Greetings.
I made a communication using 2 arduino mega and 2 lora. Thanks to the rtc module, I send the time information to the other arduino mega with lora. I also write the time information to the sd card thanks to the sd-cart module.
When the data coming out of the transmitting lora cannot go to the receiving lora, it should give a warning to the screen, and when the data reaches the receiver again, it should rewrite the data packet that cannot be sent from the time of the interruption to this time to the sd cart module. How can I do this writing process. I have Lora e22 version.
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