spi-pipe - full-duplex SPI communication tool.

NAME  SYNOPSIS  DESCRIPTION  EXAMPLES  AUTHOR  REPORTING BUGS  COPYRIGHT 

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.

−s, −−speed=<int>

set the target SPI speed for transfer.

−b, −−blocksize=<int>

set the block size (in bytes) for transfer.

−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 <https://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.


Updated 2024-01-29 - jenkler.se | uex.se