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Microduino NFC is a two-way connection and identification module for close range wireless communication, work at 13.56MHz frequency, about 10cm working distance and realize the data exchange and service.
Features
- Use PN532 highly integrated contactless reading and writing chip, contains a 80C51 microcontroller core with 40kB ROM and 1 kB RAM;
- Integrate the RF field detector;
- Integrate the data mode detector;
- Low power consumption mode, hardware power lost mode and software power lost mode;
- In reading and writing mode, support Mifare Classic encryption, which can support 212kbit/s and 424 kbit/s two kinds of higher data transfer rate;
- In FeliCa mode，support 106kbit/s, 212kbit/s and 424kbit/s communication rate;
- Integrate the NFCIP-1's RF interface, transfer rate up to 424kbit/s.
Specifications
- 2.7V~5.5V power;
- Specific I/O port to contorl external device;
- In reading and writing mode, the default working distance more than 50mm, actually distance depends on antenna size, tuning, and power supply;
- In NFCIP-1 mode, the default working distance more than 50mm, actually distance depends on antenna size, tuning, and power supply;
- In FeliCa mode, the default working distance more than 100mm, actually distance depends on antenna size, tuning, and external field strength;
- Reading and writing mode supports ISO/IEC 14443A/MIFARE mechanism, FeliCa mechanism and ISO/IEC 14443B mechanism;
- FeliCa mode supports ISO 14443A / MIFARE mechaniam、card operation mode and FeliCa mechanism;
- Use IIC communicate method.
| PN532 |
Microduino
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| GND |
GND
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| VCC |
3V3
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| SDA |
SDA
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| SCL |
SCL
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Document
Development
Library：
https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Libraries/_03_Microduino_NFC_PN532
Test program：
https://github.com/Microduino/Microduino_Tutorials/commit/f642ac523261cc08f58d9c521f5806b19c02ce15
Application
Use the test program to write data to NFC. Note: this program only can read ISO14443A four bytes label
- Prepared hardware：Microduino FT232R, Microduino Core and Microduino NRF
- Prepared software：Adafruit_NFCShield_I2C library and Arduino IDE；
- Download the library and test program, uncompress the library and copy to libraries folder of Arduino IDE;
- Open the ”Microduino_Write_cards” test program, compile it and select the "Microduino Core (Atmega328P@16M,5V)" to download；
- Open the serial monitor, select the baud rate, if successed, serial will retuen some data and print “Please press 'f' to format.....”、“Please press 'r' to Rewrite data......”；
- Step 1：Input ’f’ to format the label, you can see the format progress;
- Step 2：Input ’r’ to rewrite new data, if successed, then return ”Writing URI to sector 1 as an NDEF Message”. If failed, repeat from step 1 until data was wrote successfully.
- Use a mobile phone with NFC label to test
- There are three wrote data:
- Network address
- const char * url = "microduino.cc";
- uint8_t ndefprefix = NDEF_URIPREFIX_HTTP_WWWDOT;
- Mail
- const char * url = "mail@example.com";
- uint8_t ndefprefix = NDEF_URIPREFIX_MAILTO;
- Phone number
- const char * url = "51508987";
- uint8_t ndefprefix = NDEF_URIPREFIX_TEL;
User can choose in the program, the annotation of "//" can be deleted, and can define your own content.
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