The Second I2C pin for Heltec LoRa V.3

#1

I know the first I2C pins are GPIO17 and GPIO18 which connected to On board OLED. How can I use the Second I2C Pins? Which available GPIO Pins should I define? I am using MicroPython 1.23.0.

Thank you.

#2

OK. I got it.
i2c1 = machine.SoftI2C(scl=machine.Pin(45), sda=machine.Pin(46), freq=20000)