The vectors table help you select the correct RTC alarm interrupt. To enable the alarm interrupt, it is necessary to refer to the reference manual. Modify the seconds Alarm value to 1 in the parameter settings to set first Alarm to 1s.Initialize all peripherals with their default settings.Īnswer “Yes” to initialize all peripherals with their default mode? Popup as below:.If the STM32L476 Cube library is not downloaded, it will download automatically. Select NUCLEO-L476RG board using Board Selector as shown in the figure below.In this example the NUCLEO-L476RG board is used. File > New > STM32 Project in main panel.Verify the correct functionality with periodic RTC alarm interrupts that toggle a LED.Configure the LED pin and the RTC alarm interrupts in STM32CubeIDE and generate code.Learn how to setup RTC with interrupt in STM32CubeIDE and how to create a simple RTC project with periodic alarm interrupt. Maskable interrupts/events: Alarm A, Alarm B, Wakeup interrupt, Time-stamp and Tamper detection.Ģ Configure RTC and Alarm with interrupt 2.1 Objectives.Tamper detection event with configurable filter and internal pull-up.Digital calibration circuit (periodic counter correction).Accurate synchronization with an external clock using the subsecond shift feature.Reference clock detection: a more precise second source clock (50 or 60 Hz) can be used to enhance the calendar precision. Automatic wakeup unit generating a periodic flag that triggers an automatic wakeup interrupt.Programmable alarm with interrupt function.Daylight saving compensation programmable by software.Calendar with subseconds, seconds, minutes, hours, day, date of day in month, month and year.For STM32L476, main RTC features are the following: In addition, the RTC can provide an automatic wakeup to manage all low-power modes. The RTC provides a time-of-day clock/calendar with programmable alarm interrupt. 2 Configure RTC and Alarm with interruptĪ RTC is an independent binary-coded decimal (BCD) timer/counter.
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