flow3r v1.4 forward compat bl00mbox fix

utils.py was using unstable APIs that were removed the other day which would result in a crash on most recent dev versions.

utils.py

@@ -62,11 +62,11 @@ def petal_leds(petal, val, color = None):
 
 def blm_wake(app, timeout):
     if not app or not app.loaded: return
-    if app.blm_timeout == 0 and sys_bl00mbox.channel_enable:
-        try:
+    if app.blm_timeout == 0:
+        if hasattr(sys_bl00mbox, "channel_enable"):
             sys_bl00mbox.channel_enable(app.blm.channel_num)
-        except Exception as e:
-            sys.print_exception(e)
+        else:
+            app.blm.foreground = True
     if timeout > app.blm_timeout:
         app.blm_timeout = timeout
 
@@ -76,11 +76,11 @@ def blm_timeout(view, delta_ms):
     if not view.is_active(): return
     if app.blm_timeout == 0: return
     app.blm_timeout -= delta_ms
-    if app.blm_timeout <= 0 and sys_bl00mbox.channel_disable:
-        try:
+    if app.blm_timeout <= 0:
+        if hasattr(sys_bl00mbox, "channel_disable"):
             sys_bl00mbox.channel_disable(app.blm.channel_num)
-        except Exception as e:
-            sys.print_exception(e)
+        else:
+            app.blm.foreground = False
         app.blm_timeout = 0
 
 def play_crunch(app):