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129 lines
4.7 KiB
HTML
129 lines
4.7 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>STM32 Bringup</title>
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<link type="text/css" rel="stylesheet" href="style.css">
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</head>
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<body>
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<h1>STM32 Bringup</h1>
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<h2>Introduction</h2>
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Getting started with a micro-controller usually means picking up a board,
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an IDE, some RTOS or a set of libraries. Depending of your level of experience,
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your budget and the solutions you select, the learning curve may be a steep
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one and what you will learn can be very limited if you end up cornered in a
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sandbox with no understanding of what’s going on under the hood.
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<p>
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Commercial solutions and mature open source projects are a must if you want to
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develop products with some level of quality. Unfortunately their complexity is
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high because they have to satisfy complex requirements. Their documentation
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and source code when available are often hard to navigate, out of date or just
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not addressing what you need to learn.
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<p>
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Starting from scratch, on the other hand, is not something often documented and
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when it is, it is usually after the fact. So if you want to learn how to do it
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you need to catch the opportunity to watch someone going through the steps and
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explaining what’s going on.
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<p>
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I will try to capture here my own “STM32 bring up” journey using a step by step
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approach, writing down the problems faced and decisions taken while evolving
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simple projects.
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<h2>Part I: Bring it up!</h2>
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I proceed by small incremental steps that are easy to reproduce and simple
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enough to adapt to a variant of the micro-controller or a different board
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layout.
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<ul>
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<li> Pick up a <a href="11_toolchain.html">toolchain</a>, install it and check
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that it can build an executable.
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</ul><ul>
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<li> Write a minimal <a href="12_bootstrap.html">bootstrap</a> for a target
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micro-controller and build a first executable.
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</ul><ul>
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<li> <a href="13_flash.html">Flash</a> the first executable in an actual board
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and verify that it boots.
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</ul><ul>
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<li> Provide feedback by turning the <a href="14_ledon.html">user LED ON</a>
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and making it <a href="15_blink.html">blink</a>.
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</ul><ul>
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<li> Use the System <a href="16_ledtick.html">Tick</a> to handle the blinking.
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</ul><ul>
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<li> Insure that RAM memory is initialized as expected for a
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<a href="17_cstartup.html">C startup</a>.
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</ul><ul>
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<li> Structure the code according to the
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<a href="18_3stages.html">three stages</a>: boot, initialization and main
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execution.
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</ul><ul>
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<li> <a href="19_publish.html">Publish</a> the code to a web git repository
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for further evolution.
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</ul>
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<h2><a id="part2">Part II: Let's talk!</a></h2>
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It’s time to move to a more talkative interface so that the board not
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only winks but also speaks. Again I will go through several steps to get
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to a working asynchronous serial communication.
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<ul>
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<li> <a href="21_uart.html">Validate</a> the serial connection by wiring a
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board with an USB to UART adapter and using a Serial Flash loader application
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to read the chipset flash memory.
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</ul><ul>
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<li> Make sure that the code evolved so far works on the
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<a href="22_board.html">board</a> with a serial connection.
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</ul><ul>
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<li> Say <a href="23_hello.html">hello</a> as first transmission.
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</ul><ul>
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<li> Use <a href="24_stm32flash.html">stm32flash</a> as flashing tool on both
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Windows and Linux.
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</ul><ul>
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<li> <a href="25_prototype.html">Prototype</a> an application that tells how
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long the system has been running.
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</ul><ul>
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<li> Write a production version of <a href="26_uptime.html">uptime</a> application.
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</ul><ul>
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<li> Bundle the standard C library output functions into an actual
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<a href="27_library.html">library</a>.
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</ul><ul>
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<li> <a href="28_clocks.html">Configure</a> baud rate and clocks.
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</ul><ul>
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<li> Handle the transmission with <a href="29_interrupt.html">interrupt</a>.
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</ul>
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<h2><a id="part3">Part III: Sensors! So hot! So wet!</a></h2>
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<ul>
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<li> Implement <a href="31_dht11.html">DHT11</a> humidity and temperature
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sensor reading.
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</ul><ul>
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<li> <a href="32_errata.html">Investigate</a> the quality of the DHT11
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measurements.
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</ul><ul>
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<li> Use <a href="33_ds18b20.html">DS18B20</a> digital thermometer for accurate
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temperature reading.
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</ul><ul>
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<li> Trigger <a href="34_adcvnt.html">ADC</a> conversion to read the internal
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voltage and temperature sensors.
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</ul><ul>
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<li> <a href="35_calibrate.html">Calibrate</a> the internal temperature sensor.
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</ul><ul>
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<li> <a href="36_update.html">Update</a> toolchain to latest.
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</ul><ul>
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<li> Build for <a href="37_inram.html">In RAM Execution</a>.
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</ul><ul>
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<li> Perform <a href="38_crc32.html">CRC-32</a> flash content validation
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during startup.
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</ul><ul>
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<li> Read a <a href="39_resistor.html">Resistor</a> Value.
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</ul>
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<h2>Appendices</h2>
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<ul>
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<li> <a href="AA_factory.html">Factory-programmed</a> values.
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</ul>
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<hr>© 2020-2024 Renaud Fivet
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</body>
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</html>
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