| <!-- |
| Documentation/_templates/layout.html |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. The |
| ASF licenses this file to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance with the |
| License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| License for the specific language governing permissions and limitations |
| under the License. |
| --> |
| |
| |
| |
| <!DOCTYPE html> |
| <html class="writer-html5" lang="en"> |
| <head> |
| <meta charset="utf-8" /><meta name="generator" content="Docutils 0.19: https://docutils.sourceforge.io/" /> |
| |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <title>ST STM32WL5 — NuttX latest documentation</title> |
| <link rel="stylesheet" type="text/css" href="../../../_static/pygments.css" /> |
| <link rel="stylesheet" type="text/css" href="../../../_static/css/theme.css" /> |
| <link rel="stylesheet" type="text/css" href="../../../_static/copybutton.css" /> |
| <link rel="stylesheet" type="text/css" href="../../../_static/design-style.1e8bd061cd6da7fc9cf755528e8ffc24.min.css" /> |
| <link rel="stylesheet" type="text/css" href="../../../_static/custom.css" /> |
| |
| |
| <link rel="shortcut icon" href="../../../_static/favicon.ico"/> |
| <script src="../../../_static/jquery.js"></script> |
| <script src="../../../_static/_sphinx_javascript_frameworks_compat.js"></script> |
| <script data-url_root="../../../" id="documentation_options" src="../../../_static/documentation_options.js"></script> |
| <script src="../../../_static/doctools.js"></script> |
| <script src="../../../_static/sphinx_highlight.js"></script> |
| <script src="../../../_static/clipboard.min.js"></script> |
| <script src="../../../_static/copybutton.js"></script> |
| <script src="../../../_static/design-tabs.js"></script> |
| <script src="../../../_static/js/theme.js"></script> |
| <link rel="index" title="Index" href="../../../genindex.html" /> |
| <link rel="search" title="Search" href="../../../search.html" /> |
| <link rel="next" title="ST Nucleo WL55JC" href="boards/nucleo-wl55jc/index.html" /> |
| <link rel="prev" title="ST Nucleo WB55RG" href="../stm32wb/boards/nucleo-wb55rg/index.html" /> |
| </head> |
| |
| <body class="wy-body-for-nav"> |
| <div class="wy-grid-for-nav"> |
| <nav data-toggle="wy-nav-shift" class="wy-nav-side"> |
| <div class="wy-side-scroll"> |
| <div class="wy-side-nav-search" > |
| |
| <a href="../../../index.html" class="icon icon-home"> NuttX |
| |
| |
| |
| </a> |
| |
| <!-- this version selector is quite ugly, should be probably replaced by something |
| more modern --> |
| |
| <div class="version-selector"> |
| <select onchange="javascript:location.href = this.value;"> |
| |
| <option value="../../../../latest" selected="selected">latest</option> |
| |
| <option value="../../../../10.0.0" >10.0.0</option> |
| |
| <option value="../../../../10.0.1" >10.0.1</option> |
| |
| <option value="../../../../10.1.0" >10.1.0</option> |
| |
| <option value="../../../../10.2.0" >10.2.0</option> |
| |
| <option value="../../../../10.3.0" >10.3.0</option> |
| |
| <option value="../../../../11.0.0" >11.0.0</option> |
| |
| <option value="../../../../12.0.0" >12.0.0</option> |
| |
| <option value="../../../../12.1.0" >12.1.0</option> |
| |
| <option value="../../../../12.2.0" >12.2.0</option> |
| |
| <option value="../../../../12.2.1" >12.2.1</option> |
| |
| <option value="../../../../12.3.0" >12.3.0</option> |
| |
| <option value="../../../../12.4.0" >12.4.0</option> |
| |
| <option value="../../../../12.5.0" >12.5.0</option> |
| |
| <option value="../../../../12.5.1" >12.5.1</option> |
| |
| <option value="../../../../12.6.0" >12.6.0</option> |
| |
| <option value="../../../../12.7.0" >12.7.0</option> |
| |
| <option value="../../../../12.8.0" >12.8.0</option> |
| |
| <option value="../../../../12.9.0" >12.9.0</option> |
| |
| <option value="../../../../12.10.0" >12.10.0</option> |
| |
| <option value="../../../../12.11.0" >12.11.0</option> |
| |
| </select> |
| </div> |
| |
| |
| <div role="search"> |
| <form id="rtd-search-form" class="wy-form" action="../../../search.html" method="get"> |
| <input type="text" name="q" placeholder="Search docs" aria-label="Search docs" /> |
| <input type="hidden" name="check_keywords" value="yes" /> |
| <input type="hidden" name="area" value="default" /> |
| </form> |
| </div> |
| |
| </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu"> |
| <p class="caption" role="heading"><span class="caption-text">Table of Contents</span></p> |
| <ul class="current"> |
| <li class="toctree-l1"><a class="reference internal" href="../../../index.html">Home</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../introduction/index.html">Introduction</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../quickstart/index.html">Getting Started</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../contributing/index.html">Contributing</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../introduction/inviolables.html">The Inviolable Principles of NuttX</a></li> |
| <li class="toctree-l1 current"><a class="reference internal" href="../../index.html">Supported Platforms</a><ul class="current"> |
