STM32 MCUs products

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STM32F4 RTC issue

Hello,We would like to inquire about the abnormal operation of the RTC of STM32F427IIT6 included in our product. Please check the below.Used MCUSTM32F427IIT6BackgroundRTC is used for Log, so it is used very frequentlyIt has been 4 to 5 years since th...

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835238 by Associate II
  • 5 replies
  • 1 kudos

RTC stm32f103

Hi. I need help with RTC on STM32F103. I would like to edit the time (hours and minutes) in my RTC using a button. When I add an hour the maximum vartosc I can reach in the RTC->CNTL register is 65535 (18h20min), when this value is exceeded, the regi...

Resolved! How to edit RTC Alarm parameters

Hi, I use RTC alarm to wake up from STOP mode I have STM32F030C8T6. During initialization I have set 5s and everything works as it should. But I would need to change the interval to maybe 30s while the program is running. The problem is that the chan...

DJeze.1 by Associate II
  • 2 replies
  • 0 kudos

STM32L4 wakes up instantly from low-power sleep

Hi all,I want to measure the power consumption on my board which has a STM32L431CC. Other than the µC, there is nothing left on the board excepted for an RC filter on the NRST pin, I removed the RTC quartz.Inspired by the example code i found, i wrot...

Steven.D by Associate II
  • 2 replies
  • 0 kudos

Resolved! stm32g030f6 rtc vdd/vdda no vbat

Hi, I am planning to use stm32g030f6 and also use RTC peripheral with super cap to keep date. However, this IC does not have VBAT pin. Reading datasheet said, that RTC domain can also be supplied from VDD/VDDA pin, but this means that when a voltage ...

JCuna.1 by Senior
  • 2 replies
  • 1 kudos

STM32WLE RTC AlarmA for wake-up from Standby

Hi , I need  for my applicetion two maner of wake-up from Standby mode. One is regular wake up every one hour and second is asynchronous wake up by external signal. I have used WKUP1 signal on  PA0 input for external wake up. It is working corectly o...

OM by Associate II
  • 1 replies
  • 0 kudos

Resolved! Fastest way to read RTC

I have an app where I timestamp all the data I get from a bunch of external devices.  I'm trying to come up with the fastest way to read the RTC and have 2 approaches, one using snprintf and some LL driver code that's pretty easy to read.  It's not m...

magene by Senior
  • 6 replies
  • 5 kudos

About RTC in sleep mode

We are developing a device that periodically boots in Sleep mode using the STM32G04.Set the WakeUpTime with HAL_RTCEx_SetWakeUpTimer_IT and enter Sleep with HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);.If you make a program to ...

j_m by Associate II
  • 6 replies
  • 1 kudos