| |
| |
| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8"> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| |
| |
| |
| |
| <title>UART — Apache Mynewt latest documentation</title> |
| |
| |
| |
| |
| <link rel="shortcut icon" href="../../../../_static/mynewt-logo-only-newt32x32.png"/> |
| |
| |
| |
| |
| <link rel="stylesheet" href="../../../../_static/css/theme.css" type="text/css" /> |
| |
| |
| <link rel="stylesheet" href="../../../../_static/css/sphinx_theme.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../../_static/css/bootstrap-3.0.3.min.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../../_static/css/v2.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../../_static/css/custom.css" type="text/css" /> |
| |
| <link rel="stylesheet" href="../../../../_static/css/restructuredtext.css" type="text/css" /> |
| |
| |
| |
| |
| <link rel="stylesheet" href="../../../../_static/css/overrides.css" type="text/css" /> |
| <link rel="index" title="Index" |
| href="../../../../genindex.html"/> |
| <link rel="search" title="Search" href="../../../../search.html"/> |
| <link rel="top" title="Apache Mynewt latest documentation" href="../../../../index.html"/> |
| <link rel="up" title="Hardware Abstraction Layer" href="../hal.html"/> |
| <link rel="next" title="SPI" href="../hal_spi/hal_spi.html"/> |
| <link rel="prev" title="GPIO" href="../hal_gpio/hal_gpio.html"/> |
| |
| |
| <script src="../../../../_static/js/modernizr.min.js"></script> |
| |
| |
| <script> |
| (function(i, s, o, g, r, a, m) { |
| i["GoogleAnalyticsObject"] = r; |
| (i[r] = |
| i[r] || |
| function() { |
| (i[r].q = i[r].q || []).push(arguments); |
| }), |
| (i[r].l = 1 * new Date()); |
| (a = s.createElement(o)), (m = s.getElementsByTagName(o)[0]); |
| a.async = 1; |
| a.src = g; |
| m.parentNode.insertBefore(a, m); |
| })(window, document, "script", "//www.google-analytics.com/analytics.js", "ga"); |
| |
| ga("create", "UA-72162311-1", "auto"); |
| ga("send", "pageview"); |
| </script> |
| |
| |
| </head> |
| |
| <body class="not-front page-documentation" role="document" > |
| <div id="wrapper"> |
| <div class="container"> |
| <div id="banner" class="row v2-main-banner"> |
| <a class="logo-cell" href="/"> |
| <img class="logo" src="../../../../_static/img/logo.png"> |
| </a> |
| <div class="tagline-cell"> |
| <h4 class="tagline">An OS to build, deploy and securely manage billions of devices</h4> |
| </div> |
| <div class="news-cell"> |
| <div class="well"> |
| <h4>Latest News:</h4> <a href="/download">Apache Mynewt 1.11.0, Apache NimBLE 1.6.0 </a> released September 7, 2023) |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| <header> |
| <nav id="navbar" class="navbar navbar-inverse" role="navigation"> |
| <div class="container"> |
| <!-- Collapsed navigation --> |
| <div class="navbar-header"> |
| <!-- Expander button --> |
| <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> |
| <span class="sr-only">Toggle navigation</span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| </button> |
| |
| </div> |
| |
| <!-- Expanded navigation --> |
| <div class="navbar-collapse collapse"> |
| <!-- Main navigation --> |
| <ul class="nav navbar-nav navbar-right"> |
| <li> |
| <a href="/"><i class="fa fa-home" style="font-size: larger;"></i></a> |
| </li> |
| <li class="important"> |
| <a href="/quick-start/">Quick Start</a> |
| </li> |
| <li> |
| <a href="/about/">About</a> |
| </li> |
| <li> |
| <a href="/talks/">Talks</a> |
| </li> |
| <li class="active"> |
| <a href="/documentation/">Documentation</a> |
| </li> |
| <li> |
| <a href="/download/">Download</a> |
| </li> |
| <li> |
| <a href="/community/">Community</a> |
| </li> |
| <li> |
| <a href="/events/">Events</a> |
| </li> |
| </ul> |
| |
| <!-- Search, Navigation and Repo links --> |
| <ul class="nav navbar-nav navbar-right"> |
| |
| </ul> |
| </div> |
| </div> |
| </nav> |
| </header> |
| <!-- STARTS MAIN CONTENT --> |
| <div id="main-content"> |
| |
| |
| |
| |
| |
| |
| <div id="breadcrumb"> |
| <div class="container"> |
| <a href="/documentation/">Docs</a> / |
| |
| <a href="../../../os_user_guide.html">OS User Guide</a> / |
| |
| <a href="../hal.html">Hardware Abstraction Layer</a> / |
| |
| UART |
| |
| <div class="sourcelink"> |
| <a href="https://github.com/apache/mynewt-core/edit/master/docs/os/modules/hal/hal_uart/hal_uart.rst" class="icon icon-github" |
| rel="nofollow"> Edit on GitHub</a> |
| </div> |
| </div> |
| </div> |
| <!-- STARTS CONTAINER --> |
| <div class="container"> |
