X-Git-Url: https://git.ayoreis.com/hackapet/Adafruit_Blinka.git/blobdiff_plain/66df9c4b8688960e98e67692074a1d8e4ffb6444..2bb509c5e122b4e0538bd5a87364c3c5a524fc0c:/src/adafruit_blinka/microcontroller/fake_mcp2221/pin.py

diff --git a/src/adafruit_blinka/microcontroller/fake_mcp2221/pin.py b/src/adafruit_blinka/microcontroller/fake_mcp2221/pin.py
index e2cb40f..f4e1b94 100644
--- a/src/adafruit_blinka/microcontroller/fake_mcp2221/pin.py
+++ b/src/adafruit_blinka/microcontroller/fake_mcp2221/pin.py
@@ -21,14 +21,16 @@ class Pin:
     def __init__(self, pin_id=None):
         self.id = pin_id
         self._mode = None
-        self._prv_val = None
+        self._prv_val = False
 
     def init(self, mode=IN, pull=None):
         """Initialize the Pin"""
         if self.id is None:
             raise RuntimeError("Can not init a None type pin.")
         if pull is not None:
-            raise NotImplementedError("Internal pullups and pulldowns not supported on the MCP2221")
+            raise NotImplementedError(
+                "Internal pullups and pulldowns not supported on the MCP2221"
+            )
         if mode in (Pin.IN, Pin.OUT):
             # All pins can do GPIO
             pass
@@ -53,13 +55,8 @@ class Pin:
         if self._mode in (Pin.IN, Pin.OUT):
             # digital read
             if val is None:
-                # The value returned will toggle between True and False
-                # and will be True on the first digital read
-                # TODO: Behavior needs to be tested
-                if self._prv_val == None or False:
-                    self._prv_val = True
-                else:
-                    self._prv_val = False
+                # The returned value toggles between True and false
+                self._prv_val = not self._prv_val
                 return self._prv_val
             # digital write
             if val in (Pin.LOW, Pin.HIGH):
@@ -95,4 +92,4 @@ G2 = Pin(2)
 G3 = Pin(3)
 
 SCL = Pin()
-SDA = Pin()
\ No newline at end of file
+SDA = Pin()