adds gpio INPUT_OUTPUT_OPEN_DRAIN (#4360)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

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])

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