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  • Author Author: mubeen.abbas
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NFC Products: IoT solution made easy with NFC 1: NFC commissioning solution with the NTAG I²C plus kit for Arduino pinout

mubeen.abbas

The Internet of Things or IoT is a buzzword these days.

 

Generally speaking, IoT refers to all kind of objects…. from medical equipment, appliances, wearables, meters, to cars….  which get equipped with sensors and network capabilities so they are able to collect and exchange data.

 

The Internet of Things does not refer to any specific technology, but actually, it is made of many technologies working together in the direction to…. increase automation, safety and efficiency of everyday tasks.

 

Today, the growing number of NFC smartphones enables intuitive interaction with just a tap to your smart device.

Take the Smart Home example: very often complexity comes with the first setup of devices that are as diverse as the standards under which they operate. NFC provides simplicity in the entire home network. With just a tap, new objects and devices are easily connected to the network. NFC is perfectly complementary with the other wireless technologies whether it's ZigBee, WiFi, Bluetooth, or any other RF protocol.

The newly released OM23221ARD NTAG I2C plus kit for Arduino pinout further simplifies the integration of NFC with many MCU families.

 

What you’ll learn

 

This webinar covers details of how NFC overcomes the cumbersome network commissioning process.

 

Related Products

OM23221ARD NTAG I2C plus kit for Arduino pinout

 

Have a question

 

Ask NFC community, get expert advice from the developer community

 

Course Outline

  • IoT and smart home adoption today.
  • NFC commissioning solution.
  • NXP product offering for smart home.
  • Overview of the new NTAG I2C plus kit for Arduino pinout.

 

Watch Webinar Video Here : https://www.nxp.com/video/:L:IOT-ARDUINO-NFC

 

 

Attachments:
image02 Webinar slides - NFC commissioning solution with NTAG I2C.pdf

  • I have just discovered how easy it really is to use the NTAG I2C device to store and use your network's WiFi details with a MKR1000, for example.

     

    In fact I made 2 discoveries today.

     

    The first was with my Android phone.

     

    If you long press on the wifi connection in settings the phone gives you an option to write the wifi details to a NFC tag directly. No need for an app. All it asks for is the wifi connection password for confirmation and then it waits until it detects a NFC tag.

     

    The second discovery was how the details are stored and how easy it was to read this data from the NTAG EEPROM via the I2C bus.

     

    When the phone writes the data to the NTAG it starts storing the data in the first block and write sequentially.

     

    To read the data via I2C bus I used this library and modified one of the EEPROM read examples https://github.com/LieBtrau/arduino-ntag

     

    To determine if it is WiFi details for example rather than some other NDEF format I found that the data will start with "application/vnd.wfa.wsc"

     

    Then I found it is a matter if parsing based on some predefined byte values. I found using a combination of 0x00, 0x09 and 0x10 allowed me to very easily extract out the SSID and password for my network and use this data with my MKR1000 as the MKR1000 can read this NTAG via I2C.

     

    What also makes this an exciting proposition, other than cost, is that you potentially can password protect the NTAG EEPROM thereby making it more secure than say standard EEPROM on an MCU. I have yet to test this.