Dev Team,
Question for you. I've tried implementing a couple examples with migen and
I am running into two consistent problems. I am sure I am just missing
something simple.
One module I am implementing is the Blinker module from your tutorial
document and the other is a popular D Flipflop tutorial that is going
around. Each have a call in the do_simulation method calling s.rd and s.wr
respectivly. I get the following error (with the Blinker module
specifically):
Traceback (most recent call last):
File "Blinker.py", line 27, in <module>
sim.run(200)
File
"/usr/local/lib/python3.3/dist-packages/migen-unknown-py3.3.egg/migen/sim/generic.py",
line 119, in run
s(self)
File
"/usr/local/lib/python3.3/dist-packages/migen-unknown-py3.3.egg/migen/sim/upper.py",
line 101, in do_simulation
simf(proxy)
File "Blinker.py", line 17, in do_simulation
v_led = s.rd(led) # read the current signal value
File
"/usr/local/lib/python3.3/dist-packages/migen-unknown-py3.3.egg/migen/sim/upper.py",
line 40, in __getattr__
return self.__process_get(getattr(self._simproxy_obj, name))
File
"/usr/local/lib/python3.3/dist-packages/migen-unknown-py3.3.egg/migen/fhdl/module.py",
line 135, in __getattr__
raise AttributeError("'"+self.__class__.__name__+"' object has no
attribute '"+name+"'")
AttributeError: 'Blinker' object has no attribute 'rd'
Any idea of what I could be doing wrong? I have attached the two source
files I am using.
Thanks for any help you can provide!
Cheers!
Brian
--
Brian McLaughlin
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from migen.sim.generic import Simulator, TopLevel
from migen.fhdl.std import *
class Blinker(Module):
def __init__(self, led, maxperiod):
counter = Signal(max=maxperiod+1)
period = Signal(max=maxperiod+1)
self.comb += period.eq(maxperiod)
self.sync += If(counter == 0,
led.eq(led),
counter.eq(period)
).Else(
counter.eq(counter - 1)
)
def do_simulation(self, s):
v_led = s.rd(led) # read the current signal value
if v_led != self.v_led_old:
print("{old}->{new} cycle={cycle}".format(
old=self.v_led_old, new=v_led, cycle=s.cycle_counter))
self.v_led_old = v_led
led = Signal()
my_blinker = Blinker(led, 30000000)
sim = Simulator(my_blinker, TopLevel("ledblinker.vcd"))
sim.run(200)from migen.fhdl.std import *
from migen.fhdl import verilog
from migen.sim.generic import Simulator, TopLevel
from random import randrange
class Dflipflop(Module):
def __init__(self, D, Q, Qi):
self.sync += Q.eq(D)
self.comb += Qi.eq(~Q)
def do_simulation(self,s):
s.wr(D,randrange(2))
#Simulation and verilog conversion
D = Signal()
Q = Signal()
Qi = Signal()
#print(verilog.convert(Dflipflop(D, Q, Qi), ios={D,Q,Qi}))
sim = Simulator(Dflipflop(D,Q,Qi), TopLevel("Dff.vcd"))
sim.run(100)_______________________________________________
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