pico-lorawan

Enable LoRaWAN communications on your Raspberry Pi Pico or any RP2040 based board using a Semtech SX1276 radio module.

Based on the Semtech's LoRaWAN end-device stack implementation and example projects.

Hardware

• RP2040 board
  • Raspberry Pi Pico
  • Adafruit Feather RP2040
• Semtech SX1276 board
  • Adafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit
  • Adafruit LoRa Radio FeatherWing - RFM95W 900 MHz - RadioFruit

Default Pinout

Raspberry Pi Pico / RP2040	Semtech SX1276
3.3V	VCC
GND	GND
GPIO 18	SCK
GPIO 19	MOSI
GPIO 16	MISO
GPIO 7	DIO0 / G0
GPIO 8	NSS / CS
GPIO 9	RESET
GPIO 10	DIO1 / G1

GPIO pins are configurable in examples or API.

Examples

See examples folder.

There is a config.h file to your ABP or OTAA node configuration for each example.

Cloning

git clone --recurse-submodules https://github.com/sandeepmistry/pico-lorawan.git 

Building

1. Set up the Pico C/C++ SDK
2. Set PICO_SDK_PATH

export PICO_SDK_PATH=/path/to/pico-sdk

3. Create build dir, run cmake and make:

mkdir build
cd build
cmake .. -DPICO_BOARD=pico
make

4. Copy example .uf2 to Pico when in BOOT mode.

Erasing Non-volatile Memory (NVM)

This library uses the last page of flash as non-volatile memory (NVM) storage.

You can erase it using the erase_nvm example, when:

• Changing the devices configuration
• If your board is timing out with joining the network

Acknowledgements

A big thanks to Alasdair Allan for his initial testing of EU868 support!

This project was created on behalf of the Arm Software Developers team, follow them on Twitter: @ArmSoftwareDev and YouTube: Arm Software Developers for more resources!