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import sys
import os
from xml.etree import ElementTree as ET
class PrcocessNetlist:
"""
This class include all the function required for pre-proccessing of netlist
before converting to Ngspice Netlist.
"""
modelxmlDIR = '../modelParamXML'
def __init__(self):
pass
def readNetlist(self,filename):
f = open(filename)
data=f.read()
f.close()
return data.splitlines()
def readParamInfo(self,kicadNetlis):
"""Read Parameter information and store it into dictionary"""
param={}
for eachline in kicadNetlis:
print eachline
eachline=eachline.strip()
if len(eachline)>1:
words=eachline.split()
option=words[0].lower()
if option=='.param':
for i in range(1, len(words), 1):
paramList=words[i].split('=')
param[paramList[0]]=paramList[1]
return param
def preprocessNetlist(self,kicadNetlis,param):
"""Preprocess netlist (replace parameters)"""
netlist=[]
for eachline in kicadNetlis:
# Remove leading and trailing blanks spaces from line
eachline=eachline.strip()
# Remove special character $
eachline=eachline.replace('$','')
# Replace parameter with values
for subParam in eachline.split():
if '}' in subParam:
key=subParam.split()[0]
key=key.strip('{')
key=key.strip('}')
if key in param:
eachline=eachline.replace('{'+key+'}',param[key])
else:
print "Parameter " + key +" does not exists"
value=raw_input('Enter parameter value: ')
eachline=eachline.replace('{'+key+'}',value)
#Convert netlist into lower case letter
eachline=eachline.lower()
# Construct netlist
if len(eachline)>1:
if eachline[0]=='+':
netlist.append(netlist.pop()+eachline.replace('+',' '))
else:
netlist.append(eachline)
#Copy information line
infoline=netlist[0]
netlist.remove(netlist[0])
return netlist,infoline
def separateNetlistInfo(self,netlist):
optionInfo=[]
schematicInfo=[]
for eachline in netlist:
if eachline[0]=='*':
continue
elif eachline[0]=='.':
optionInfo.append(eachline)
else:
schematicInfo.append(eachline)
return optionInfo,schematicInfo
def insertSpecialSourceParam(self,schematicInfo,sourcelist):
#Inser Special source parameter
schematicInfo1=[]
for compline in schematicInfo:
words=compline.split()
compName=words[0]
# Ask for parameters of source
if compName[0]=='v' or compName=='i':
# Find the index component from circuit
index=schematicInfo.index(compline)
if words[3]=="pulse":
Title="Add parameters for pulse source "+compName
v1=' Enter initial value(Volts/Amps): '
v2=' Enter pulsed value(Volts/Amps): '
td=' Enter delay time (seconds): '
tr=' Enter rise time (seconds): '
tf=' Enter fall time (seconds): '
pw=' Enter pulse width (seconds): '
tp=' Enter period (seconds): '
sourcelist.append([index,compline,words[3],Title,v1,v2,td,tr,tf,pw,tp])
elif words[3]=="sine":
Title="Add parameters for sine source "+compName
vo=' Enter offset value (Volts/Amps): '
va=' Enter amplitude (Volts/Amps): '
freq=' Enter frequency (Hz): '
td=' Enter delay time (seconds): '
theta=' Enter damping factor (1/seconds): '
sourcelist.append([index,compline,words[3],Title,vo,va,freq,td,theta])
elif words[3]=="pwl":
Title="Add parameters for pwl source "+compName
t_v=' Enter in pwl format without bracket i.e t1 v1 t2 v2.... '
sourcelist.append([index,compline,words[3],Title,t_v])
elif words[3]=="ac":
Title="Add parameters for ac source "+compName
v_a=' Enter amplitude (Volts/Amps): '
p_a =' Enter Phase Shift: '
sourcelist.append([index,compline,words[3],Title,v_a,p_a])
elif words[3]=="exp":
Title="Add parameters for exponential source "+compName
v1=' Enter initial value(Volts/Amps): '
v2=' Enter pulsed value(Volts/Amps): '
td1=' Enter rise delay time (seconds): '
tau1=' Enter rise time constant (seconds): '
td2=' Enter fall time (seconds): '
tau2=' Enter fall time constant (seconds): '
sourcelist.append([index,compline,words[3],Title,v1,v2,td1,tau1,td2,tau2])
elif words[3]=="dc":
Title="Add parameters for DC source "+compName
v1=' Enter value(Volts/Amps): '
v2=' Enter zero frequency: '
sourcelist.append([index,compline,words[3],Title,v1,v2])
elif compName[0]=='h' or compName[0]=='f':
# Find the index component from the circuit
index=schematicInfo.index(compline)
schematicInfo.remove(compline)
schematicInfo.insert(index,"* "+compName)
schematicInfo1.append("V"+compName+" "+words[3]+" "+words[4]+" 0")
schematicInfo1.append(compName+" "+words[1]+" "+words[2]+" "+"V"+compName+" "+words[5])
schematicInfo=schematicInfo+schematicInfo1
#print sourcelist
#print schematicInfo
