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I have this script where I have connected an ESP-01 to an SSD1306 OLED screen. However, the script I'm using needs adaption for ESP-01 as this module requires the I2C pins to be defined.

So basically I need to add a line that says Wire.begin(2, 0); so make the screen work with the ESP-01.

Whoever, I would love to have a check that is wrapped in a #ifdef so the code will work out of the box with multiple ESP modules without changing the source code.

Is there some way I can check if the module in use is an ESP-01?

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  • you can check with ifdef which board is selected in Tools menu
    – Juraj
    Feb 24, 2021 at 10:45
  • @Juraj As programming the ESP01 requires me to use the Generic 8266 Module option, I guess it's not possible then?
    – rebellion
    Feb 24, 2021 at 11:40
  • try the ARDUINO_BOARD macro, which is different for wemos and nodemcu and esp01, not sure about others...
    – dandavis
    Feb 24, 2021 at 18:06

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