STM32 MCUs Products

Create an i2c connection with Raspberry Pi.

Hi everyone. I'm a novice so have patience with me. I have a stm32f103c8 (blue phill) card connected to 8 HC-SR04 ultrasonic sensors. I use the STM32Cube IDE. I already have the program ready to read the distances in all the ultrasonic sensors. Now I...

Fast correlation slower than regular?

Arm_correlate_fast_q31 takes almost twice as much time as arm_correlate_q31.Am i missing something? I measured the calculating time for arm_correlate_q31 for various block sizes and then simply inserted the "fast_" in the function call and it takes a...

Hardware bug STM32F11 in Timer DMA mode (PWM Generation)

I wanted to generate PWM Waveforms with nucleo F411and found a severe bug in the hardware. Maybe it is described in the errata sheet, but I found nothing.bug:DMA is dependent on data send on DMA stream. Sometimes DMA transfer is not done. (DMA circul...

STM32 NUCLEO-F746ZG HSE on-board oscillator from X3 crystal

HiI use STM32 NUCLEO-F746ZG development board for my project. I split the ST-LINK and target STM32 part (Cut PCB). I tried to use HSE on-board oscillator from X3 crystal. I soldered the NX3225GD-8.000MEXS00ACG04874 8-MHz crystal oscillator and two 4....

STM32L412C8 USART2 RX TX pin swap not working

I am using the STM32L412C8 and I am having trouble with the USART2 RX/TX pin swapping. I enabled it in CubeMX but if I send data to the PA2 pin (originally TX but should be RX after the swap) I get nothing. If however I send my data to PA3(should be ...

Hi, I'm designing a board with STM32F417IEH6 using external clock which enters the internal PLL for generating SYSCLK. My question is, what happens when the external clock stops? does the PLL continues to work? does SYSCLK still exists? Thank you,

It seems that using the comparators with interrupts on the stm32f373 series with HAL drivers blocks the program in infinite loop.

I attach the full code as a file and the relevant part here - for the evaluation board STM32373C-EVAL in which the red LED blinks a few times until the comparator is activated and blocks the execution.Is there a workaround to make the comparator work...

Empty check flag on STM32F030 (option bytes)

Hello,I have a problem when flashing my MCU (STM32F030CCT).After flashing, a Power On reset is always needed to start my SW (to reload the option bytes due to the "empty check flag").From manual: On STM32F070x6 and STM32F030xC devices only, internal ...

RM0440 Rev. 2: Number of significant bits in FLASH_WRPxxR apparently wrong.

RM says for both Cat. 2 and Cat. 3 devices all WRPxxR have 7 significant bits, and production values for option bytes starting at 0x1FFF7818 are 0xFF*0*0FFFF.This suggests that bit 7 in WRP_xxR reads '0''.However, actual G431RB has only 6 significant...