STM32 MCUs Products

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Resolved! SPI communication using DMA on the STM32H743.

SPI communication using DMA on the STM32H743.We have created a program for SPI communication using DMA, The first send/receive with HAL_SPI_TransmitReceive_DMA is successful.However, when the exact same process is executed afterwards, all received va...

Resolved! UART IRQ fired but no IRQ source configured

Hello,I have a H7 design with multiple UART/USART used to communicate via RS485 drivers (XR3072).I have programmed kind of loopback test by connecting the A/B signals of two RS485 busses.For this I use 2 DMA channels for each UART, one for RX and one...

uart_irq_status.png
regjoe by Senior
  • 441 Views
  • 9 replies
  • 1 kudos

Resolved! Read 96 bit UDID through serial bootloader or SWD

Hello,I am working on the STM32F103xx. I need to read out the 96 bit UDID (unique device ID) of the devices during production. Is there any way of reading this out from the serial bootloader on UART1 or through the SWD interface? I searched the AN315...

machinist by Associate III
  • 2334 Views
  • 6 replies
  • 0 kudos

Resolved! STOP2 Mode I2C

I'm trying to use the LPBAM feature on the STM32U5 to perform I2C communication during STOP2 mode.I followed the official STM32 LPBAM example and implemented my code accordingly.Here is what I'm attempting:Use LPTIM to generate a PWM signal during ST...

dlagyals by Associate II
  • 356 Views
  • 4 replies
  • 0 kudos

HPDMA XSPI flash all zeros are written

Hi. I'm trying to get HPDMA to write to flash memory on the stm32n6570-dk board. I did the DMA configuration exactly like the XSPI_NOR_ReadWhileWrite_DTR example for the STM32H7. The problem is that all zeros are written and I've run out of ideas wha...

Artur5 by Associate III
  • 310 Views
  • 4 replies
  • 0 kudos

Resolved! ADC read in DMA regular mode

I've requirement of reading 100 samples of ADC data using DMA whenever it's needed in regular mode and I see the read buffer is not having right values and also HAL_ADC_ConvCpltCallback is not hitting.But same if I try just with one sample data is pr...