STM32 MCUs Products

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Resolved! ADC power circuit

Hello, I am developing a circuit using STM32L4R9AI, VDD = 1.8v, VDDA&VREF+ = 3.13v, according to ST hardware design manual (I attached) for a better power filtration there should be bead between VDD and VDDA, will that create a problem given the volt...

STm32L496 IAP and BLE

Hi !I've been trying to update my STM32L496 firmware over BLE.Our bootloader use Ymodem to transfer files (as it's explained in the Application note). I have connected the UART of my BLE chip with the UART of the STM32). I can send the file (only fro...

FGuil by Associate
  • 605 Views
  • 1 replies
  • 1 kudos

Resolved! ADC overrun error. Multiple DMA usage.

Hi,I am using a NUCLEO F334 development board.I am using the ADC with the DMA. I developed that feature and tested and everything looked alright. I have been developing some more over that and I see that after startup the values are correct but after...

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mur by Associate III
  • 6056 Views
  • 10 replies
  • 0 kudos

Ethernet STM32H7 DMA

Hi everybody,Currently we have a weird thing with Ethernet on STM32H7.Everything work fine if disable cache globally.When enable cache, work fine. We can send/receive few hundreds MB or keep ping /t from PC few days, no error. So we believe we config...

Dat Tran by Senior II
  • 725 Views
  • 3 replies
  • 0 kudos

MAY i use Interrupt handler multiple times ?

In the follwoing code i would like to use same interrupt multiple times in order to blink the 4 leds different time. i am storing the data in unint8_t ABB, i expect that each time i press the button the value in ABB is incremented but practically n...

ALE1 by Associate II
  • 1301 Views
  • 5 replies
  • 0 kudos

Resolved! STM32L052K8 custom board does not run while the same board for STM32F051K8 works (same pinout and peripherals on the PCB)

Updated Question:I have a custom PCB board with L052K8 and F051K8 with the same peripherals and correct hardware design for each (F051K8 has a VSSA for the ADC and different bypass cap), but only the L051K8 is able to program its firmware and reset c...

JLee.161 by Associate III
  • 1364 Views
  • 8 replies
  • 0 kudos

How to change the frequency of the PWM using potentiometer

Hello guys good day to you. May I ask you if you can share your experience on changing the frequency of a PWM using a pot. I am using a small board with the STM32F103C8 MCU. I've set TIM2 _CH1 of PA0 as output. I connected a potentiometer to PA...

RSy.1 by Associate III
  • 1519 Views
  • 4 replies
  • 0 kudos

stm32l4 not leaving dfu mode and starting program.

So for this question, I'm using stm32l4 device. It is a Cortex M4. I've been developing with stmcubemx and Kiel compiler.I have a program that can jump to the stm32 provided dfu mode. That works great. I can update the code using DfuSe Demo.I've run ...

VBarb.1 by Associate II
  • 1828 Views
  • 6 replies
  • 0 kudos

I2C Master - strange behaviour (Busy, HAL error)

Hello, I have a problem with the I2C communication on my STM32F405. The F4 is running in master mode and has 3 identical sensor connected to I2C1, I2C2 and I2C3. I want to read from the sensors "parallel" 3 bytes with the HAL_I2C_Master_Receive_IT fu...

KR51K by Associate III
  • 1450 Views
  • 4 replies
  • 0 kudos