mirror of
https://github.com/uhi22/pyPLC.git
synced 2024-11-20 01:13:58 +00:00
feature: convert pcap to values, and show as scope graph
This commit is contained in:
uhi22
parent
123ad659cd
commit
fc2916cf87
2 changed files with 265 additions and 2 deletions
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@ -26,16 +26,26 @@
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import pyshark
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import exiConnector
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import os
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from helpers import combineValueAndMultiplier
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import json
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# The path where the script will search for pcap files:
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directory = '../temp'
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#"EVSEPresentVoltage.Multiplier": "0",
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#"EVSEPresentVoltage.Value": "318",
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#"EVSEPresentVoltage.Unit": "V",
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#"DC_EVStatus.EVRESSSOC": "53",
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def convertPcapToTxt(inputFileName):
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cap = pyshark.FileCapture(inputFileName, display_filter="ipv6")
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fileOut = open(inputFileName + '.decoded.txt', 'w')
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print("# generated by pcapConverter.py", file=fileOut)
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print("# https://github.com/uhi22/pyPLC", file=fileOut)
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fileOutValues = open(inputFileName + '.values.txt', 'w')
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print("# generated by pcapConverter.py", file=fileOutValues)
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print("# https://github.com/uhi22/pyPLC", file=fileOutValues)
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# Example how to access the data:
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#print(cap)
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#print(cap[0])
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@ -58,11 +68,32 @@ def convertPcapToTxt(inputFileName):
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sHeader = "Packet #" + str(numberOfPackets) + " [" + str(packet.sniff_time) + "] " + strExi + " means:"
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pre = "DD" # decode DIN
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decoded=exiConnector.exiDecode(strExi, pre)
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print(sHeader)
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print(decoded)
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#print(sHeader)
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#print(decoded)
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print(sHeader, file=fileOut)
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print(decoded, file=fileOut)
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try:
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y = json.loads(decoded)
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try:
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u = combineValueAndMultiplier(y["EVSEPresentVoltage.Value"], y["EVSEPresentVoltage.Multiplier"])
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print("[" + str(packet.sniff_time) + "] EVSEPresentVoltage=" + str(u), file=fileOutValues)
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i = combineValueAndMultiplier(y["EVSEPresentCurrent.Value"], y["EVSEPresentCurrent.Multiplier"])
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print("[" + str(packet.sniff_time) + "] EVSEPresentCurrent=" + str(i), file=fileOutValues)
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except:
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pass
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try:
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soc = y["DC_EVStatus.EVRESSSOC"]
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print("[" + str(packet.sniff_time) + "] EVRESSSOC=" + str(soc), file=fileOutValues)
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except:
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pass
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except:
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pass
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if ((numberOfPackets % 100)==0):
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print(str(numberOfPackets) + " packets")
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#if (numberOfPackets>=1000):
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# break
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fileOut.close()
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fileOutValues.close()
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# iterate over files in the directory
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232
scope.py
Normal file
232
scope.py
Normal file
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@ -0,0 +1,232 @@
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from tkinter import *
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import time
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import sys # for argv
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root = Tk()
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root.geometry("600x500")
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lastKey = ''
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lblHelp = Label(root, justify= "left")
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lblHelp['text']="press ctrl C to exit"
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lblHelp.pack()
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canvas_width = 590
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canvas_height = 400
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divisionsPerScreen = 10
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c = Canvas(root,
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width=canvas_width,
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height=canvas_height)
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c.pack()
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x0Scope = 10
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y0Scope = 45
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xSizeScope = canvas_width-30
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ySizeScope = canvas_height-50
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# osci background
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c.create_rectangle(x0Scope, y0Scope, x0Scope+xSizeScope, y0Scope+ySizeScope, fill="black")
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# osci divisions
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for i in range(1, divisionsPerScreen):
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dx= i*xSizeScope/divisionsPerScreen
