Allow import of PWMOut protocol if pwmio.PWMOut isn't available

Author: tekktrik

adafruit_motor/motor.py

@@ -23,7 +23,12 @@
 try:
     from typing import Optional, Type
     from types import TracebackType
-    from pwmio import PWMOut
+
+    try:
+        from pwmio import PWMOut
+    except NotImplementedError:
+        from circuitpython_typing.pwmio import PWMOut
+
 except ImportError:
     pass
 

adafruit_motor/servo.py

@@ -17,7 +17,11 @@
     from types import TracebackType
 
     # pylint: disable-msg=unused-import
-    from pwmio import PWMOut
+    try:
+        from pwmio import PWMOut
+    except NotImplementedError:
+        from circuitpython_typing.pwmio import PWMOut
+
 except (ImportError, NotImplementedError):
     pass
 

adafruit_motor/stepper.py

@@ -20,8 +20,13 @@
 
 try:
     from typing import Union, Optional
-    from pwmio import PWMOut
     from digitalio import DigitalInOut
+
+    try:
+        from pwmio import PWMOut
+    except NotImplementedError:
+        from circuitpython_typing.pwmio import PWMOut
+
 except ImportError:
     pass