1 # RTOS and bare metal options for SAMD21
3 [Zephyr](https://www.zephyrproject.org/]
5 [Zephyr on Feather](https://learn.adafruit.com/blinking-led-with-zephyr-rtos)
7 https://github.com/ataradov/mcu-starter-projects
9 # Referenes on SAMD21 and Feather ecosystem
12 [Zephy / Boards / feather m0](https://docs.zephyrproject.org/latest/boards/arm/adafruit_feather_m0_basic_proto/doc/index.html)
13 - documents the port assignments on the SAMD21 and interconnect on Feather
16 # LoRa, LoRaWAN, and Feather
18 https://github.com/svcguy/lorawanFeather
20 https://github.com/kisom/lora-modem
22 https://github.com/MKme/lora
24 https://github.com/cbleg98/LoRa-High-Altitude-Balloon
26 https://learn.adafruit.com/adafruit-feather-m0-radio-with-lora-radio-module/using-the-rfm-9x-radio