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130   <div class="headertitle"><div class="title">OS Tick API </div></div>
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133 <div class="textblock"><p>The CMSIS OS Tick API may be used by an RTOS implementation to be easily portable across the different Cortex-M and Cortex-A processors. It provides a generic interface to a kernel system tick timer and defines the following functions:</p>
134 <ul>
135 <li>The Reference for <a class="el" href="group__CMSIS__RTOS__TickAPI.html">OS Tick API</a> provides details about these functions:<ul>
136 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#ga5eeffb4d9dc6c6802fee8898096d9a59">OS_Tick_Setup</a> :  Setup OS Tick timer to generate periodic RTOS Kernel Ticks.  </li>
137 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#gaaa0d6ddef6816e8e5650fde3daf191e7">OS_Tick_Enable</a> :  Enable OS Tick timer interrupt.  </li>
138 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#ga50fc040b66fabd1945d2bd1d0d05661d">OS_Tick_Disable</a> :  Disable OS Tick timer interrupt.  </li>
139 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#ga14c430d2b363ebd9f904b0822a9314e7">OS_Tick_AcknowledgeIRQ</a> :  Acknowledge execution of OS Tick timer interrupt.  </li>
140 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#gaa8b4eca23e3ffe2df403291958cdc905">OS_Tick_GetIRQn</a> :  Get OS Tick timer IRQ number.  </li>
141 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#ga936217ea28236fb57648973e0d8f627a">OS_Tick_GetClock</a> :  Get OS Tick timer clock frequency.  </li>
142 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#ga123151dc19d5a94a68f12cdbf61a9bb5">OS_Tick_GetInterval</a> :  Get OS Tick timer interval reload value.  </li>
143 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#gaa64a145a554f1e5077848938d7f39c92">OS_Tick_GetCount</a> :  Get OS Tick timer counter value.  </li>
144 <li><a class="el" href="group__CMSIS__RTOS__TickAPI.html#ga1f9a593126b7f0b66fc526c2cebd6192">OS_Tick_GetOverflow</a> :  Get OS Tick timer overflow status.   </li>
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