Wire: Define WIRE_HAS_TIMEOUT

matthijskooijman · matthijskooijman · commit 5c2ee7ceb1d6 · 2021-04-23T15:53:01.000+02:00
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 arduino#42.
diff --git 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
 {

Original file line number	Diff line number	Diff line change
`@@ -30,6 +30,9 @@`
`30`	`30`
`31`	`31`	`// WIRE_HAS_END means Wire has end()`
`32`	`32`	`#define WIRE_HAS_END 1`
	`33`	`+// WIRE_HAS_TIMEOUT means Wire has setWireTimeout(), getWireTimeoutFlag`
	`34`	`+// and clearWireTimeoutFlag()`
	`35`	`+#define WIRE_HAS_TIMEOUT 1`
`33`	`36`
`34`	`37`	`class TwoWire : public Stream`
`35`	`38`	`{`