From 393ca64d709730b009f50f2a156c4f83932df03a Mon Sep 17 00:00:00 2001
From: tomaszduda23 <tomaszduda23@gmail.com>
Date: Tue, 7 Feb 2023 00:55:35 +0100
Subject: [PATCH] adds gpio INPUT_OUTPUT_OPEN_DRAIN (#4360)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
---
 esphome/pins.py  | 5 +++++
 tests/test1.yaml | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/esphome/pins.py b/esphome/pins.py
index 2b3adce86d..2ac4cd4b54 100644
--- a/esphome/pins.py
+++ b/esphome/pins.py
@@ -49,6 +49,11 @@ def _set_mode(value, default_mode):
             CONF_INPUT: True,
             CONF_PULLDOWN: True,
         },
+        "INPUT_OUTPUT_OPEN_DRAIN": {
+            CONF_INPUT: True,
+            CONF_OUTPUT: True,
+            CONF_OPEN_DRAIN: True,
+        },
     }
     if mode.upper() not in PIN_MODES:
         raise cv.Invalid(f"Unknown pin mode {mode}", [CONF_MODE])
diff --git a/tests/test1.yaml b/tests/test1.yaml
index abbfe8adec..a567c41f2a 100644
--- a/tests/test1.yaml
+++ b/tests/test1.yaml
@@ -1321,6 +1321,11 @@ binary_sensor:
       number: GPIO9
       mode: INPUT_PULLUP
     name: Living Room Window 2
+  - platform: gpio
+    pin:
+      number: GPIO9
+      mode: INPUT_OUTPUT_OPEN_DRAIN
+    name: Living Room Button
   - platform: status
     name: Living Room Status
   - platform: esp32_touch