| <li class="toctree-l2 current"><a class="reference internal" href="../index.html">ARM</a><ul class="current"> |
| <li class="toctree-l3"><a class="reference internal" href="../a1x/index.html">Allwinner A10</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../am335x/index.html">TI/Sitara AM335x</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../at32/index.html">Artery AT32</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../bcm2708/index.html">Broadcom BCM2708 (removed)</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../c5471/index.html">TI TMS320-C5471</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../cxd56xx/index.html">Sony CXD56xx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../dm320/index.html">TI TMS320-DM320</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../efm32/index.html">SiLabs EFM32</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../eoss3/index.html">EOSS3</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../fvp-v8r-aarch32/index.html">FVP ARMv8-R Virt Chip</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../gd32f4/index.html">GD32F4</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../goldfish/goldfish_timer.html">GOLDFISH TIMER</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../goldfish/index.html">GOLDFISH</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../imx1/index.html">NXP/Freescale i.MX1</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../imx6/index.html">NXP/Freescale i.MX6</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../imx9/index.html">NXP i.MX9</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../imxrt/index.html">NXP i.MX RT</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../kinetis/index.html">NXP/FreeScale Kinetis</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../kl/index.html">NXP/FreeScale KLxx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lc823450/index.html">ON Semiconductor LC823450</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc17xx/index.html">NXP LPC17xx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc214x/index.html">NXP LPC214x</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc2378/index.html">NXP LPC2378</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc31xx/index.html">NXP LPC31xx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc40xx/index.html">NXP LPC40xx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc43xx/index.html">NXP LPC43xx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../lpc54xx/index.html">NXP LPC54xx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../max326xx/index.html">Maxim Integrated MAX32660</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../moxart/index.html">Moxa NP51x0</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../mps/index.html">MPS</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../nrf52/ieee802154.html">Nordic nRF52 IEEE 802.15.4</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../nrf52/index.html">Nordic nRF52</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../nrf53/index.html">Nordic nRF53</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../nrf91/index.html">Nordic nRF91</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../nuc1xx/index.html">nuvoTon NUC120</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../phy62xx/index.html">PHY+ PHY62</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../qemu/index.html">QEMU</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../ra4m1/index.html">Renesas RA4M1</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../rp2040/index.html">RaspberryPi rp2040</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../rp23xx/index.html">RaspberryPi rp2350</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../s32k1xx/index.html">NXP S32K1XX</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../s32k3xx/index.html">NXP S32K3XX</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../sam34/index.html">Microchip SAM34</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../sama5/index.html">Microchip SAMA5</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../samd2l2/index.html">Microchip SAMD2x</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../samd5e5/index.html">Microchip samd5e5</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../samv7/index.html">Microchip SAM V7</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32c0/index.html">ST STM32C0</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32f0/index.html">ST STM32F0</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32f1/index.html">ST STM32F1</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32f2/index.html">ST STM32F2</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32f3/index.html">ST STM32F3</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32f4/index.html">ST STM32F4</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32f7/index.html">ST STM32F7</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32g0/index.html">ST STM32G0</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32g4/index.html">ST STM32G4</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32h5/index.html">ST STM32H5</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32h7/index.html">ST STM32H7</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32l0/index.html">ST STM32L0</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32l1/index.html">ST STM32L1</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32l4/index.html">ST STM32L4</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32l5/index.html">ST STM32L5</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32u5/index.html">ST STM32U5</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../stm32wb/index.html">ST STM32WB</a></li> |