| <!-- STARTS .content --> |
| <div id="content" class="row"> |
| |
| <!-- STARTS .container-sidebar --> |
| <div class="container-sidebar col-xs-12 col-sm-3"> |
| <div id="docSidebar" class="sticky-container"> |
| <div role="search" class="sphinx-search"> |
| <form id="rtd-search-form" class="wy-form" action="../../../../search.html" method="get"> |
| <input type="text" name="q" placeholder="Search documentation" class="search-documentation" /> |
| <input type="hidden" name="check_keywords" value="yes" /> |
| <input type="hidden" name="area" value="default" /> |
| </form> |
| </div> |
| <!-- Note: only works when deployed --> |
| <select class="form-control" onchange="if (this.value) window.location.href=this.value"> |
| <option value="/latest" selected> |
| Version: latest |
| </option> |
| <option value="/v1_11_0" > |
| Version: 1.11.0 |
| </option> |
| <option value="/v1_10_0" > |
| Version: 1.10.0 |
| </option> |
| <option value="/v1_9_0" > |
| Version: 1.9.0 |
| </option> |
| <option value="/v1_8_0" > |
| Version: 1.8.0 |
| </option> |
| <option value="/v1_7_0" > |
| Version: 1.7.0 |
| </option> |
| <option value="/v1_6_0" > |
| Version: 1.6.0 |
| </option> |
| <option value="/v1_5_0" selected="selected" > |
| Version: 1.5.0 |
| </option> |
| <option value="/v1_4_0" > |
| Version: 1.4.0 |
| </option> |
| <option value="/v1_3_0/os/introduction" > |
| Version: 1.3.0 |
| </option> |
| <option value="/v1_2_0/os/introduction" > |
| Version: 1.2.0 |
| </option> |
| <option value="/v1_1_0/os/introduction" > |
| Version: 1.1.0 |
| </option> |
| <option value="/v1_0_0/os/introduction" > |
| Version: 1.0.0 |
| </option> |
| <option value="/v0_9_0/os/introduction" > |
| Version: 0.9.0 |
| </option> |
| </select> |
| <div class="region region-sidebar"> |
| <div class="docs-menu"> |
| |
| |
| |
| <ul class="current"> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../index.html">Introduction</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../get_started/index.html">Setup & Get Started</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../concepts.html">Concepts</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../tutorials/tutorials.html">Tutorials</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../external_links.html">Third-party Resources</a></li> |
| <li class="toctree-l1 current"><a class="reference internal" href="../../../os_user_guide.html">OS User Guide</a><ul class="current"> |
| <li class="toctree-l2"><a class="reference internal" href="../../../core_os/mynewt_os.html">Kernel</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../system_modules.html">System</a></li> |
| <li class="toctree-l2 current"><a class="reference internal" href="../hal.html">Hardware Abstraction</a><ul class="current"> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_timer/hal_timer.html">Timer</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_gpio/hal_gpio.html">GPIO</a></li> |
| <li class="toctree-l3 current"><a class="current reference internal" href="#">UART</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_spi/hal_spi.html">SPI</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_i2c/hal_i2c.html">I2C</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_flash/hal_flash.html">Flash</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_watchdog/hal_watchdog.html">Watchdog</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../hal_bsp/hal_bsp.html">BSP</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l2"><a class="reference internal" href="../../bootloader/bootloader.html">Secure Bootloader</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../split/split.html">Split Images</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../../core_os/porting/port_os.html">Porting Guide</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../baselibc.html">Baselibc</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../drivers/driver.html">Drivers</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../devmgmt/newtmgr.html">Device Management with Newt Manager</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../imgmgr/imgmgr.html">Image Manager</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../sysinitconfig/sysinitconfig.html">Compile-Time Configuration</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../fs/fs.html">File System</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../fcb/fcb.html">Flash Circular Buffer</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../sensor_framework/sensor_framework.html">Sensor Framework</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../testutil/testutil.html">Test Utilities</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../json/json.html">JSON</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../network/index.html">BLE User Guide</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../newt/index.html">Newt Tool Guide</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../newtmgr/index.html">Newt Manager Guide</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../mynewt_faq/index.html">Mynewt FAQ</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../../misc/index.html">Appendix</a></li> |
