RFID interfacing

[Apoorva]

Hi, plz help me

 

my RFID shows some garbage values

 

I have used code available in the project named

How to interface RFID with 8051 microcontroller (AT89C51)

 

 

[SHAH DISHANT H.]

Hi,

 

LCD needs ASCII data to display anything on it. First check RFID with hyperterminal. If its showing values fine then tell me what are the ID numbers of your TAG.

 

We have to convert the digit into ASCII.

 

Post result of hyperterminal.

[Apoorva]

I dont know what is hyperterminal, plz tell me what is it.

[Apoorva]

how can I know my RFID tag’s uniques number without reader module???

 

Can it be known from printed on it??

 

plz help me.

 

 

[mohita]

Hi,

Hyper terminal is a computer communication software. Some uses of hyper terminal are:

 

1.Use a TCP/IP n/w to connect to systems on the internet or your n/w.

2.Use a Dial-up modem to dial into modem based systems.

3.Talk directly to many different types of devices using serial COM ports.

 

Thanks

[SHAH DISHANT H.]

Hi,

 

Hyperterminal is a communication tool. In windows xp, its by default installed but in Vista, 7 and 8, its not available. You can download it from website. Its easily available. 

 

Once installed, you can connect RFID module with PC. for laptop you need usb to serial converter.

 

You can not identify unique tag number without reader. You need above mentioned setup.

 

If you find any difficulty, post us back.

[Apoorva]

thank you,

 

I got the serial number using HyperTerminal. 

[Apoorva]

I get the card number using Hyperterminal

 

card numbers and numbers printed on card  are; 

 

4E00706E3B6B –0007368251 112,28219

 

4F006DD849B3 — 0007198793 109,55369

 

4F006DD858A2 — 0007198808 109,55384

 

4F006DE25595 — 0007201365 109,57941

 

i have tried all the code given in  engineersgarage but still it shows garbage.

 

plz plz plz help me

 

thank you..

[SHAH DISHANT H.]

Hi,

 

Once you are getting with hyperterminal, lets move ahead step by step…!!

 

1. WAP to receive data serially on 8051… Send single byte data from hyperterminal and display it on LCD

2. Modify above progra, to receive data from hyperterminal and store in array and display it on LCD

3. Run the same code with RFID instead of HYPERTERMINAL…!!

 

 

 

All the best…!!!

[Apoorva]

SCON=0x50;

TH1=0xFD;

TMOD=0x20;            

TR1=1;     

 

is this right code to recieve 8 bit data at 9600 baud?? 

[SHAH DISHANT H.]

Hi,

 

The above code is only to initialise serial communication at 9600 baudrate.

 

To receive data use following function…

void main()

{

 int a;

a=receivedataserially();

 

 

}

 

int receivedataserially()

{

while(RI==0);

RI=0;

return SBUF;

 

}

 

 

From above code, you will get data in variable a.

 

 

[Pratik Agrawal]

Hi, I have connected my rfid module with hyperterninal but it is not showing any data, what should i do?

 

[SHAH DISHANT H.]

Hi,

 

If its not showing on hyperterminal try with different baudrates..!!

 

Even if its not working, may be you have to change the READER…!!!

[Author]

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