From: Benjamin Braatz <benjamin.braatz@graph-it.com>
Date: Wed, 11 Nov 2020 10:17:24 +0000 (+0100)
Subject: Mask in getValues()
X-Git-Url: http://git.graph-it.com/?a=commitdiff_plain;h=f2b7c5216b3fc4c65375ebea1085c331edfcf289;p=graphit%2Fpin-py.git

Mask in getValues()
---

diff --git a/graphit/pin/pcf8574.py b/graphit/pin/pcf8574.py
index 6d54e74..8c98360 100644
--- a/graphit/pin/pcf8574.py
+++ b/graphit/pin/pcf8574.py
@@ -71,7 +71,7 @@ class PCF8574Input(graphit.event.EventEmitterMixin):
         return not bool(self.__values & (1 << pin))
 
     def getValues(self) -> int:
-        return ~self.__values
+        return (~self.__values & 0xFF)
 
 
 class PCF8574Output(graphit.event.EventEmitterMixin):
@@ -106,7 +106,7 @@ class PCF8574Output(graphit.event.EventEmitterMixin):
         return not bool(self.__values & (1 << pin))
 
     def getValues(self) -> int:
-        return ~self.__values
+        return (~self.__values & 0xFF)
 
     def setValue(self, pin: int, value: bool) -> None:
         assert isinstance(pin, int), 'pin must be an integer'