| </ul> |
| |
| |
| |
| </div> |
| </div> |
| </div> |
| <!-- ENDS STICKY CONTAINER --> |
| </div> |
| <!-- ENDS .container-sidebar --> |
| |
| <div class="col-xs-12 col-sm-9"> |
| |
| <div class="alert alert-warning"> |
| <p> |
| Version 1.5.0 is not the most recent version of the |
| Apache Mynewt documentation. Click <a href="/latest">here</a> to |
| read the latest version. |
| </p> |
| </div> |
| |
| |
| |
| <div class=""> |
| <div class="rst-content"> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div itemprop="articleBody"> |
| |
| <div class="section" id="uart"> |
| <h1>UART<a class="headerlink" href="#uart" title="Permalink to this headline">¶</a></h1> |
| <p>The hardware independent UART interface for Mynewt.</p> |
| <div class="section" id="description"> |
| <h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2> |
| <p>Contains the basic operations to send and receive data over a UART |
| (Universal Asynchronous Receiver Transmitter). It also includes the API |
| to apply settings such as speed, parity etc. to the UART. The UART port |
| should be closed before any reconfiguring.</p> |
| </div> |
| <div class="section" id="examples"> |
| <h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2> |
| <p>This example shows a user writing a character to the uart in blocking |
| mode where the UART has to block until character has been sent.</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">/* write to the console with blocking */</span> |
| <span class="go">{</span> |
| <span class="go"> char *str = "Hello World!";</span> |
| <span class="go"> char *ptr = str;</span> |
| |
| <span class="go"> while(*ptr) {</span> |
| <span class="go"> hal_uart_blocking_tx(MY_UART, *ptr++);</span> |
| <span class="go"> }</span> |
| <span class="go"> hal_uart_blocking_tx(MY_UART, '\n');</span> |
| <span class="go">}</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="api"> |
| <h2>API<a class="headerlink" href="#api" title="Permalink to this headline">¶</a></h2> |
| <dl class="c enum"> |
| <dt id="c.hal_uart_parity"> |
| <span class="target" id="group___h_a_l_uart_1ga54a2cb674e61c87d0659a9ee68b79046"></span><em class="property"><span class="pre">enum</span> </em><code class="sig-name descname"><span class="pre">hal_uart_parity</span></code><a class="headerlink" href="#c.hal_uart_parity" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p><em>Values:</em></p> |
| <dl class="c enumerator"> |
| <dt id="c.hal_uart_parity.HAL_UART_PARITY_NONE"> |
| <span class="target" id="group___h_a_l_uart_1gga54a2cb674e61c87d0659a9ee68b79046a04bc6026ce33740e3290bf2489a1ab66"></span><em class="property"><span class="pre">enumerator</span> </em><code class="sig-name descname"><span class="pre">HAL_UART_PARITY_NONE</span></code><a class="headerlink" href="#c.hal_uart_parity.HAL_UART_PARITY_NONE" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>No Parity. </p> |
| </dd></dl> |
| |
| <dl class="c enumerator"> |
| <dt id="c.hal_uart_parity.HAL_UART_PARITY_ODD"> |
| <span class="target" id="group___h_a_l_uart_1gga54a2cb674e61c87d0659a9ee68b79046a1ad3c3f7814a00e6b5bf06dbd5c03923"></span><em class="property"><span class="pre">enumerator</span> </em><code class="sig-name descname"><span class="pre">HAL_UART_PARITY_ODD</span></code><a class="headerlink" href="#c.hal_uart_parity.HAL_UART_PARITY_ODD" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Odd parity. </p> |
| </dd></dl> |
| |
| <dl class="c enumerator"> |
| <dt id="c.hal_uart_parity.HAL_UART_PARITY_EVEN"> |
| <span class="target" id="group___h_a_l_uart_1gga54a2cb674e61c87d0659a9ee68b79046afe68bdf645970e0e83dca876087fa973"></span><em class="property"><span class="pre">enumerator</span> </em><code class="sig-name descname"><span class="pre">HAL_UART_PARITY_EVEN</span></code><a class="headerlink" href="#c.hal_uart_parity.HAL_UART_PARITY_EVEN" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Even parity. </p> |
