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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
<br />
== Summary ==<br />
The Waveshare SX1262 XXXM LoRaWAN/GNSS HAT is a Raspberry Pi expansion board using the new-generation SX1262 RF chipset. It supports Sub-GHz bands (433/470 MHz or 868/915 MHz), communicates via SPI, and offers an optional GNSS positioning function with GPS/BD support. The board targets developers of LoRaWAN nodes that connect to networks through gateways such as TTN.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL22002 WSAL22002 – SX1262 LoRaWAN Node Module Expansion Board for Raspberry Pi, With Magnetic CB antenna, Options For Frequency Band And GNSS Function]<br />
* [https://shop.jw-tech.eu/p/WSAL24654 WSAL24654 – SX1262 LoRaWAN Node Module Expansion Board for Raspberry Pi, With Magnetic CB antenna, Options For Frequency Band And GNSS Function]<br />
* [https://shop.jw-tech.eu/p/WSAL24655 WSAL24655 – SX1262 LoRaWAN Node Module Expansion Board for Raspberry Pi, With Magnetic CB antenna, Options For Frequency Band And GNSS Function]<br />
* [https://shop.jw-tech.eu/p/WSAL24656 WSAL24656 – SX1262 LoRaWAN Node Module Expansion Board for Raspberry Pi, With Magnetic CB antenna, Options For Frequency Band And GNSS Function]<br />
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== Technical overview ==<br />
* Connects via the standard Raspberry Pi 40-pin GPIO header; communication with the SX1262 uses the SPI bus interface.<br />
* The BUSY pin indicates chip operating state: low means idle and ready, high means busy; register access is only possible during idle.<br />
* The RESET signal must be pulled low for at least 100 µs to restore factory settings; it remains high during normal operation.<br />
* RXEN and TXEN control the RF single-pole switch (SPDT): RXEN low + TXEN high = receive mode; RXEN high + TXEN low = transmit mode.<br />
* TXEN is connected to BCM(6), RXEN is unused by default (-1); DIO2 is directly connected to RXEN and controls the RF switch during transmission.<br />
* DIO1 is typically configured as an interrupt output; DIO3 and GPIO4 are reserved pins per datasheet sections 8.3.2 and 8.5.<br />
* Maximum SPI speed is 18 MHz; register access follows the Opcode + Address + Data pattern per datasheet chapters 8, 10, 11, and 12.<br />
* The GNSS version includes an L76K module with GPS/BD support and a battery holder for ML1220 rechargeable batteries to preserve data during power loss and enable hot starts.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo su<br />
sudo apt remove python3-rpi.gpio<br />
sudo apt install python3-rpi.lgpio<br />
wget https://www.waveshare.net/w/upload/a/a1/Sx126x_lorawan_hat_code.zip<br />
unzip Sx126x_lorawan_hat_code.zip<br />
cd sx126x_lorawan_hat_code/python/lora/<br />
python3 setup.py install<br />
cd examples/SX126x/<br />
python3 transmitter.py<br />
python3 receiver_continuous.py<br />
cd sx126x_lorawan_hat_code/python/lora/examples/network<br />
python3 LoRa_simple_node.py<br />
python3 LoRa_simple_gateway.py<br />
</syntaxhighlight><br />
<br />
== Notes and version constraints ==<br />
* The current version of the SX1262 XXXM LoRaWAN/GNSS HAT has no TTN-related routines; for TTN server communication, the Pico-LoRa-SX1262-XXXM is recommended instead.<br />
* The example programs each require two identical HATs for transmitter/receiver tests; a single module alone is insufficient.<br />
* Firmware modifications (DFU) are not supported; firmware can only be controlled via the demo examples.<br />
* Version-specific steps may vary depending on software version; verify current compatibility before execution.<br />
* The GNSS function requires additional hardware (L76K module) and is only available in the GNSS variant.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/SX1262_XXXM_LoRaWAN/GNSS_HAT SX1262 XXXM LoRaWAN/GNSS HAT - Waveshare Wiki]<br />
* Source revision: 110233<br />
* Captured: 2026-09-03T03:32:16+00:00<br />
* SHA-256: <code>17a4a86a1758e612c2332d5e47895bd03070dd2ee2ab91ad0099c9eccf4923ce</code></div>JWTechPublisher