Multi-master won't compile on modern Arduino IDE

[TaylorHokanson]

Bookmarking for later, maybe this guy's solution from 2013?

https://michael.bouvy.net/blog/en/2013/05/25/arduino-multi-master-to-master-i2c/

Hmm, with one small adjustment I can get it to compile in modern Arduino for the UNO, but not for the ESP. Error reads:

Wire.onReceive(receiveI2C);
^
exit status 1
'class TwoWire' has no member named 'onReceive'

[TaylorHokanson]

Another possibility: define two i2c busses and use each for uni-directional communication.

espressif/arduino-esp32#977

[TaylorHokanson]

Slave not implemented as of Jan 2017

[TaylorHokanson]

Yet this seems to suggest both master and slave are possible on ESP32

[TaylorHokanson]

Maybe possible on ESP32 but not yet ported to Arduino?

[TaylorHokanson]

i2c slave for 8266

[TaylorHokanson]

Was never resolved, closing for now, working with ESPNow instead.