94 lines
2.4 KiB
Python
94 lines
2.4 KiB
Python
import math
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import copy
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from litex.soc.interconnect.stream_sim import *
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from liteeth.common import *
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from liteeth.software.etherbone import *
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from test.model import udp
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def print_etherbone(s):
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print_with_prefix(s, "[ETHERBONE]")
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# Etherbone model
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class Etherbone(Module):
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def __init__(self, udp, debug=False):
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self.udp = udp
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self.debug = debug
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self.tx_packets = []
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self.tx_packet = EtherbonePacket()
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self.rx_packet = EtherbonePacket()
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udp.set_etherbone_callback(self.callback)
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def send(self, packet):
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packet.encode()
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if self.debug:
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print_etherbone(">>>>>>>>")
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print_etherbone(packet)
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udp_packet = udp.UDPPacket(packet)
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udp_packet.src_port = 0x1234 # XXX
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udp_packet.dst_port = 20000 # XXX
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udp_packet.length = len(packet)
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udp_packet.checksum = 0
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self.udp.send(udp_packet)
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def receive(self):
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self.rx_packet = EtherbonePacket()
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while not self.rx_packet.done:
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yield
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def callback(self, packet):
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packet = EtherbonePacket(packet)
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packet.decode()
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if self.debug:
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print_etherbone("<<<<<<<<")
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print_etherbone(packet)
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self.rx_packet = packet
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self.rx_packet.done = True
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self.process(packet)
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def process(self, packet):
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pass
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if __name__ == "__main__":
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# Writes/Reads
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writes = EtherboneWrites(base_addr=0x1000, datas=[i for i in range(16)])
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reads = EtherboneReads(base_ret_addr=0x2000, addrs=[i for i in range(16)])
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# Record
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record = EtherboneRecord()
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record.writes = writes
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record.reads = reads
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record.bca = 0
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record.rca = 0
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record.rff = 0
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record.cyc = 0
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record.wca = 0
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record.wff = 0
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record.byte_enable = 0
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record.wcount = len(writes.get_datas())
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record.rcount = len(reads.get_addrs())
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# Packet
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packet = EtherbonePacket()
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packet.records = [deepcopy(record) for i in range(8)]
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packet.nr = 0
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packet.pr = 0
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packet.pf = 0
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# print(packet)
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packet.encode()
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# print(packet)
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# Send packet over UDP to check against Wireshark dissector
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import socket
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.sendto(bytes(packet), ("192.168.1.1", 20000))
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packet = EtherbonePacket(packet)
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packet.decode()
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print(packet)
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