Boards pinout is compatible, code is not. Interfacing PSoC and Arduino can be done using UART or I2C, each board is having its own code. Are you asking whether they can communicate via BLE?
Yes can they communicate via BLE, also are there any sample projects of the same?
I am interested in a master-slave communication between PSoC 4 (I have the CY8CKIT-042 BLE board) and arduino. It doesn't matter if the arduino will be attached on PSoC so I was thinking of a SPI communication with arduino being the master and PSoC the slave.
I haven't written any code untill now, I just wanted to ask if someone has done something similar before. If there something that I should be aware of before beginning writing code.
Should I use a logic level converter when sending and receiving messages between the boards?