Channels ▼
RSS

JVM Languages

Java & RFID Tags

Source Code Accompanies This Article. Download It Now.


November, 2005: Java & RFID Tags

(a) Command Field (1)
Bit Use Setting Comment
0/1 Mode/Cmd 00 Perform single command (MSB,LSB) (for example: single read, program, lock)
01 Read in continuous Normal Mode
10 Read in continuous Line Mode
11 Send micro reader S/W version
2 FBCC calculation 1/0 If set, micro reader calculates FBCC of the MPT protocol
3 Power Burst I 1/0 If set, needs to be determined in Data Field
4 Power Pause Duration 1/0 If set, needs to be determined in Data Field
5 Power Burst II 1/0 If set, needs to be determined in Data Field
6 Data 1/0 If set, needs to be determined in Data Field
7 Cmd expansion Field 1/0 If set, Command Field (2) follows

—————————————————————————————————————————————
(b) Command Field (2)
Bit Use Setting Comment
0 Special Write Timing 1/0 If set, needs to be determined in Data Field
1 Wireless Synchronization 1/0 If set, wireless synchronization is used
2 DBCC calculation 1/0 If set, micro reader calculates DBCC of the R/W and MPT write data
3-7 Reserved - -
—————————————————————————————————————————————
(c) Data Field
Data Use Range Comment
Field Write Timing
1 Power Burst I 1..255 ms If bit 3 of Command Field (1) is set
2 Power Pause Duration 1..255 ms If bit 4 of Command Field (1) is set
3 Power Burst II 1..255 ms If bit 5 of Command Field (1) is set
4/5 toffLow (LSByte/MSByte) 28..2044 ms If bit 0 of Command Field (2) is set
6/7 tonLow (LSByte/MSByte) 28..2044 ms If bit 0 of Command Field (2) is set
8/9 28..2044 ms If bit 0 of Command Field (2) is set
10/11 28..2044 ms If bit 0 of Command Field (2) is set
12 # of Data Fields that follow Must not cause an infringement of the total number of bytes allowed If bit 6 of Command Field (1) is set
13 Data Fields LSByte first

Table 1: PC-to-micro reader communication protocol.


Related Reading


More Insights






Currently we allow the following HTML tags in comments:

Single tags

These tags can be used alone and don't need an ending tag.

<br> Defines a single line break

<hr> Defines a horizontal line

Matching tags

These require an ending tag - e.g. <i>italic text</i>

<a> Defines an anchor

<b> Defines bold text

<big> Defines big text

<blockquote> Defines a long quotation

<caption> Defines a table caption

<cite> Defines a citation

<code> Defines computer code text

<em> Defines emphasized text

<fieldset> Defines a border around elements in a form

<h1> This is heading 1

<h2> This is heading 2

<h3> This is heading 3

<h4> This is heading 4

<h5> This is heading 5

<h6> This is heading 6

<i> Defines italic text

<p> Defines a paragraph

<pre> Defines preformatted text

<q> Defines a short quotation

<samp> Defines sample computer code text

<small> Defines small text

<span> Defines a section in a document

<s> Defines strikethrough text

<strike> Defines strikethrough text

<strong> Defines strong text

<sub> Defines subscripted text

<sup> Defines superscripted text

<u> Defines underlined text

Dr. Dobb's encourages readers to engage in spirited, healthy debate, including taking us to task. However, Dr. Dobb's moderates all comments posted to our site, and reserves the right to modify or remove any content that it determines to be derogatory, offensive, inflammatory, vulgar, irrelevant/off-topic, racist or obvious marketing or spam. Dr. Dobb's further reserves the right to disable the profile of any commenter participating in said activities.

 
Disqus Tips To upload an avatar photo, first complete your Disqus profile. | View the list of supported HTML tags you can use to style comments. | Please read our commenting policy.
 

Video