#RP2040 SPI and Verilog SPI module Communication example

1. This is an example of how the RP2040 communicates via SPI to a custom Verilog module.

The Verilog module takes the LSB of the sent byte and sets the bit either 1 or 0 to turn on or off the LED
The Verilog module transmits the number of received messages on every received byte sent by the RP2040.
The Verilog module needs a 10MHz oscilator to oversample the SPI Bus in order to detect rising edges on the bus.
The RP2040 sends bytes in a loop which controll the LED and receives the number of received messages by the slave
and outputs them to the console.