RTC Alarm B Configuration

[mathiyazhagan]

I am using stm32wle5jc ( LoRa Wio E5 mini board) with stm32wl FW stack. I tried lot ways to implement the RTC Alarm B (in BIN, MIXED and BCD mode). But is stops entire LoRa Process. How I fixed that?

[STTwo-32]

Hello @mathiyazhagan and welcome to the ST Community 

On the Wireless context, the RTC is reserved for the Sub-GHz part of the application. So, if you want to implement an alarm, you may use the HW timer server utility. More details available on the chapter 9.2 of the AN5406.

Best Regards.

STTwo-32

[mathiyazhagan]

Yeah! Timer Utilities are working. But I want Alarm B that runs on real time based alarm tracking ( like Alarm A as Timer utilities and Alarm B for real time and date track ). How configure this without disturbing other processes.?

[mathiyazhagan]

In this wireless context, if I want to implement Alarm B (for independent and specific function) for every 45 second , then how it will be acheived using only Alarm B without using Timer Utility.

[STTwo-32]

As i said before, this is not possible on any wireless context, you can't use the RTC.

STTwo-32

[mathiyazhagan]

Okay understood, Thank you for your response and information !

[mathiyazhagan]

Now, i have used Util Timer but i want to run it synchronous with real time. How it can be done?