Index: Accel.c
===================================================================
diff -u -rc1881f60c442c55ec04b54b8ee9000d2ac9dca8d -r402bbbc95f44a454c013d301c6ca84e95aa2cd4f
--- Accel.c	(.../Accel.c)	(revision c1881f60c442c55ec04b54b8ee9000d2ac9dca8d)
+++ Accel.c	(.../Accel.c)	(revision 402bbbc95f44a454c013d301c6ca84e95aa2cd4f)
@@ -29,16 +29,20 @@
  */
 
 // ********** private definitions **********
-
-#define ACCEL_DATA_PUB_INTERVAL                 ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )      ///< Interval (ms/task time) at which the accelerometer data is published on the CAN bus
-#define SIZE_OF_ROLLING_AVG                     ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )      ///< Vector for tilt is filtered w/ moving average
-#define G_PER_LSB                               ( 0.00390625 )                                  ///< Conversion from counts (LSB) to gravities
-#define NO_NEW_ACCEL_SAMPLES_TIMEOUT            ( 100 / TASK_PRIORITY_INTERVAL )                ///< Maximum time w/o new accelerometer sample from FPGA
+
+/// Interval (ms/task time) at which the accelerometer data is published on the CAN bus
+#define ACCEL_DATA_PUB_INTERVAL                 ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )
+/// Vector for tilt is filtered w/ moving average
+#define SIZE_OF_ROLLING_AVG                     ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )
+#define G_PER_LSB                               ( 0.00390625 )                                  ///< Conversion from counts (LSB) to gravities
+/// Maximum time w/o new accelerometer sample from FPGA
+static const U32 NO_NEW_ACCEL_SAMPLES_TIMEOUT = ( 100 / TASK_PRIORITY_INTERVAL );
 #define NOMINAL_ACCEL_VECTOR_LENGTH             ( 1.0 )                                         ///< Expect unit vector length when system is stable
 #define MAX_ACCEL_VECTOR_LENGTH_ERROR           ( 0.1 )                                         ///< POST test looks at vector length at presumably stable moment - should be 1 +/- 0.1
 #define MAX_TILT_ANGLE                          ( 7.0 )                                         ///< Maximum tilt of system before alarm
-#define MAX_TILT_ANGLE_TO_CLEAR_ALARM           ( 5.0 )                                         ///< Maximum tilt of system before alarm is cleared
-#define MAX_TILT_PERSISTENCE                    ( 1 * MS_PER_SECOND / TASK_PRIORITY_INTERVAL )  ///< Maximum time (in task intervals) that a tilt in excess of limit can persist before alarm
+#define MAX_TILT_ANGLE_TO_CLEAR_ALARM           ( 5.0 )                                         ///< Maximum tilt of system before alarm is cleared
+/// Maximum time (in task intervals) that a tilt in excess of limit can persist before alarm
+static const U32 MAX_TILT_PERSISTENCE         = ( 1 * MS_PER_SECOND / TASK_PRIORITY_INTERVAL );
 #define MAX_SHOCK_ACCELERATION                  ( 5.0 )                                         ///< Maximum shock (acceleration) measured on any axis before alarm
 #define MAX_SHOCK_TO_CLEAR_ALARM                ( 1.0 )                                         ///< Maximum shock (acceleration) measured on any axis in order to clear alarm
 #define MAX_TILT_G                              ( 1.0 )                                         ///< Maximum tilt (in g)