| <li class="toctree-l3 current"><a class="current reference internal" href="#">ST STM32WL5</a><ul> |
| <li class="toctree-l4"><a class="reference internal" href="#supported-mcus">Supported MCUs</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="#peripheral-support">Peripheral Support</a><ul> |
| <li class="toctree-l5"><a class="reference internal" href="#pll">PLL</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#lse">LSE</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#hsi">HSI</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#msi">MSI</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#hse">HSE</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#rcc">RCC</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#syscfg">SYSCFG</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#gpio">GPIO</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#uart">UART</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#ipcc">IPCC</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#exti">EXTI</a></li> |
| <li class="toctree-l5"><a class="reference internal" href="#flash">FLASH</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l4"><a class="reference internal" href="#supported-boards">Supported Boards</a><ul> |
| <li class="toctree-l5"><a class="reference internal" href="boards/nucleo-wl55jc/index.html">ST Nucleo WL55JC</a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li class="toctree-l3"><a class="reference internal" href="../str71x/index.html">ST STR71</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../tiva/index.html">TI/Stellaris Tiva</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../tms570/index.html">TI/Hercules TMS570xxx</a></li> |
| <li class="toctree-l3"><a class="reference internal" href="../xmc4/index.html">Infineon XMC4000</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l2"><a class="reference internal" href="../../arm64/index.html">ARM64</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../avr/index.html">Microchip AVR</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../ceva/index.html">CEVA</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../hc/index.html">HC</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../mips/index.html">MIPS</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../misco/index.html">Misoc</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../or1k/index.html">OpenRISC</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../renesas/index.html">Renesas</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../risc-v/index.html">RISC-V</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../sim/index.html">Simulators</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../sim/network_linux.html">Network Support on Linux</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../sim/network_vpnkit.html">Network support with VPNKit</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../sparc/index.html">SPARC</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../tricore/index.html">TriCore</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../x86/index.html">Intel 80x86</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../x86_64/index.html">Intel 80x86_64</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../xtensa/index.html">Xtensa</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../z16/index.html">Z16</a></li> |
| <li class="toctree-l2"><a class="reference internal" href="../../z80/index.html">Z80</a></li> |
| </ul> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../components/index.html">OS Components</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../applications/index.html">Applications</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../implementation/index.html">Implementation Details</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../reference/index.html">API Reference</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../faq/index.html">FAQ</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../debugging/index.html">Debugging</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../guides/index.html">Guides</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../glossary.html">Glossary</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../logos/index.html">NuttX Logos</a></li> |
| <li class="toctree-l1"><a class="reference internal" href="../../../_tags/tagsindex.html">Tags</a></li> |
| </ul> |
| |
| </div> |
| </div> |
| </nav> |
| |
| <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" > |
