Are you using a dev kit or custom board?
Are you using arduino for only PDO/RDO access from ccg2 and nothing else?
Do you plan to scale up this with other controllers after prototyping with arduino?
I am using a custom breakout board for the CCG2 and flashing it with the Mini Prog3.
Correct, the Arduino is just to read the PDO/RDO as they are negotiated. I'm assuming this info is stored somewhere after each negotiation and I can access it .
I would likely scale up with another controller, but right now I just want to prove the concept.
Yes, that information will be stored in the CCG2 registers. But to access this, the external controller will need to use 'Host Processor Interface' specification which makes use of the I2C lines to communicate with CCG2. The HPI specification is Cypress Confidential and you can use it after signing an NDA. You can contact your local distributor/FAE to get this.