---
name: "spi-pipe"
section: "1"
platform: "linux"
package: "spi-tools"
version: "0.8.4-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/spi-pipe"
---

# spi-pipe(1)

full-duplex SPI communication tool.

## 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 \<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.