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.. _semtech_sx1272mb2das:
Semtech SX1272MB2DAS LoRa Shield
################################
Overview
********
The Semtech SX1272MB2DAS LoRa shield is an Arduino
compatible shield based on the SX1272 LoRa transceiver
from Semtech.
More information about the shield can be found
at the `mbed SX1272MB2xAS website`_.
Pins Assignment of the Semtech SX1272MB2DAS LoRa Shield
=======================================================
+-----------------------+-----------------+
| Shield Connector Pin | Function |
+=======================+=================+
| A0 | SX1272 RESET |
+-----------------------+-----------------+
| D2 | SX1272 DIO0 |
+-----------------------+-----------------+
| D3 | SX1272 DIO1 |
+-----------------------+-----------------+
| D4 | SX1272 DIO2 |
+-----------------------+-----------------+
| D5 | SX1272 DIO3 |
+-----------------------+-----------------+
| D10 | SX1272 SPI NSS |
+-----------------------+-----------------+
| D11 | SX1272 SPI MOSI |
+-----------------------+-----------------+
| D12 | SX1272 SPI MISO |
+-----------------------+-----------------+
| D13 | SX1272 SPI SCK |
+-----------------------+-----------------+
The SX1272 signals DIO4 and DIO5 are not available at the shield connector.
Requirements
************
This shield can only be used with a board which provides a configuration
for Arduino connectors and defines node aliases for SPI and GPIO interfaces
(see :ref:`shields` for more details).
Programming
***********
Set ``-DSHIELD=semtech_sx1272mb2das`` when you invoke ``west build``. For
example:
.. zephyr-app-commands::
:zephyr-app: samples/lorawan/class_a
:board: nucleo_f429zi
:shield: semtech_sx1272mb2das
:goals: build
References
**********
.. target-notes::
.. _mbed SX1272MB2xAS website:
https://os.mbed.com/components/SX1272MB2xAS/