compilation error 'D2' was not declared in this scope

[b3gi]

Hey. I ran into a problem. The program does not allow me to compile my project. An error: 'D2' was not declared in this scope.

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define USE_DISPLAY / <-- uncomment that if you wanna use the display /

include

//include the library you need

include "SSD1306.h"

//#include "SH1106.h"

//button pins

define upBtn D6

define downBtn D7

define selectBtn D5

define buttonDelay 180 //delay in ms

//render settings

define fontSize 8

define rowsPerSite 8

//create display(Adr, SDA-pin, SCL-pin) SSD1306 display(0x3c, D2, D1); //SH1106 display(0x3c, D2, D1);

Error: esp8266_deauther:61: error: 'D2' was not declared in this scope

esp8266_deauther:61: error: 'D1' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino: In function 'void setup()':

esp8266_deauther:49: error: 'D6' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino:377:11: note: in expansion of macro 'upBtn'

esp8266_deauther:50: error: 'D7' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino:378:11: note: in expansion of macro 'downBtn'

esp8266_deauther:51: error: 'D5' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino:379:11: note: in expansion of macro 'selectBtn'

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino: In function 'void loop()':

esp8266_deauther:49: error: 'D6' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino:484:19: note: in expansion of macro 'upBtn'

esp8266_deauther:50: error: 'D7' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino:492:26: note: in expansion of macro 'downBtn'

esp8266_deauther:51: error: 'D5' was not declared in this scope

C:\Users\Григорий\Desktop\esp8266_deauther-master\esp8266_deauther\esp8266_deauther.ino:500:26: note: in expansion of macro 'selectBtn'

In programming, I'm not strong and generally I'm R-RUS, so if there are grammatical errors, forgive me) BYE BYE)

[reivaxy]

Hey,

Try moving #include before the other include instructions.

[reivaxy]

@b3gi any news ?

[per1234]

The cause of this error is that the Dn pin names are only defined for a subset of ESP32 and ESP8266 boards:

ESP32

• IntoRobot Fig
• Microduino-CoreESP32
• u-blox NINA-W10 series (ESP32)
• Widora AIR

ESP8266

• WeMos D1 R2 & mini
• WeMos D1 mini Pro
• Wemos D1 mini Lite
• WeMos D1 R1
• NodeMCU 0.9 (ESP-12 Module)
• NodeMCU 1.0 (ESP-12E Module)
• WifInfo

Compiling the examples with any other board selected will fail.

[FrankenApps]

There is an easy fix though: For ESP32 boards simply replace SSD1306 display(0x3c, D2, D1); with SSD1306 display(0x3c, 21, 22); and change the wiring accordingly...

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[georgedrive]

WeMos D1 R2:

include

//OLED myOLED(D2, D1); OLED myOLED(4, 5);

work

see https://github.com/esp8266/Arduino/blob/master/variants/d1_mini/pins_arduino.h

[moeinrahimi1]

just use pin numbers instead

D0 = GPIO16
D1 = GPIO5
D2 = GPIO4
D3 = GPIO0
D4 = GPIO2
D5 = GPIO14
D6 = GPIO12
D7 = GPIO13
D8 = GPIO15