sensType: add sensor types for each activity start/stop

Bug: 28882311
Change-Id: I6b508f36a48e669dc5410e5397e659e28ff4fbe9
diff --git a/firmware/inc/sensType.h b/firmware/inc/sensType.h
index b3adfe6..4fdb177 100644
--- a/firmware/inc/sensType.h
+++ b/firmware/inc/sensType.h
@@ -57,6 +57,19 @@
 // Values 33-37 are reserved
 #define SENS_TYPE_WRIST_TILT      39
 
+// Activity recognition sensor types.
+#define SENS_TYPE_ACTIVITY_IN_VEHICLE_START   40
+#define SENS_TYPE_ACTIVITY_IN_VEHICLE_STOP    41
+#define SENS_TYPE_ACTIVITY_ON_BICYCLE_START   42
+#define SENS_TYPE_ACTIVITY_ON_BICYCLE_STOP    43
+#define SENS_TYPE_ACTIVITY_WALKING_START      44
+#define SENS_TYPE_ACTIVITY_WALKING_STOP       45
+#define SENS_TYPE_ACTIVITY_RUNNING_START      46
+#define SENS_TYPE_ACTIVITY_RUNNING_STOP       47
+#define SENS_TYPE_ACTIVITY_STILL_START        48
+#define SENS_TYPE_ACTIVITY_STILL_STOP         49
+#define SENS_TYPE_ACTIVITY_TILTING            50
+
 #define SENS_TYPE_FIRST_USER      64 // event type necessarily begins with UserSensorEventHdr
 #define SENS_TYPE_LAST_USER       128