Reference Manual for SCR3310 v2 Contact Desktop Reader
Document Version 1.1
Last revised on 2018-07-19
Page 20 of 40
6:
Commands description
6.1:
Escape commands for the SCR3310 V2
6.1.1:
Sending Escape commands to SCR3310 V2
A developer can use the following method to send Escape commands to SCR3310 V2
•
SCardControl method defined in PC/SC API
In Windows, in order to be able to send Escape commands to the SCR3310 V2, the feature has
got to be enabled by setting a REG_DWORD value named ‘EscapeCommandEnable’ in the
registry to a value of ‘1’.
For Windows XP and Windows Vista, the key to hold the value would be
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_04E6&PID_58
16\ Device-Instance-xxxx \Device Parameters
For Windows 7 and Windows 8, that would be
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_04E6&PID_58
16\Device-Instance-xxxx \Device Parameters\WUDFUsbccidDriver
Device-Instance-xxxx has got to be equal to the serial number of the reader used, so this
modification has got to be made for every physical reader intended to be used on the machine
in question. The reader has got to be plugged in at least once for the mentioned key to exist and
the driver has got to be restarted for this setting to take effect. (Unplug and re-plug the reader).
To be able to work with synchronous memory cards using our MCard API, the same setting will
have to be established.
See appendix B for some sample code sending Escape commands to the reader.
