In Creator ->Find Example Project -> ADC Single ended mode
Connect the VR to GND and Vdda and the wiper to the input pin.
Pay particular attention to the CM range of your signal path
that you use on PSOC. Not all components have a CM range
of rail to rail. If you want R-R then set A/D to bypass buffer, as
shown below. Ignore the "labling" of one of the modes as R-R
mode that does not lead to actual R-R performance, you can
see that in the graphic.
If you are using a -030 board, schematic has Vdd (thru jumper) and Vss connected to
Vr, the wiper comes out and is directly wired to a PSOC pin on the board -
See the docs here -