From 1eea70aa47ea8f6316a45564276ee950d82d3524 Mon Sep 17 00:00:00 2001
From: Gregg <homespan@icloud.com>
Date: Sun, 6 Dec 2020 15:07:45 -0600
Subject: [PATCH] Update Services.h

Made Characteristic::PositionState **optional** for Service::WindowCovering.  This appears to be a bug/exception in HAP-R2.  Need to reflect this in on-line docs.
---
 src/Services.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Services.h b/src/Services.h
index 3fb7a4f..54f0110 100644
--- a/src/Services.h
+++ b/src/Services.h
@@ -363,9 +363,9 @@ namespace Service {
   }};
 
   struct WindowCovering : SpanService { WindowCovering() : SpanService{"8C","WindowCovering"}{
-    REQ(CurrentPosition);
     REQ(TargetPosition);
-    REQ(PositionState);
+    REQ(CurrentPosition);
+    OPT(PositionState);   
     OPT(Name);
     OPT(HoldPosition);
     OPT(CurrentHorizontalTiltAngle);