I2C (Inter Integrated Circuit) I2C aka TWI (Two wire interface).
Any digital IO line can be used as as a I2C interface the VIs from the SDK.
The data is transferred vis 2 FIFOs.
The following Examples included in the SDK can be used as a reference on how to use the VIs:
ZSOM-Control_SmartBattery.lvproj (Read out a smart batteries fuel gauge over the
DIOs ZSOM-Mini_RTC.lvproj (Read and set time and wakeup alarms in the
precise_rtc with wakeup functionality on ZSOM-Mini
ZSOM-Mini_IMU.lvproj (Read heading information from the
9 axes IMU on ZSOM-Mini