STM32 MCUs
From FAQs to complete How-to articles, find useful articles on STM32 MCUs programming & troubleshooting, ecosystem, and product details.
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Knowledge Base Articles

How to configure VREFBUF on my STM32

The voltage reference buffer embedded in most STM32 devices serve two main purposes: 1. used as a voltage reference for ADCs, and DACs 2. used as a voltage reference for external components through the VREF+ pin Note that as each product family is un...

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How can I upgrade my X-NUCLEO-LPM01A’s firmware?

Upon powering up the power shield, the current firmware version will be displayed on the LCD.It is recommended to keep your power shield up to date with the latest firmware available. This will allow you to seamlessly use the power shield and STM32Cu...

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How to conduct a STM32 self-schematic review PT. 1

In this two-part article we will cover several main areas of focus when conducting a self-review of a custom STM32 schematic and share some hardware debugging tips.In total, there are seven key areas to consider when conducting your STM32 schematic r...

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How do ThreadX Message Queues work on STM32 part 3

How do ThreadX Message Queues work on STM32? Welcome back to the third part of the "How do ThreadX Message Queues work on STM32" article.  1. How to add Sender2 thread Now that the first demo is completed, let’s add our Sender2 thread and evaluate th...

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How do ThreadX Message Queues work on STM32 part 2

This is the part 2 of the article to explain how the ThreadX Message Queue work on STM32 with working examples. Welcome back! 1. STM32CubeIDE – step by step demo: Launch STM32CubeIDE (version used 1.7.0), select your preferred workspace, click on Lau...

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How do ThreadX Message Queues work on STM32 part 1

Message queues are the primary means of inter-thread communication in ThreadX. One or more messages can reside in a message queue. A message queue that holds a single message is commonly called a mailbox. Messages are copied to a queue by tx_queue_se...

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How does the ThreadX Mutex work on STM32? Part1

A mutex is basically a binary semaphore, which means that only one thread can own a mutex at a time. In addition, the same thread may perform a successful mutex get operation on an owned mutex multiple times. There are two main operations on the mute...

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STM32 I2C does not work

STM32 I2C does not workSummary This FAQ describes few tips related to I2C peripheral on STM32 devices.  1. I2C Hardware 1.1 Signal integrity The I2C IO pins must be configured as open drain mode. The logic high level is driven by external pull-up...

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How to manage multiple EXTIs with the STM32Cube HAL

1. Introduction It is very common to have multiple GPIOs used as External Interrupt (EXTI) sources in an embedded system. But how to manage them in an application code? This is exactly what is going to be covered in this article. 2. Prerequisites Har...

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How to configure and use the PSSI on the STM32H7

1. Introduction The PSSI which stands for Parallel synchronous slave interface and was introduced in our high performance STM32H7 family. The PSSI can be used as a fast interface between two STM32 microcontrollers or between an STM32 and an MPU or FP...

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