RC522 about rfid

[iedame]

MISO (12), MOSI (11) and SCK (13) pins may be shared. SS must be exclusive (pin 10), so in your sketch:

#define SS_PIN 10 // change here if sketch is using #define
#define RST_PIN 9

RFID rfid(SS_PIN, RST_PIN); // or here otherwise

Change SS_PIN from 10 (pin used by the ethernet shield SS as you may see here: http://shieldlist.org/arduino/ethernet-v5) to any other digital pin. It should work.

More reference regarding SPI may be found here: http://arduino.cc/en/Reference/SPI

[c1p81]

thank you
works fine with SS_PIN=6 and RST_PIN= 7

[WA4OSH]

c1p81,
It looks like your issue has been answered. Can you close this?

Konrad

[WA4OSH]

Thank you

[c1p81]

sorry for delay

L

2014-04-15 9:54 GMT+02:00 Konrad Roeder [email protected]:

Thank you

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[sandeepthakur10]

I am having the same problem.
I am using ARDUINO UNO + ETHERNET SHIELD + RFID R522
I am not able to change the reset and ss pin of RFID.
Can you please help me. I am using rfid example code from arduino example and cannt find where to the ss and rest pin in code.
Kindly suggest me a way.