Tone: allow running indefinitely when called without duration

facchinm · facchinm · commit 3ff1ae4297e6 · 2020-04-07T12:27:05.000+02:00
diff --git a/cores/arduino/Tone.cpp b/cores/arduino/Tone.cpp
@@ -22,7 +22,9 @@ class Tone {
 
     void start(void) {
         ticker.attach(mbed::callback(this, &Tone::toggle), 0.5f / float(frequency));
-        start_timeout();
+        if (duration != 0) {
+            start_timeout();
+        }
     }
 
     void toggle() {

Original file line number	Diff line number	Diff line change
`@@ -22,7 +22,9 @@ class Tone {`
`22`	`22`
`23`	`23`	`void start(void) {`
`24`	`24`	`ticker.attach(mbed::callback(this, &Tone::toggle), 0.5f / float(frequency));`
`25`		`- start_timeout();`
	`25`	`+ if (duration != 0) {`
	`26`	`+ start_timeout();`
	`27`	`+ }`
`26`	`28`	`}`
`27`	`29`
`28`	`30`	`void toggle() {`