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<p>Driver for the Advanced Peripheral Bus (APB) UART from the Cortex-M System Design Kit (CMSDK).
<a href="#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="uart__apb_8h_source.html">uart_apb.h</a>&gt;</code></p>
<div id="dynsection-0" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Inheritance diagram for L4::Uart_apb:</div>
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<div id="dynsection-1" onclick="return dynsection.toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;"><span class="dynarrow"><span class="arrowhead closed"></span></span>Collaboration diagram for L4::Uart_apb:</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-pub-methods" class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a9abdedd1c9f64891bd8aefd69c17124a" id="r_a9abdedd1c9f64891bd8aefd69c17124a"><td class="memItemLeft" align="right" valign="top"><a id="a9abdedd1c9f64891bd8aefd69c17124a" name="a9abdedd1c9f64891bd8aefd69c17124a"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>Uart_apb</b> (unsigned freq)</td></tr>
<tr class="memdesc:a9abdedd1c9f64891bd8aefd69c17124a"><td class="mdescLeft">&#160;</td><td class="mdescRight">freq == 0 means unknown and don't change baud rate <br /></td></tr>
<tr class="memitem:a6477cf1e4ce03615dffad08b8bed0dfd" id="r_a6477cf1e4ce03615dffad08b8bed0dfd"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a6477cf1e4ce03615dffad08b8bed0dfd">startup</a> (Io_register_block const *) override</td></tr>
<tr class="memdesc:a6477cf1e4ce03615dffad08b8bed0dfd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Start the UART driver. <br /></td></tr>
<tr class="memitem:afaf1d13288de75b9f19ac946f86006cc" id="r_afaf1d13288de75b9f19ac946f86006cc"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#afaf1d13288de75b9f19ac946f86006cc">shutdown</a> () override</td></tr>
<tr class="memdesc:afaf1d13288de75b9f19ac946f86006cc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Terminate the UART driver. <br /></td></tr>
<tr class="memitem:aea2ca3bc001d527837f5af2f63ba9d21" id="r_aea2ca3bc001d527837f5af2f63ba9d21"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aea2ca3bc001d527837f5af2f63ba9d21">change_mode</a> (Transfer_mode m, Baud_rate r) override</td></tr>
<tr class="memdesc:aea2ca3bc001d527837f5af2f63ba9d21"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set certain parameters of the UART. <br /></td></tr>
<tr class="memitem:ab57dc1ee3bf83e3bd1754d815280e9e4" id="r_ab57dc1ee3bf83e3bd1754d815280e9e4"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ab57dc1ee3bf83e3bd1754d815280e9e4">write</a> (char const *s, unsigned long count, bool blocking=true) const override</td></tr>
<tr class="memdesc:ab57dc1ee3bf83e3bd1754d815280e9e4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Transmit a number of characters. <br /></td></tr>
<tr class="memitem:a5060273730b9d4a27a9432e3225f3077" id="r_a5060273730b9d4a27a9432e3225f3077"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a5060273730b9d4a27a9432e3225f3077">enable_rx_irq</a> (bool enable) override</td></tr>
<tr class="memdesc:a5060273730b9d4a27a9432e3225f3077"><td class="mdescLeft">&#160;</td><td class="mdescRight">Enable the receive IRQ. <br /></td></tr>
<tr class="memitem:aa61b08fb092349740c445c05a0837402" id="r_aa61b08fb092349740c445c05a0837402"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#aa61b08fb092349740c445c05a0837402">char_avail</a> () const override</td></tr>
<tr class="memdesc:aa61b08fb092349740c445c05a0837402"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check if there is at least one character available for reading from the UART. <br /></td></tr>
<tr class="memitem:a906c9426f0e5b16fc1f196f376bd2236" id="r_a906c9426f0e5b16fc1f196f376bd2236"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a906c9426f0e5b16fc1f196f376bd2236">get_char</a> (bool blocking=true) const override</td></tr>
<tr class="memdesc:a906c9426f0e5b16fc1f196f376bd2236"><td class="mdescLeft">&#160;</td><td class="mdescRight">Read a character from the UART. <br /></td></tr>
<tr class="inherit_header pub_methods_classL4_1_1Uart"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pub_methods_classL4_1_1Uart')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Public Member Functions inherited from <a class="el" href="classL4_1_1Uart.html">L4::Uart</a></td></tr>
<tr class="memitem:afb3b03d44d8f32d5d90d01bba89c0760 inherit pub_methods_classL4_1_1Uart" id="r_afb3b03d44d8f32d5d90d01bba89c0760"><td class="memItemLeft" align="right" valign="top">Transfer_mode&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Uart.html#afb3b03d44d8f32d5d90d01bba89c0760">mode</a> () const</td></tr>
<tr class="memdesc:afb3b03d44d8f32d5d90d01bba89c0760 inherit pub_methods_classL4_1_1Uart"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the transfer mode. <br /></td></tr>
