Python Code for Raspberry Pi

RASPBERRY PI PYTHON CODE

import RPi.GPIO as GPIO

import time

import eeml

import os

#Connects to my Xively feed 'Raspberry Pi'

FEED = "1787313445"

API_KEY = "SAo6m7MZnZEPzCrIarFh3fyz3V2UhQ2h4AdDDDNrX5k2ZgF0"

API_URL = '/v2/feeds/{feednum}.xml' .format(feednum = FEED)

DEBUG = 1

LOGGER = 1

#use P1 header pin numbering convention

GPIO.setmode(GPIO.BOARD)

GPIO.setwarnings(False)

#Setting up of the GPIO channels

GPIO.setup(11, GPIO.IN)

GPIO.setup(13, GPIO.IN)

GPIO.setup(15, GPIO.IN)

GPIO.setup(16, GPIO.IN)

GPIO.setup(18, GPIO.IN)

GPIO.setup(19, GPIO.IN)

GPIO.setup(21, GPIO.IN)

GPIO.setup(23, GPIO.IN)

#GPIO.setup(3, GPIO.OUT) - #SC - Ground

GPIO.setup(5, GPIO.OUT) #RD

GPIO.setup(7, GPIO.OUT) #WR

GPIO.setup(8, GPIO.IN) #INTR

#infinite loop

i = 1

while i == 1:

while ( GPIO.input(8) == 1 ) :

# while intr is true

#Clocking of the ADC

time.sleep(0.0002)

GPIO.output(7, GPIO.LOW)

time.sleep(0.0002)

GPIO.output(7, GPIO.HIGH)

time.sleep(0.0002)

GPIO.output(5, GPIO.LOW)

time.sleep(0.0002)

#Inputs the 8-bit digital input

D0 = str(GPIO.input(11))

D0 = int(D0 == "True")

D0 = str(D0)

D1 = str(GPIO.input(13))

D1 = int(D1 == "True")

D1 = str(D1)

D2 = str(GPIO.input(15))

D2 = int(D2 == "True")

D2 = str(D2)

D3 = str(GPIO.input(16))

D3 = int(D3 == "True")

D3 = str(D3)

D4 = str(GPIO.input(18))

D4 = int(D4 == "True")

D4 = str(D4)

D5 = str(GPIO.input(19))

D5 = int(D5 == "True")

D5 = str(D5)

D6 = str(GPIO.input(21))

D6 = int(D6 == "True")

D6 = str(D6)

D7 = str(GPIO.input(23))

D7 = int(D7 == "True")

D7 = str(D7)

Binary_Input = D7+D6+D5+D4+D3+D2+D1+D0

print "Binary = ", Binary_Input

#Binary to decimal conversion

Decimal_input = int( Binary_Input, 2)

print "Decimal = ", Decimal_input

#Convert input into voltage equivalent

Volts = (5.0000 * Decimal_input) / 256.0000

print "Volts = ", Volts

#zero volts relative to the current is 2.5V

zero = (5.0000 * 132.0000) / 256.0000

ZeroVolts = Volts - zero

#Converting from voltage relative to the current to current

Current = ZeroVolts * 9.6000

print "Current = ", Current

#Calculating Apparent Power

power = Current * 230

print "Apparent power = ", power

#Sending data to Xively

if LOGGER:

pac = eeml.Pachube(API_URL, API_KEY)

pac.update([eeml.Data('Current', Current, unit = eeml.Unit('Ampere','basicSI','A'))])

pac.update([eeml.Data('Apparent_Power', power, unit = eeml.Unit('VoltAmpere','derivedSI','VA'))])