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ngodoanvan
Associate III
May 20, 2022
Question

RTC Alarm interrupt not working in lora application

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