ArduinoCore-stm32l0 — Arduino Core for Grasshopper LoRaWAN Boards
Arduino core providing native LoRaWAN stack support for CMWX1ZZABZ-based boards including the Grasshopper, enabling sketch development without AT commands via USB programming.
ArduinoCore-stm32l0 — Arduino Core for Grasshopper LoRaWAN Boards
An Arduino board support package by GrumpyOldPizza that enables Arduino IDE development for CMWX1ZZABZ-based LoRaWAN devices, including the Grasshopper development board.
Overview
This Arduino core provides a complete development environment for the STM32L082-based Grasshopper and related boards. It includes a native LoRaWAN stack that communicates directly with the SX1276 radio, eliminating the need for AT commands. Sketches are flashed via USB connector, just like standard Arduino boards.
Supported Boards
- Grasshopper — 18 x 45 mm LoRa/LoRaWAN development board
- LoRaSensorTile — compact environmental sensor tile
- Cricket — asset tracker with GNSS
Key Features
- Native LoRaWAN 1.0.x stack (no AT commands)
- USB bootloader for easy flashing
- Low-power mode support (SLEEP, STOP at 1.6 uA, STANDBY at 500 nA)
- Full GPIO access to all 19 CMWX1ZZABZ pins
- SPI, I2C, UART, ADC, DAC peripheral support
- RTC alarm for timed wake-up from deep sleep
Installation
Add the board manager URL to Arduino IDE preferences, then install the STM32L0 boards package from the Board Manager. Select "Grasshopper" as the target board.
TTN Community
Extensive discussion and support is available on The Things Network forum, where the core was originally announced and community members share projects and troubleshooting tips.
