def addFlowmeter(self, number):
outputNumber = 1 if (number % 2) else 0
fm = flowmeter.Flowmeter("flow" + str(outputNumber),
"keg" + str(number))
self.flowmeters.append(fm)
config.printMessage("> Flowmeter '" + fm.name + "' (on device '" +
self.device + "') added for '" + fm.kegId + "'")
def process(self):
config.printMessage("> Processing Message ID of " +
str(self.messageId.encode('hex')))
if (self.messageId.encode('hex') == "0010"):
self.processMeterReading()
elif (self.messageId.encode('hex') == "0001"):
self.processHelloMessage()
else:
config.printMessage(
"Error: Not able to process unrecognized message_id")
self.processFooter()
def __init__(self, device, baudrate):
config.printMessage("############################")
config.printMessage("# INITIALIZING SERIAL PORT #")
config.printMessage("############################")
self.device = device
self.baudrate = baudrate
self.initialize()
config.printMessage("> Finished Initializing Serial Port\n")
def __init__(self, serial, messageId, payloadLength):
config.printMessage("############################################")
config.printMessage("# BEGIN PROCESSING KEGOMATE SERIAL MESSAGE #")
config.printMessage("############################################")
self.serial = serial
self.messageId = messageId
self.payloadLength = payloadLength
self.process()
config.printMessage("> Finished Processing Message\n")
def initializeSerialPorts():
global mainLoopFlag
global serialPorts
global flowmeterCounter
# Logic to initialize the Serial Ports
if (hasattr(config, 'seriaLBaudRate') == False
or hasattr(config, 'serialDevices') == False
or len(config.serialDevices) == 0):
config.printMessage("ERROR: Couldn't Initialize Serial Ports")
mainLoopFlag = False
else: # Only initialize if the Congifurations appear in order
for device in config.serialDevices:
sp = serialPort.SerialPort(device, config.seriaLBaudRate)
sp.addFlowmeter(flowmeterCounter) # Adding flow0
flowmeterCounter += 1
sp.addFlowmeter(flowmeterCounter) # Adding flow1
flowmeterCounter += 1
serialPorts.append(sp)
def processMeterReading(self):
config.printMessage("> Identified as a Meter Reading Message")
self.values.append(self.processTypeLengthValue())
self.values.append(self.processTypeLengthValue())
for i in self.values:
if (i['tag'].encode('hex') == "01"):
config.printMessage("> Flow Meter Name: " + i['value'])
elif (i['tag'].encode('hex') == "02"):
rawValue = i['value'].encode('hex')
meterReading = rawValue[2] + rawValue[3] + rawValue[
0] + rawValue[1]
config.printMessage("> Flow Meter Reading: " +
str(int(meterReading, 16)))
else:
config.printMessage("Error: Unknown tag value")
import config
import struct
import ksm
import serialPort
import serial
import requests
import sys
mainLoopFlag = True
serialPorts = []
flowmeterCounter = 0
# The OPTIONAL second command line attribute would be the serial port
if (len(sys.argv) > 1):
config.printMessage("> Serial port '" + sys.argv[1] +
"' passed from command line")
config.serialDevices[0] = sys.argv[1]
else:
config.printMessage(
"> No Serial port passed from command line (Defaulting to '" +
config.serialDevices[0] + "')")
# The OPTIONAL third command line attribute would be the starting keg number (requires serial port passed in as well)
if (len(sys.argv) > 2):
config.printMessage("> Starting Keg Number of '" + sys.argv[2] +
"' passed from command line")
flowmeterCounter = int(sys.argv[2])
else:
config.printMessage(
"> No Starting Keg Number passed from command line (Defaulting to '" +
str(flowmeterCounter) + "')")
def processFooter(self):
self.crc = self.serial.read(2)
self.trailer = self.serial.read(2)
config.printMessage("> CRC is " + self.crc.encode('hex'))
def processHelloMessage(self):
config.printMessage("> Identified as a Hello Reading Message")
self.values.append(self.processTypeLengthValue())
self.values.append(self.processTypeLengthValue())
self.values.append(self.processTypeLengthValue())
for i in self.values:
if (i['tag'].encode('hex') == "01"):
rawValue = i['value'].encode('hex')
firmwareVersion = rawValue[0] + rawValue[1]
config.printMessage("> Firmware Version: " +
str(int(firmwareVersion, 16)))
elif (i['tag'].encode('hex') == "02"):
rawValue = i['value'].encode('hex')
protocolVersion = rawValue[2] + rawValue[3] + rawValue[
0] + rawValue[1]
config.printMessage("> Protocal Version: " +
str(int(protocolVersion, 16)))
elif (i['tag'].encode('hex') == "03"):
config.printMessage("> Board Serial Number: " + i['value'])
elif (i['tag'].encode('hex') == "04"):
rawValue = i['value'].encode('hex')
millis = rawValue[2] + rawValue[3] + rawValue[0] + rawValue[1]
config.printMessage("> Uptime in Milliseconds: " +
str(int(millis, 16)))
elif (i['tag'].encode('hex') == "05"):
rawValue = i['value'].encode('hex')
days = rawValue[2] + rawValue[3] + rawValue[0] + rawValue[1]
config.printMessage("> Uptime in Milliseconds: " +
str(int(days, 16)))
else:
config.printMessage("Error: Unknown tag value")
def initialize(self):
config.printMessage("> Initializing Serial Port at '" + self.device +
"' and at " + str(self.baudrate) + " baudrate")
self.ser = serial.Serial(self.device, self.baudrate, serial.EIGHTBITS,
serial.PARITY_NONE)
self.ser.flushInput()
