M5Stack LoRa Module (868MHz) v1.2 w/ SMA Antenna

The four DIP switches correspond to the NSS (Slave Select), BUSY, RST (Reset), and IRQ (Interrupt) pins of the SX1262 chip. By default, they are mapped to specific GPIOs on the M5Stack core (e.g., G5, G36, etc.). Refer to the official pinout diagram. To remap a function, set its switch to the ON position, which disconnects the default pin and allows you to connect your own wire from the module's breakout pins to a different GPIO on your host microcontroller, providing full flexibility for complex stack configurations.

Supply a stable 5V DC to the module's VIN pin. To achieve the ultra-low 26.31 µA sleep current, you must properly utilize the chip's sleep modes via software. In your Arduino or UiFlow2 code, after initializing the LoRa library, call the module's dedicated sleep function (often `module.sleep()`). Ensure the host controller also puts the E22-900M22S into its lowest power mode before entering its own deep sleep. Avoid leaving the module in standby (529 µA) when not actively transmitting or receiving to maximize battery life in field deployments.

Yes, the SX1262 chipset is fully compatible with LoRaWAN protocol stacks. You will need to flash a compatible firmware library, such as the MCCI LoRaWAN LMIC library or the Sandeep Mistry Arduino-LoRa library with LoRaWAN extensions, onto your host M5Stack core or Arduino board. Ensure you select the correct regional frequency plan (EU868) in the library configuration. The module handles the physical layer (PHY), while the host microcontroller runs the LoRaWAN MAC layer and application logic, connecting to servers like TTN or ChirpStack via the included SPI interface.