util: console: global console lock

Add a lock around the internal `print` call to ensure that multithreaded
applications using the module have clean output.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

src/infuse_iot/util/console.py

@@ -2,6 +2,7 @@
 
 
 import datetime
+import threading
 
 import colorama
 
@@ -10,6 +11,8 @@
 except NotImplementedError:
     pass
 
+_lock = threading.Lock()
+
 
 class Console:
     """Common terminal logging functions"""
@@ -56,7 +59,8 @@ def log_rx(data_type, length, prefix=""):
     def log(timestamp: datetime.datetime, colour, string: str):
         """Log colourised string to terminal"""
         ts = timestamp.strftime("%H:%M:%S.%f")[:-3]
-        print(f"[{ts}]{colour} {string}")
+        with _lock:
+            print(f"[{ts}]{colour} {string}")
 
 
 def choose_one(title: str, options: list[str]) -> tuple[int, str]: