From 87800a3e8a043786f5d4f6be1394537b408be8b4 Mon Sep 17 00:00:00 2001
From: "regicidal.plutophage"
 <36969337+regicidalplutophage@users.noreply.github.com>
Date: Sun, 6 Oct 2024 19:02:59 +0300
Subject: [PATCH 1/4] digital_inout.py: add exceptions when ipol register is
 absent

Fixes #59
---
 adafruit_mcp230xx/digital_inout.py | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/adafruit_mcp230xx/digital_inout.py b/adafruit_mcp230xx/digital_inout.py
index e3b57e2..6d4e3b3 100644
--- a/adafruit_mcp230xx/digital_inout.py
+++ b/adafruit_mcp230xx/digital_inout.py
@@ -145,16 +145,23 @@ def pull(self, val: Pull) -> None:
 
     @property
     def invert_polarity(self) -> bool:
-        """The polarity of the pin, either True for an Inverted or
-        False for an normal.
-        """
-        if _get_bit(self._mcp.ipol, self._pin):
-            return True
-        return False
+        try:
+            """The polarity of the pin, either True for an Inverted or
+            False for an normal.
+            """
+            if _get_bit(self._mcp.ipol, self._pin):
+                return True
+            return False
+        except AttributeError:
+            print("IO expander doesn't support inverting polarity! Continuing...")
+            return False
 
     @invert_polarity.setter
     def invert_polarity(self, val: bool) -> None:
-        if val:
-            self._mcp.ipol = _enable_bit(self._mcp.ipol, self._pin)
-        else:
-            self._mcp.ipol = _clear_bit(self._mcp.ipol, self._pin)
+        try:
+            if val:
+                self._mcp.ipol = _enable_bit(self._mcp.ipol, self._pin)
+            else:
+                self._mcp.ipol = _clear_bit(self._mcp.ipol, self._pin)
+        except AttributeError:
+            print("IO expander doesn't support inverting polarity! Continuing...")

From 85974d9b0ff846ab6faac9b5ca4d767dbf3661a2 Mon Sep 17 00:00:00 2001
From: "regicidal.plutophage"
 <36969337+regicidalplutophage@users.noreply.github.com>
Date: Sun, 6 Oct 2024 19:09:30 +0300
Subject: [PATCH 2/4] Appease pylint

---
 adafruit_mcp230xx/digital_inout.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/adafruit_mcp230xx/digital_inout.py b/adafruit_mcp230xx/digital_inout.py
index 6d4e3b3..a39facd 100644
--- a/adafruit_mcp230xx/digital_inout.py
+++ b/adafruit_mcp230xx/digital_inout.py
@@ -145,10 +145,10 @@ def pull(self, val: Pull) -> None:
 
     @property
     def invert_polarity(self) -> bool:
+        """The polarity of the pin, either True for an Inverted or
+        False for an normal.
+        """
         try:
-            """The polarity of the pin, either True for an Inverted or
-            False for an normal.
-            """
             if _get_bit(self._mcp.ipol, self._pin):
                 return True
             return False

From 824f7ba749386723963c2e435687d1ed21caa51a Mon Sep 17 00:00:00 2001
From: "regicidal.plutophage"
 <36969337+regicidalplutophage@users.noreply.github.com>
Date: Sun, 6 Oct 2024 19:47:38 +0300
Subject: [PATCH 3/4] Update digital_inout.py

---
 adafruit_mcp230xx/digital_inout.py | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/adafruit_mcp230xx/digital_inout.py b/adafruit_mcp230xx/digital_inout.py
index a39facd..4583508 100644
--- a/adafruit_mcp230xx/digital_inout.py
+++ b/adafruit_mcp230xx/digital_inout.py
@@ -153,15 +153,17 @@ def invert_polarity(self) -> bool:
                 return True
             return False
         except AttributeError:
-            print("IO expander doesn't support inverting polarity! Continuing...")
             return False
 
     @invert_polarity.setter
     def invert_polarity(self, val: bool) -> None:
-        try:
-            if val:
+        if val:
+            try:
                 self._mcp.ipol = _enable_bit(self._mcp.ipol, self._pin)
-            else:
+            except AttributeError as error:
+                raise ValueError("Inverted polarity is not supported.") from error
+        else:
+            try:
                 self._mcp.ipol = _clear_bit(self._mcp.ipol, self._pin)
-        except AttributeError:
-            print("IO expander doesn't support inverting polarity! Continuing...")
+            except AttributeError:
+                return

From 2dbe675036d26922e8b57b9edbf692c56ac1241a Mon Sep 17 00:00:00 2001
From: "regicidal.plutophage"
 <36969337+regicidalplutophage@users.noreply.github.com>
Date: Mon, 7 Oct 2024 21:59:12 +0300
Subject: [PATCH 4/4] Add requested changes

---
 adafruit_mcp230xx/digital_inout.py | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/adafruit_mcp230xx/digital_inout.py b/adafruit_mcp230xx/digital_inout.py
index 4583508..17e8dcd 100644
--- a/adafruit_mcp230xx/digital_inout.py
+++ b/adafruit_mcp230xx/digital_inout.py
@@ -148,22 +148,19 @@ def invert_polarity(self) -> bool:
         """The polarity of the pin, either True for an Inverted or
         False for an normal.
         """
-        try:
-            if _get_bit(self._mcp.ipol, self._pin):
-                return True
-            return False
-        except AttributeError:
-            return False
+        if hasattr(self._mcp, "ipol") and _get_bit(self._mcp.ipol, self._pin):
+            return True
+        return False
 
     @invert_polarity.setter
     def invert_polarity(self, val: bool) -> None:
         if val:
-            try:
+            if hasattr(self._mcp, "ipol"):
                 self._mcp.ipol = _enable_bit(self._mcp.ipol, self._pin)
-            except AttributeError as error:
-                raise ValueError("Inverted polarity is not supported.") from error
+            else:
+                raise ValueError("Inverted polarity is not supported.")
         else:
-            try:
+            if hasattr(self._mcp, "ipol"):
                 self._mcp.ipol = _clear_bit(self._mcp.ipol, self._pin)
-            except AttributeError:
+            else:
                 return