OLPC-NFC-IO

olpc-nfc-io.py

# Reader.py
# RFID / NFC Card Reader
# For adding names to each card and reading them out loud

import sys, os

# test if pyserial library is installed
try:
    import serial
except:
    print "To install the reader program:"
    print "In Terminal activity, enter:"
    print "sudo python /home/olpc/Activities/Pippy.py/pyserial-2.5/setup.py install"
    sys.exit()

ser = serial.Serial('/dev/ttyACM0', 9600)
line = ""
lastCard = ""
waitTime = 200
cardList = {}

while 1:
    line = line + ser.readline()

    if(line.find('#') > -1 and line.find('!') > -1):
        seeCard = line[line.rfind('#')+1:line.rfind('!')]
        if((lastCard != seeCard) or (waitTime < 0)):
            # write the name of the card
            print "Card: " + seeCard

            # check if the card has been seen before
            if(cardList.has_key(seeCard)):
                # speak the name of the card
                os.system('espeak -v en "' + cardList[seeCard] + '"')
            else:
                # ask for the name of the new card
                cardList[seeCard] = raw_input("What is the name of the card? ")
            waitTime = 200
            lastCard = seeCard
        line = ""
    else:
        waitTime = waitTime - 1