SPI-PIPE(1)

NAME
spi-pipe - full-duplex SPI communication tool.

SYNOPSIS
spi-pipe options...

DESCRIPTION

This program allows full-duplex communications, sending data from its standard input to the SPI slave, and displaying on its standard output the data received from the SPI port.

-d, --device=DEVICE
    use the given Linux spidev character device.

-b, --blocksize=<int>
    set the block size (in bytes) for transfert.

-n, --number=<int>
    set the number of blocks to transmit (-1 for continuous transfert).

-h, --help
    display the help screen and exit.

-v, --version
    display the version number and exit.

EXAMPLES

Get help:
    $ spi-pipe -h

Send and receive at the same time
    $ command-1 | spi-pipe --device=/dev/spidev0.0 | command-2
    Note that command-1, command-2 and spi-pipe run simultaneously in three different processes.

Send data to the SPI link
    $ command-1 | spi-pipe --device=/dev/spidev0.0

Receive data from the SPI link
    $ spi-pipe --device=/dev/spidev0.0 < /dev/zero | command-2
    You can also use command-2 < /dev/spidev0.0 but with spi-pipe you can control what is sent to the device (always `0` here).

Read 40 blocks of 4 bytes from the SPI link
    $ spi-pipe --device=/dev/spidev0.0 -b 4 -n 40 < /dev/zero | command-2

AUTHOR
Written by Christophe BLAESS <http://www.blaess.fr/christophe>.

REPORTING BUGS
Github home page: <https://github.com/cpb-/spi-tools.git>

COPYRIGHT
Copyright © 2014 Christophe Blaess.
Licensed under GPLv2 <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.