blue Namespace Reference

Functions
def	setupBuzzer (pin)
	Setup buzzer.
def	beep (duration)
	Make a beep sound.
def	lockUnlockMachine (code, lock_status, unlock_code="77e1")
	Lock or unlock the machine.
def	scanCard ()
	Scan for RFID tag.
def	getAlerts (status)
	Get alerts from the decoded machine status and convert it to the corresponding alerts (if any) If the corresponding bit is not set, the alert is not active.
def	end_read (signal, frame)
	End the program Runs when Ctrl+C is pressed.
def	read_statistics ()
	Read the statistics from the machine.

Variables
json	CHARACTERISTICS = json.load(open("/home/pi/Jura-Python-BT/data/uuids_handles.json"))["characteristics"]
	Global Constants The dictionary of UUIDs and handles of the bluetooth characteristics.
json	ALERTS = json.load(open("/home/pi/Jura-Python-BT/data/alerts.json"))["alerts"]
	The dictionary of alerts from machine status.
json	PRODUCTS = json.load(open("/home/pi/Jura-Python-BT/data/products.json"))["products"]
	The dictionary of products the machine can make.
json	PRICECOFFEE = json.load(open("/home/pi/Jura-Python-BT/data/prices.json"))["pricecoffee"]
	The dictionary of prices of the products.
int	BUZZER_PIN = 7
	The pin for the buzzer.
os	DEVICE = os.getenv("DEVICE")
	Load the environment variables from .env file.
os	MASTERCARD1 = os.getenv("MASTER_CARD_1")
	The UID of master card 1 read from .env file.
os	MASTERCARD2 = os.getenv("MASTER_CARD_2")
	The UID of master card 2 read from .env file.
db_connect	DB = db_connect()
	The open database connection.
BtEncoder	BtEncoder = BtEncoder()
	The instance of the BtEncoder class.
JuraEncoder	JuraEncoder = JuraEncoder()
	The instance of the JuraEncoder class.
MFRC522	RFIDREADER = MFRC522.MFRC522()
	The instance of the RFID reader class
	filename
	level
	format
	datefmt
lcddriver	lcd = lcddriver.lcd()
	Initialize LCD.
	child = pexpect.spawn("gatttool -b " + DEVICE + " -I -t random")
	Get all necessary variables from setup.py -> check file for more information.
	keep_alive_code
	locking_code
	unlock_code
	KEY_DEC
	all_statistics
	initial_time
	CURRENT_STATISTICS = decoded
db_connect	c = DB.cursor()
int	emergency_unlock = 0
	else :
str	lock_status = "unlocked"
	try :
serial	port = serial.Serial("/dev/serial0", baudrate = 9600, timeout = 1.0)
	except :
bool	buttonPress = False
	The variables used in the main loop.
bool	continue_reading = True
str	lastSeen = ""
int	counter = 0
int	disp_init = 1
int	payment_to_date = 1
str	client_to_pay = ""
int	admin_locked = 0
int	admin_prod = 0
int	total_prod = 0
int	payed_prod = 0
int	current_time = int(time.time() - initial_time)
int	hour = int(time.strftime("%H"))
int	minute = int(time.strftime("%M"))
int	second = int(time.strftime("%S"))
child	data = child.readline()
BtEncoder	decoded = BtEncoder.encDecBytes(data, KEY_DEC)
	timeout
def	uid_str = scanCard()
def	prod = read_statistics()
bool	product_made = False
get_value	value = get_value(DB, uid_str)
str	value_str = str("Balance: " + str('%.2f' % value) + " EUR")
get_name	lastName = get_name(DB, uid_str)
get_vorname	preName = get_vorname(DB, uid_str)
str	welStr = str("Hello " + preName)
str	msgStr3 = str("Hold for 2s please ")
str	msgStr4 = str("Chip below ")
time	intial_time_2 = time.time()
int	chosen = 0
int	started = 0
int	over = 0
int	time_total = int(time.time() - intial_time_2)
list	data2 = [int(x, 16) for x in data.split()]
list	as_hex = ["%02x" % d for d in decoded]
json	price_product = PRICECOFFEE[product_made]
int	value_new = 0
str	msgStr1 = str(product_made + " was made!")
str	msgStr2 = str(" Happy betty :) ")

Function Documentation

beep()

def blue.beep

(

duration

)

Make a beep sound.

Parameters

duration

The time in ms of the beep.

end_read()

def blue.end_read	(		signal,
			frame
	)

End the program Runs when Ctrl+C is pressed.

getAlerts()

def blue.getAlerts

(

status

)

Get alerts from the decoded machine status and convert it to the corresponding alerts (if any) If the corresponding bit is not set, the alert is not active.

Parameters

status

machine status

Returns

list of alerts according to ..data/alerts.json

lockUnlockMachine()

def blue.lockUnlockMachine	(		code,
			lock_status,
			unlock_code = "77e1"
	)

Lock or unlock the machine.

Parameters

code	The code to unlock the machine.
lock_status	The current status of the machine.
unlock_code	The code to unlock the machine (default 77e1).

Returns

lock_status The new status of the machine ("locked" or "unlocked")

read_statistics()

def blue.read_statistics

(

)

Read the statistics from the machine.

