STM32 MCUs Products

On an stm32L4 When you enable input capture on timer 16 it appears to join pins PB6 and PA6

Ive setup PB6 as a GPIO_Output and Timer 16 and an input capture which uses PA6. It appears that if you set PA6 as an input capture it joins PA6 and PB6 internaly on the trace Chanel 0 is attached to PA6 Channel 2 is attached to PB3 (green LED) and C...

Resolved! STM32H743 double precision FPU process single precision data

Hi，STM32H743 Cortex M7 core with double precision FPU, it process 32bit float data(single precision) in my project, I wonder if it affects efficiency and performance of FPU, In my performance testing program, it's no different from Cortex M4 FUP.Th...

timer 16 interupt not trigering on a stm32L432

Im migrating the code from a stm32L031 to a stm32L432 and the timer interupt isnt triggering Ive set the LED to toggle in the CaptureCallback. This code works on a L031 using timer22. Clearly Im missing something obvious;void HAL_TIM_IC_CaptureCallba...

Resolved! Why is SPI clock baud rate limited to 18Mbit/s?

I'm using the STM32F072RB MCU and I am trying to increase the SPI baud rate. The HSI48 Clock is 48MHz and the minimum SPI clock prescaler is 2 which comes out to be 24Mbit/s. However, it gives me an error stating that the baud rate is more than 18MB...

RTC shifting in stm32L431

Hi,I am using stm32L431 and (32.768KHz ±20ppm 12.5pF 70kΩ) as LSE.Every day the time is update by internet, but in some cases, the clock shifting about 5 minutes.It occur aroung 2 times to week. what is probably happening?Binary data format and Alar...

Wakeup from standby with RTC is causing losing time accuracy

Hello,I am using STM32L073V8T MCU, STM32CubeIDE. My application needs low power consumotion. When some events occurs, MCU move to standby. Than it waits new event for waking up. In other words, my application periodically check new event. After goin...

Resolved! STM32F746 doesn't start up

A STM32F746 on a custom board powered by the step-down regulator TPS62082 by TI doesn't start in about 90% of cases.I flashed (which always works fine) a simple test program, which flashes two LEDs alternately:int main(void) { HAL_Init(); SystemC...