You've not indicated that you've tried any other sketches. Your best chances of getting your particular code to work, is to start with the tutorials that are provided here:
Read the first post and the jump to post #30 to run the connection check sketch on your UNO.
You should also run the same sketch on your 2560, but using the appropriate SPI pins. Away from my bench so I don't have the pins to hand.
Post the serial output from the tests here so we can confirm that the modules are wired correctly.