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c.create_line(x0Scope+dx, y0Scope, x0Scope+dx, y0Scope+ySizeScope, fill="#404040")
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dy= i*ySizeScope/divisionsPerScreen
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c.create_line(x0Scope, y0Scope+dy, x0Scope+xSizeScope, y0Scope+dy, fill="#404040")
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# osci outer border
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c.create_line(x0Scope, y0Scope, x0Scope+xSizeScope, y0Scope, fill="#FFFFFF")
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c.create_line(x0Scope, y0Scope, x0Scope, y0Scope+ySizeScope, fill="#FFFFFF")
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c.create_line(x0Scope+xSizeScope, y0Scope+ySizeScope, x0Scope+xSizeScope, y0Scope, fill="#FFFFFF")
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c.create_line(x0Scope+xSizeScope, y0Scope+ySizeScope, x0Scope, y0Scope+ySizeScope, fill="#FFFFFF")
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inputFileName = "../temp/2023-05-11_205813_tcpdump.pcap.values.txt"
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fileIn = open(inputFileName, 'r')
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Lines = fileIn.readlines()
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strCh1Color="#FFFF00" # yellow
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strCh2Color="#10FF10" # green
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strCh3Color="#4040FF" # blue
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strChannelName1=""
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strChannelName2=""
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strChannelName3=""
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ch1values = []
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ch2values = []
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ch3values = []
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count = 0
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for line in Lines:
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count += 1
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p1 = line.find("] ")
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p2 = line.find("=")
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if (p1>0) and (p2>p1+3):
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s = line[p1+2:p2]
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if (strChannelName1==""):
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strChannelName1=s
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else:
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if ((strChannelName2=="") and (s!=strChannelName1)):
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strChannelName2=s
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else:
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if ((strChannelName3=="") and (s!=strChannelName1) and (s!=strChannelName2)):
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strChannelName3=s
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if (s==strChannelName1):
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sVal=line[p2+1:].strip()
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ch1values.append(float(sVal))
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if (s==strChannelName2):
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sVal=line[p2+1:].strip()
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ch2values.append(float(sVal))
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if (s==strChannelName3):
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sVal=line[p2+1:].strip()
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ch3values.append(float(sVal))
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#print("Line{}: {}".format(count, line.strip()))
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fileIn.close()
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vMin=ch1values[0]
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vMax=ch1values[0]
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for v in ch1values:
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#print(v)
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if (v<vMin):
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vMin = v
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if (v>vMax):
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vMax = v
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print("min=" + str(vMin) + ", max=" + str(vMax))
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vDelta = vMax - vMin
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perDiv1 = 1
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if (vDelta/perDiv1>10):
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perDiv1=2
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if (vDelta/perDiv1>10):
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perDiv1=5
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if (vDelta/perDiv1>10):
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perDiv1=10
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if (vDelta/perDiv1>10):
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perDiv1=20
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if (vDelta/perDiv1>10):
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perDiv1=50
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if (vDelta/perDiv1>10):
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perDiv1=100
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print("Scale: " + str(perDiv1) + "/div")
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offs1 = 0
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while ((offs1+perDiv1)<vMin):
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offs1+=perDiv1
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print("Offset: " + str(offs1))
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x = x0Scope
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for v in ch1values:
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yPix = y0Scope+ySizeScope - (v - offs1)/perDiv1 * ySizeScope / divisionsPerScreen
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x1, y1 = ( x - 1 ), ( yPix - 1 )
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x2, y2 = ( x + 1 ), ( yPix + 1 )
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c.create_line(x1, y1, x2, y2, fill=strCh1Color)
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c.create_line(x1, y2, x2, y1, fill=strCh1Color)
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x+=0.035
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vMin=ch2values[0]
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vMax=ch2values[0]
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for v in ch2values:
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#print(v)
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if (v<vMin):
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vMin = v
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if (v>vMax):
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vMax = v
