Hi @riztronic
We have fully tested the Arduino code running normally and without a problem!
You can get the newest code here:
https://github.com/m5stack/M5-LoRa-E220/blob/main/examples/P2P_TX_RX/P2P_TX_RX.ino
The test video is here:
https://www.dropbox.com/scl/fi/soim9m8aonp52850p5xqs/361e2e27700890d74db6e65082fd4d05.mov?rlkey=tay4leplto1qlrsl2zt9s549d&st=dff6d295&dl=0
The problem may be that your TX/RX pins are reversed