Aaron.Lee
Aaron.Lee
Yes, this library have Class C support. I just updated this library, you can fix the micro definition in the ino file.  Because of this library need a unique...
May be this example make sense to you: [https://github.com/HelTecAutomation/ESP32_LoRaWAN/blob/master/examples/OTAA_LED/OTAA_LED.ino](https://github.com/HelTecAutomation/ESP32_LoRaWAN/blob/master/examples/OTAA_LED/OTAA_LED.ino)
I made a big update this afternoon, please try the newest library.
Make sure you have correctly installed our development framework: [https://docs.heltec.cn/#/en/user_manual/how_to_install_esp32_Arduino](https://docs.heltec.cn/#/en/user_manual/how_to_install_esp32_Arduino)
[https://docs.heltec.cn/#/en/user_manual/lora_maximum_communication_distance_test](https://docs.heltec.cn/#/en/user_manual/lora_maximum_communication_distance_test)
Maybe this topic helps you: [http://community.heltec.cn/t/solved-wifi-lora-32-v2-ttn-joining-trouble/670?u=hunter8801](http://community.heltec.cn/t/solved-wifi-lora-32-v2-ttn-joining-trouble/670?u=hunter8801)
I had just made a big update for this library, please try the newest library. BTW. 
Please try the newest update.
This code contains the downlink processing function, and the downlink information received by the node will be printed out through the serial port.
Thanks for your advice, we will fix it.