The Heltec Cubecell HTCC AB0x is Heltec's line of popular ASR605x(ARM® Cortex® M0+ Core) based LoRa development boards with built in USB and battery charging.
Here you will find one or more sample PlatformIO embedded projects designed to transmit LoRaWAN packets using a Heltec CubeCell Developer Board.
For a complete guide to getting started with PlatformIO and the Heltec CubeCell AB0x line of developer boards refer to the Helium documentation set at https://docs.helium.com/network-iot/devices/development/heltec/cubecell-dev-board.