</b> be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> <p><b>Code Example</b> </p> <div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os2_8h.html">cmsis_os2.h</a>"</span></div> <div class="line"> </div> <div class="line"><span class="keywordtype">void</span> Timer1_Callback (<span class="keywordtype">void</span> <span class="keyword">const</span> *arg); <span class="comment">// prototypes for timer callback function</span></div> <div class="line"><span class="keywordtype">void</span> Timer2_Callback (<span class="keywordtype">void</span> <span class="keyword">const</span> *arg); </div> <div class="line"> </div> <div class="line">uint32_t exec1; <span class="comment">// argument for the timer call back function</span></div> <div class="line">uint32_t exec2; <span class="comment">// argument for the timer call back function</span></div> <div class="line"> </div> <div class="line"><span class="keywordtype">void</span> TimerCreate_example (<span class="keywordtype">void</span>) {</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> id1; <span class="comment">// timer id</span></div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> id2; <span class="comment">// timer id</span></div> <div class="line"> </div> <div class="line"> <span class="comment">// Create one-shoot timer</span></div> <div class="line"> exec1 = 1;</div> <div class="line"> id1 = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a> ((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&Timer1_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ad21712f8df5f97069c82dc9eec37b951">osTimerOnce</a>, &exec1, NULL);</div> <div class="line"> <span class="keywordflow">if</span> (id1 != NULL) {</div> <div class="line"> <span class="comment">// One-shoot timer created</span></div> <div class="line"> }</div> <div class="line"> </div> <div class="line"> <span class="comment">// Create periodic timer</span></div> <div class="line"> exec2 = 2;</div> <div class="line"> id2 = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a> ((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&Timer2_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a>, &exec2, NULL);</div> <div class="line"> <span class="keywordflow">if</span> (id2 != NULL) {</div> <div class="line"> <span class="comment">// Periodic timer created</span></div> <div class="line"> }</div> <div class="line"> :</div> <div class="line">}</div> </div><!-- fragment --> </div> </div> <a class="anchor" id="ga4f82a98eee4d9ea79507e44340d3d319"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">*const char * osTimerGetName </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> </td> <td class="paramname"><em>timer_id</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramdir">[in]</td><td class="paramname">timer_id</td><td>timer ID obtained by <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>name as NULL terminated string.</dd></dl> <p>The function <b>osTimerGetName</b> returns the pointer to the name string of the timer identified by parameter <em>timer_id</em> or <span class="XML-Token">NULL</span> in case of an error.</p> <dl class="section note"><dt>Note</dt><dd>This function <b>cannot</b> be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>. </dd></dl> </div> </div> <a class="anchor" id="gab6ee2859ea657641b7adfac599b8121d"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> osTimerStart </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> </td> <td class="paramname"><em>timer_id</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">uint32_t </td> <td class="paramname"><em>ticks</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramdir">[in]</td><td class="paramname">timer_id</td><td>timer ID obtained by <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>. </td></tr> <tr><td class="paramdir">[in]</td><td class="paramname">ticks</td><td><a class="el" href="theory_of_operation.html#CMSIS_RTOS_TimeOutValue">time ticks</a> value of the timer. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> <p>The function <b>osTimerStart</b> starts or restarts a timer specified by the parameter <em>timer_id</em>. The parameter <em>ticks</em> specifies the value of the timer in <a class="el" href="theory_of_operation.html#CMSIS_RTOS_TimeOutValue">time ticks</a>.</p> <p>Possible <a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> return values:</p> <ul> <li><em>osOK:</em> the specified timer has been started or restarted.</li> <li><em>osErrorISR:</em> <b>osTimerStart</b> cannot be called from interrupt service routines.</li> <li><em>osErrorParameter:</em> parameter <em>timer_id</em> is either <span class="XML-Token">NULL</span> or invalid or <em>ticks</em> is incorrect.</li> <li><em>osErrorResource:</em> the timer specified by parameter <em>timer_id</em> is in an invalid timer state.