Introduction The STM32H5 microcontroller series has been observed to exhibit issues when using the GO command to start user code after entering the bootloader via a hardware reset. This article aims to explain the problem in detail and provide possi...
Introduction The delay block is an independent peripheral integrated within an STM32 MCU, for example, an STM32U5. Its role is to introduce a phase shift relative to the input clock. The user application configures the phase of the output clock. This...
Introduction The goal of this article is to help readers make sense out of the RTC_SSR register, the RTC’s sub second value (SS), and the second fraction equation. This article uses the STM32L476xx MCU and its reference manual RM0351 as an example, b...
Introduction The USB Type-C® and USB PD specifications revolutionized device connectivity by merging data transfer and power delivery for up to 240 W (with EPR in USB PD 3.1). A key feature, fast role swap (FRS), allows a power supplying device quic...
Introduction Many STM32 users start their development based on one of ST boards either to evaluate the STM32 MCU or to get the proof of concept of their application. One of the first steps to do in the evaluation process is to look at the board schem...
Introduction The WB55CG USB dongle is included in the P-NUCLEO-WB55 bundle together with the NUCLEO-WB55RG. The WB55CG dongle does not have an ST-LINK/V2-1, but the NUCLEO-WB55RG does. The WB55CG USB dongle can be programmed through USB BootLoad or...
Introduction The NUCLEO-WB55RG has an on-board ST-LINK/V2-1 debugger/programmer. This ST-LINK/V2-1 is integrated on the same SoC as the MCU. This means that we cannot separate the hardware design into two parts; ST-LINK, and target MCU. For this rea...
1. Cyclic Redundancy Check Cyclic Redundancy Check (CRC) is an error detection method for digital data based on binary division.CRC algorithm generates a fixed checksum code length. 2. How is CRC value calculated, how to determine CRC algorithm in ...
Defining VCAP VCAP is the digital core supply provided by the internal LDO regulator. VCAP pins are present only on LDO packages (without SMPS). STM32U5 external capacitor on VCAP pin recommendations For the STM32U5 series, the external capacitor on ...
Objective An important requirement for flash-memory based systems is the ability to update firmware when installed in the end-product. This facility is referred to as in-application programming (IAP) which can be used to restart the microcontrol...
Introduction The STM32H7R/S devices come with 64k bytes of boot flash allowing applications to run from external memory. The STM32CubeH7RS firmware package comes with a rich set of examples running on STM32H7S or STM32H7R boards. Each example requir...
Introduction The STM32H7 devices feature a RAM ECC monitoring unit called RAMECC. A dedicated RAM ECC monitoring area is defined for each domain. For example, on the STM32H723x/33x series, there are three RAMECC monitoring units (one per domain). The...
Introduction The Elliptic Curve Digital Signature Algorithm (ECDSA) is a cryptographic method used to ensure the authenticity and integrity of digital messages or documents. Various applications, including secure communications, blockchain technolog...
Summary This article presents a step-by-step tutorial on who to use the USBX package to develop a USB device composite application on an STM32. The tutorial is based on NUCLEO-H723ZG and can be easily tailored to any other STM32 that is compatible w...
Introduction The real-time clock (RTC) can be used as a source to periodically wake-up the microcontroller, perform necessary tasks, and then return to low-power mode. Furthermore, the RTC can be used to calculate the elapsed time while the microco...
Introduction When working with the STM32U5 microcontroller, you may encounter issues where the low-power timer (LPTIM) fails to wake the device from stop 2 mode. This article provides insights on what might cause the issues. 1. Using LPTIM2 instanc...
The Secure Manager for STM32H573 version 1.2.0 has recently been released. It’s available on our Secure Manager webpage. We wanted to inform you about the importance of this new release, and to refresh how it could improve your security concerns. Up...
Introduction For a firmware developer targeting and STM32 MCU based on a Cortex® M, they need to keep an eye on memory access, hardware availability, clock, and power. This is needed to avoid running into issues that can be hard to follow and determ...
Summary This article covers how to program and debug your STM32 device with the Arduino IDE. In this knowledge article, we explore the following main points: How to install the STM32 MCUs in the Arduino IDEHow to program a simple blink LED based on ...
Summary This article provides a step-by-step guide on how to configure your STM32 to have a super simple bootloader and application. Additionally, a third region in memory where a shared set of functions between the two other codes can reside. The b...
