You are here: start » interfaces » rc522

Differences

This shows you the differences between two versions of the page.

--- interfaces:rc522 [2015/02/10 18:17] – [Pinout] darron
+++ interfaces:rc522 [2015/03/22 21:55] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ==== RFID RC522 ====
 <wrap right>
-{{:interfaces:rc522.jpg?200}}
+{{:interfaces:rc522-2.jpg?200}}
 </wrap>
 This is a very inexpensive RFID module with an MFRC522 integrated circuit
 and a PCB antenna.
+Although the MFRC522 has I2C, serial and SPI interfaces, only SPI is
+available on this module.
 === Pinout ===
@@ Line 17: / Line 20: @@
 + *SDA SCK MOSI MISO IRQ GND RST 3V3  +
-*Although labelled I2C SDA, the function is SPI NSS.
+*SDA is the SPI NSS (slave select) input.
-I2C mode is not enabled on this module.
 </code>
+=== RPi ===
+^Pin   ^ALT  ^RFID RC522 |
+|GPIO8 |CE0  | SDA  |
+|GPIO11|SCLK | SCK |
+|GPIO10|MOSI | MOSI |
+|GPIO9 |MISO | MISO |
+|      |     | IRQ  |
+|GND   |     | GND  |
+|GPIO25|     | RST  |
+|3V3   |     | 3V3  |
 === Resources ===
 [[http://www.nxp.com/documents/data_sheet/MFRC522.pdf|Data-sheet]]