another question about the tone library

Projects General Guidance
1

I have generated a sequence of frequencies using the tone library, and a Duemilanove, with the tones each lasting a preset duration.

I want to drive a push pull output stage with the tones, and can use an external inverter for the drives.

What I dont want of course is to leave one output transistors on between tone bursts.

Is it possible to digitalWrite an output that I can get from the tone library while it is running, to use for externally gating the drive?

I have used an "isplaying" signal on a project using the wave SD card player

I have had a look in the tone.ccp file, and there is mention of :-

bool Tone::isPlaying(void)
{
  bool returnvalue = false;

But I havn't actually dug into libraries before, and do not know what the :: are about ....

Even better would be to generate a complementary output only while the tone is playing ( normally zero )

2

T A::B(P) means the function/method M with the paramset P returning the datatype T belongs to class A

bool Tone::isPlaying(void) => function isplaying() with an empty parameterset (thats the void) returns a boolean belongs to class Tone

You need to read a book/website or so about C++ classes and it will be more clear

3

Thanks Rob, I now have something to google when I get a chance.
I am still a beginner but don't get a lot of time to learn, I will sort this one out with external logic for now.