Fix docs not passing if microcontroller is imported

diff --git a/src/microcontroller/__init__.py b/src/microcontroller/__init__.py
index 255e2b71f9258d6e763914b3ea10d03b9d5717a7..86a2d0574511d8248c73c7d74c7e39cb329c4b4d 100755 (executable)
--- a/src/microcontroller/__init__.py
+++ b/src/microcontroller/__init__.py
@@ -1,5 +1,6 @@
 """Microcontroller pins"""
 
+import sys
 import time
 
 from adafruit_platformdetect.constants import chips as ap_chip
@@ -113,5 +114,7 @@ elif chip_id == ap_chip.STM32MP157:
     from adafruit_blinka.microcontroller.stm32.stm32mp157.pin import *
 elif chip_id == ap_chip.MT8167:
     from adafruit_blinka.microcontroller.mt8167.pin import *
+elif "sphinx" in sys.modules:
+    pass
 else:
     raise NotImplementedError("Microcontroller not supported:", chip_id)