tone()?

[matroll]

hello everyone. i can't make the tone() function work on my esp-201.
i tried a few different gpios (2,4,5..), but to no avail.
not sure if this is not working because interupts used for tone() are used somewhere else?
and speaking of gpios, do you know the difference between the pins marked GPIOxx and Dxx in the reference attached? (especially GPIO0 and D0).
thanks!

[Links2004]

there is no implementation for it

Arduino/hardware/esp8266com/esp8266/cores/esp8266/Tone.cpp

Line 38 in ea302aa

static int8_t toneBegin(uint8_t _pin) {

the D pins are properly go to the flash and are not usable.

[matroll]

i see.. work in progress.. hoping someone gets to it :))
thanks for the prompt answer and for the tip about the D pins!

[creationix]

It's not hard to make a basic bit-banging tone. https://github.com/creationix/uscript/blob/master/uscript.c#L660-L668 It's not perfect sound, but it does make different pitched sounds.

[matroll]

thanks creationix

[adrian0]

Hi Creationix,
I wouldn't mind checking out your solution, but the link ends at a 404 for me. Can you repost it?

Thanks,
-Adrian

[creationix]

https://github.com/creationix/uscript/blob/bbb4f4ef144d992903a7748243a2d6ef8434b855/alternative-vms/unix.c#L153-L166

[adrian0]

Thanks Creationix,
You're a champ.

[mralexgray]

any progress on this?

[adrian0]

None from my side. Unfortunately the project I need this for has stalled due to time.
It should kick off again soon. I'll report back asap.

[bjpirt]

I've just submitted a pull request with an implementation of Tone:

#1581

Give it a try and let me know if it works for you.
Cheers,
Ben

[matroll]

hi, thanks for this.
did not work for me though (nodemcu). any pin that needs to be used in particular? (i tried 4 & 5)
thanks.

[bjpirt]

It should work with any pin. I used it on GPIO5 and it worked for me.

Did you check it with a scope or just use a speaker?

[matroll]

thanks ben
no scope unfortunately, straight to a buzzer. i ll give it another try. cheers