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 When working with the STM32H5 series microcontrollers, understanding the behavior of reading unwritten One-Time Programmable (OTP) or flash high-cycle area data is crucial. This article addresses the feasibility and implications of such...
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...
How is CRC value calculated, how to determine CRC algorithm in embedded applications?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 chec...
Summary The following article is a tutorial on how to implement the USB device, HID mouse class, using the Azure RTOS USBX package in standalone mode (without the RTOS). 1. Introduction Hello developer and welcome to this article! For this tutorial,...
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 ...
How to configure swap bank on STM32H7? (Part 1) 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 (IA...
Summary This article provides a step-by-step guide on how to configure your STM32H7R/S to transfer ADC converted values in DMA circular mode using STM32CubeMX (version 6.12 is used). For a complete firmware example, refer to the attached project a...
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...
Summary This article shows how to integrate Mbed TLS with hardware acceleration offloading benefiting from embedded hardware crypto engines (AES, PKA, HASH). Introduction The STM32H5 series is a powerful microcontroller family that benefits from ha...
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...
This article is applicable for STM32H74x, STM32H75x, STM32H72x, or STM32H73x microcontrollers. We often see developers facing issues with these microcontrollers when they need to use BDMA, or DMA to transfer data to/from the RAM, but no transfer is...
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...
