# 'tuple' object has no attribute 'config\_sim'
**URL:** https://discourse.myhdl.org/t/tuple-object-has-no-attribute-config-sim/361
**Category:** Support
**Created:** [February 24, 2019, 1:53pm UTC](https://discourse.myhdl.org/t/tuple-object-has-no-attribute-config-sim/361 "2019-02-24T13:53:02Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@wisdomz](https://discourse.myhdl.org/u/wisdomz)
#### Post date: [February 24, 2019, 1:53pm UTC](https://discourse.myhdl.org/t/tuple-object-has-no-attribute-config-sim/361/1 "2019-02-24T13:53:02Z")
I get the following fir example design from open source
from myhdl import \*
#=[10,11,13,154]
def m\_firfilt(clock, reset, sig\_in, sig\_out, coef):
“”"
“”"
taps = [Signal(intbv(0, min=sig\_in.min, max=sig\_in.max)) for ii in range(len(coef))]
#coef\_data = [Signal(intbv(0, min=sig\_in.min, max=sig\_in.max)) for ii in coef]
```
# @todo: check the coefficients, needs to be the correct type
# could even detect float here, scale and convert to int
coef = tuple(coef)
mshift = len(sig_in)-1
print(mshift)
print(taps)
@always(clock.posedge)
def rtl_sop():
if reset:
for ii in range(len(coef)):
taps[ii].next = 0
sig_out.next = 0
else:
sop = 0
# Note this adds an extra delay! (Group delay N/2+1)
for ii in range(len(coef)):
if ii == 0:
taps[ii].next = sig_in
else:
taps[ii].next = taps[ii-1]
c = coef[ii]
sop = sop + (taps[ii] * c)
sig_out.next = (sop >> mshift)
return rtl_sop
```
#Convert to Verilog
def convert():
clk = Signal(bool(False))
reset = ResetSignal(bool(False), bool(True), async=True)
sig\_in= Signal(intbv(1)[8:])
sig\_out=Signal(intbv(1)[8:])
coef = (12,15,17,18,19,20,-3,-5,23,567,45,234)
toVerilog.timescale = “100ms/1ms”
toVerilog(m\_firfilt, clk, reset, sig\_in,sig\_out,coef)
# convert()
and I learn the other demo , to write the test, but , it always give me some warning. Even I take more time, I have no idea how to handle it, in fact, I want to see what is the fir response. myhdl is very great tools. I try to learn it.
# -_- coding: utf-8 -_-
“”"
Created on Sun Feb 24 16:00:51 2019
/home/wisdom/Documents/pythoncode/myhdl/cfelton-examples/firfilt/firfilt\_testbech.py
@author: wisdom
“”"
import numpy as np;
import matplotlib.pyplot as plt
import cv2;
import math;
from cmath import sin
from numpy.core.numeric import dtype
from scipy.signal import butter, lfilter, freqz
from scipy.fftpack import fft;
from myhdl import \*
from firfilt import m\_firfilt
#m\_firfilt(clock, reset, sig\_in, sig\_out, coef)
# Demonstrate the use of the filter.
# First make some data to be filtered.
fs = 30.0
T = 5 # seconds
n = int(T \* fs) # total number of samples
t = np.linspace(0, T, n, endpoint=False)
# “Noisy” data. We want to recover the 1.2 Hz signal from this.
data = np.sin(1.2_2_np.pi_t) + 1.5_np.cos(9_2_np.pi_t) + 0.5_np.sin(12.0_2_np.pi\*t)
def m\_firfilt\_testbench():
sMax = 2\*\*15; sMin=-1\*sMax
clock = Signal(bool(0))
reset = ResetSignal(0,active = 0, async= True)
sig\_in = Signal(intbv(0, min=sMin, max=sMax))
sig\_out = Signal(intbv(0, min=sMin, max=sMax))
#sig\_in = Signal(intbv(1)[8:])
#sig\_out= Signal(intbv(1)[8:])
coef= [12,15,17,18,19,20,-3,-5,23,567,45,234]
```
dut= m_firfilt(clock,reset,sig_in,sig_out,coef)
HALF_PERIOD = delay(10)
@always(HALF_PERIOD)
def clockGen():
clock.next = not clock
@instance
def stimulus():
reset.next = 1
delay(20)
reset.next = 0
delay(20)
reset.next = 1
for i in range(1000):
sig_in.next=i
yield clock.negedge
raise StopSimulation()
```
# monitor功能非常好用， 可以立即检测是否有些功能正确设计了， 类似于signalTAP
```
@instance
def monitor():
print("sig_in sig_out")
yield reset.posedge
while 1:
yield clock.posedge
yield delay(1)
if sig_in >200 and sig_in<300:
print(" %s %s"%(int(sig_in),int(sig_out)))
return clockGen, stimulus,monitor,dut
```
# tb=m\_firfilt\_testbench() tb.config\_sim(trace=True) tb.run\_sim()
I run it on Ｓｐｙｄｅｒ， ａｎｄ system have the following message.
AttributeError: ‘tuple’ object has no attribute ‘config\_sim’
Thank you
Wisdom
---
### Author:  [@DrPi](https://discourse.myhdl.org/u/DrPi)
#### Post date: [February 25, 2019, 10:08am UTC](https://discourse.myhdl.org/t/tuple-object-has-no-attribute-config-sim/361/2 "2019-02-25T10:08:14Z")
Hi,
Can you please rewrite your message with correct formatting to make it easily readable ?