STM32 MCUs Products

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2 Nucleo as slave to Modbus master

I want to connect 2 Nucleo F103RB as slave (2 Nucleo slaves) to one master (PC for now) over Modbus (RS485). how can I do that? Please note I am new to STM32, so I have limited knowledge.P.S. I have connected one master (PC) and one slave (Nucleo) bu...

Resolved! STM32L476RE output characteristic impedance

Hi team,I am currently developing a board with the STM32L476RET6. This project involves UART communication (UART4, PA0 and PA1), and I am concerned about EMI due to the fast rising and falling edges of the TX signal. To address this issue, I am imple...

LucasRosa by Associate III
  • 2697 Views
  • 9 replies
  • 2 kudos

Resolved! Stm32f429zi RCC setup

Hi!I'm using Nucleo-f429zi board and my trying to configure it to read and write data over modbus RTU (RS485)and i'm using keil uvision 5 to program. I have referred some videos and post on how to configure STM32 and its USART port for modbus communi...

jared212 by Associate
  • 827 Views
  • 1 replies
  • 0 kudos

STM32U5A5 GPIO state change on Stop2 mode enter

I am trying to figure out why the state of GPIO pins are changing after entering Stop2 mode. I've got an ADC chip connected with Reset lines being held high by GPIO pins configured as push-pull with pull-ups enabled. When the device enters Stop2 mode...

STM32U5 RAMCFG wait state config

Hi, I'm currently using the STM32U575 to develop a product, and my clock configuration is set to the maximum of 160MHz because I'm dealing with a large amount of data. I have two SPI channels collecting data at a sampling rate of 20kHz, with each sam...

OneLine by Associate II
  • 852 Views
  • 1 replies
  • 0 kudos

STM32Cube Programmer DFU mode for Mac

Hi,We were using CubeProgrammer on Windows to program our MCU in DFU mode and everything was moving well until we noticed MAC does not detect USB in DFU mode.So, I am wondering if there is something we are missing to do which the MAC operating system...

ashah.16 by Associate II
  • 929 Views
  • 1 replies
  • 0 kudos

Resolved! STM32F446 DAC DMA with asymmetrical output

Hi all, I need to generate a DAC output which is operating on 2 quadrants and the quadrants may be asymmetrical with respect to both the duty cycle and the amplitude. Attached a picture which better explains what I need. MCU STM32F446RE DAC OUT1 on p...

McMax by Associate II
  • 2872 Views
  • 7 replies
  • 1 kudos

Resolved! STM32H753: DMA sometimes does not transfer data

Hello,I have a problem on a STM32H753 which I do not understand.I want to sample some data from ADC with a given time period.So I use the TIM2_TRGO as Event generator for the ADC3 (via EXTSEL)ADC3 is configured in 12 Bit single conversion, in the seq...

Moritz1 by Associate III
  • 2019 Views
  • 6 replies
  • 0 kudos