<tr class="memitem:a86a4f246ca4c5f0ef1d4720d27bfd52c inherit pub_methods_classL4_1_1Uart" id="r_a86a4f246ca4c5f0ef1d4720d27bfd52c"><td class="memItemLeft" align="right" valign="top">Baud_rate&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Uart.html#a86a4f246ca4c5f0ef1d4720d27bfd52c">rate</a> () const</td></tr>
<tr class="memdesc:a86a4f246ca4c5f0ef1d4720d27bfd52c inherit pub_methods_classL4_1_1Uart"><td class="mdescLeft">&#160;</td><td class="mdescRight">Return the baud rate. <br /></td></tr>
<tr class="memitem:a0f7c45243d84a69dcb4e58c80fc34491 inherit pub_methods_classL4_1_1Uart" id="r_a0f7c45243d84a69dcb4e58c80fc34491"><td class="memItemLeft" align="right" valign="top">
virtual void&#160;</td><td class="memItemRight" valign="bottom"><b>irq_ack</b> ()</td></tr>
<tr class="memdesc:a0f7c45243d84a69dcb4e58c80fc34491 inherit pub_methods_classL4_1_1Uart"><td class="mdescLeft">&#160;</td><td class="mdescRight">Acknowledge a received interrupt. <br /></td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 id="header-inherited" class="groupheader"><a id="inherited" name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pro_methods_classL4_1_1Uart"><td colspan="2" onclick="javascript:dynsection.toggleInherit('pro_methods_classL4_1_1Uart')"><span class="dynarrow"><span class="arrowhead closed"></span></span>Protected Member Functions inherited from <a class="el" href="classL4_1_1Uart.html">L4::Uart</a></td></tr>
<tr class="memitem:a1cef9f55c568d5197d1b676e34c4bfd2 inherit pro_methods_classL4_1_1Uart" id="r_a1cef9f55c568d5197d1b676e34c4bfd2"><td class="memTemplParams" colspan="2">template&lt;typename Uart_driver, bool Timeout_guard = true&gt; </td></tr>
<tr class="memitem:a1cef9f55c568d5197d1b676e34c4bfd2 inherit pro_methods_classL4_1_1Uart template"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classL4_1_1Uart.html#a1cef9f55c568d5197d1b676e34c4bfd2">generic_write</a> (char const *s, unsigned long count, bool blocking=true) const</td></tr>
<tr class="memdesc:a1cef9f55c568d5197d1b676e34c4bfd2 inherit pro_methods_classL4_1_1Uart"><td class="mdescLeft">&#160;</td><td class="mdescRight">Internal function transmitting each character one-after-another and finally waiting that the transmission did actually finish. <br /></td></tr>
</table>
<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Driver for the Advanced Peripheral Bus (APB) UART from the Cortex-M System Design Kit (CMSDK). </p>
<p class="definition">Definition at line <a class="el" href="uart__apb_8h_source.html#l00017">17</a> of file <a class="el" href="uart__apb_8h_source.html">uart_apb.h</a>.</p>
</div><a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Member Function Documentation</h2>
<a id="aea2ca3bc001d527837f5af2f63ba9d21" name="aea2ca3bc001d527837f5af2f63ba9d21"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aea2ca3bc001d527837f5af2f63ba9d21">&#9670;&#160;</a></span>change_mode()</h2>
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<td class="memname">bool L4::Uart_apb::change_mode </td>
<td>(</td>
<td class="paramtype">Transfer_mode</td> <td class="paramname"><span class="paramname"><em>m</em></span>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">Baud_rate</td> <td class="paramname"><span class="paramname"><em>r</em></span>&#160;)</td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Set certain parameters of the UART. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">m</td><td>UART mode. Depends on the hardware. </td></tr>
<tr><td class="paramname">r</td><td>Baud rate. </td></tr>
</table>
</dd>
</dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">true</td><td>Mode setting succeeded (or was not performed at all). </td></tr>
<tr><td class="paramname">false</td><td>Mode setting failed for some reason.</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>Some drivers don't perform any mode setting at all and just return true. </dd></dl>
<p>Implements <a class="el" href="classL4_1_1Uart.html#ac70a395c14b85b77b9d824c54e005bdb">L4::Uart</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa61b08fb092349740c445c05a0837402">&#9670;&#160;</a></span>char_avail()</h2>
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<td class="memname">int L4::Uart_apb::char_avail </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td> const</td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Check if there is at least one character available for reading from the UART. </p>
<dl class="section return"><dt>Returns</dt><dd>0 if there is no character available for reading, !=0 otherwise. </dd></dl>
<p>Implements <a class="el" href="classL4_1_1Uart.html#aa44d60597fcc30a084bd4491075210c6">L4::Uart</a>.</p>
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</div>
<a id="a5060273730b9d4a27a9432e3225f3077" name="a5060273730b9d4a27a9432e3225f3077"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5060273730b9d4a27a9432e3225f3077">&#9670;&#160;</a></span>enable_rx_irq()</h2>
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<td class="memname">bool L4::Uart_apb::enable_rx_irq </td>
<td>(</td>
