9
www.ubisys.de
5.
CDC Firmware
The device appears as a virtual serial port (COM port) by implementing the USB Communications
Device Class, Abstract Control Model (CDC/ACM) specification. All major operating systems,
including Windows (see below), Linux, and MacOS support such devices out-of-the-box.
Microsoft Windows requires an “.inf” file to recognize the device, which installs the built-in Windows
driver. This “.inf” file is (currently) not WHQL certified. Therefore, Microsoft Windows displays a
warning. If you need WHQL certified drivers for Microsoft Windows please file a feature request
([email protected]). Notice that the “.inf” file is digitally signed however, and thus can be installed on
all 64-bit versions of Microsoft Windows.
A simple AT command set is provided to inventory tags and to access them.
5.1.
Features
-
The virtual serial port allows easy interfacing to customer-specific applications
-
Supports ISO15693 (13.56 MHz) tags, e.g. TI Tag-It HF, NXP i-code SLI etc.
-
Features a simple to use, “AT-like” command set that allows scanning for tags, reading and writing
on-tag memories, modifying physical layer parameters, etc.
-
Thin abstraction layer over the ISO15693 protocol layer.
5.2.
CDC/ACM AT Command set
5.2.1.
Port Settings
The device represents itself as a virtual COM port. As such, port settings, like communication speed,
parity or stop bit settings will be ignored. No specific configuration is necessary and the port can be
operated at any settings (without influencing the communication speed).
5.2.2.
General Frame Format
Request frames are terminated with a carriage-return character (ASCII code 13 decimal; 0x0d
hexadecimal; “\r” as C string literal). The device terminates response frames with carriage-return
followed by line-feed (ASCII codes 13, 10 decimal; 0x0d, 0x0a hexadecimal, “\r\n” as C string literal).
Do not add any white space (space, back-space, tab, carriage-return, line-feed, etc.), it will not be
removed by the command-line parser and thus leads to “ERROR” responses.
5.2.3.
Device Information
This command queries the product information and firmware version of the device.
Содержание 7047
Страница 1: ...13 56 MHz RFID USB READER REFERENCE MANUAL...
Страница 28: ...28 www ubisys de...
Страница 34: ...34 www ubisys de...
Страница 37: ...37 www ubisys de Figure 4 Acknowledging the Warning Notice Step 2 Step 2 Acknowledge the warning message...