| <i data-toggle="wy-nav-top" class="fa fa-bars"></i> |
| <a href="../../../index.html">NuttX</a> |
| </nav> |
| |
| <div class="wy-nav-content"> |
| <div class="rst-content"> |
| <div role="navigation" aria-label="Page navigation"> |
| <ul class="wy-breadcrumbs"> |
| <li><a href="../../../index.html" class="icon icon-home" aria-label="Home"></a></li> |
| <li class="breadcrumb-item"><a href="../../index.html">Supported Platforms</a></li> |
| <li class="breadcrumb-item"><a href="../index.html">ARM</a></li> |
| <li class="breadcrumb-item active">ST STM32WL5</li> |
| <li class="wy-breadcrumbs-aside"> |
| <a href="https://github.com/apache/nuttx/blob/master/Documentation/platforms/arm/stm32wl5/index.rst" class="fa fa-github"> Edit on GitHub</a> |
| </li> |
| </ul> |
| <hr/> |
| </div> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div itemprop="articleBody"> |
| |
| <section id="st-stm32wl5"> |
| <h1>ST STM32WL5<a class="headerlink" href="#st-stm32wl5" title="Permalink to this heading"></a></h1> |
| <p>The STM32WL5 is a dual CPU (not core!) chip based on ARM Cortex-M4 and |
| Cortex-M0 with integrated sub-GHz radio for LoRa (G)FSK, (G)MSK and BPSK |
| modulations.</p> |
| <p>Only Cortex-M0 has access to radio peripheral. Pipe between CPUs exists |
| so that radio packets can be exchanged between CPUs. Chip was designed |
| so that Cortex-M0 cpu handles radio traffic while Cortex-M4 cpu handles |
| actions based on traffic received. All other peripherals are shared |
| (like uart, spi, i2c) and both CPUs can initiate them, but it’s required |
| to be done only by one of them.</p> |
| <section id="supported-mcus"> |
| <h2>Supported MCUs<a class="headerlink" href="#supported-mcus" title="Permalink to this heading"></a></h2> |
| <p>STM32WL5 has only two chips in family. STM32WL55 and STM32WL54. Only |
| difference between them is that STM32WL55 has support for LoRa while |
| Stm32WL54 does not.</p> |
| </section> |
| <section id="peripheral-support"> |
| <h2>Peripheral Support<a class="headerlink" href="#peripheral-support" title="Permalink to this heading"></a></h2> |
| <p>The following list indicates peripherals supported in NuttX:</p> |
| <table class="docutils align-default"> |
| <thead> |
| <tr class="row-odd"><th class="head"><p>Peripheral</p></th> |
| <th class="head"><p>Support</p></th> |
| <th class="head"><p>Notes</p></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="row-even"><td><p>IRQs</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>GPIO</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>EXTI</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>HSE</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>PLL</p></td> |
| <td><p>Yes</p></td> |
| <td><p>Tested @ 48MHz</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>HSI</p></td> |
| <td><p>Yes</p></td> |
| <td><p>Not tested</p></td> |
| </tr> |
| <tr class="row-even"><td><p>MSI</p></td> |
| <td><p>Yes</p></td> |
| <td><p>Not tested</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>LSE</p></td> |
| <td><p>Yes</p></td> |
| <td><p>Not tested</p></td> |
| </tr> |
| <tr class="row-even"><td><p>RCC</p></td> |
| <td><p>Yes</p></td> |
| <td><p>All registers defined, not all peripherals enabled</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>SYSCFG</p></td> |
| <td><p>Yes</p></td> |
| <td><p>All registers defined, GPIO EXTI works, remapping not tested</p></td> |
| </tr> |
| <tr class="row-even"><td><p>USART</p></td> |
| <td><p>Yes</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>LPUART</p></td> |
| <td><p>Yes</p></td> |
| <td><p>full speed with HSE works, low power mode with LSE not implemented</p></td> |
| </tr> |
| <tr class="row-even"><td><p>FLASH</p></td> |
| <td><p>Yes</p></td> |
| <td><p>Progmem implementation - mtd filesystems like smartfs or nxffs work</p></td> |
| </tr> |
| <tr class="row-odd"><td><p>DMA</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>SRAM2</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>SPI</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>I2C</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>RTC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>Timers</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>PM</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>AES</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>RNG</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>CRC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>WWDG</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>IWDG</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>ADC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p>DAC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-odd"><td><p>IPCC</p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference external" href="mailto:Radio%40CPU0">Radio<span>@</span>CPU0</a></p></td> |
| <td><p>No</p></td> |
| <td></td> |
| </tr> |
| </tbody> |
| </table> |
| <section id="pll"> |
| <h3>PLL<a class="headerlink" href="#pll" title="Permalink to this heading"></a></h3> |
| <p>PLL is a module that allows MCU to generate higher (or lower) clocks than |
