State Machine for SPI Master/Slave Interface

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Thank you for your reply.

I have read the errors and corrected them, the code is compiling.

Do you know how to generate random numbers to inputs and outputs instead if fixed values?

Kind regards,

Deadman

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There are two ways.

1. If you need synthesisable pseudo random number, then google linear feedback shift register (LFSR).

2. For simulation only, the ieee.math_real package has a procedure called "uniform" that generates pseudo random real values between 0.0 and 1.0. You can use these to scale any value you want. For example, a rand_int procedure in my personal testbench tools package:

procedure rand_int( variable seed1, seed2 : inout positive; min, max : in integer; result : out integer) is
        variable rand      : real;
        variable val_range : real;
    begin
        assert (max >= min) report "Rand_int: Range Error" severity Failure;
        
        uniform(seed1, seed2, rand);
        val_range := real(Max - Min + 1);
        result := integer( trunc(rand * val_range )) + min;
    end procedure;