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 does the ThreadX Semaphore work

ThreadX provides 32-bit counting semaphores that range in value between 0 and 4,294,967,295. There are two operations for counting semaphores: tx_semaphore_get and tx_semaphore_put. The get operation decreases the semaphore by one. If the semaphore i...

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How to reach 480MHz for STM32H7xx MCUs

You can reach 480MHz only for the following STM32H7 part numbers:  STM32H747/757 STM32H745/755 STM32H743/753STM32H742STM32H750 Note: For some parts, you need to check the maximum frequency from the datasheet.This is not enough! you also need to check...

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Foued_KH by ST Employee
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How to disable Trustzone on STM32U5 Series

The aim of this article is to provide guideline for disabling Trustzone on STM32U5. 1. Hardware and software setup Nucleo MB1549-U5A5ZJT6Q1. Hardware and software setupSTM32CubeProgrammer As you can see when connecting your board to STM32CubeProgramm...

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How to connect a J-Link debug probe to the Nucleo-WB55RG

1. Introduction Onboard, the NUCLEO-WB55RG includes a ST-LINK/V2-1 debugger/programmer with USB reenumeration capability: mass storage, virtual COM port and debug port.The ST-LINK/V2 is an in-circuit debugger and programmer for the STM8 and STM32 mic...

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How does the ThreadX Mutex work on STM32 Part2

Welcome to the second part of the article covering how to use the Mutex in the ThreadX using STM32 (Part 1 available here). This will cover the code editing and debugging. 1. Code Editing and debugging Using the previously code generated, open Core\S...

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How to change the readout protection on STM32F4

How to change the readout protection on STM32F4? Introduction STM32F4 microcontrollers offer three levels of readout protection: level 0 (no protection), level 1 (Flash memory, backup SRAM, and backup registers protected), and level 2 (same as level ...

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How to change the Read Out Protection on STM32F7

Introduction STM32F7 microcontrollers offer three levels of read-out protection: level 0 (no protection), level 1 (Flash memory, backup SRAM, and backup registers protected), and level 2 (same as level 1, but with permanent protection by locking the ...

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How to change the Read Out Protection on STM32H7

Introduction STM32H7 microcontrollers offer three levels of read-out protection: level 0 (no protection), level 1 (Flash memory, backup SRAM, and backup registers protected), and level 2 (same as level 1, but with permanent protection by locking the ...

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How to change the Read Out protection on STM32F3

Introduction STM32F3 microcontrollers offer three levels of read-out protection: level 0 (no protection), level 1 (Flash memory, backup SRAM, and backup registers protected), and level 2 (same as level 1, but with permanent protection by locking the ...

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How to change the Read Out protection on STM32F2

Introduction STM32F2 microcontrollers offer three levels of read-out protection: level 0 (no protection), level 1 (Flash memory, backup SRAM, and backup registers protected), and level 2 (same as level 1, but with permanent protection by locking the ...

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How to change the Read Out Protection on STM32F1

Introduction STM32F1 microcontrollers offer three levels of read-out protection: level 0 (no protection), level 1 (Flash memory, backup SRAM, and backup registers protected), and level 2 (same as level 1, but with permanent protection by locking the ...

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Getting started with the STM32U5 IoT Node and Azure IoT

Summary This article provides the necessary information for getting started with the B-U585I-IOT02A IoT Node with Azure IoT 1. Hardware The B-U585I-IOT02A discovery kit provides a complete demonstration and development platform for the STM32U585AI mi...

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Why do we need a bootloader in a microcontroller?

1. Programming without JTAG/SWD probes There are a few reasons a bootloader is needed in a microcontroller, including the main one: programming/updating the user application without the need of JTAG/SWD probes with the desired level of security neede...