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Test2.py
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Test2.py
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from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from twisted.internet import task, defer
import json
import datetime
from ASCIIClientProtocol import ASCIIClientFactory
from HOF3 import *
from PLCObjects import *
from Read import Root
class Test2(Resource):
isLeaf = True
def __init__(self, plc):
self.plc = plc
self.root = Root(plc)
self.counter = 0
self.cv01 = 64
self.delta = 0
self.direction = 1
def processEvent(self, request):
if self.counter == 0:
# Update CV01 position
self.delta += 0.1
self.direction *= -1
self.cv01 += self.delta * self.direction
request.write("\n"+str(self.cv01))
d = self.root.setChild("hof3.pc05.vars.cv",self.cv01)
# Record pressure
self.counter += 1
d = self.root.getChild("hof3.pt02")
def onResult(data):
request.write(","+str(data["hof3"]["pt02"]))
return data
d.addCallback(onResult)
if self.counter >= 30:
self.counter = 0
def render_GET(self, request):
print "Received GET request for Test"
request.setHeader("Content-Type","text/csv");
freq = 1.0 # Repeat every 1 seconds
loop = task.LoopingCall( lambda: self.processEvent(request) )
loop.start(freq)
# Stop the loop if the connection is closed (e.g. by the client)
def stopSending(reason):
if loop.running:
loop.stop()
onFinish = request.notifyFinish()
onFinish.addErrback( stopSending )
onFinish.addCallback( stopSending )
return NOT_DONE_YET