<td class="paramtype">bool</td> <td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Enable the receive IRQ. </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">true</td><td>The RX IRQ was successfully enabled / disabled. </td></tr>
<tr><td class="paramname">false</td><td>The RX IRQ couldn't be enabled / disabled. The driver does not support this operation. </td></tr>
</table>
</dd>
</dl>
<p>Reimplemented from <a class="el" href="classL4_1_1Uart.html#af141560f01c73565fcaa38bda79105b7">L4::Uart</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a906c9426f0e5b16fc1f196f376bd2236">&#9670;&#160;</a></span>get_char()</h2>
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<td class="memname">int L4::Uart_apb::get_char </td>
<td>(</td>
<td class="paramtype">bool</td> <td class="paramname"><span class="paramname"><em>blocking</em></span><span class="paramdefsep"> = </span><span class="paramdefval">true</span></td><td>)</td>
<td> const</td>
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</td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Read a character from the UART. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">blocking</td><td>If true, wait until a character is available for reading. Otherwise do not wait and just return -1 if no character is available. </td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The actual character read from the UART. </dd></dl>
<p>Implements <a class="el" href="classL4_1_1Uart.html#af213c9429844ea7713be765513619902">L4::Uart</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#afaf1d13288de75b9f19ac946f86006cc">&#9670;&#160;</a></span>shutdown()</h2>
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<td class="memname">void L4::Uart_apb::shutdown </td>
<td>(</td>
<td class="paramname"><span class="paramname"><em></em></span></td><td>)</td>
<td></td>
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</td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Terminate the UART driver. </p>
<p>This includes disabling of interrupts. </p>
<p>Implements <a class="el" href="classL4_1_1Uart.html#a4e88a8c8695bd7903ac37a7d3f75e207">L4::Uart</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a6477cf1e4ce03615dffad08b8bed0dfd">&#9670;&#160;</a></span>startup()</h2>
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<td class="memname">bool L4::Uart_apb::startup </td>
<td>(</td>
<td class="paramtype">Io_register_block const *</td> <td class="paramname"><span class="paramname"><em>regs</em></span></td><td>)</td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Start the UART driver. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">regs</td><td>IO register block of the UART. </td></tr>
</table>
</dd>
</dl>
<dl class="retval"><dt>Return values</dt><dd>
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<tr><td class="paramname">true</td><td>Startup succeeded. </td></tr>
<tr><td class="paramname">false</td><td>Startup failed. </td></tr>
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<p>Implements <a class="el" href="classL4_1_1Uart.html#acc5eb31138d00f87b3b7944cdae93b04">L4::Uart</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab57dc1ee3bf83e3bd1754d815280e9e4">&#9670;&#160;</a></span>write()</h2>
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<td class="memname">int L4::Uart_apb::write </td>
<td>(</td>
<td class="paramtype">char const *</td> <td class="paramname"><span class="paramname"><em>s</em></span>, </td>
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<td class="paramtype">unsigned long</td> <td class="paramname"><span class="paramname"><em>count</em></span>, </td>
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<td class="paramtype">bool</td> <td class="paramname"><span class="paramname"><em>blocking</em></span><span class="paramdefsep"> = </span><span class="paramdefval">true</span>&#160;) const</td>
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<span class="mlabels"><span class="mlabel override">override</span><span class="mlabel virtual">virtual</span></span> </td>
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<p>Transmit a number of characters. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">s</td><td><a class="el" href="structBuffer.html" title="Data buffer used to transfer packets.">Buffer</a> containing the characters. </td></tr>
<tr><td class="paramname">count</td><td>Number of characters to transmit. </td></tr>
<tr><td class="paramname">blocking</td><td>If true, wait until there is space in the transmit buffer and also wait until every character was successful transmitted. Otherwise do not wait. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The number of successfully written characters. </dd></dl>
<p>Implements <a class="el" href="classL4_1_1Uart.html#a1080fa44a12850cd38c7eb851eb74f6f">L4::Uart</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>pkg/drivers-frst/uart/include/<a class="el" href="uart__apb_8h_source.html">uart_apb.h</a></li>
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