Extended Protocols
==================

SANPO extended protocols add a channel number and data length around raw CAN, CAN FD, or RS485 data. They are intended for one host controlling multiple interfaces and for SPI access from a Jetson, Raspberry Pi, or another host controller.

- To control classic CAN through USB serial, see :doc:`usb_can`.
- To control CAN FD through USB serial, see :doc:`usb_fdcan`.
- To control a selected RS485 channel through USB serial, see :doc:`usb_rs485`.
- To control classic CAN through SPI, see :doc:`spi_can`.
- To control CAN FD through SPI, see :doc:`spi_fdcan`.
- To control RS485 through SPI, see :doc:`spi_rs485`.

.. toctree::
   :maxdepth: 1

   usb_can
   usb_fdcan
   usb_rs485
   spi_can
   spi_fdcan
   spi_rs485