X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Fplatforms%2Ftmirws%2Fsensors%2FAeroVane.h;h=9c02b5c32d6940129908d19ef357b2237d4e3457;hb=0929af16aa303ba931e5cfa007733f9d6327664e;hp=d7571659bc29e37c1fcd7e488854e3ea003dba41;hpb=7373db28ff8b66edda83925025fbffea6ed88148;p=tinyos-2.x.git

diff --git a/tos/platforms/tmirws/sensors/AeroVane.h b/tos/platforms/tmirws/sensors/AeroVane.h
index d7571659..9c02b5c3 100644
--- a/tos/platforms/tmirws/sensors/AeroVane.h
+++ b/tos/platforms/tmirws/sensors/AeroVane.h
@@ -36,13 +36,13 @@
 #ifndef AEROVANE_H
 #define AEROVANE_H
 
-/* Angular units are in sectors; see AeroVaneC for the number in use.
- * Speed units are in mph.
- */
+enum {
+  AEROVANE_VECTOR_NULL = 65535U, /* Null vector has this value as dir */
+};
 
 typedef struct {
-  uint16_t dir;
-  uint16_t speed;
+  uint16_t dir;		/* Vane position. 0...1023; 360 degrees = 1024 */
+  uint16_t speed;	/* Anemometer revolutions over reading period. */
 } aerovector_t;
 
 typedef struct {