</li> </ul> <dl class="section note"><dt>Note</dt><dd>This function <b>cannot</b> be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> <p><b>Code Example</b> </p> <div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os2_8h.html">cmsis_os2.h</a>"</span></div> <div class="line"> </div> <div class="line"><span class="keywordtype">void</span> Timer_Callback (<span class="keywordtype">void</span> <span class="keyword">const</span> *arg) { <span class="comment">// timer callback function</span></div> <div class="line"> <span class="comment">// arg contains &exec</span></div> <div class="line"> <span class="comment">// called every second after osTimerStart</span></div> <div class="line">} </div> <div class="line"> </div> <div class="line">uint32_t exec; <span class="comment">// argument for the timer call back function</span></div> <div class="line"> </div> <div class="line"><span class="keywordtype">void</span> TimerStart_example (<span class="keywordtype">void</span>) {</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> id; <span class="comment">// timer id</span></div> <div class="line"> uint32_t timerDelay; <span class="comment">// timer value</span></div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> status; <span class="comment">// function return status</span></div> <div class="line"> </div> <div class="line"> <span class="comment">// Create periodic timer</span></div> <div class="line"> exec = 1;</div> <div class="line"> <span class="keywordtype">id</span> = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a> ((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&Timer_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a>, &exec, NULL);</div> <div class="line"> <span class="keywordflow">if</span> (<span class="keywordtype">id</span>) {</div> <div class="line"> timerDelay = 1000;</div> <div class="line"> status = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a> (<span class="keywordtype">id</span>, timerDelay); <span class="comment">// start timer</span></div> <div class="line"> <span class="keywordflow">if</span> (status != <a class="code" href="cmsis__os2_8h.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813ea9e1c9e2550bb4de8969a935acffc968f">osOK</a>) {</div> <div class="line"> <span class="comment">// Timer could not be started</span></div> <div class="line"> } </div> <div class="line"> }</div> <div class="line"> ;</div> <div class="line">}</div> </div><!-- fragment --> </div> </div> <a class="anchor" id="gabd7a89356da7717293eb0bc5d87b8ac9"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> osTimerStop </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> </td> <td class="paramname"><em>timer_id</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramdir">[in]</td><td class="paramname">timer_id</td><td>timer ID obtained by <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> <p>The function <b>osTimerStop</b> stops a timer specified by the parameter <em>timer_id</em>.</p> <p>Possible <a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> return values:</p> <ul> <li><em>osOK:</em> the specified timer has been stopped.</li> <li><em>osErrorISR:</em> <b>osTimerStop</b> cannot be called from interrupt service routines.</li> <li><em>osErrorParameter:</em> parameter <em>timer_id</em> is either <span class="XML-Token">NULL</span> or invalid.</li> <li><em>osErrorResource:</em> the timer specified by parameter <em>timer_id</em> is not running (you can only stop a running timer).</li> </ul> <dl class="section note"><dt>Note</dt><dd>This function <b>cannot</b> be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> <p><b>Code Example</b> </p> <div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os2_8h.html">cmsis_os2.h</a>"</span></div> <div class="line"> </div> <div class="line"><span class="keywordtype">void</span> Timer_Callback (<span class="keywordtype">void</span> <span class="keyword">const</span> *arg); <span class="comment">// prototype for timer callback function</span></div> <div class="line"> </div> <div class="line">uint32_t exec; <span class="comment">// argument for the timer call back function</span></div> <div class="line"></div> <div class="line"><span class="keywordtype">void</span> TimerStop_example (<span class="keywordtype">void</span>) {</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> id; <span class="comment">// timer id</span></div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> status; <span class="comment">// function return status</span></div> <div class="line"> </div> <div class="line"> <span class="comment">// Create periodic timer</span></div> <div class="line"> exec = 1;</div> <div class="line"> <span class="keywordtype">id</span> = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a> ((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&Timer_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a>, &exec, NULL);</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a> (<span class="keywordtype">id</span>, 1000); <span class="comment">// start timer</span></div> <div class="line"> :</div> <div class="line"> status = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gabd7a89356da7717293eb0bc5d87b8ac9">osTimerStop</a> (<span class="keywordtype">id</span>); <span class="comment">// stop timer</span></div> <div class="line"> <span class="keywordflow">if</span> (status != <a class="code" href="cmsis__os2_8h.