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rfid help

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hadeelqasaimeh

Joined: 05 Jan 2006
Posts: 105

rfid help

Posted: Wed Jun 04, 2008 4:46 pm

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hi community
its first time to work on RFID, so i do search here in forum, i have some questions please:
1- em drivers can work with any RFID reader?or just a specific kind?
2- Ex_rfid communicate via RS485, can i modify it to communicate via rs232?
3- i cant understand this part of Ex_rfid code:

Code:

// RFID database, terminated with 5xzero

#define EEPROMCEIL 250 // MUST be under 255-5=250
#define EEPROMBASE 0x2100 // base address of EEPROM
#rom EEPROMBASE = { 32, 72,185, 90, 2,
1, 2, 3, 4, 5,
0, 0, 0, 0, 0
} // EEPROM data

thank you

PCM programmer

Joined: 06 Sep 2003
Posts: 21708

Posted: Wed Jun 04, 2008 4:52 pm

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The Ex_rfid.c file has an explanation of that code at the top of the file:

Quote:

Checks received RFID, and compares the ID to an ID
stored in the EEPROM - if the IDs match then it lights the
green LED. If the IDs don't match then it lights the red LED.

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