STM32 MCUs Products

STM32G474RET ADC DMA error after changing SCB->VTOR

I have added a bootloader to my code with 0x4000 size. I added SCB->VTOR = 0x8004000 before memory jump from bootloader to app code and I also added SCB->VTOR = 0x8004000 at the first line in the app code main.c . The memory jump works well. My free...

Modbus TCP Libary for W5100 Shield

Hey,i want to implement a Modbus TCP IP client on my STM32L432KC board.is there a good libary you would recommend me? iam using a W5100 Ehternet shield connnected via SPI.i want to read/write holding registers on the Modbus master..thanks!

SPI HW NSS Incompatibility between STM32H7 and STM32F4

Hello ,I am migrating code from STM32H7 to STM32F4I face the following problems with SPI,1-Hardware output NSS pulses is activated only with HAL_SPI_Init/HAL_SPI_DeInit.2-There should be a pull up on the NSS in order to reach 3.3V and it can't work w...

Information about weird LPTIM compare match behavior. (stm32L462RE)

Datasheet: "Interrupt flag is raised when the content of the Counter register (LPTIM_CNT) matches the content of the compare register (LPTIM_CMP)."Some forums: "Compare match Interrupt flag is raised if CNT >= CMP and not CNT = CMP"(Cf. https://commu...

why i enable the predriver and external interrupt at the same time, the program will enter the external interrupt at the PWM frequency

just comment the code whitch set the pin to enable the predriver device, the interrupt will be normal​, hope your reply, thank you.

hi, i am new to stm32, i am doing a project on fan controller module, i need to measure the powerfactor of zero crossing of my current and voltage waveform displaying on CRO. firstly i need to select two channels for input capture to capture values

on those rising edge with interrupt and i need to count each time.secondly i need to use another timer and set its frequency to 100KHZ with interrupt mode. i need to use counter to count at each interrupt. thirdly based on that counter i need to cal...

STM32H725 ADC3 circular DMA not working? (It does with ADC1)

I've been stumbled upon this issue for a week now.On STM32H725ZG, ADC3 circular DMA is not working.A test codelet below, designed to demonstrate the issue, repeatedly takes 12-bit readings from PC0 (ADC123_INP10) and PC1 (ADC123_INP11) with ADC1 or A...

Hi , I would like to know if there is a way to use DMA to get the TIM1 advanced timer update events ? I can successfully trigger an IRQ but having problems setting a DMA to trigger on every update. I am using STM32 L4 MCU.

I am using the advanced timer TIM1 on STM32L476RG MCU. I have configured the timer in slave reset mode as given in section 30.3.26 of the reference manual. The counter resets every rising edge. I want to use this mode to measure low frequencies such ...

Hi, i would like to know which chip is under name ST A267BB (100 pin case ).