booz_drop module update

conf/modules/booz_drop.xml

@@ -1,4 +1,8 @@
 <!DOCTYPE module SYSTEM "module.dtd">
+<!--
+     DROP_SERVO_CLOSED and DROP_SERVO_OPEN can be redefined in airframe file
+     units: PWM width in us
+     -->
 
 <module name="drop">
   <!-- depend require="booz_pwm" -->
@@ -9,8 +13,6 @@
   <periodic fun="booz_drop_periodic()" freq="10."/>
   <makefile>
     <define name="USE_DROP"/>
-    <define name="DROP_SERVO_OPEN" value="2120"/>
-    <define name="DROP_SERVO_CLOSED" value="1060"/>
     <file name="booz_drop.c"/>
   </makefile>
 </module>

conf/settings/settings_booz_drop.xml

@@ -5,8 +5,8 @@
 
     <dl_settings NAME="Drop">
       <dl_setting var="booz_drop_ball" min="0" step="1" max="1" module="drop/booz_drop" values="Closed|Open">
-        <strip_button name="OPEN"  value="1"/>
-        <strip_button name="CLOSE" value="0"/>
+        <strip_button name="OPEN"  value="1" group="drop"/>
+        <strip_button name="CLOSE" value="0" group="drop"/>
       </dl_setting>
     </dl_settings>
 

sw/airborne/modules/drop/booz_drop.h

@@ -33,5 +33,6 @@ extern void booz_drop_init(void);
 extern void booz_drop_periodic(void);
 
 #define NavDropNow() ({ booz_drop_ball = TRUE; FALSE; })
+#define NavDropClose() ({ booz_drop_ball = FALSE; FALSE; })
 
 #endif  /* BOOZ_DROP_H */