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+ <h2 id="os_cputime_ticks_to_nsecs"><font color="F2853F" style="font-size:24pt">os_cputime_ticks_to_nsecs</font></h2>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">uint32_t</span> <span style="color: #000000">os_cputime_ticks_to_nsecs</span>(<span style="color: #A90D91">uint32_t</span> <span style="color: #000000">ticks</span>)
+</pre></div>
+
+
+<p>Converts cputime ticks to nanoseconds.</p>
+<h4 id="arguments">Arguments</h4>
+<table>
+<thead>
+<tr>
+<th>Arguments</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>ticks</code></td>
+<td>Number of cputime ticks to convert to nanoseconds.</td>
+</tr>
+</tbody>
+</table>
+<h4 id="returned-values">Returned values</h4>
+<p>The number of nanoseconds in <code>ticks</code> number of ticks.</p>
+<h4 id="notes">Notes</h4>
+<h4 id="example">Example</h4>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">uint32_t</span> <span style="color: #000000">num_nsecs</span>;
+<span style="color: #000000">num_nsecs</span> <span style="color: #000000">=</span> <span style="color: #000000">os_cputime_ticks_to_nsecs</span>(<span style="color: #1C01CE">1000000</span>);
+</pre></div>
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+ <h2 id="os_cputime_ticks_to_usecs"><font color="F2853F" style="font-size:24pt">os_cputime_ticks_to_usecs</font></h2>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">uint32_t</span> <span style="color: #000000">os_cputime_ticks_to_usecs</span>(<span style="color: #A90D91">uint32_t</span> <span style="color: #000000">ticks</span>)
+</pre></div>
+
+
+<p>Converts a specified number of cputime ticks to microseconds.</p>
+<h4 id="arguments">Arguments</h4>
+<table>
+<thead>
+<tr>
+<th>Arguments</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>ticks</code></td>
+<td>Number of cputime ticks to convert to microseconds.</td>
+</tr>
+</tbody>
+</table>
+<h4 id="returned-values">Returned values</h4>
+<p>The number of microseconds in <code>ticks</code> number of ticks.</p>
+<h4 id="notes">Notes</h4>
+<h4 id="example">Example</h4>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">uint32_t</span> <span style="color: #000000">num_usecs</span>;
+<span style="color: #000000">num_usecs</span> <span style="color: #000000">=</span> <span style="color: #000000">os_cputime_ticks_to_usecs</span>(<span style="color: #1C01CE">1000000</span>);
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+
+ <h2 id="os_cputime_timer_init"><font color="F2853F" style="font-size:24pt">os_cputime_timer_init</font></h2>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">void</span> <span style="color: #000000">os_cputime_timer_init</span>(<span style="color: #A90D91">struct</span> <span style="color: #000000">hal_timer</span> <span style="color: #000000">*timer</span>, <span style="color: #000000">hal_timer_cb</span> <span style="color: #000000">fp</span>, <span style="color: #A90D91">void</span> <span style="color: #000000">*arg</span>)
+</pre></div>
+
+
+<p>Initializes a cputime timer, indicated by <code>timer</code>, with a pointer to a callback function to call when the timer expires. When an optional opaque argument is specified, it is passed to the timer callback function. </p>
+<p>The callback function has the following prototype:</p>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">void</span> <span style="color: #000000">hal_timer_cb</span>(<span style="color: #A90D91">void</span> <span style="color: #000000">*arg</span>)
+</pre></div>
+
+
+<h4 id="arguments">Arguments</h4>
+<table>
+<thead>
+<tr>
+<th>Arguments</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>timer</code></td>
+<td>Pointer to the hal_timer to initialize. This value cannot be NULL.</td>
+</tr>
+<tr>
+<td><code>fp</code></td>
+<td>Pointer to the callback function to call when the timer expires. This value cannot be NULL.</td>
+</tr>
+<tr>
+<td><code>arg</code></td>
+<td>Optional opaque argument to pass to the hal timer callback function.</td>
+</tr>
+</tbody>
+</table>
+<h4 id="returned-values">Returned values</h4>
+<p>N/A</p>
+<h4 id="notes">Notes</h4>
+<h4 id="example">Example</h4>
+<p>Example of ble_ll setting up a response timer:</p>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #000000">ble_ll_wfr_timer_exp</span>(<span style="color: #A90D91">void</span> <span style="color: #000000">*arg</span>)
+{
+ <span style="color: #A90D91">int</span> <span style="color: #000000">rx_start</span>;
+ <span style="color: #A90D91">uint8_t</span> <span style="color: #000000">lls</span>;
+
+ ...
+
+ <span style="color: #177500">/* If we have started a reception, there is nothing to do here */</span>
+ <span style="color: #A90D91">if</span> (<span style="color: #000000">!rx_start</span>) {
+ <span style="color: #A90D91">switch</span> (<span style="color: #000000">lls</span>) {
+ <span style="color: #A90D91">case</span> <span style="color: #000000">BLE_LL_STATE_ADV</span>:
+ <span style="color: #000000">ble_ll_adv_wfr_timer_exp</span>();
+ <span style="color: #A90D91">break</span>;
+
+ ...
+
+ <span style="color: #177500">/* Do nothing here. Fall through intentional */</span>
+ <span style="color: #A90D91">case</span> <span style="color: #000000">BLE_LL_STATE_INITIATING</span>:
+ <span style="color: #A90D91">default</span><span style="color: #000000">:</span>
+ <span style="color: #A90D91">break</span>;
+ }
+ }
+}
+
+<span style="color: #A90D91">void</span> <span style="color: #000000">ble_ll_init</span>(<span style="color: #A90D91">void</span>)
+{
+ ...
+
+ <span style="color: #000000">os_cputime_timer_init</span>(<span style="color: #000000">&g_ble_ll_data</span>.<span style="color: #000000">ll_wfr_timer</span>, <span style="color: #000000">ble_ll_wfr_timer_exp</span>, <span style="color: #A90D91">NULL</span>);
+
+ ...
+}
+</pre></div>
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+ <h2 id="os_cputime_timer_relative"><font color="F2853F" style="font-size:24pt">os_cputime_timer_relative</font></h2>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">void</span> <span style="color: #000000">os_cputime_timer_relative</span>(<span style="color: #A90D91">struct</span> <span style="color: #000000">hal_timer</span> <span style="color: #000000">*timer</span>, <span style="color: #A90D91">uint32_t</span> <span style="color: #000000">usecs</span>)
+</pre></div>
+
+
+<p>Sets a timer to expire in the specified number of microseconds from the current time. The callback function for the timer is called when the timer expires. </p>
+<h4 id="arguments">Arguments</h4>
+<table>
+<thead>
+<tr>
+<th>Arguments</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>timer</code></td>
+<td>Pointer to an initialized hal_timer.</td>
+</tr>
+<tr>
+<td><code>usecs</code></td>
+<td>The number of microseconds to set the timer to expire from now.</td>
+</tr>
+</tbody>
+</table>
+<h4 id="returned-values">Returned values</h4>
+<p>N/A</p>
+<h4 id="notes">Notes</h4>
+<p><code>timer</code> must be initialized using the <code>os_cputime_timer_init()</code> function before setting up a timer. </p>
+<h4 id="example">Example</h4>
+<p>`</p>
+<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">struct</span> <span style="color: #000000">hal_timer</span> <span style="color: #000000">mytimer</span>;
+ ...
+
+<span style="color: #000000">os_cputime_timer_relative</span>(<span style="color: #000000">&mytimer</span>, <span style="color: #1C01CE">100</span>);
+</pre></div>
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