U2C_RESULT U2C_Start(
      HANDLE hDevice
);
The U2C_Start() function generates start condition on the I2C bus.
Parameters:
- hDevice
- Handle to the U2C-12 device. 
Return values:
U2C_SUCCESS
Start condition was successfully generated.
U2C_HARDWARE_NOT_FOUND
U2C-12 device referenced by hDevice handle was not found.