| </dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="c enum"> |
| <dt id="c.hal_uart_flow_ctl"> |
| <span class="target" id="group___h_a_l_uart_1ga5aa2065acd6fab6c562b3e7f11799dd3"></span><em class="property"><span class="pre">enum</span> </em><code class="sig-name descname"><span class="pre">hal_uart_flow_ctl</span></code><a class="headerlink" href="#c.hal_uart_flow_ctl" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p><em>Values:</em></p> |
| <dl class="c enumerator"> |
| <dt id="c.hal_uart_flow_ctl.HAL_UART_FLOW_CTL_NONE"> |
| <span class="target" id="group___h_a_l_uart_1gga5aa2065acd6fab6c562b3e7f11799dd3a602a86e509c8edc7a400d47a7f19046f"></span><em class="property"><span class="pre">enumerator</span> </em><code class="sig-name descname"><span class="pre">HAL_UART_FLOW_CTL_NONE</span></code><a class="headerlink" href="#c.hal_uart_flow_ctl.HAL_UART_FLOW_CTL_NONE" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>No Flow Control. </p> |
| </dd></dl> |
| |
| <dl class="c enumerator"> |
| <dt id="c.hal_uart_flow_ctl.HAL_UART_FLOW_CTL_RTS_CTS"> |
| <span class="target" id="group___h_a_l_uart_1gga5aa2065acd6fab6c562b3e7f11799dd3aefef8f1847e02b9b414f26061bb29443"></span><em class="property"><span class="pre">enumerator</span> </em><code class="sig-name descname"><span class="pre">HAL_UART_FLOW_CTL_RTS_CTS</span></code><a class="headerlink" href="#c.hal_uart_flow_ctl.HAL_UART_FLOW_CTL_RTS_CTS" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>RTS/CTS. </p> |
| </dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="c type"> |
| <dt id="c.hal_uart_tx_char"> |
| <span class="target" id="group___h_a_l_uart_1ga048e6274132ffda2c1ba3fa97a967550"></span><em class="property"><span class="pre">typedef</span> </em><span class="pre">int</span> <span class="pre">(</span><span class="pre">*</span><code class="sig-name descname"><span class="pre">hal_uart_tx_char</span></code><span class="pre">)</span><span class="sig-paren">(</span><span class="pre">void</span> <span class="pre">*</span><span class="pre">arg</span><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_tx_char" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Function prototype for UART driver to ask for more data to send. </p> |
| <p>Returns -1 if no more data is available for TX. Driver must call this with interrupts disabled. </p> |
| </dd></dl> |
| |
| <dl class="c type"> |
| <dt id="c.hal_uart_tx_done"> |
| <span class="target" id="group___h_a_l_uart_1ga465fd0514a4a013c4719edbecf7fad79"></span><em class="property"><span class="pre">typedef</span> </em><span class="pre">void</span> <span class="pre">(</span><span class="pre">*</span><code class="sig-name descname"><span class="pre">hal_uart_tx_done</span></code><span class="pre">)</span><span class="sig-paren">(</span><span class="pre">void</span> <span class="pre">*</span><span class="pre">arg</span><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_tx_done" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Function prototype for UART driver to report that transmission is complete. </p> |
| <p>This should be called when transmission of last byte is finished. Driver must call this with interrupts disabled. </p> |
| </dd></dl> |
| |
| <dl class="c type"> |
| <dt id="c.hal_uart_rx_char"> |
| <span class="target" id="group___h_a_l_uart_1ga584da9fb7bd0c337f05b45ec958cf3e9"></span><em class="property"><span class="pre">typedef</span> </em><span class="pre">int</span> <span class="pre">(</span><span class="pre">*</span><code class="sig-name descname"><span class="pre">hal_uart_rx_char</span></code><span class="pre">)</span><span class="sig-paren">(</span><span class="pre">void</span> <span class="pre">*</span><span class="pre">arg</span>, <span class="pre">uint8_t</span> <span class="pre">byte</span><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_rx_char" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Function prototype for UART driver to report incoming byte of data. </p> |
| <p>Returns -1 if data was dropped. Driver must call this with interrupts disabled. </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_init_cbs"> |
