https://github.com/andrewn/status-led

Control an LED to indicate embedded system status
https://github.com/andrewn/status-led

Last synced: 21 days ago
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Control an LED to indicate embedded system status

• Host: GitHub
• URL: https://github.com/andrewn/status-led
• Owner: andrewn
• Created: 2013-12-01T12:48:14.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2013-12-01T12:48:27.000Z (over 12 years ago)
• Last Synced: 2025-03-03T03:28:09.295Z (over 1 year ago)
• Language: Ruby
• Homepage:
• Size: 97.7 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Status LED

===

** This is a first attempt, accepted statuses are hard-coded into the server. **

Uses an RGB LED to indicate status. A set of status names are mapped to various transitions.

Usage

---

The LED itself is managed via a single long-running process. You should specify a path to a socket, the file should not exist.

    $ status-led-server /run/status-led.sock

    Ready to accept

"Ready to accept" indicates that the server has connected to a UNIX socket and is ready to receive messages.

To change the LED status, use the `status-led` command, specifying the same socket path:

    $ status-led /rub/status-led.sock app-running

    State changed to 

The LED should then change to reflect this state.

States

---

A set number of states is configured. Passing in an unrecognised state will return the a state unknown message.

Upstart

---

A set of `upstart` configs in `upstart/`manage the transitions between different statuses. For example, `status-led/app-running` will trigger the `app` status  when the networking service is up and the radiodan-example_master app starts.

The `status-led/server` itself will be started as early as possible in the boot sequence.