fix: stop blocking when not able to lock

Author: GwnDaan

adafruit_tca9548a.py

@@ -29,6 +29,7 @@
 
 """
 
+import time
 from micropython import const
 
 _DEFAULT_ADDRESS = const(0x70)
@@ -49,6 +50,7 @@ def __init__(self, tca, channel):
     def try_lock(self):
         """Pass through for try_lock."""
         while not self.tca.i2c.try_lock():
+            time.sleep(0)
             pass
         self.tca.i2c.writeto(self.tca.address, self.channel_switch)
         return True