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I2C initialization waveform issues

I use the arm chip stm32f401 to communicate with eeprom, and observe the waveforms of the clock and data lines. The rising and falling edges of the initial write and read waveforms are not square waves, but are slow and have some glitches. Later, whe...

Can the array DAC DMA for signals be controlled?

I generated a sinusoidal signal through the DAC using DMA. I understand that DMA performs looping since I use circular mode. In short, I want to control the numbers generated by the DMA. So, when the signal changes to DC (the array contains only 2048...

signal.jpg
macam1 by Associate III
  • 182 Views
  • 4 replies
  • 0 kudos

Resolved! NRST trigger duration STM32H743XIH

We are having trouble understanding the NRST pin characteristics.The STM32H742xI/G STM32H743xI/G datasheet gives these parameters:I have three questions:1. What does 'input filtered' and 'input not filtered' pulse mean?2. Is it by design true that a ...

Yasmine_0-1734012021385.png
Yasmine- by Associate
  • 146 Views
  • 1 replies
  • 1 kudos

Problem with software interrupt on STM32H563

Hello the comminity.I try to use a software interrupt with no secure and no privilege.when I set a bit in EXTI_SWIER1 And re-read the register, the value stay to 0.When the interrupt was fired, It's impossible to distinguish the software interrupt  f...

lozzz by Associate II
  • 297 Views
  • 5 replies
  • 0 kudos

Resolved! STM32H7 USART RX with FIFO - not working

Dear experts,I'm trying to receive continuously from a USART with interrupts.For some reason I don't want to use DMA (the Tilen Majerle's DMA example on github works well, though)So I'm enabling RX FIFO and Receive timeout (RTO) for receiving less th...

Pavel A. by Evangelist III
  • 3957 Views
  • 8 replies
  • 3 kudos

USB CDC Issue on STM32H747I-DISCO

Hello,After trying almost everything I found online, I’m posting here for help.I’m working with an STM32H747I-DISCO board, aiming to exchange data via USB CDC with Windows. I’ve configured the .ioc for USB CDC device (FS or HS) on the Cortex M7 core....

StatusQ by Associate
  • 145 Views
  • 1 replies
  • 0 kudos

STM32H562RIT6 _SPI DMA

Hi I wrote an LCD program with the ST7789 driver using the STM32G0B0CET6 microcontroller under the SPI + DMA protocol, and the LCD worked perfectly. However, when I rewrote this program using the STM32H562RIT6 microcontroller with the same SPI + DMA ...