Implementation of Tone library using timer1

[bjpirt]

I needed to use tones on the ESP so I've made an implementation of this base library. Some notes:

• it uses timer 1
• it only currently supports one pin, though it would be quite simple to support two by using timer 0 but I haven't looked at that yet. (the standard library only supports one pin)
• I've tested it with a logic analyser and the frequency looks good

Let me know if it looks OK to you.
Cheers,
Ben

[pieman64]

Is tone now included in 2.10 release?

Looking at the release it appears it is. I will try to upgrade from 2.1.0-rc2 and see how it goes.

[pieman64]

After changing to 2.1.0 release I still don't have any sound from my 16 ohm passive buzzer.

Tried:

tone(13, 2000, 150); on WeMos D1 Mini but nothing.

The solution at #582 provides sound to the buzzer but not regular tone. Any ideas?

Is this just a WeMos issue or does tone still not work on ESP's?

[pieman64]

OK I have tome working, in a fashion, on WeMos and regular ESP's.

tone(13, 2000, 1000) will send a tone to GPIO 13 (D7) at 2000Hz for 1 second.
Probably due to the way tone uses interrupts (just one at present I believe) I can't call tone for a second time or call noTone(13) followed by tone(13, 2000, 1000) for a second time.

Is there a work around for this so that the buzzer doesn't just play one fairly short tone but rather tone on, tone off, tone on etc?