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POdecoding serial port communication
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  1. POdecoding serial port communication
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    copied!<p>I'm hoping for some help with trying to write a piece of software that will allow me to read data from a serial magcard reader I have.</p> <p>we have this card reader which it a very old piece of equipment we use to capture our members membership card details in our venues. The card reader has a piece of software that downloads the card details (that are stored on the card reader) the software then places the details in a text file on the C drive. I want to write some software that will do exactly the same thing.</p> <p>I may be barking up the wrong tree or hoping for too much but any help at all would be great.</p> <p>I have so far attached the card reader to the serial port of my machine and ran the legacy software and used a com port monitor to capture the communication. this is where im a bit stuck and was wondering if anyone could tell me if what Ive capture is useful in anyway and hopefully will point me in the right direction.</p> <p>I ran the download sequence when the card reader had no card information stored on it and capture this.</p> <pre><code>[12/06/2012 18:28:55] - Open port COM4 [12/06/2012 18:29:02] - Written data 31 00 01 00 00 00 32 1.....2 [12/06/2012 18:29:04] - Read data 31 00 06 00 0c 06 0c 00 00 00 00 55 1..........U [12/06/2012 18:29:04] - Written data 33 00 01 00 00 00 34 3.....4 [12/06/2012 18:29:05] - Read data 33 00 14 00 06 03 00 00 0c 00 00 0d 00 00 42 00 3.............B. 00 43 00 00 63 00 00 00 01 51 .C..c....Q [12/06/2012 18:29:06] - Written data 34 00 01 00 00 00 35 4.....5 [12/06/2012 18:29:08] - Read data 34 00 01 00 00 00 35 4.....5 [12/06/2012 18:29:08] - Written data 35 00 07 00 0c 06 0c 12 1c 36 00 00 be 5........6..¾ [12/06/2012 18:29:10] - Read data 35 00 01 00 00 00 36 5.....6 [12/06/2012 18:29:11] - Close port COM4 </code></pre> <p>Then I swiped 1 card so the card reader had this stored in its memory and ran the download again, this time I got this</p> <pre><code>[12/06/2012 18:31:23] - Open port COM4 [12/06/2012 18:31:48] - Written data 31 00 01 00 00 00 32 1.....2 [12/06/2012 18:31:50] - Read data 31 00 06 00 0c 06 0c 00 00 00 00 55 1..........U [12/06/2012 18:31:51] - Written data 33 00 01 00 00 00 34 3.....4 [12/06/2012 18:31:53] - Read data 33 00 14 00 06 03 00 00 0c 00 00 0d 00 00 42 00 3.............B. 00 43 00 00 63 00 00 00 01 51 .C..c....Q [12/06/2012 18:31:55] - Written data 34 00 01 00 00 00 35 4.....5 [12/06/2012 18:31:57] - Read data 34 00 01 00 00 00 35 4.....5 [12/06/2012 18:31:57] - Written data 35 00 07 00 0c 06 0c 12 1f 16 00 00 a1 5...........¡ [12/06/2012 18:32:01] - Read data 35 00 01 00 00 00 36 5.....6 [12/06/2012 18:32:01] - Close port COM4 </code></pre> <p>Finally I swiped 3 cards and ran the download again and captured this</p> <pre><code>[12/06/2012 18:30:21] - Open port COM4 [12/06/2012 18:30:22] - Written data 31 00 01 00 00 00 32 1.....2 [12/06/2012 18:30:24] - Read data 31 00 06 00 0c 06 0c 00 03 00 00 58 1..........X [12/06/2012 18:30:24] - Written data 32 00 04 00 03 00 01 00 00 3a 2........: [12/06/2012 18:30:26] - Read data 32 00 1c 00 03 00 01 00 12 1e 58 28 54 08 33 00 2.........X(T.3. 12 1e 58 28 53 96 95 00 12 1e 58 28 54 12 32 00 ..X(S–•...X(T.2. 05 07 .. [12/06/2012 18:30:27] - Written data 33 00 01 00 00 00 34 3.....4 [12/06/2012 18:30:29] - Read data 33 00 14 00 06 03 00 01 0c 00 00 0d 00 00 42 00 3.............B. 00 43 00 00 63 00 00 00 01 52 .C..c....R [12/06/2012 18:30:30] - Written data 34 00 01 00 00 00 35 4.....5 [12/06/2012 18:30:41] - Read data 34 00 01 00 00 00 35 4.....5 [12/06/2012 18:30:41] - Written data 35 00 07 00 0c 06 0c 12 1e 15 00 00 9f 5...........Ÿ [12/06/2012 18:30:43] - Read data 35 00 01 00 00 00 36 5.....6 [12/06/2012 18:30:43] - Close port COM4 </code></pre> <p>All I know is that the legacy software checks to see if the device is connected to the com port selected then downloads the data then clears the data from the card reader</p> <p>And in case it helps.. If I don't have the card reader attached and try and download I get this error</p> <blockquote> <p>Command 0x31 Not Sent</p> </blockquote> <p>Can anyone shed any light at all on this?</p> <p>Thank you in advance.</p>
 

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