title: LoRaWAN OTAA protocol specification
body: <p>I'm trying to implement communication between LoRaWAN and module using RFM95W with STM32L476. The problem I'm facing is that there is no library for dealing with OTAA and I wasn't able to find any relevant source how it looks like or how it works. Now I'm just able to send raw packets. It would be better if I coded the communication myself but I'm ok with working library, thanks</p>
  
  <p>This protocol uses DevEUI AppEUI and AppKey</p>