[env:tlora-v3-3-0-tcxo]
extends = esp32_base
board = ttgo-lora32-v21
build_flags = 
  ${esp32_base.build_flags}
  -D TLORA_V2_1_16
  -I variants/esp32/tlora_v2_1_16
  -D LORA_TCXO_GPIO=12
  -D BUTTON_PIN=0