From 5c2ee7ceb1d6cf876d3663f62d67399d4974ce3c Mon Sep 17 00:00:00 2001
From: Matthijs Kooijman <matthijs@stdin.nl>
Date: Thu, 17 Sep 2020 21:16:56 +0200
Subject: [PATCH] Wire: Define WIRE_HAS_TIMEOUT

In commit deea929 (Introduce non compulsory Wire timeout), some
timeout-related functions were added. To allow writing portable
sketches, it is important for those sketch to know whether they are
using a Wire library version that is new enough to offer these functions
without having to rely on version number checking (since other Arduino
cores have their own versioning schemes).

This adds a WIRE_HAS_TIMEOUT macro, similar to the existing WIRE_HAS_END
macro, to facilitate that.

This relates to #42.
---
 libraries/Wire/src/Wire.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libraries/Wire/src/Wire.h b/libraries/Wire/src/Wire.h
index e70d72edb..c946b0486 100644
--- a/libraries/Wire/src/Wire.h
+++ b/libraries/Wire/src/Wire.h
@@ -30,6 +30,9 @@
 
 // WIRE_HAS_END means Wire has end()
 #define WIRE_HAS_END 1
+// WIRE_HAS_TIMEOUT means Wire has setWireTimeout(), getWireTimeoutFlag
+// and clearWireTimeoutFlag()
+#define WIRE_HAS_TIMEOUT 1
 
 class TwoWire : public Stream
 {