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LoRa Rx callback not working.

HYoo.1
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Hello,

I have a question about the STM LoRa example.

While I was testing the LoRa communication using the b-l072z-lrwan1 board and the I-CUBE-LRWAN example, I found the abnormal behavior.

After the "PHY txDone" message, Rx Callback did not work, the RTC timer was alive, but LoRa did not work anymore.

The action also occurred after the first Tx and 1 hour after and 3 days later.

The settings are as follows.

KR920

OTAA

Class A

public network: private

confirmation: confirmed msg

Tx cycle: 60 seconds

The used version is 3 versions of 1.2.1 / 1.2.3 / 1.3.1.

I found the same behavior in the two versions except 1.2.1.

Payload :  0 ff 4f 
Tx Count : 79
236347s770: PHY txDone
236349s032: PHY rxTimeOut
236350s032: PHY rxTimeOut
236353s454: PHY txDone
236355s636: PHY rxDone
Payload :  0 ff 50 
Tx Count : 80
236357s770: PHY txDone
236359s953: PHY rxDone
Payload :  0 ff 51 
Tx Count : 81
236367s770: PHY txDone
236369s953: PHY rxDone
Payload :  0 ff 52 
Tx Count : 82
236377s770: PHY txDone
236379s953: PHY rxDone
Payload :  0 ff 53 
Tx Count : 83
236387s770: PHY txDone
Payload :  0 ff 54 
Tx Count : 84
Payload :  0 ff 55 
Tx Count : 85
Payload :  0 ff 56 
Tx Count : 86
Payload :  0 ff 57 
Tx Count : 87
Payload :  0 ff 58 
Tx Count : 88

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