SPI

The @mb_name@ has @amountspi@ SPI interfaces. They can be found on the extension headers and can be tested with a loopback test.

SPI Overview

Interface linux filesystem

@spi_table@

Loopback Test SPI Interface

For the loopback test you need a bridge between SPI_MOSI and SPI_MISO: 

@spi_bridges@
echo -n -e "\x01\x0F" | spi-pipe -d <spi interface> -s 10000000 | hexdump
(e.g. echo -n -e "\x01\x0F" | spi-pipe -d /dev/spidev1.0 -s 10000000 | hexdump)