Lora module SX1278 not getting initialized using Arduino Mega 2560nd Arduino Mega

I and trying to create communication system using Lora module SX1278 but it is showing error in initializing of Lora module... frequency set is 433 MHZ...kindly guide

Please post your code; don't forget to use code tags as described in https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/679966#posting-code-and-common-code-problems.

Please post a scxhematic / wiring diagram how you have connected the module to the Mega.

One common mistake is to use pins 11/12/13 on the Mega for the SPI interface; the SPI pins are not on 11/12/13 on the Mega.

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Yep, you could have problems with your code or wiring.

And since the Mega is 5V logic level and the SX1278 is 3.3V logic level its possible the SX1278 has been damaged already.

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