return schematicInfo,sourcelist
def convertICintoBasicBlocks(self,schematicInfo,outputOption,modelList):
#Insert details of Ngspice model
unknownModelList = []
multipleModelList = []
k = 1
for compline in schematicInfo:
words = compline.split()
compName = words[0]
print "Compline----------------->",compline
print "compName-------------->",compName
# Find the IC from schematic
if compName[0]=='u' or compName[0] == 'U':
# Find the component from the circuit
index=schematicInfo.index(compline)
compType=words[len(words)-1];
schematicInfo.remove(compline)
paramDict = {}
#e.g compLine : u1 1 2 gain
#compType : gain
#compName : u1
print "Compline",compline
print "CompType",compType
print "Words",words
print "compName",compName
#Looking if model file is present
if compType != "port" and compType != "ic":
xmlfile = compType+".xml" #XML Model File
count = 0 #Check if model of same name is present
modelPath = []
all_dir = [x[0] for x in os.walk(PrcocessNetlist.modelxmlDIR)]
for each_dir in all_dir:
all_file = os.listdir(each_dir)
if xmlfile in all_file:
count += 1
modelPath.append(os.path.join(each_dir,xmlfile))
if count > 1:
multipleModelList.append(modelPath)
elif count == 0:
unknownModelList.append(compType)
elif count == 1:
try:
print "Start Parsing :",modelPath
tree = ET.parse(modelPath[0])
root = tree.getroot()
#Getting number of nodes for model and title
for child in tree.iter():
if child.tag == 'node_number':
num_of_nodes = int(child.text)
elif child.tag == 'title':
title = child.text+" "+compName
elif child.tag == 'name':
modelname = child.text
elif child.tag == 'type':
#Checking for Analog and Digital
type = child.text
elif child.tag == 'split':
splitDetail = child.text
for param in tree.findall('param'):
for item in param:
#print "Tags ",item.tag
#print "Value",item.text
if 'vector'in item.attrib:
print "Tag having vector attribute",item.tag,item.attrib['vector']
temp_count = 1
temp_list = []
for i in range(0,int(item.attrib['vector'])):
temp_list.append(item.text+" "+str(temp_count))
temp_count += 1
if 'default' in item.attrib:
paramDict[item.tag+":"+item.attrib['default']] = temp_list
else:
paramDict[item.tag] = item.text
else:
if 'default' in item.attrib:
paramDict[item.tag+":"+item.attrib['default']] = item.text
else:
paramDict[item.tag] = item.text
print "Number of Nodes : ",num_of_nodes
print "Title : ",title
print "Parameters",paramDict
#Creating line for adding model line in schematic
if splitDetail == 'None':
modelLine = "a"+str(k)+" "
for i in range(1,num_of_nodes+1):
modelLine += words[i]+" "
modelLine += compName
else:
print "Split Details :",splitDetail
modelLine = "a"+str(k)+" "
vectorDetail = splitDetail.split(':')
print "Vector Details",vectorDetail
pos = 1 #Node position
for item in vectorDetail:
try:
if item.split("-")[1] == 'V':
print "Vector"
modelLine += "["
for i in range(0,int(item.split("-")[0])):
modelLine += words[pos]+" "
pos += 1
modelLine += "] "
elif item.split("-")[1] == 'NV':
print "Non Vector"
for i in range(0,int(item.split("-")[0])):
modelLine += words[pos]+" "
pos += 1
except:
print "There is error while processing Vector Details"
sys.exit(2)
modelLine += compName
print "Final Model Line :",modelLine
try:
schematicInfo.append(modelLine)
k=k+1
except Exception as e:
print "Error while appending ModelLine ",modelLine
print "Exception Message : ",str(e)
#Insert comment at remove line
schematicInfo.insert(index,"* "+compline)
comment = "* Schematic Name: "+compType+", NgSpice Name: "+modelname
#Here instead of adding compType(use for XML), added modelName(Unique Model Name)
modelList.append([index,compline,modelname,compName,comment,title,type,paramDict])
except Exception as e:
print "Unable to parse the model, Please check your your XML file"
print "Exception Message : ",str(e)
sys.exit(2)
elif compType == "ic":
schematicInfo.insert(index,"* "+compline)
modelname = "ic"
comment = "* "+compline
title = "Initial Condition for "+compName
type = "NA" #Its is not model
text = "Enter initial voltage at node for "+compline
paramDict[title] = text
modelList.append([index,compline,modelname,compName,comment,title,type,paramDict])
else:
schematicInfo.insert(index,"* "+compline)
#print "Count",count
#print "UnknownModelList",unknownModelList
#print "MultipleModelList",multipleModelList
return schematicInfo,outputOption,modelList,unknownModelList,multipleModelList
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