STM32 MCUs Products

We found that the part markings format different from the datasheet. It is normal?

stm32h745 Mcu can work only when boot0 is high

Hi,I am using dual core Stm32h745 mcu. I disabled the semaphore by commentig out. The mcu works after code download and reset with stlink. The mcu is able to restart with NRST pin.My problem is : When I power off the board, that is custom made (not d...

STM32 I2C reading data

Hey guys, i want to stablish communication between LM75 and STM32F030C8T6 model.The I2C bus detect device perfectly, but i have a problem in reading temperature from LM75.Like the datasheet says, if i read the 0x00 register it will return the tempera...

STM32H743ZI2 TIM2 which clock source?

HelloI have configured TIM2 to throw an interrupt every 10 ms. Looking at APB1 Timer clocks clocks in the clock configuration, a prescaler of 199 with AutoReload set to 9999 should call the interrupt every 10ms. In reality the interrupt is called eve...

Error when use printf UART

hi everyoneuse printf in UART, i add in file main.c#include <stdio.h>//--------------#ifdef __GNUC__#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)#else#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)#endif //------------PUTCHAR_PROTOTYPE{ HAL...

Problem trying to compile RTC functionality on STM32F405

Hello,I am trying to get my RTC module working working, I have setup everything using the stm32cubemx, so far all my peripherals are working but I seem to have an issue trying to setup my RTC which is a totally new experience for me using the STM32cu...

Not able to trigger DMA using GPIO input pin in STM32G030K8.

I have to generate a DMA request using GPIO input pin to change the polarity bit of my TIMER which I'm using as PWM(initial polarity is set to HIGH) to LOW which will change by setting the polarity bit to 1. Whenever the GPIO input pin get a rising e...

Hi Team, I am working on stm32f769 board, as i am trying to test sdram. In my project i need to test sdram . Can you please guide me further. In the root terminal, what is the node path. like /dev/i2c[for i2c ]