ACS ACR1255U-J1, Reference Manual

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ACR1255U-J1 – Reference Manual
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5.2. Profile Selection
ACR1255U-J1 is a smart card reader that is designed to use Bluetooth technology as an interface to
transmit data. A customized service called Commands Communication with three pipes is used: one
pipe is used for command request, the second pipe is for command response/card notification, and
third is RFU.
Also, the reader’s current power consumption is significantly greater when the reader is operating in
Bluetooth mode, hence, a standard battery service is used to notify the paired device about the
current battery status. When there is a change in the battery status, the reader will notify the paired
device through a specific pipe. To simplify, the battery levels are divided into three groups: sufficient
batter
y (≥ 3.78 V), low battery (<3.78 V and ≥ 3.68 V), and no battery (<3.68 V).
Finally, to provide more reader information to the user, a customized Device Information service is
added. This can only be read manually, or by an application request. The characteristics include
Model Number, Serial Number, Firmware Revision, and Manufacturer Name.
Service UUID Pipe
Smart Card
FFF1 Commands Request
FFF2 Commands Response/Card Notification
FFF3 RFU
Battery 2A19 Battery Level
Device Information
2A23 System ID
2A24 Model Number
2A25 Serial Number
2A26 Firmware Revision
2A27 Hardware Revision
2A29 Manufacturer Name
Table 4 : ACR1255U-J1’s Bluetooth Service
Attribute Name UUID Handle
DeviceName 2A00 03h
Send(Reader
→
Paired device) 8002 0Bh
Receive(Paired device
→
Reader) 8003 0Eh
CardStatus 8004 10h
BatteryLevel 2A19 14h
Manufacturer 2A29 18h
SerialNumber 2A25 21h
FW_Version 2A26 1Bh
ModelNumber 2A24 1Eh
Table 5 : ACR1255U-J1 Service Handles and UUID Information List