Bare minimum required to drive RFM95

Hi

I've been trying to get this module working but am having some trouble.
I'm not trying to do anything complicated. Just have it exit standby mode (which I assume is the default mode).
Then enter RX mode, and print whatever noise it manages to pick up (Just as a test).

So I'm leaving all values default and just changing the address register values that control the mode of operation which is 0x01 on the RFM95.

Is there anything wrong with my below code?