查看“Microduino-NFC”的源代码

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[[File:Microduino-NFC-rect.jpg|400px|thumb|right|Microduino-NFC]]
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.
{|class="wikitable"
! rowspan="1" | 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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[[File:Microduino-NFC-pin.jpg|800px|thumb|center|Microduino-NFC]]


==Document==

*Chip：'''[[File:pn532.pdf]]'''

==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.

==Buy==

==History==

==Picture==

==Front==
[[file:Microduino-NRF-F.JPG|thumb|600px|center|Microduino-NRF Front]]
==Back==
[[file:Microduino-NRF-b.JPG|thumb|600px|center|Microduino-NRF Back]]
==Video==
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