STM32 MCUs Products

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MCU working issue.

I am using STM32F439ZGT6.I have flashed the code to this controller. After flashing the code when I restart (power off and power on ) the MCU first time, that time unit is working absolute fine but if I power off and power on the unit, that time I am...

GAGGA.1 by Associate II
  • 724 Views
  • 5 replies
  • 0 kudos

Resolved! Behaviour of STM32H743 general purpose timer

Hello,I'm using TIM2 on STM32H743 (Nucleo, rev Y, Keil 5.31).Just before setting the bit TIM_CR1_EN the setting of the timer is the following:DIER : bit UIE setPSC: expected value (0x4E1F)ARR expected value (0x4E20). it is almost the same as PSC but ...

Gpeti by Senior II
  • 1959 Views
  • 6 replies
  • 1 kudos

Resolved! STM32F030C6 wih external oscillator (HSE)

I am trying to understand how to setup the microcontroller (STM32F030 in this case) to use external oscillator. I am using blinking LED as a test to see if the code is running. To setup the HSE I did following:selected Crystal/Ceramic Resonator in Hi...

BJerk.1 by Associate II
  • 836 Views
  • 2 replies
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Resolved! STM32H743 IWDG continuously reset MCU

Strange behavior of STM32H743. It continuously reset every few seconds.I check reset reason with this part of code after system startup:if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDG1RST)) { _PRINTF("RESET_CAUSE_INDEPENDENT_WATCHDOG_RESET\n"); } else...

STM32F769NI: UARTs do not connect in bootloader mode

Hi,I am asking for some sound technical help on the STM32F769NI BootloaderI am using an STM32F769NI MCU and wish to update the firmware using STs' Bootloader mode via the UART.I am running into problems that none of the UARTs on Pins PA9/PA10, PB10/P...

gps by Associate II
  • 1054 Views
  • 4 replies
  • 0 kudos

ADC digital reading

Hello,I'm using the NUCLEO-F722ZE EVB.Page 155 of the datasheet describes the ADCs characteristics: https://www.st.com/resource/en/datasheet/stm32f722ze.pdfFrom the NUCLEO-F722ZE schematics I see that VDDA as well as VREF+ are 3.3V. VREF- is zero vol...

skon.1 by Senior
  • 885 Views
  • 3 replies
  • 0 kudos