STM32 MCUs Products

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Forum Posts

Questions on FMC throughput with DMA

I'm working on a project which uses DMA to pull data from an external chip controlled by the FMC into a buffer in AXI SRAM, and am seeing a much lower throughput than expected. It looks like the FMC is idle for long periods of time, and I'm looking f...

8-bit-dma-capture.png 32-bit-dma-capture.png 64-bit-core-capture.png
BenDDMC by Associate
  • 223 Views
  • 0 replies
  • 0 kudos

UART RS485 how to manage half-duplex

Hello,I implement RS-485 on STM32G491. I receive with ReceiveToIdle_DMA and I also transmit with DMA. I need to know if currently something is being received because that means I cannot send data now because RS485 is half-duplex. As far as I know I c...

Ramzes11 by Associate
  • 435 Views
  • 4 replies
  • 2 kudos

Resolved! STM32L431KCUX UART cannot receive more than 49 bytes

Recently I have encountered a strange issue I cannot really explain...I have a firmware that manages serial UART communication with a callback that has a state machine with 3 states.In the first state, UART is set to perpetually expect 1 byte of data...

MO94 by Associate III
  • 636 Views
  • 15 replies
  • 8 kudos

Resolved! LPTIMER fail to wakeup in STOP2 mode for longer timeout

Hello,Trying to achieve wakeup system at every 60 sec or more using LPTIMER1 in STOP2 mode.Observation:1. STOP2 = enable and LPTIMER = 60 sec --> Wakeup not work2. STOP2 = disable and LPTIMER = 60 sec --> Wakeup work3. STOP2 = enable and LPTIMER = 2 ...

npatil15 by Associate III
  • 523 Views
  • 9 replies
  • 0 kudos

Resolved! Is a bootloader necessary?

can anybody answer please, if i costmised board based on  bg431besc1 board  it needed to upload boot loader file in stm32g431 controller to run in stm32ide code ?

STM32H743VGT6 and STM32H723VGT6 - XIP Support on QSPI?

We are currently using the STM32H723VGT6 MCU (1MB Flash) in our application.We would like to clarify whether this MCU supports execute-in-place (XIP) from Quad-SPI flash or if Octal-SPI is required for XIP functionality.In the future, if our applicat...

LP257_0-1748509800393.png
LP257 by Associate
  • 215 Views
  • 2 replies
  • 0 kudos

Resolved! STM32H743XGH6 USB VBUS

I want to use port PA9 of STM32H743XGH6 as “FS_VBUS”. In this case, which number should I put in the target register for the alternate function? I understand that if I use CubeMX, it will set it automatically.

NiM by Associate III
  • 626 Views
  • 8 replies
  • 11 kudos