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813ea9e1c9e2550bb4de8969a935acffc968f">osOK</a>) {</div> <div class="line"> <span class="comment">// Timer could not be stopped</span></div> <div class="line"> } </div> <div class="line"> ;</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a> (<span class="keywordtype">id</span>, 1000); <span class="comment">// start timer again</span></div> <div class="line"> ;</div> <div class="line">}</div> </div><!-- fragment --> </div> </div> <a class="anchor" id="ga69d3589f54194022c30dd01e45ec6741"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">uint32_t osTimerIsRunning </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> </td> <td class="paramname"><em>timer_id</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramdir">[in]</td><td class="paramname">timer_id</td><td>timer ID obtained by <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>0 not running, 1 running.</dd></dl> <p>the function <b>osTimerIsRunning</b> checks whether a timer specified by parameter <em>timer_id</em> is running. It returns <span class="XML-Token">1</span> if the timer is running and <span class="XML-Token">0</span> if the timer is stopped or an error occurred.</p> <dl class="section note"><dt>Note</dt><dd>This function <b>cannot</b> be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>. </dd></dl> </div> </div> <a class="anchor" id="gad0001dd74721ab461789324806db2453"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> osTimerDelete </td> <td>(</td> <td class="paramtype"><a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> </td> <td class="paramname"><em>timer_id</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramdir">[in]</td><td class="paramname">timer_id</td><td>timer ID obtained by <a class="el" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a>. </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> <p>The function <b>osTimerDelete</b> deletes the timer specified by parameter <em>timer_id</em>.</p> <p>Possible <a class="el" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> return values:</p> <ul> <li><em>osOK:</em> the specified timer has been deleted.</li> <li><em>osErrorISR:</em> <b>osTimerDelete</b> cannot be called from interrupt service routines.</li> <li><em>osErrorParameter:</em> parameter <em>timer_id</em> is either <span class="XML-Token">NULL</span> or invalid.</li> <li><em>osErrorResource:</em> the timer specified by parameter <em>timer_id</em> is in an invalid timer state.</li> </ul> <dl class="section note"><dt>Note</dt><dd>This function <b>cannot</b> be called from <a class="el" href="theory_of_operation.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> <p><b>Code Example</b> </p> <div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os2_8h.html">cmsis_os2.h</a>"</span></div> <div class="line"></div> <div class="line"><span class="keywordtype">void</span> Timer_Callback (<span class="keywordtype">void</span> <span class="keyword">const</span> *arg); <span class="comment">// prototype for timer callback function</span></div> <div class="line"> </div> <div class="line">uint32_t exec; <span class="comment">// argument for the timer call back function</span></div> <div class="line"></div> <div class="line"><span class="keywordtype">void</span> TimerDelete_example (<span class="keywordtype">void</span>) {</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaad5409379689ee27bb0a0b56ea4a4b34">osTimerId_t</a> id; <span class="comment">// timer id</span></div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__Definitions.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813e">osStatus_t</a> status; <span class="comment">// function return status </span></div> <div class="line"> </div> <div class="line"> <span class="comment">// Create periodic timer</span></div> <div class="line"> exec = 1;</div> <div class="line"> <span class="keywordtype">id</span> = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad4e7f785c5f700a509f55a3bf6a62bec">osTimerNew</a> ((<a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gaacf768c1ec64b020598afb985d7b30be">osTimerFunc_t</a>)&Timer_Callback, <a class="code" href="cmsis__os2_8h.html#ga7dc24a4c2b90334427081c3da7a71915ab9c91f9699162edb09bb7c90c11c8788">osTimerPeriodic</a>, &exec, NULL);</div> <div class="line"> <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gab6ee2859ea657641b7adfac599b8121d">osTimerStart</a> (<span class="keywordtype">id</span>, 1000UL); <span class="comment">// start timer</span></div> <div class="line"> ;</div> <div class="line"> status = <a class="code" href="group__CMSIS__RTOS__TimerMgmt.html#gad0001dd74721ab461789324806db2453">osTimerDelete</a> (<span class="keywordtype">id</span>); <span class="comment">// stop and delete timer</span></div> <div class="line"> <span class="keywordflow">if</span> (status != <a class="code" href="cmsis__os2_8h.html#ga6c0dbe6069e4e7f47bb4cd32ae2b813ea9e1c9e2550bb4de8969a935acffc968f">osOK</a>) {</div> <div class="line"> <span class="comment">// Timer could not be deleted</span></div> <div class="line"> } </div> <div class="line"> ;</div> <div class="line">}</div> </div><!-- fragment --> </div> </div> </div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="footer">Generated on Wed Feb 8 2017 10:21:04 for CMSIS-RTOS2 by ARM Ltd. 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