A0 is undefined

I have an NODEMCU and installed the chrome extension for espruino - but when I try and run this code:

setInterval(function() {
  console.log(analogRead(A0));
}, 100);

I get this:

in function called from system
23
Uncaught ReferenceError: "A0" is not defined
 at line 1 col 24
console.log(analogRead(A0));

What's going on?

I also get the same problem (adc is undefined) with this code:

print(adc.read(0))

Try analogRead(D0), but I'm not sure anyone has tested the ADC functionality. The docs don't match reality, we need help from Gordon to define the A0 pin for the esp8266...

Ah, that did it, thank you.

@tve is there actually a separate A0 pin, or is it the same as D0? I wouldn't duplicate pin names - that'd just get confusing.

Agreed. If you could add an appropriate definition to the board file that defines an A0 pin, I would appreciate. I tried and failed.

@user59035 is this the board you are using ?
http://www.14core.com/wp-content/uploads/2015/06/Node-MCU-Pin-Out-Diagram1.png

any update on this? I'm getting A0 undefined (v 1.87)

thx
David

@davem - not as far as I know - use analogRead() works fine for me

I think analogRead() ignores the argument you pass to it on the ESP8266... there's only one pin for which analogRead() is meaningful.

1v87.223 Copyright 2016 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xe0 chip 0x4016

NodeMCU v3 + Espruino
analogRead();
Do not working.

1 Attachment