STM32 MCUs products

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Resolved! STM32F427VI firmware retrieval

Hi All, Been reading and learning a lot about MCU's in general. I'm very very new to all of this so please bare with me.The board comes with STM32F427, and a custom .exe that can flash directly via USB-C. I've read about fake STM32's, and. I'm not su...

Flushing/resetting DMA state

So DMA can read/write from 16bit SPI DR, to 32bit memory variable, in circular mode,I need to reinit stream, but DMA TX ends up off by one 16bit in destination array,so how can I partially reinit DMA to beginning or array/or even addresses?Without fu...

mrx23 by Associate III
  • 2 replies
  • 0 kudos

stm32f4 timer based interrupt function execution

hey!im working on data logging and want to store all data in text filewhere i want to save date and time with the use of RTC clock and external interrupt based on timer with gap of 1 sec i have things configured correctly for the RTC which works fine...

_kalpesh by Associate II
  • 4 replies
  • 2 kudos

Resolved! Issue with uart USART_ISR_EOBF bit

Hi I have a stm32L433, and setup Uart1 for standard TX and RX with interrupt for both send and receive (9600N81 setup). I don't use any hardware handshake . Within the IRQ routine occasionally the USART_ISR_EOBF bit in the ISR is set , and I am not u...

HAL fails to switch VRef from internal to external H743

Changing VRef source would seem simple, but it doesn't work, there is no change in the levels the ADC records. __HAL_RCC_VREF_CLK_ENABLE();HAL_SYSCFG_DisableVREFBUF(); // Disable the Internal Voltage Reference buffer, uses external 3.3vHAL_SYSCFG_VRE...

Robmar by Senior III
  • 1 replies
  • 0 kudos

ADC Measurement error in STM32F030C8

Hi ST Community, I am trying to measure system voltage (Lead Acid Battery) using ADC input of STM32F030C8 (PB1). The system voltage can be between 9V and 13.5V () so I am using voltage divider (10k and 1k) to lower the voltage to the 0 - 3.3V range. ...

shydv15 by Associate
  • 2 replies
  • 0 kudos