Index: firmware/App/Drivers/Comm.c
===================================================================
diff -u -r31f710004436c030e787c895980457e08577702d -rf7e3018ec6ab762fe08efb42b21fb2ca970174b0
--- firmware/App/Drivers/Comm.c	(.../Comm.c)	(revision 31f710004436c030e787c895980457e08577702d)
+++ firmware/App/Drivers/Comm.c	(.../Comm.c)	(revision f7e3018ec6ab762fe08efb42b21fb2ca970174b0)
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- *  Copyright (c) 2019-2019 Diality Inc. - All Rights Reserved.
+ *  Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
  *
  *  THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
  *  WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
@@ -26,8 +26,8 @@
 
 // ********** private data **********
 
-static BOOL canXmitsInProgress = FALSE;
-static BOOL uartXmitsInProgress = FALSE;
+static volatile BOOL canXmitsInProgress = FALSE;
+static volatile BOOL uartXmitsInProgress = FALSE;
 
 /*************************************************************************
  * @brief signalCANXmitsInitiated