connect smartcard and defines class CLA code for communication
uses "pyscard" library services
'''
print "Checking ATR Value"
iso = ISO7816()
iso.ATR_scan()
print "List Card Information"
u = USIM()
imsi = u.get_imsi()
acc = u.get_acc()
spdi = u.get_spdi()
spdi2 = u.get_spdi_readBinary()
iccid = u.get_ICCID()
plmnsel = u.get_plmnsel()
fplmn = u.get_fplmn()
print " "
print "------------------------------------"
print "------------- Results --------------"
print "------------------------------------"
print "IMSI: " + imsi
print "ACCs: ", acc
print "SPDI: ", spdi
print "SPDI Read Binary response: ", spdi2
print "ICCID: " + iccid
print "PLMNSel", plmnsel
print "FPLMNs", fplmn
uicc.SELECT_FILE(0, 4, [0x3F, 0x00])
uicc.SELECT_FILE(0, 4, [0x7F, 0x20])
uicc.SELECT_FILE(0, 4, [0x6F, 0x30])
print ('PLMNsel EF File selected.')
# go to PLMNsel address and update binary string for HPLMN
ret = uicc.UPDATE_BINARY(0, 0, PLMNsel)
print('Writing PLMN selector: %s' % ret)
if __name__ == '__main__':
print 'INET USIM card update PLMNsel with value: '
u = USIM()
imsi = u.get_imsi()
print '====>> IMSI: ' + imsi
plmnsel_before = u.get_plmnsel()
print '====>> Current PLMNsel: ' , plmnsel_before
program_files(u)
plmnsel_after = u.get_plmnsel()
print '====>> Modified PLMNsel: ' , plmnsel_after
u.disconnect()
print 'INET USIM card PLMNsel update completed'