The BUFLEN is fixed 5 bytes now, which has to be increased.
A timeout has to be implemented, which is smaller than max_waittime.
If the timeout is triggered, the data received in the buffer so far
should be sent to the host computer which is responsible for generating
a response. Without the timeout the max_waittime of the phone would
expire and it would repeat sending the command, so that we do not
have atomary messages anymore.
Switching to config 1 and 2 works, but to 3 and 4 usb_enum.py is
hanging for some reason. Switching the USB config from Sniffer to
CCID reader was not tested yet.
It is possible to use sniffer.py to sniff the phone-simcard-communication.
To be fixed: The buffer size read is fixed and the data is only send
over USB if the buffer max length is reached. which means we don not
get the last bytes of the transaction.
This should be changed in one of the next commits. Maybe the former
simtrace code can give some inspiration on this topic.