Returns

list of statistics

scanCard()

def blue.scanCard

(

)

Scan for RFID tag.

Returns

uid_str The UID of the tag or "0" if no tag is found

setupBuzzer()

def blue.setupBuzzer

(

pin

)

Setup buzzer.

Parameters

pin	The pin number of the buzzer.

Variable Documentation

admin_locked

int blue.admin_locked = 0

admin_prod

int blue.admin_prod = 0

ALERTS

json blue.ALERTS = json.load(open("/home/pi/Jura-Python-BT/data/alerts.json"))["alerts"]

The dictionary of alerts from machine status.

all_statistics

blue.all_statistics

as_hex

list blue.as_hex = ["%02x" % d for d in decoded]

BtEncoder

BtEncoder blue.BtEncoder = BtEncoder()

The instance of the BtEncoder class.

buttonPress

bool blue.buttonPress = False

The variables used in the main loop.

BUZZER_PIN

int blue.BUZZER_PIN = 7

The pin for the buzzer.

c

db_connect blue.c = DB.cursor()

CHARACTERISTICS

json blue.CHARACTERISTICS = json.load(open("/home/pi/Jura-Python-BT/data/uuids_handles.json"))["characteristics"]

Global Constants The dictionary of UUIDs and handles of the bluetooth characteristics.

child

pexpect blue.child = pexpect.spawn("gatttool -b " + DEVICE + " -I -t random")

Get all necessary variables from setup.py -> check file for more information.

chosen

int blue.chosen = 0

client_to_pay

str blue.client_to_pay = ""

continue_reading

bool blue.continue_reading = True

counter

int blue.counter = 0

CURRENT_STATISTICS

BtEncoder blue.CURRENT_STATISTICS = decoded

current_time

int blue.current_time = int(time.time() - initial_time)

data

list blue.data = child.readline()

data2

list blue.data2 = [int(x, 16) for x in data.split()]

datefmt

blue.datefmt

DB

db_connect blue.DB = db_connect()

The open database connection.

decoded

BtEncoder blue.decoded = BtEncoder.encDecBytes(data, KEY_DEC)

DEVICE

os blue.DEVICE = os.getenv("DEVICE")

Load the environment variables from .env file.

The BlackBetty2 mac address read from .env file

disp_init

int blue.disp_init = 1

else

blue.else :

emergency_unlock

int blue.emergency_unlock = 0

except

blue.except :

filename

blue.filename

format

blue.format

hour

int blue.hour = int(time.strftime("%H"))

initial_time

blue.initial_time

intial_time_2

time blue.intial_time_2 = time.time()

JuraEncoder

JuraEncoder blue.JuraEncoder = JuraEncoder()

The instance of the JuraEncoder class.

keep_alive_code

blue.keep_alive_code

KEY_DEC

blue.KEY_DEC

lastName

get_name blue.lastName = get_name(DB, uid_str)

lastSeen

str blue.lastSeen = ""

lcd

lcddriver blue.lcd = lcddriver.lcd()

Initialize LCD.

level

blue.level

lock_status

zockUnlockMachine blue.lock_status = "unlocked"

locking_code

blue.locking_code

MASTERCARD1

os blue.MASTERCARD1 = os.getenv("MASTER_CARD_1")

The UID of master card 1 read from .env file.

MASTERCARD2

os blue.MASTERCARD2 = os.getenv("MASTER_CARD_2")

The UID of master card 2 read from .env file.

minute

int blue.minute = int(time.strftime("%M"))

msgStr1

str blue.msgStr1 = str(product_made + " was made!")

msgStr2

str blue.msgStr2 = str(" Happy betty :) ")

msgStr3

str blue.msgStr3 = str("Hold for 2s please ")

msgStr4

str blue.msgStr4 = str("Chip below ")

over

int blue.over = 0

payed_prod

int blue.payed_prod = 0

payment_to_date

int blue.payment_to_date = 1

port

serial blue.port = serial.Serial("/dev/serial0", baudrate = 9600, timeout = 1.0)

preName

get_vorname blue.preName = get_vorname(DB, uid_str)

price_product

json blue.price_product = PRICECOFFEE[product_made]

PRICECOFFEE

json blue.PRICECOFFEE = json.load(open("/home/pi/Jura-Python-BT/data/prices.json"))["pricecoffee"]

The dictionary of prices of the products.

prod

def blue.prod = read_statistics()

product_made

bool blue.product_made = False

PRODUCTS

json blue.PRODUCTS = json.load(open("/home/pi/Jura-Python-BT/data/products.json"))["products"]

The dictionary of products the machine can make.

RFIDREADER

MFRC522 blue.RFIDREADER = MFRC522.MFRC522()

The instance of the RFID reader class

second

int blue.second = int(time.strftime("%S"))

started

int blue.started = 0

time_total

int blue.time_total = int(time.time() - intial_time_2)

timeout

blue.timeout

total_prod

int blue.total_prod = 0

try

blue.try :

uid_str

def blue.uid_str = scanCard()

unlock_code

blue.unlock_code

value

get_value blue.value = get_value(DB, uid_str)

value_new

get_value blue.value_new = 0

value_str

str blue.value_str = str("Balance: " + str('%.2f' % value) + " EUR")

welStr

str blue.welStr = str("Hello " + preName)