STM32 MCUs Products

why x axis data does not come from lis3mdl ?

STM32F407VG Custom Break over UART1 for DMX transmitting

Hi everyone,I am trying to output DMX data over UART1 at 25Hz. Therefore I need a break for 88us. My plan was to take control over the port and set it into GPIO Mode. After 88us I set it back to UART mode. For breaktimes > 250us it works fine. But be...

Function of integer calling in another file skipped partly

Being here just 30 seconds.I have two questions, where the first one is about using a typdef union{} in other files, see my code here  // a.h  typedef union{    float vf;    unsigned char vuc[4];  }fc4;     // a.c  fc4 vfc4a;     // b.c  #include "a....

STM32G474: ADC Offset Compensation really not possible with Hardware Oversampling?

Regarding the ADC, with Gain Compensation, Offset, and Hardware Oversampling:Reference manual (RM0440 Rev 5) page 647 and also page 664 say:"Offset correction is not supported in oversampling mode. When ROVSE and/or JOVSE bit is set, the value of the...

Safely reading a filterred input with an IRQ Handler (input capture mode with input filter)

On an STM32F0 I would like to read a digital signal using the input filter. I configure an input (e.g., TIM1_CH1) in input capture mode and I properly set the input capture filter (IC1F) to remove noise of the input. Also, I need to detect both edges...

enable css?

I dont understand why this is a option for the mux clock selector. css is a great feature so i didnt find reasons to not enabling.In which cases i should not enable it?

External Interrupt functionality confirmation in STM32G4 series MCU.

We are using "STM32G473VET6" in one of our application requiring 7 pins from different ports to be mapped as external interrupt (EXTI) vector. But as per reference manual document "RM0440" section 9.3.8, "All ports have external interrupt capability....

Timer interrupt variation(TIM1) not exactly as configured, and hence PWM switching time variation

TIM1 is configured for complimentary PWM for three phase motor control.PWM switching frequency is 4khz i.e. 250us, but i am finding that PWM time is getting varied from 244us to 248us. sometimes 252us.Is it some calibration issue or what? Can anyone ...

STM32F103C8 What is CNT_INIT in General Purpose Timers?

HiFigure 120 in the reference manual RM0008 shows the control circuit in normal mode. It shows an update event using the Update Generation bit (UG). See attached figure.I am curious about the CNT_INIT bit, which is a pulse one clock cycle after the U...