$ ./EMV-CAP -h
usage: EMV-CAP [-h] [-l] [-L] [--tlv PARSETLV]
               [-r {<index>, <reader_substring>}] [-d] [-v] [-m {1,2}]
               [--warmreset {auto,yes,no}]
               [N [N ...]]

EMV-CAP calculator

optional arguments:
  -h, --help            show this help message and exit

Standalone options:
  -l, --listreaders     print list of available readers and exit
  -L, --listapps        print list of available applications on the card and
                        exit
  --tlv PARSETLV        parse a hex string into TLV elements

Global options:
  -r {<index>, <reader_substring>}, --reader {<index>, <reader_substring>}
                        select one specific reader with reader index, name
                        string or sub-string otherwise first reader found will
                        be used.
  -d, --debug           print exchanged APDU for debugging
  -v, --verbose         print APDU parsing

Modes and data:
  -m {1,2}, --mode {1,2}
                        M1/M2 mode selection (mandatory, unless -l or -L is
                        used)
  N                     number(s) as M1/M2 data: max one 8-digit number for M1
                        and max 10 10-digit numbers for M2
  --warmreset {auto,yes,no}
                        Warm reset: yes / no / auto (default) If 'auto' it
                        will perform a warm reset if the ATR starts with 3F
                        (indirect convention)

Examples:
    EMV-CAP --listreaders
    EMV-CAP --listapps
    EMV-CAP --listapps --debug --reader foo
    EMV-CAP -m1 123456
    EMV-CAP -m2
    EMV-CAP -m2 1000 3101234567

$ EMV-CAP -r 2 -m2 1000 123456
Traceback (most recent call last):
  File "/usr/bin/EMV-CAP", line 321, in <module>
    (RAPDU, sw1, sw2) = myTransmit(connection, CAPDU, args.debug)
  File "/usr/bin/EMV-CAP", line 188, in myTransmit
    (RAPDU, sw1, sw2) = connection.transmit(hex2lint(CAPDU))
  File "/usr/lib/python2.7/site-packages/smartcard/CardConnectionDecorator.py", line 82, in transmit
    return self.component.transmit(bytes, protocol)
  File "/usr/lib/python2.7/site-packages/smartcard/CardConnection.py", line 146, in transmit
    data, sw1, sw2 = self.doTransmit(bytes, protocol)
  File "/usr/lib/python2.7/site-packages/smartcard/pcsc/PCSCCardConnection.py", line 196, in doTransmit
    'CardConnection.RAW_protocol')
smartcard.Exceptions.CardConnectionException: Invalid protocol in transmit: must be CardConnection.T0_protocol, CardConnection.T1_protocol, or CardConnection.RAW_protocol