A Node-Red node that allows you to read NFC tags with an RC522 card reader. Tested the node on a Jetson Nano.
Requirements
Enable SPI
- Next, configure the Jetso for SPI, use the command
sudo /opt/nvidia/jetson-io/jetson-io.py
- Select Configure Jetson 40pin Header
- Then, Select Configure Header pins manually
- Select spi1 and then select exit
- Select Save pin changes
- Select Save and reboot to reconfigure pins
- Last, use the following command to enable spidev
sudo modprobe spidev
WIRING
You need to connect to RC522 card reader to the following pins:
| | PIN |
|------|-----|
| SDA | 24 |
| SCK | 23 |
| MOSI | 19 |
| MISO | 21 |
| GND | 6 |
| RST | 22 |
| 3.3V | 1 |
NOTES
Currently this project only support reading tags on SPI bus 0.0. Also, the node only supports reading tags, not writing tags.