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Pressurize.py
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import RPi.GPIO as GPIO
from time import sleep
from Tkinter import *
import math
import time
import numpy as np
import spidev
from datetime import datetime, timedelta
import sys
#______________________________________________________________________________________________________________________
#----------------------------------------------------------------------------------------------------------------------
#Setting up Spi to read ADC
spi_0 = spidev.SpiDev()
spi_0.open(0, 0)
#Setting up Global Variables
ForwardPumpTarget=15
ForwardFlowCount = 0.0
oldForwardFlowCount= 0.0
BackwashPumpTarget=40
BackwashFlowCount = 0.0
oldBackwashFlowCount= 0.0
StartTime = datetime.now()
samplePeriod = 100
#setting up GPIO pins
ForwardTankValve = 14
ForwardPump = 15
BackwashPump = 18
ForwardPumpValve = 23
BackwashTankValve = 24
BackwashPumpValve = 25
ForwardFlow = 22
BackwashFlow = 17
on = GPIO.LOW
off = GPIO.HIGH
vopen = GPIO.LOW
vclose = GPIO.HIGH
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(ForwardTankValve, GPIO.OUT)
GPIO.setup(ForwardPumpValve, GPIO.OUT)
GPIO.setup(ForwardPump, GPIO.OUT)
GPIO.setup(BackwashTankValve, GPIO.OUT)
GPIO.setup(BackwashPumpValve, GPIO.OUT)
GPIO.setup(BackwashPump, GPIO.OUT)
GPIO.setup(ForwardFlow, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(BackwashFlow, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
#----------------------Function Definitons--------------------------------
def readadc_0(adcnum_0): #this fucntion can be used to find out the ADC value on ADC 0
if adcnum_0 > 7 or adcnum_0 < 0:
return -1
r_0 = spi_0.xfer2([1, 8 + adcnum_0 << 4, 0]) #start bit, Single/Differential mode, Don't care bit OR
adcout_0 = ((r_0[1] & 3) << 8) + r_0[2]
return adcout_0
#-----------------------Gets water into the system-----------------------------#
GPIO.output(ForwardPumpValve, vopen)
GPIO.output(BackwashTankValve, vopen)
GPIO.output(ForwardPump, on)
time.sleep(3)
GPIO.output(ForwardPump,off)
GPIO.output(ForwardPumpValve, vclose)
GPIO.output(BackwashTankValve, vclose)
time.sleep(2)
GPIO.output(ForwardTankValve, vopen)
GPIO.output(BackwashPumpValve, vopen)
GPIO.output(BackwashPump, on)
time.sleep(3)
GPIO.output(BackwashPump, off)
GPIO.output(BackwashPumpValve, vclose)
GPIO.output(ForwardTankValve, vclose)
#-------------------------Pressurize the Tanks---------------------------------#
##GPIO.output(ForwardPumpValve, vopen)
##GPIO.output(BackwashTankValve, vopen)
ForwardPumpActual=round((3.3*float(readadc_0(3)-readadc_0(0))/1023)*100,1)
print ForwardPumpActual
while ForwardPumpActual <15.0:
GPIO.output(ForwardPump,on)
ForwardPumpActual = round((3.3*float(readadc_0(3)-readadc_0(0))/1023)*100,1)
print ForwardPumpActual
##GPIO.output(ForwardPump,off)
##GPIO.output(ForwardPumpValve, vclose)
##GPIO.output(BackwashTankValve, vopen)
##GPIO.output(ForwardTankValve, vopen)
##GPIO.output(BackwashPumpValve, vclose)
BackwashPumpActual=round((3.3*float(readadc_0(1)-readadc_0(0))/1023)*100,1)
print BackwashPumpActual
while BackwashPumpActual <30.0:
GPIO.output(BackwashPump, on)
BackwashPumpActual=round((3.3*float(readadc_0(1)-readadc_0(0))/1023)*100,1)
print BackwashPumpActual
GPIO.output(BackwashPump, off)
GPIO.output(BackwashTankValve, vclose)
GPIO.output(BackwashPumpValve, vclose)
#=======
# Pressureize
##>>>>>>> b868e8014e6ac2537a4b7332ad80cf90e0a7ea41