Lora

Hi, 

I am trying to build up a lora communication , created own gateway based on pi and using sx1278 lora module. 

I am able to send sensor data from arduino/esp32 with lora module(sx1278) at raspberry pi(gatgeway) but not able to transmit (downlink) data from pi to node. 

Open for the suggestions and feedback. 

Looking forward for response.