| <span class="target" id="group___h_a_l_uart_1gaed951e1b190b127ea41f7a0081c2fc91"></span><span class="pre">int</span> <code class="sig-name descname"><span class="pre">hal_uart_init_cbs</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em>, <a class="reference internal" href="#c.hal_uart_tx_char" title="hal_uart_tx_char"><span class="pre">hal_uart_tx_char</span></a> <em><span class="pre">tx_func</span></em>, <a class="reference internal" href="#c.hal_uart_tx_done" title="hal_uart_tx_done"><span class="pre">hal_uart_tx_done</span></a> <em><span class="pre">tx_done</span></em>, <a class="reference internal" href="#c.hal_uart_rx_char" title="hal_uart_rx_char"><span class="pre">hal_uart_rx_char</span></a> <em><span class="pre">rx_func</span></em>, <span class="pre">void</span> <span class="pre">*</span><em><span class="pre">arg</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_init_cbs" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Initializes given uart. </p> |
| <p>Mapping of logical UART number to physical UART/GPIO pins is in BSP. </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_init"> |
| <span class="target" id="group___h_a_l_uart_1ga1c1c1fe6f1a391601028864ecbf82dad"></span><span class="pre">int</span> <code class="sig-name descname"><span class="pre">hal_uart_init</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em>, <span class="pre">void</span> <span class="pre">*</span><em><span class="pre">cfg</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_init" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Initialize the HAL uart. </p> |
| <p><dl class="simple"> |
| <dt><strong>Return</strong></dt><dd><p>0 on success, non-zero error code on failure </p> |
| </dd> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">uart</span></code>: The uart number to configure </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">cfg</span></code>: Hardware specific uart configuration. This is passed from BSP directly to the MCU specific driver.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_config"> |
| <span class="target" id="group___h_a_l_uart_1ga26356de3e25529e34b2f13a400476839"></span><span class="pre">int</span> <code class="sig-name descname"><span class="pre">hal_uart_config</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em>, <span class="pre">int32_t</span> <em><span class="pre">speed</span></em>, <span class="pre">uint8_t</span> <em><span class="pre">databits</span></em>, <span class="pre">uint8_t</span> <em><span class="pre">stopbits</span></em>, <em class="property"><span class="pre">enum</span></em> <a class="reference internal" href="#c.hal_uart_parity" title="hal_uart_parity"><span class="pre">hal_uart_parity</span></a> <em><span class="pre">parity</span></em>, <em class="property"><span class="pre">enum</span></em> <a class="reference internal" href="#c.hal_uart_flow_ctl" title="hal_uart_flow_ctl"><span class="pre">hal_uart_flow_ctl</span></a> <em><span class="pre">flow_ctl</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_config" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Applies given configuration to UART. </p> |
| <p><dl class="simple"> |
| <dt><strong>Return</strong></dt><dd><p>0 on success, non-zero error code on failure </p> |
| </dd> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">uart</span></code>: The UART number to configure </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">speed</span></code>: The baudrate in bps to configure </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">databits</span></code>: The number of databits to send per byte </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">stopbits</span></code>: The number of stop bits to send </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">parity</span></code>: The UART parity </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">flow_ctl</span></code>: Flow control settings on the UART</p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_close"> |
| <span class="target" id="group___h_a_l_uart_1ga809e353287e60b88ed9d6e87bd96d4af"></span><span class="pre">int</span> <code class="sig-name descname"><span class="pre">hal_uart_close</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_close" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Close UART port. </p> |
| <p>Can call <a class="reference internal" href="#group___h_a_l_uart_1ga26356de3e25529e34b2f13a400476839"><span class="std std-ref">hal_uart_config()</span></a> with different settings after calling this.</p> |
| <p><dl class="simple"> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">uart</span></code>: The UART number to close </p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_start_tx"> |
