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ngodoanvan
Associate III
May 20, 2022
Question

RTC Alarm interrupt not working in lora application

  • May 20, 2022
  • 2 replies
  • 913 views

Hi, I'm having issues with RTC Alarm in Lora application. My RTC configuration works correctly when I run program configure only RTC. When I use Lora with RTC timer, the alarms not working. I use Sub-GHz Phy PingPong but I want Lora send and receive data while the alarms interrupt issue therefore I configure RTC in CUBEMX as free running BCD calendar mode. Does anyone have any tips what the issue might be? Thanks

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2 replies

GLee.12
Visitor II
September 27, 2022

Did you ever figure this out? I've been investigating trying to use the RTC in the LoRaWAN_EndNode application as well with no luck. Tested with the RTC_Calendar example and the RTC time (seconds, minutes, etc...) counts with no issues in that project so it doesn't seem to be hardware-related...

ngodoanvan
Associate III
September 28, 2022

Hi,

The RTC Alarm A is used to configure Timer Server therefore don't use Alarm A for your purpose. Use Alarm B