Answer Happy

Can you please explain in great detail, line by line how
this code works and function. Thank you.
from options import Options
from time import *
from physical import *
from gpio import *
from ioeclient import IoEClient


DELAY_TIME = 1000 # var DELAY_TIME
current_time = 0 # var
current_time

X_READ_DISTANCE = 50 # var
X_READ_DISTANCE
Y_READ_DISTANCE = 50 # var
Y_READ_DISTANCE
cardID = 0 # var cardID
lastCardID = 0 # var lastCardID
state = 2 # waiting # var state

def setup ():

# Registration Server Setup

IoEClient.setup({
"type": "RFID Reader",
"states": [{
"name":
"Card ID",
"type":
"number",
"unit":
'',

"controllable": False
},
{
"name":
"Status",
"type":
"options",
"options":
{

"0": "Valid",

"1": "Invalid",

"2": "Waiting"
},

"controllable": True
}]
})

IoEClient.onInputReceive( lambda rinput:
processData(rinput, True) )

def loop ():
global cardID, lastCardID, state
devices = devicesAt(getCenterX(), getCenterY(),
X_READ_DISTANCE, Y_READ_DISTANCE) # var
devices
found = False # var
found
for i in xrange(0, len(devices)) :
if devices is getName():
continue

cardID = getDeviceProperty(devices,
'CardID')
found = True
break

if not found:
cardID = lastCardID = 0
setState(2)
else:
if lastCardID != cardID:
lastCardID = cardID
sendReport()

delay(DELAY_TIME)

def setState (newState):
global state
if state != newState:
state = newState
analogWrite(A1, state)
sendReport()
def sendReport ():
report = str( int(cardID)) + "," + str(state)
# var report
IoEClient.reportStates(report)



def processData (data, bIsRemote):
if len(data) <= 0:
return
data = data.split(",")
setState(int(data[1]))



if __name__ == "__main__":
setup()
while True:
loop()
idle()