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Connect the RC522 RFID read-write module via the SPI interface to read the card ID and type and output them to the screen.
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## 4. Compile wiringX
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Duo firmware already contains the compiled wiringX library (/usr/lib/libwiringx.so) and can be used directly. If you need to compile the source code of wiringX to generate the library, you can compile it as follows.
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