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[sx1509] Add interrupt_pin documentation#6433

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sx1509-interrupt-pin
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[sx1509] Add interrupt_pin documentation#6433
bdraco wants to merge 1 commit intonextfrom
sx1509-interrupt-pin

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@bdraco bdraco commented Apr 9, 2026

Description

Document the new interrupt_pin configuration option for the SX1509 GPIO expander.

Related issue (if applicable): N/A

Pull request in esphome with YAML changes (if applicable):

Checklist

  • I am merging into next because this is new documentation that has a matching pull-request in esphome as linked above.
    or

  • I am merging into current because this is a fix, change and/or adjustment in the current documentation and is not for a new component or feature.

  • Link added in /src/content/docs/components/index.mdx when creating new documents for new components or cookbook.

@esphome esphome bot added the next label Apr 9, 2026
@bdraco bdraco marked this pull request as ready for review April 9, 2026 23:32
Copilot AI review requested due to automatic review settings April 9, 2026 23:32
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Pull request overview

Documents the new interrupt_pin option for the SX1509 GPIO expander component, explaining how it changes the component from polling-based to interrupt-driven operation and noting behavior when keypad mode is enabled.

Changes:

  • Adds interrupt_pin to the SX1509 YAML example configuration.
  • Adds configuration reference documentation for interrupt_pin, including electrical requirements (active-low, open-drain, pull-up) and keypad-mode behavior.

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bdraco commented Apr 10, 2026

Closing — corresponding code PR was closed.

@bdraco bdraco closed this Apr 10, 2026
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