| <span class="target" id="group___h_a_l_uart_1gad30876672c3a563654b2fa8d5030e418"></span><span class="pre">void</span> <code class="sig-name descname"><span class="pre">hal_uart_start_tx</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_start_tx" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>More data queued for transmission. </p> |
| <p>UART driver will start asking for that data.</p> |
| <p><dl class="simple"> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">uart</span></code>: The UART number to start TX on </p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_start_rx"> |
| <span class="target" id="group___h_a_l_uart_1ga758ae010736ef0fb2cfcc096ab22a707"></span><span class="pre">void</span> <code class="sig-name descname"><span class="pre">hal_uart_start_rx</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_start_rx" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Upper layers have consumed some data, and are now ready to receive more. </p> |
| <p>This is meaningful after uart_rx_char callback has returned -1 telling that no more data can be accepted.</p> |
| <p><dl class="simple"> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">uart</span></code>: The UART number to begin RX on </p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.hal_uart_blocking_tx"> |
| <span class="target" id="group___h_a_l_uart_1ga5b2feb681598e2151481e24f8115f913"></span><span class="pre">void</span> <code class="sig-name descname"><span class="pre">hal_uart_blocking_tx</span></code><span class="sig-paren">(</span><span class="pre">int</span> <em><span class="pre">uart</span></em>, <span class="pre">uint8_t</span> <em><span class="pre">byte</span></em><span class="sig-paren">)</span><a class="headerlink" href="#c.hal_uart_blocking_tx" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>This is type of write where UART has to block until character has been sent. </p> |
| <p>Used when printing diag output from system crash. Must be called with interrupts disabled.</p> |
| <p><dl class="simple"> |
| <dt><strong>Parameters</strong></dt><dd><ul class="breatheparameterlist simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">uart</span></code>: The UART number to TX on </p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">byte</span></code>: The byte to TX on the UART </p></li> |
| </ul> |
| </dd> |
| </dl> |
| </p> |
| </dd></dl> |
| |
| </div> |
| </div> |
| |
| |
| </div> |
| </div> |
| |
| <div class="rst-footer-buttons row" role="navigation" aria-label="footer navigation"> |
| |
| <a href="../hal_spi/hal_spi.html" class="btn btn-neutral float-right" title="SPI" accesskey="n">Next: SPI <span class="fa fa-arrow-circle-right"></span></a> |
| |
| |
| <a href="../hal_gpio/hal_gpio.html" class="btn btn-neutral" title="GPIO" accesskey="p"><span class="fa fa-arrow-circle-left"></span> Previous: GPIO</a> |
| |
| </div> |
| |
| </div> |
| </div> |
| </div> |
| <!-- ENDS CONTENT SECTION --> |
| </div> |
| <!-- ENDS .content --> |
| </div> |
| </div> |
| <footer> |
| <div class="container"> |
| <div class="row"> |
| <div class="col-xs-12"> |
| |
| <p class="copyright">Apache Mynewt is available under Apache License, version 2.0.</p> |
| |
| </div> |
| <div class="col-xs-12"> |
| <div class="logos"> |
| <img src="../../../../_static/img/asf_logo_wide_small.png" alt="Apache" title="Apache"> |
| <small class="footnote"> |
| Apache Mynewt, Mynewt, Apache, the Apache feather logo, and the Apache Mynewt project logo are either |
| registered trademarks or trademarks of the Apache Software Foundation in the United States and other countries. |
| </small> |
| <a href=""> |
| <img src="../../../../_static/img/add_to_slack.png" alt="Slack Icon" title="Join our Slack Community" /> |
| </a> |
| </div> |
| </div> |
| </div> |
| </div> |
| </footer> |
| </div> |
| <!-- ENDS #wrapper --> |
| |
| |
| |
| <script type="text/javascript"> |
| var DOCUMENTATION_OPTIONS = { |
| URL_ROOT:'../../../../', |
| VERSION:'latest', |
| COLLAPSE_INDEX:false, |
| FILE_SUFFIX:'.html', |
| HAS_SOURCE: true, |
| SOURCELINK_SUFFIX: '.txt', |
| LINK_SUFFIX: '.html' |
| }; |
| </script> |
| <script type="text/javascript" src="../../../../_static/jquery.js"></script> |
| <script type="text/javascript" src="../../../../_static/underscore.js"></script> |
| <script type="text/javascript" src="../../../../_static/doctools.js"></script> |
| <script type="text/javascript" src="../../../../_static/js/bootstrap-3.0.3.min.js"></script> |
| <script type="text/javascript" src="../../../../_static/js/affix.js"></script> |
| <script type="text/javascript" src="../../../../_static/js/main.js"></script> |
| |
| |
| |
| </body> |
| </html> |