add stubs for tone and noTone

Author: ianfixes

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased]
 ### Added
 - Definition of `LED_BUILTIN`, first reported by `dfrencham` on GitHub
+- Stubs for `tone` and `noTone`, first suggested by `dfrencham` on GitHub
 
 ### Changed
 

cpp/arduino/Godmode.h

@@ -91,6 +91,11 @@ void analogWrite(uint8_t, int);
 #define analogReadResolution(...) _NOP()
 #define analogWriteResolution(...) _NOP()
 
+// TODO: issue #26 to track the commanded state here
+inline void tone(uint8_t _pin, unsigned int frequency, unsigned long duration = 0) {}
+inline void tone(uint8_t _pin, unsigned int frequency) {}
+inline void noTone(uint8_t _pin) {}
+
 
 GodmodeState* GODMODE();