add32.py

import sys

from nmigen import *;
from nmigen.build import *
from nmigen.vendor.lattice_ecp5 import *
from nmigen_boards.resources import *
from nmigen.back import *
from nmigen_boards.versa_ecp5 import *
from nmigen.lib.cdc import FFSynchronizer

from udptherbone.stream import *
from udptherbone.slip import SLIPFramer
from udptherbone.slip import SLIPUnframer
from udptherbone.uart import UARTTx, UARTRx
from udptherbone.udp import *

from runelord.runelord import RunelordECP5Platform

import os
import subprocess
from scapy.all import *

class Add32(Elaboratable):
    def __init__(self, in1, in2, outpins):
        self.in1 = in1
        self.in2 = in2
        self.outpins = outpins

    def elaborate(self, platform):
        m = Module()
                
        reg1 = Signal(32)
        reg1.attrs["keep"] = 1
        reg2 = Signal(32)
        reg2.attrs["keep"] = 1
        m.d.sync += reg1.eq(self.in1)
        m.d.sync += reg2.eq(self.in2)
        m.d.sync += self.outpins.eq(reg1 + reg2)

        return m

class Top(Elaboratable):
    def __init__(self):
        pass
    
    def elaborate(self, platform):
        m = Module()
        
        i1 = Signal(32)
        i2 = Signal(32)
        o = Signal(32)
        
        i1.attrs["keep"] = 1
        i2.attrs["keep"] = 1
        o.attrs["keep"] = 1
        
        m.submodules.add = Add32(i1, i2, o)
        
        return m

if sys.argv[1] == "program":
        RunelordECP5Platform().build(Top(), do_program=False)