You can use the header pins on the FX3 Explorer Kit to connect the I2C lines to your OLED display and send commands from FX3 firmware through I2C.
Thanks to inform using pins. I will use pull-up register to connect the device physically.
I want the library of ssd1306 (for fx3 device) so I can program firmware and transfer into SuperSpeed Expolrer kit.
We do not provide separate libraries for the ssd1306. If this supports I2C slave, FX3 should be able to communicate with it. Please refer to I2C example firmware codes in FX3 SDK.