From: Melissa LeBlanc-Williams <melissa@adafruit.com>
Date: Tue, 14 Jul 2020 20:52:50 +0000 (-0700)
Subject: Fix threading issue that stopped Blinka from working on MicroPython
X-Git-Tag: 5.2.2^2
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/5189fd3e50e82697699bcd138e2116ced10eb5df

Fix threading issue that stopped Blinka from working on MicroPython
---

diff --git a/src/busio.py b/src/busio.py
index 5456f65..279bd46 100755
--- a/src/busio.py
+++ b/src/busio.py
@@ -7,7 +7,10 @@ See `CircuitPython:busio` in CircuitPython for more details.
 * Author(s): cefn
 """
 
-import threading
+try:
+    import threading
+except ImportError:
+    threading = None
 
 import adafruit_platformdetect.constants.boards as ap_board
 import adafruit_platformdetect.constants.chips as ap_chip
@@ -69,8 +72,8 @@ class I2C(Lockable):
                     (scl, sda), i2cPorts
                 )
             )
-
-        self._lock = threading.RLock()
+        if threading is not None:
+            self._lock = threading.RLock()
 
     def deinit(self):
         """Deinitialization"""
@@ -80,11 +83,13 @@ class I2C(Lockable):
             pass
 
     def __enter__(self):
-        self._lock.acquire()
+        if threading is not None:
+            self._lock.acquire()
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):
-        self._lock.release()
+        if threading is not None:
+            self._lock.release()
         self.deinit()
 
     def scan(self):