STM32 MCUs Products

Confusion about ADC calibration

In documents and lots of online sources there is a formula as follows(attached below),But I cannot get why CAL value is in the numerator and RAW data is in the denominator. I have this logic in my mind,In the factory, producers used a preknown/fixed ...

How to use the CMSIS-Library in STM32F756ZGT6 for FFT?

Hi,i am a new user and bought the STM32F756ZGT6 Nucleo-144 board for the university.I tried to use the CMSIS-Function to do a real Fast Fourier Transformation on 1024 samples values. I created a new Project using dma for fast sampling. When I add the...

UART overrrun error while using STM32L476RG nucleo Board

I am running my code on an STM32L476RG which generates a UART interrupt every time it receives data. I am using UART2 for this purpose and USART1_IRQHandler is called after I send data from my terminal. But inside  HAL_UART_IRQHandler, my code gets s...

STM32F7 MQTT implementation

Hi everybody,actually i'm working on a project involving a STM32F7 MCU and a modem Telit 4G/LTE connected via UART. I have to implement MQTT protocol, for which i choosed PAHO (highly used and suggested). Do you suggest working on bare metal or RTOS...

Is this the primary community support forum for the ST32F4? There is not much activity....there must be another resource

why i get the VDDA value from VREFINT is wrong ?

I use MCU STM32L073, set VDDA=VREF+=3.29V, VSSA=VREF-=GND=0V.I read Vrefint_cal for (0x1FF80078), get the value of Vrefint_cal = 0x680get Vrefint_data from ADC_CHANNEL_17, get this value is Vrefint_data =0xbb7 the code is here:///////////////////////...

How do I get the IP address using dns_gethostbyname()?

cpu : stm32f4 I want to get the IP address using dns_gethostbyname. However, I can not get the IP addressHow do I get the IP address ? ( I set the DNS service using stm32cubeMX.) ==================================void main(void){   int test=dns_getho...

How to unlock the write protection for the Real time clock in stm32f407

Hi,I'm currently trying out the configuration of RTC in the STM32F407G-DISC1 using Atollic truestudio.I was successful in enabling RTC registers write access by setting the DBP bit in PWR_CR registers after system reset, but I'm unable to write the k...

STM32L432KC - Bootloading from RFID I2C Memory?

Hi all,I develop rough environment IoT sensors that are completely potted in polymer epoxies. I use a STM32L432KC MCU inside to drive different sensors and RF radios. My sensors also integrate I2C RFID memories and magnetic switches in order to inter...