ledPin was not declared in this scope, unsure why?

[Ngrace94]

I have recently brought an ESP 32 WROOM, and ive been watching a video by Drone workshop, i copied his blink sketch from the article Getting Started with the ESP32 - Using the Arduino IDE
when i try to upload it the IDE tells me ledPin was not declared in this scope, however I have been staring at this for nearly 10 minutes and it looks fine to me, ill show a print screen here as it is a very short sketch and you can see all the code in one screenshot.

here is the complete error message:

Arduino: 1.8.12 (Windows 10), Board: "ESP32 Dev Module, Disabled, Default 4MB with spiffs (1.2MB APP/1.5MB SPIFFS), 240MHz (WiFi/BT), QIO, 80MHz, 4MB (32Mb), 921600, Core 1, Core 1, None"

<command-line>: error: expected unqualified-id before numeric constant
C:\Users\NicholasNG\Documents\Arduino\Classic_bluetooth_ESP_32\Classic_bluetooth_ESP_32.ino:1:3: note: in expansion of macro 'ESP32'
   ESP32 Blink
   ^~~~~
C:\Users\NicholasNG\Documents\Arduino\Classic_bluetooth_ESP_32\Classic_bluetooth_ESP_32.ino: In function 'void setup()':
Classic_bluetooth_ESP_32:16:13: error: 'ledPin' was not declared in this scope
     pinMode(ledPin, OUTPUT);
             ^~~~~~
C:\Users\NicholasNG\Documents\Arduino\Classic_bluetooth_ESP_32\Classic_bluetooth_ESP_32.ino:16:13: note: suggested alternative: 'lldiv'
     pinMode(ledPin, OUTPUT);
             ^~~~~~
             lldiv
C:\Users\NicholasNG\Documents\Arduino\Classic_bluetooth_ESP_32\Classic_bluetooth_ESP_32.ino: In function 'void loop()':
Classic_bluetooth_ESP_32:25:18: error: 'ledPin' was not declared in this scope
     digitalWrite(ledPin, HIGH);
                  ^~~~~~
C:\Users\NicholasNG\Documents\Arduino\Classic_bluetooth_ESP_32\Classic_bluetooth_ESP_32.ino:25:18: note: suggested alternative: 'lldiv'
     digitalWrite(ledPin, HIGH);
                  ^~~~~~
                  lldiv
exit status 1
'ledPin' was not declared in this scope

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

very odd, under board in tools I use "ESP 32 devmodule" there are also a variety of new setting that appear when using the ESP 32 and ill show an image of my setting here, hopefully its clear.

thanks for the help!

[srnet]

Look at the top of the code, things like esp32-blink are highlighted, so the IDE thinks its code.

[Whandall]

If your screenshot is the whole code, there is something missing.

The starting comment does not have a start, only the end.

I doubt that the compiler is happy with that.

[TomGeorge]

Hi,
I have recommended to the moderators to move your thread to a more appropriate section.

Can you please post your code, rather than screen captures
To add code please click this link;

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Thanks...Tom..

[ep01256]

I'm not 100% sure as i'm not an expert in coding but apart from the comment, can you maybe use #define ledPin 2 or does that not make a difference?

[anon73444976]

@ep01256

can you maybe use #define ledPin 2 or does that not make a difference?

The problem is almost certainly that the code does not start with a /*, but since the OP only posted a picture of part of the code, it's hard to tell.
It is likely that #define wouldn't have worked either.

[TomGeorge]

Hi,
Think we need to know what is going on here first.
Looks like a copy and paste code.

Tom....