STM32 MCUs Products

How to set RTC_PRER in STM32F0xx?

RM0091 rev.9 in 25.7.5 RTC prescaler register (RTC_PRER) says:The initialization must be performed in two separate write accesses. Refer to Calendar initialization and configuration on page 584.However, Calendar initialization and configuration doe...

Is it OK to use the same pin for input capture and trigger?

HiI want to use TIM2_CH1 as the timer_2 input capture and also use this pin to trigger timer 2 to start counting.here is the code I use for configuring it:static void MX_TIM2_Init(void) {   /* USER CODE BEGIN TIM2_Init 0 */   /* USER CODE END TIM...

STMF0 Possible to use both USART2 RX and SYS_SWCLK pins simultaneously?

I would like to be able to use USART2 in RX mode only, but even configuring it as Receive only still takes over the SYS_SWCLK pin (with alternate function USART2 TX). I am never going to use the TX pin, and I'd like to use SYS_SWCLK for flashing and ...

Serial UART design for various size transfers

Hello, I'm writing an application on the STM32F303 Nucleo board that uses the serial UART to receive commands and send responses. I believe example code from the standard peripherals library shows either single byte transfers or fixed size buffer t...

can timer interrupt wakeup STM32 from stop/Sleep mode ?

hello I am using STM32F030F4 microcontroller, question is regarding low power mode. For that i want to wake from stop mode using RTC. As RTC programmable mode is not there in STM32F030F4, So what is the best way to awake from stop mode.

Or any other way in STM32F030F4 microcontroller, to awake from low power mode. and I am using timer in my application.

In my application, I need to awake up with in 2 seconds regular intervals when it goes in stop mode. can you share sample code for RTC's calender and using its internal Alarm A for waking up?

I am using STM32F030F4P6I am just looking for an example code where RTC gives a periodic alarm every 1 second (or any other time period)

DMA RX buffer cache invalidation - BEFORE or AFTER a transfer?

Hi, I have following system:​NUCLEO-F767ZI board (STM32F767ZI)Playing a waveform on DAC1, running it through a magic analog black-box, feeding it back to ADC1. Recording the signal on ADC1, stopping the transfer after one full buffer has been recorde...

BUG in RM0394 Rev 4, regarding timer (TIM2) synchronization.

When trying to synchronize (cascade) timers, specifically wanting TIM1 to provide clock for the TIM2, there is a bug in the reference manual RM0394 Rev 4.The bug is in the recipe in the section 27.3.19, page 857, called Using one timer as prescaler f...