STM32 MCUs Products

STM32L073 PC13 settings are affecting the LSE oscillation.

We are using STM32L073.When a 512Hz square wave is output to PC1 using LPTIM_OUT (source clock LSE), if the calibration output of PC13 is set to 512Hz, the PC1 output will make a large transition to about 509Hz at around -30 ° C. When set to NONE, th...

STM32F446 how to use rotary encoder with timer?

I have an application I am converting from another processor to a STM32F446 board. The application uses a rotary encoder to detect counts and direction.I have looked at several videos online on how to use a timer for rotary encoder purposes. I'm begi...

USART1 doesn't communicate using HSE; worked with HSI

Hello, I am new to the ST platform.I actually work with a nucleo144, and i was trying to work with bluetooth hc-06, the problem is that USART1 doesn't communicate with the board when I use HSE in the clock configuration, but it worked when I use HSII...

Do you know where I can buy 10 STM32H7A3LIH6Q ? Best regards

Timer1 MOE and breakpoints

I am using an STM32F4 micro using TIM1_CH1 and CH2 outputs to create a communications signal with compare outputs. The first bit that I am outputting is wrong, so I would like so set a breakpoint to see what is going on. BUT, when I check the timer c...

Why measured pulse width using TIMER accumulates error as pulse width increases? (understanding inaccuracies in TIMER)

Dear All,Board: Nucleo - H745ZI-QWhat am I trying to do ?I am trying to measure pulse width of an signal using counter mode of timer 2, as accurately as possible. The input pulse width varies from 1 us to 1000 us.What have I done?I configure the Tim...

B-L475E-IOT01A Flash Erase & Write

I want to work on flash with B-L475E-IOT01A1.​After flash erase operation, flash write operation is performed, and memory is being checked through debugging.​On other boards, flash erase operation changed the memory in that location to the "?" mark, ...