STM32 MCUs Products

Ask questions, find answers, and share insights on STM32 products and their technical features.

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

STM32L552: DP TARGETID reads 00000001

Hello,with the same procedure that reads the DP TARGETID fine on STM32F7 and STM32H7, on STM32L5 the TARGETID only reads 00000001 (RM0438, p 2000, DP target identification register (DP_TARGETIDR).Do I do something wrong or is this an errata not yet l...

STM32F439 power down GPIO state

When STM32F439 power supply is dropping from 3.3V to 0V what will be state of GPIO which is configured as Mode output pp, pull up and speed_fast whether it will hold to value mentioned in GPIOx_ODR

PV C by Associate II
  • 650 Views
  • 1 replies
  • 0 kudos

STM32F439 GPIO Initialization state

If we initialize the GPIO pin as Mode output pp, pull up and speed_fast using HAL_GPIO_Init()​ API then what will be the state of the GPIO pin when pin status is not set using HAL_GPIO_WritePin()

PV C by Associate II
  • 741 Views
  • 1 replies
  • 0 kudos

Resolved! openOCD not halting my chip (srst not working?)

I am trying to flash code in my stm32 via SWD interface with a raspberryPi.(swd is bitbanged no stlink used)With my raspberryPi Zero i followed this tutorial, wired the raspy with my stm32f105 together.My openocd.cfg file looks like:source [find inte...

0693W00000FDm3jQAD.png
Javier1 by Principal
  • 3853 Views
  • 2 replies
  • 0 kudos

How to fix SDIO error HAL_SD_ERROR_RX_OVERRUN?

Hi, I have issues while using "FATFS R0.12c" over SDIO on my STM32F407. I do SDIO write to file on main loop, but I also have "TIM2/TIM3/CAN1 RX0/CAN1 RX1" interrupts which has other logic (for example TIM2 sends UART message every 100ms to update th...

JBond.1 by Senior
  • 2702 Views
  • 7 replies
  • 1 kudos

Hi. I have been using STM32F1xx for many years. I have a new design that uses two uarts and the ADC peripheral - all using DMA. My question is: is it possible to overload the bus arbiter when there are too many dma transactions going on at the same time?

When both UARTS are transmitting & receiving, my ADC conversions (via DMA) sometimes do not complete. If I double clock speed (which I do not want to do in the product), the problem goes away. I cannot see any issues in my code that would cause this....

STM32L476 with WLCSP72 package has outpin problem.

Hi everbody,I am using STM32L476 mcu with WLCSP72 package on my designed board. On this mcu PC5, PC4, PB14, PC13 and PB13 pins are configured as an output-pushpull. The problem is, when the PB13 pin is set from Low to High, each time short-term pulse...

Resolved! STRM32F303 EXTI9_5 and EXTI15_10 external interrupt triggered either on falling or rising edge although programmed to be triggered only on rising edge, how to fix this?

Hello,So we are building a ball shooting robot which self detects the speed the ball was launched. The average speed is in range of 80mph. To get speed we are using two light gates, one on PF9 and one on PF10. So I set up EXTI interrupts on these two...

kuchx by Associate II
  • 4611 Views
  • 9 replies
  • 0 kudos

STM32H743 UART configurations for non-standard baud rate

Hi,I'm using STM32CubeMx to generate UART initialisation code for STM32H743 controller. I'm able to test UART communication for baud rate 3686400. I'm not able to make UART communication up & running when I changed baud rate to 4000000.Is there other...

S.Kamath by Associate III
  • 1782 Views
  • 2 replies
  • 0 kudos