| provided by the source. For example it can be used to drive system clock |
| with 48MHz when 8MHz HSE crystal is installed.</p> |
| </section> |
| <section id="lse"> |
| <h3>LSE<a class="headerlink" href="#lse" title="Permalink to this heading"></a></h3> |
| <p>Low speed external crystal. Can be used to clock RTC and/or independent |
| watchdog (IWDG). LSE is usually 32768Hz high precision crystal.</p> |
| </section> |
| <section id="hsi"> |
| <h3>HSI<a class="headerlink" href="#hsi" title="Permalink to this heading"></a></h3> |
| <p>High speed internal clock. Can be used as a source for sysclk and |
| internal buses (APB, AHB). This clock source is not as precise or |
| as stable as HSE, but it cuts down costs by avoiding external |
| hardware (crystal and capacitors) and is usually good enough if |
| operating temperatures are stable. It’s clock is fixed at 16MHz.</p> |
| </section> |
| <section id="msi"> |
| <h3>MSI<a class="headerlink" href="#msi" title="Permalink to this heading"></a></h3> |
| <p>Adjustable internal clock. Can be adjusted by software, but it’s |
| accuracy and stability is even lower than HSI.</p> |
| </section> |
| <section id="hse"> |
| <h3>HSE<a class="headerlink" href="#hse" title="Permalink to this heading"></a></h3> |
| <p>High speed external crystal. Can be used to clock sysclk and internal |
| buses (APB, AHB). External crystal is more precise and more stable |
| than HSI.</p> |
| </section> |
| <section id="rcc"> |
| <h3>RCC<a class="headerlink" href="#rcc" title="Permalink to this heading"></a></h3> |
| <p>Reset and clock control. Enables or disables specific peripherals.</p> |
| </section> |
| <section id="syscfg"> |
| <h3>SYSCFG<a class="headerlink" href="#syscfg" title="Permalink to this heading"></a></h3> |
| <p>System configuration controller. Can be used to remap memory or |
| manage GPIO multiplexer for EXTI.</p> |
| </section> |
| <section id="gpio"> |
| <h3>GPIO<a class="headerlink" href="#gpio" title="Permalink to this heading"></a></h3> |
| <p>Pins can be configured using <code class="xref c c-func docutils literal notranslate"><span class="pre">stm32wl5_configgpio()</span></code> function. Writing |
| to pins is done by <code class="xref c c-func docutils literal notranslate"><span class="pre">stm32wl5_gpiowrite()</span></code> function and reading is done |
| by <code class="xref c c-func docutils literal notranslate"><span class="pre">stm32wl5_gpioread()</span></code>.</p> |
| </section> |
| <section id="uart"> |
| <h3>UART<a class="headerlink" href="#uart" title="Permalink to this heading"></a></h3> |
| <p>Universal Asynchronous Receiver/Transmitter module. UART is initialized |
| automatically during MCU boot.</p> |
| </section> |
| <section id="ipcc"> |
| <h3>IPCC<a class="headerlink" href="#ipcc" title="Permalink to this heading"></a></h3> |
| <p>Inter-processor communication controller. IPCC is used to exchange data |
| between Cortex-M4 and Cortex-M0 CPUs.</p> |
| </section> |
| <section id="exti"> |
| <h3>EXTI<a class="headerlink" href="#exti" title="Permalink to this heading"></a></h3> |
| <p>Extended interrupts and event controller. Extends interrupts not provided |
| by NVIC. For example, there is only one interrupt for GPIO5..9 in NVIC, |
| but thanks to EXTI we can differentiate which GPIO caused interrupt. Such |
| interrupt first goes through EXTI and is then forwarded to main NVIC.</p> |
| <p>EXTI for gpio can be enabled via <cite>stm32wl5_gpiosetevent</cite> function.</p> |
| </section> |
| <section id="flash"> |
| <h3>FLASH<a class="headerlink" href="#flash" title="Permalink to this heading"></a></h3> |
| <p>Place where program code lives. Part of flash can also be used to create |
| small filesystems like nxffs or smartfs to hold persistent data between |
| reboots without the need of attaching external flash or mmc card. Since |
| flash has limited number of erases (writes) it’s best to hold there only |
| data that is no frequently updated (so, configuration is ok, logs are not).</p> |
| </section> |
| </section> |
| <section id="supported-boards"> |
| <h2>Supported Boards<a class="headerlink" href="#supported-boards" title="Permalink to this heading"></a></h2> |
| <div class="toctree-wrapper compound"> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="boards/nucleo-wl55jc/index.html">ST Nucleo WL55JC</a></li> |
| </ul> |
| </div> |
| </section> |
| </section> |
| |
| |
| </div> |
| </div> |
| <footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer"> |
| <a href="../stm32wb/boards/nucleo-wb55rg/index.html" class="btn btn-neutral float-left" title="ST Nucleo WB55RG" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a> |
| <a href="boards/nucleo-wl55jc/index.html" class="btn btn-neutral float-right" title="ST Nucleo WL55JC" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a> |
| </div> |
| |
| <hr/> |
| |
| <div role="contentinfo"> |
| <p>© Copyright 2023, The Apache Software Foundation.</p> |
| </div> |
| |
| |
| |
| </footer> |
| </div> |
| </div> |
| </section> |
| </div> |
| <script> |
| jQuery(function () { |
| SphinxRtdTheme.Navigation.enable(true); |
| }); |
| </script> |
| |
| </body> |
| </html> |
