def runGPID():
gPIDInstance = gPID.gPID()
gPIDInstance.ChangeSetPoint(40.0)
while True:
getCFPval = float(GP.getcFP())
next_PV = gPIDInstance.Compute(getCFPval)
print "Present Temp: " + str(getCFPval) + "| nextPV: " + str(next_PV)
GP.HeaterControl(next_PV)
time.sleep(1)
def RunPIDonce(self, measurement_value):
pid_raw = self.pid_control.update(measurement_value)
pid = self.Constrain(pid_raw, 0.0, 100.0)
sys.stdout.flush()
sys.stdout.write("\rPID RAW: %.02f | PID: %.02f | Temperature: %.02f" %
(pid_raw, pid, measurement_value))
if measurement_value >= self.pid_control.set_point + 30.0:
self.stop()
GP.HeaterControl(pid)
def UpdateVars(self):
#Update the temperature variables!
self.TemperatureData.append(GP.getcFP())
self.TemperatureData.pop(0)
self.TrailAvg = np.average(self.TemperatureData[:self.step])
self.LeadAvg = np.average(self.TemperatureData[-self.step:])
#Update Pressure Variable
#self.Pressure = GP.getPressure()
#Call stability check
reactor.callWhenRunning(self.StabilityWrapper)
#get PID Value
PIDValue = self.gPID.Compute(float(self.LeadAvg))
if int(PIDValue) != int(self.PIDVal):
#write PID Value
GP.HeaterControl(PIDValue)
self.PIDVal = PIDValue
def killall():
GP.HeaterControl(0)
reactor.stop()
def stop(self):
GP.HeaterControl(0)
print "Stopped"
sys.exit("Overheat. Stopped.")
