Skip to main content

Use systemd to configure commands to run when a GPIO button is pressed on a Raspberry Pi

Project description

NAME

systemd-gpio - run commands when a button on a GPIO pin is pressed

DESCRIPTION

Use systemd to configure commands to run when a button attached to a GPIO pin is pressed, released, or held.

To configure a GPIO pin, create a file called /etc/gpio/N, where N is an integer pin number following the gpiozero pin numbering convention. Once you have populated the configuration file, activate the button by running the following command, replacing N with the pin number:

sudo systemctl enable --now gpio@N.service

ENVIRONMENT

GPIO_PULL_UP
GPIO_ACTIVE_STATE
GPIO_BOUNCE_TIME
GPIO_HOLD_TIME
GPIO_HOLD_REPEAT

Button behavior. See the documentation for the corresponding constructor arguments of gpiozero.Button.

GPIO_WHEN_HELD
GPIO_WHEN_PRESSED
GPIO_WHEN_RELEASED

Commands to run when the button is held, pressed, or released, respectively. See the documentation for the corresponding properties of gpiozero.Button.

FILES

/etc/gpio/N

Configuration file for GPIO pin N, where N corresponds to the gpiozero pin numbering. The file should be in the systemd EnvironmentFile syntax and may define any of the environment variables listed above.

HISTORY

This project is inspired by https://github.com/ali1234/systemd-gpio. The main difference is that we are using gpiozero rather than WiringPi, because WiringPi is no longer maintained.

EXAMPLES

The following example configures GPIO 23 so that when it is pressed, it prints a message to all TTYs, and when held, shuts down the machine:

# /etc/gpio/23
GPIO_HOLD_TIME=5
GPIO_WHEN_PRESSED="wall 'Hold the power button for 5 seconds to power off.'"
GPIO_WHEN_HELD=poweroff

To activate the pin, run the following command:

sudo systemctl enable --now gpio@23.service

SEE ALSO

systemctl(1), systemd.exec(5)

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

systemd-gpio-0.1.0.tar.gz (7.9 kB view details)

Uploaded Source

Built Distribution

systemd_gpio-0.1.0-py3-none-any.whl (7.8 kB view details)

Uploaded Python 3

File details

Details for the file systemd-gpio-0.1.0.tar.gz.

File metadata

  • Download URL: systemd-gpio-0.1.0.tar.gz
  • Upload date:
  • Size: 7.9 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/4.0.2 CPython/3.11.7

File hashes

Hashes for systemd-gpio-0.1.0.tar.gz
Algorithm Hash digest
SHA256 cd24b5408aa11ccfdbd90facd0a98928667a6cdf76d789d0355e17cb9aa91c16
MD5 243ea02de354a128ce555da3df7931d7
BLAKE2b-256 6fd64227147c96e4e08dbc159dc0d2161b596c2a95c92c3a16312fec914a2ca8

See more details on using hashes here.

Provenance

File details

Details for the file systemd_gpio-0.1.0-py3-none-any.whl.

File metadata

File hashes

Hashes for systemd_gpio-0.1.0-py3-none-any.whl
Algorithm Hash digest
SHA256 f353da781b3698025b24c11492dce83228e85b8b4aaa6f6c2c33d79d1c519c9d
MD5 953af906896e09f0d1593042ef98a534
BLAKE2b-256 59618c0873456ed162bae112629e97b513aeb1439e614115ecdca086db0aeacf

See more details on using hashes here.

Provenance

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page