Heltec WiFi LoRa 32 V3

hello,
I’m starting my studies with LoRa, I need an example code to monitor gateway signal strength using Heltec Lora 32 v3 hardware.

Communicate with the gateway and use the Lorawan instance

Thanks for the answer, I’ve already tried, without success, my gateway receives requests from other devices, it just doesn’t receive them from mine, I’m already suspicious of a hardware problem.