pn532-lib

PN532 NFC Library for Raspberry Pi, STM32, Arduino

How to use?

For Raspberry Pi

Using SPI

1. Set I0I1:

• I0 --> LOW
• I1 --> HIGH

2. Hardware Connection:

• SCK --> SCK
• MISO --> MISO
• MOSI/SDA/TX --> MOSI
• NSS/SCL/RX --> D4 (GPIO 4 of BCM pinout) Optional:
• RSTPDN --> D20 (for hardware reset)

3. Modify the PN532 Init lines for SPI in example/raspberrypi/rpi_get_uid.c:

PN532_SPI_Init(&pn532);
//PN532_I2C_Init(&pn532);
//PN532_UART_Init(&pn532);

4. Compile with make:

cd examples/raspberrypi && make

5. Run the demo with:

./rpi_get_uid.exe

Using I2C

1. Set I0I1:

• I0 --> HIGH
• I1 --> LOW

2. Hardware Connection:

• MOSI/SDA/TX --> SDA
• NSS/SCL/RX --> SCL Optional:
• P32 --> D16 (for hardware request)
• RSTPDN --> D20 (for hardware reset)

3. Modify the PN532 Init lines for I2C in example/raspberrypi/rpi_get_uid.c:

//PN532_SPI_Init(&pn532);
PN532_I2C_Init(&pn532);
//PN532_UART_Init(&pn532);

4. Compile with make:

cd examples/raspberrypi && make

5. Run the demo with:

./rpi_get_uid.exe

Using UART

1. Set I0I1:

• I0 --> LOW
• I1 --> LOW

2. Hardware Connection:

• MOSI/SDA/TX --> RX
• NSS/SCL/RX --> TX Optional:
• RSTPDN --> D20 (for hardware reset)

3. Modify the PN532 Init lines for UART in example/raspberrypi/rpi_get_uid.c:

//PN532_SPI_Init(&pn532);
//PN532_I2C_Init(&pn532);
PN532_UART_Init(&pn532);

4. Compile with make:

cd examples/raspberrypi && make

5. Run the demo with:

./rpi_get_uid.exe

For Arduino UNO

Please first copy the files pn532.c, pn532.h, pn532_uno.cpp and pn532_uno.h to the libraries directory, which can be set up by Arduino IDE --> preference.

Then you should also connect the serial port from your UNO to a PC for Serial Monitor.

• Baudrate: 115200.

Using SPI

1. Set I0I1:

• I0 --> LOW
• I1 --> HIGH

2. Hardware Connection:

• SCK --> Arduino D13
• MISO --> ArduinoD12
• MOSI --> Arduino D11
• NSS --> Arduino D4

3. Open examples\arduino\uno_get_uid\ uno_get_uid.ino with Arduino IDE then change the PN532 Init lines for SPI:

PN532_SPI_Init(&pn532);
//PN532_I2C_Init(&pn532);

4. Compile and upload the demo to your Arduino UNO board:

examples\arduino\uno_get_uid\ uno_get_uid.ino

Using I2C

1. Set I0I1:

• I0 --> HIGH
• I1 --> LOW

2. Hardware Connection:

• SCL --> ArduinoA5
• SDA --> ArduinoA4

3. Open examples\arduino\uno_get_uid\uno_get_uid.ino with Arduino IDE then change the PN532 Init lines for I2C:

//PN532_SPI_Init(&pn532);
PN532_I2C_Init(&pn532);

4. Compile and upload the demo to your Arduino UNO board:

examples\arduino\uno_get_uid\uno_get_uid.ino

For STM32

The demos are build on STM32F103CBT6, but you can port them with STM32CubeMX.

1. Set I0I1:

• I0 --> LOW
• I1 --> HIGH

2. Hardware connection:

• SCK --> PA5
• MISO --> PA6
• MOSI --> PA7
• NSS --> PA4
• PA9 --> RX
• PA10 --> TX

3. Extract: pn532-lib\examples\stm32\stm32.7z
4. Open the project MDK-ARM\pn532_stm32.uvprojx with Keil V5
5. Build and download the project to your STM32 board.