STM32 MCUs Products

ADC front end design to remove high frequency noise

Hi everyoneI am working with STM32F429Zi microcontroller on a customized board. I am acquiring the signal shown below (oscilloscope screenshot) with ADC3 at a sampling rate of 300ksps. The input signal is a 10kHz sinusoidal waveform superimposed on a...

Should I set HAL_DMA_STATE_READY in circular mode?

Hi,I'm implementing a circular buffer for UART transmit via DMA on an STM32L4 device.I've got a callback that updates the read pointer and calls another HAL_UART_Transmit_DMA if it's still not equal to the write pointer.This callback is called by:HAL...

Will resetting the RTC (Real Time Clock) module frequently destroy the microcontroller due to excessive writes to non-volatile storage?

I am in the process of understanding the internals of the RTC (Real Time Clock) inside the STM32F446 microcontroller. I have already written some code and released it and now I'm afraid that the code might damage the microcontroller in the long run. ...

How to increase SPI display (ili9341) draw speed?

How to fill the screen with one color without seeing the draw pattern from top to bottom?All I want is to make screen instantly change color. I understand that drawing bitmap might be slow, but I want just one color.Is there a way to reduce display c...

STM32L081xx CPU frequency change documentation erratum?

HiIn the STM32L081 datasheet (DS10888 Rev 6: https://www.st.com/resource/en/datasheet/stm32l081cz.pdf ), on page 16, under "3.1 Low-power modes" there is this note:CPU frequency changes from initial to final must respect "fcpu initial <4*fcpu final"....

UART_Mutex not working properly!

Dear friends,I've created a UART mutex and when threads only send data over uart, everything works fine but when it is time to also receive data, after a while data is corrupted and the information is wrong and no data is valid! if( osMutexWait(modb...

hello, I'm trying flash a stm32f429ZI with openocd but i'm blocked by an error. Someone can help?

I need to reinitialize my board. Various Readmes suggest going to https://stm32-c2c.com to "restore factory firmware". I login to my stm32-c2c account and there is no option to "restore factory firmware", only language and my profile.

STM32F469 Quad SPI registers inaccessible.

I am attempting to configure the quad spi peripheral on an stm32f469 microcontroller.The address space for the QSPI starts at 0xa0001000.However, the address space from 0xa0001000 to 0xbfffffff is inaccessible. Attempting to read or write to these r...