def startDose(doseLength, waitTime):
if(shouldDose == True):
doseLock = True
t0 = Utility.currentTimeMillis()
#set dig output pin to start dosing
try:
ik.interfaceKit.setOutputState(0, 1)
except PhidgetException as e:
doseLock = False
ik.interfaceKit.setOutputState(0, 0)
print("Phidget Exception %i: %s" % (e.code, e.details))
print("Exiting....")
exit(1)
print("setting dig output to 1")
# dose until the dose time is met or something else releases the lock
while((Utility.currentTimeMillis() - t0) < timeToDose * 1000 or doseLock != True):
Time.sleep(0.1)
try:
ik.interfaceKit.setOutputState(0, 0)
doseLock = False
print("dosed for %i second out put changed to 0" % (timeToDose))
except PhidgetException as e:
doseLock = False
print("Phidget Exception %i: %s" % (e.code, e.details))
print("Exiting....")
exit(1)
doseLock = False
def updateVars(self, g):
self.time = Utility.currentTimeMillis()
self.currentPh = g.currentPh
self.currentTemp = g.currentTemp
self.doseTime = g.doseTime
self.concentration = g.concentration
self.flowRate = g.flowRate
self.waitTime = g.waitTime
def interfaceKitSensorChanged(self, e):
source = e.device
index = e.index
self.currentTime = Utility.currentTimeMillis()
if(self.firstAttach == False):
self.firstAttach = True
return True
elif(self.calibrationMode == True):
print("calibration mode")
elif(self.calibrationMode == False):
if(index == 1):
self.currentTemp = Utility.calculateTemp(e.value)
print("Temp Sensor %i: Sensor %i: %i" % (source.getSerialNum(), e.index, e.value))
print("Temp = %i " + str(self.currentTemp))
if(index == 0 and self.currentTemp != None):
self.currentPh = Utility.calculatePh(e.value)
print("pH level is " + str(self.currentPh))
# logValues(self, time, phLevel, temp, doseTime, concentration, waitTime):
self.control.updateGlobalVars(self.currentPh, self.currentTemp)
else:
print("No mode was set so I'm gonna do nothing")
return False
def __init__(self):
# Vars
self.minPh = 5.8
self.maxPh = 6.2
self.doseTime = 20
self.currentPh = None
self.currentTemp = None
self.currentTime = Utility.currentTimeMillis()
self.flowRate = 30
# doseLock is to prevent from running two dosing threads at once and can kill the dosing period if ph level is reached
# shouldDose is to initiate dosing
self.doseLock = False
self.shouldDose = False
# calibration mode or logging mode
self.calibrationMode = False
# sampling length in milliseconds
self.phSamplingLength = 10000
self.concentration = 2.5
# dose length in seconds
self.doseLength = 30
# waiting time for propogation in seconds
self.waitTime = 20
# interval for checking ph level in milliseconds
# must be a multiple of 8 I.E. 1,2,4,8,16,24,32,
self.phCheckInterval = 64
# digital output pin index for valveIndex
# temp callibration
# celsius = (analog +20)/(0.2825)
self.celsiusCoefficient = 3.5172
self.celsiusIntercept = 71.6
self.changed = False
self.shutdown = False
def initializeComponents(self):
logFileName = datetime.datetime.fromtimestamp(int(Utility.currentTimeSeconds())).strftime('%Y%m%d:%H:%M:%S') + ".csv"
self.logger = PhLogger(os.path.join(os.path.dirname(__file__), logFileName))
self.loggerThread = LoggerThread(self.logger, threading.Event(), self.g)
self.setupInterfaceKit()
