This documentation is for Onion firmware v0.3.4 and earlier.
For the latest firmware based on OpenWRT 23.05, visit our new documentation site.

SPI Python Module

To interact with SPI devices, we recommend using Python and the spidev module. The spidev module provides series of functions that implement SPI communication through the Linux device interface. It also provides an Omega2-specific xfer3 function that implements a half-duplex write-then-read SPI transmission.

For more information on installing and using the spidev module, please see the instructions in our python-spidev GitHub repo. See the Installing and Using Python article for more details on using Python with the Omega2.