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| <div class="section" id="watchdog"> |
| <h1>Watchdog<a class="headerlink" href="#watchdog" title="Permalink to this headline">¶</a></h1> |
| <p>The hardware independent interface to enable internal hardware |
| watchdogs.</p> |
| <div class="section" id="description"> |
| <h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2> |
| <p>The <code class="docutils literal notranslate"><span class="pre">hal_watchdog_init</span></code> interface can be used to set a recurring |
| watchdog timer to fire no sooner than in ‘expire_secs’ seconds.</p> |
| <div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="kt">int</span><span class="w"> </span><span class="nf">hal_watchdog_init</span><span class="p">(</span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">expire_msecs</span><span class="p">);</span> |
| </pre></div> |
| </div> |
| <p>Watchdog needs to be then started with a call to |
| <code class="docutils literal notranslate"><span class="pre">hal_watchdog_enable()</span></code>. Watchdog should be tickled periodically with |
| a frequency smaller than ‘expire_secs’ using <code class="docutils literal notranslate"><span class="pre">hal_watchdog_tickle()</span></code>.</p> |
| </div> |
| <div class="section" id="api"> |
| <h2>API<a class="headerlink" href="#api" title="Permalink to this headline">¶</a></h2> |
| <dl class="c function"> |
| <dt id="c.hal_watchdog_init"> |
| <span class="target" id="group___h_a_l_watchdog_1ga04a1971921c70c673e3deda826dac3ae"></span><span class="pre">int</span> <code class="sig-name descname"><span class="pre">hal_watchdog_init</span></code><span class="sig-paren">(</span><span class="pre">uint32_t</span> <em><span class="pre">expire_msecs</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_watchdog_init" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Set a recurring watchdog timer to fire no sooner than in ‘expire_secs’ seconds. </p> |
| <p>Watchdog should be tickled periodically with a frequency smaller than ‘expire_secs’. Watchdog needs to be then started with a call to :c:func:<code class="docutils literal notranslate"><a class="reference internal" href="#group___h_a_l_watchdog_1gadeae985f016d5f9dbe463680b1e926b5"><span class="std std-ref"><span class="pre">hal_watchdog_enable()</span></span></a></code>.</p> |
| <p><dl class="simple"> |
| <dt><strong>Return</strong></dt><dd><p>< 0 on failure; on success return the actual expiration time as positive value </p> |
| </dd> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">expire_msecs</span></code>: Watchdog timer expiration time in msecs</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_watchdog_enable"> |
| <span class="target" id="group___h_a_l_watchdog_1gadeae985f016d5f9dbe463680b1e926b5"></span><span class="pre">void</span> <code class="sig-name descname"><span class="pre">hal_watchdog_enable</span></code><span class="sig-paren">(</span><span class="pre">void</span><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_watchdog_enable" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Starts the watchdog. </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_watchdog_tickle"> |
| <span class="target" id="group___h_a_l_watchdog_1gaa06c7ed9a1b5526d22da255878533789"></span><span class="pre">void</span> <code class="sig-name descname"><span class="pre">hal_watchdog_tickle</span></code><span class="sig-paren">(</span><span class="pre">void</span><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_watchdog_tickle" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Tickles the watchdog. </p> |
| <p>This needs to be done periodically, before the value configured in :c:func:<code class="docutils literal notranslate"><a class="reference internal" href="#group___h_a_l_watchdog_1ga04a1971921c70c673e3deda826dac3ae"><span class="std std-ref"><span class="pre">hal_watchdog_init()</span></span></a></code> expires. </p> |
| </dd></dl> |
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