ESP8266 Community Forum

- Tue Jan 26, 2016 1:09 pm #39753

Thank you for your reply. But I don't see begin() taking GPIO pins in the function prototype. It only takes optional address of the device.
https://www.arduino.cc/en/Reference/WireBegin
Am I missing something?

The ESP uses its own Wire-library ( https://github.com/esp8266/Arduino/blob ... re-library ), which does accept those arguments.

Ah, great. I will try it out.
Thanks.

- Tue Jan 26, 2016 11:26 pm #39799

Thank you for your reply. But I don't see begin() taking GPIO pins in the function prototype. It only takes optional address of the device.
https://www.arduino.cc/en/Reference/WireBegin
Am I missing something?

The ESP uses its own Wire-library ( https://github.com/esp8266/Arduino/blob ... re-library ), which does accept those arguments.

It worked! It worked! It worked! Thank you! Thank you!

I modified the LiquidCrystal_i2c library to use Wire.begin(0,2) and it worked!

I wonder if there is any #define macro for nodemcu or ESP that I could use to selectively call begin. Right now as it stands it is broke for Uno or Mega.

- Wed Jan 27, 2016 9:30 am #39823 Yes, there is ARDUINO_ARCH_ESP8266 and ESP8266

- Wed Jan 27, 2016 10:08 am #39824 Ok great. Will try it out.

Thanks.