STM32 MCUs Products

USB stopped connecting to STM32F405.

I have an Adafruit STM32F405 Feather Express. I am compiling / uploading with Arduino IDE V2.1.0 with Windows 11 64. The board worked well for about a week, but no longer connects/shows up as Port 5 of USB. I was successfully connecting and uploading...

Extra bits in SPI Slave DMA

I'm working on a SPI slave right now and found some weird behavior in the peripheral on a STM32g441. The following code is within a GPIO interrupt that's triggered by the CS pin rising. The peripheral clock is 160 MHz and sclk is 1.3 MHz. The spi mod...

how to measure pwm using timer in stm32 using software and without connecting external pins?

How to trigger ADC from TIM1 internally?

Hi All,I am using STM32F410RB chip.I want to make launch adc from timer periodically.From reference manual (RM0401) ADC can be triggered from TIM1_CH1 event.On figure 49 the only connection from TIM1 to ADC is TRGO.And from the same figure this TRGO ...

Distorted measurement ADC

Hi,on STM32F303 I use ADC with DMA (12 bit), I measure signals on 3 channels + Vrefin.The input signal is pure sine wave 50 Hz (I can see it on scope). But when I measure it with ADC, so there is distored sine wave, I tried to change SAMPLING TIME, a...

How to enable on-board temperature sensor on STM32G491

On STM32G491 (and family) MCUs the on-board temperature sensor can be read by ADC1 or ADC5 to provide junction temperature.RM0440 Rev 7 informs us:In order to read the temperature sensor we must "wake" it from power-down mode by setting the VSENSESEL...

I am using STM32G491REI6 Microcontroller. Can we connect Microcontroller ground to the earth to avoid EMI??

Trigger HRTIM capture via SW (i.e. EXTI event)

I use the HAL to setup multiple HRTIM timers on a STM32G4 and I would like to trigger a simultaneous capture across them using software (the reasons for this are complex but it needs to be a simultaneous capture).Currently I have a GPIO output pin lo...