disable homing a automatically

src/pug/templates/control-view.pug

@@ -179,7 +179,7 @@ script#control-view-template(type="text/x-template")
                    @click=`zero('${axis}')`, style="height:60px;width:60px")
                     .fa.fa-map-marker
 
-                  button.pure-button(:disabled="!is_idle", @click=`home('${axis}')`,
+                  button.pure-button(:disabled="!is_idle && axis == 'a'", @click=`home('${axis}')`,
                     title=`Home {{'${axis}' | upper}} axis.`, style="height:60px;width:60px")
                     .fa.fa-home
       

src/py/bbctrl/Mach.py

@@ -276,7 +276,9 @@ class Mach(Comm):
     def home(self, axis, position = None):
         state = self.ctrl.state
 
-        if axis is None: axes = 'zxyabc' # TODO This should be configurable
+        if axis is None:
+            is_rotary_active = state.get('2an', None) == 3 
+            axes = 'zxybc' if is_rotary_active else 'zxyabc' # TODO This should be configurable
         else: axes = '%c' % axis
 
         for axis in axes: