STM32 MCUs Embedded software

FreeRTOS good practices

Hello,I don't really have a problem, but I'm asking myself questions and I didn't succeed in synthesizing them and find answers on Google.Problem 1:Several tasks want to use the same peripheral, lets say SPI bus for example. What is the best way to p...

On Windows 10 for STM32F407VG MCU, Virtual Com port shows only blank screen on putty.

My work environment as below :1. Window 10 (Version 10.0.18362 Build 18362)2. Laptop processor: AMD PRO A12-8830B R73. My Discovery Board: STM32F407VG MCU 4. Driver Installed :    en.stsw-link009 and Virtual Com port : VCP_V1.5.0_Setup_W8_x645. Codin...

Does STM system bootloader enable internal pull up on UART lines?

I am wondering whether STM system bootloader enables internal UART pull ups? I guess it doesn't, but I can't find this in ST docs.My board does not have external pull ups on UART line and I want to avoid having RX pin floating.

Quick clarification of USB CDC buffer sizes when used with CAN on F072

Hi all!I intend to use USB and CAN on an STM32F072. The datasheet describes a 1KB SRAM buffer, 768B for USB and 256B for CAN.In CubeMX, when I set up the USB as a VCP, by default it sets 1000 bytes for "USB CDC Tx Buffer Size" and 1000 bytes for "USB...

Hello. My name is Kennedy and I would like to know how to turn my STM32F407G-DISC1 into a printer device (printer class)?

Bootloader cannot flash hex files with shorter lines

Hi,we have a hex file coming from GCC which we cannot flash onto the MCU with our own flashing tool (F412 and L471 tested).While investigating, we found that after a shorter line all writing seems to fail silently (still receiving ACK).In the picture...

Issues with SPI using HAL

Hi,I'm new to using HAL, and I'm having several issues with setting up the SPI.I'm using SPI 1 on an STM32F429ZGT6, and using KEIL as my IDE.I've just tried initializing SPI 1 by configuring GPIOA Pins 5, 6 and 7 for their SPI Alternate functions.I s...

STM32H747_DISCO board cannot read Audio Data(MP34DT05TR Mic) based on DFSDM

Board: STM32H747I-DISOSDK: STM32Cube_FW_H7_V1.6.0Pin: PD3(CLK), PC7(DATAIN3)​Problem: Filter->DMA bufer OK. HAL_DFSDM_FilterRegConvCpltCallback and HAL_DFSDM_FilterRegConvHalfCpltCallback function enter normally, but the data is wrong(always the same...