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Added pin listing for the Leonardo board
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cniesen committed Dec 15, 2013
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23 changes: 12 additions & 11 deletions README.md
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Expand Up @@ -4,17 +4,18 @@ Arduino RFID Library for MFRC522 (13.56 Mhz)
Pin order, starting from the bottom left hand pin (in case your
MFRC522 doesn't have pin markings like the B2CQSHOP one):

| Pins | SPI | UNO | Mega2560 |
| ---- |:--------:| ----:| --------:|
| 1 | SAD (SS) | 10 | 53 |
| 2 | SCK | 13 | 52 |
| 3 | MOSI | 11 | 51 |
| 4 | MISO | 12 | 50 |
| 5 | IRQ | `*` | `*` |
| 6 | GND | GND | GND |
| 7 | RST | 5 | ? |
| 8 | +3.3V | 3V3 | 3V3 |
`* Not needed`
| Pins | SPI | UNO | Mega2560 | Leonardo |
| ---- |:--------:|:----:|:--------:|:--------:|
| 1 | SAD (SS) | 10 | 53 | 10 |
| 2 | SCK | 13 | 52 | SCK`1` |
| 3 | MOSI | 11 | 51 | MOSI`1` |
| 4 | MISO | 12 | 50 | MISO`1` |
| 5 | IRQ | `*` | `*` | `*` |
| 6 | GND | GND | GND | GND |
| 7 | RST | 5 | ? | Reset |
| 8 | +3.3V | 3V3 | 3V3 | 3.3V |
`*` Not needed
`1` on ICPS header

Using MFRC522 with other SPI components
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