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print("min=" + str(vMin) + ", max=" + str(vMax))
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vDelta = vMax - vMin
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perDiv2 = 1
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if (vDelta/perDiv2>10):
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perDiv2=2
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if (vDelta/perDiv2>10):
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perDiv2=5
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if (vDelta/perDiv2>10):
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perDiv2=10
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if (vDelta/perDiv2>10):
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perDiv2=20
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if (vDelta/perDiv2>10):
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perDiv2=50
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if (vDelta/perDiv2>10):
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perDiv2=100
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print("Scale: " + str(perDiv2) + "/div")
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offs2 = 0
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while ((offs2+perDiv2)<vMin):
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offs2+=perDiv2
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print("Offset: " + str(offs2))
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x = x0Scope
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for v in ch2values:
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yPix = y0Scope+ySizeScope - (v - offs2)/perDiv2 * ySizeScope / divisionsPerScreen
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x1, y1 = ( x - 1 ), ( yPix - 1 )
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x2, y2 = ( x + 1 ), ( yPix + 1 )
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c.create_line(x1, y1, x2, y2, fill=strCh2Color)
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c.create_line(x1, y2, x2, y1, fill=strCh2Color)
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x+=0.035
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vMin=ch3values[0]
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vMax=ch3values[0]
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for v in ch3values:
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#print(v)
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if (v<vMin):
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vMin = v
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if (v>vMax):
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vMax = v
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print("min=" + str(vMin) + ", max=" + str(vMax))
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vDelta = vMax - vMin
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perDiv3 = 1
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if (vDelta/perDiv3>10):
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perDiv3=2
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if (vDelta/perDiv3>10):
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perDiv3=5
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if (vDelta/perDiv3>10):
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perDiv3=10
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if (vDelta/perDiv3>10):
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perDiv3=20
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if (vDelta/perDiv3>10):
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perDiv3=50
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if (vDelta/perDiv3>10):
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perDiv3=100
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print("Scale: " + str(perDiv3) + "/div")
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offs3 = 0
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while ((offs3+perDiv3)<vMin):
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offs3+=perDiv3
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print("Offset: " + str(offs3))
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x = x0Scope
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for v in ch3values:
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yPix = y0Scope+ySizeScope - (v - offs1)/perDiv3 * ySizeScope / divisionsPerScreen
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x1, y1 = ( x - 1 ), ( yPix - 1 )
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x2, y2 = ( x + 1 ), ( yPix + 1 )
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c.create_line(x1, y1, x2, y2, fill=strCh3Color)
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c.create_line(x1, y2, x2, y1, fill=strCh3Color)
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x+=0.035
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y0Legend = 0
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ySizeLegend = 40
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# legend background
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c.create_rectangle(x0Scope, y0Legend, x0Scope+xSizeScope, y0Legend+ySizeLegend, fill="black")
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c.create_text(x0Scope,y0Legend+0, text=strChannelName1, anchor="nw", fill=strCh1Color)
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c.create_text(x0Scope,y0Legend+10, text=str(perDiv1) + "/div", anchor="nw", fill=strCh1Color)
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c.create_text(x0Scope,y0Legend+20, text="Offs " + str(offs1), anchor="nw", fill=strCh1Color)
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c.create_text(x0Scope+150,y0Legend+0, text=strChannelName2, anchor="nw", fill=strCh2Color)
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c.create_text(x0Scope+150,y0Legend+10, text=str(perDiv2) + "/div", anchor="nw", fill=strCh2Color)
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c.create_text(x0Scope+150,y0Legend+20, text="Offs " + str(offs2), anchor="nw", fill=strCh2Color)
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c.create_text(x0Scope+300,y0Legend+0, text=strChannelName3, anchor="nw", fill=strCh3Color)
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c.create_text(x0Scope+300,y0Legend+10, text=str(perDiv3) + "/div", anchor="nw", fill=strCh3Color)
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c.create_text(x0Scope+300,y0Legend+20, text="Offs " + str(offs3), anchor="nw", fill=strCh3Color)
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lastKey = ''
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root.update()
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nMainloops=0
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while lastKey!="x":
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time.sleep(.03) # 'do some calculation'
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nMainloops+=1
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# print(str(nMainloops) + " " + str(nKeystrokes)) # show something in the console window
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root.update()
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