test.py

from ironman.constructs.ipbus import IPBusConstruct
from ironman.hardware import HardwareManager, HardwareMap
from ironman.communicator import Jarvis
from ironman.packet import IPBusPacket
from twisted.internet.defer import Deferred
import mmap

hardware_map = '''
nodes:
  -
    id: devmemtest
    address: 0x00000000
    nodes:
      - {id: read, address: 0x0, permissions: 1}
'''

j = Jarvis()
manager = HardwareManager()

manager.add(HardwareMap(hardware_map, 'main'))
j.set_hardware_manager(manager)

@j.register('main')
class DevMemIO(object):
  __f__ = open('/dev/mem', 'r+')

  def read(self, offset, size):
      with mmap.mmap(__f__.fileno(), size, offset=offset) as m:
          return m.readline()

def buildResponsePacket(packet):
    packet.response.transactions[0].header.info_code = 'SUCCESS'
    return IPBusConstruct.build(packet.response)

def printPacket(raw):
    print "raw: {0:s}".format(repr(raw.encode('hex')))
    print IPBusConstruct.parse(raw)

d = Deferred().addCallback(IPBusPacket).addCallback(j).addCallback(buildResponsePacket).addCallback(printPacket)
initialPacket = '200000f02000010f00000002'.decode('hex')
d.callback(initialPacket)