ST / Mbed 2 deprecated NFC01A1_Demos

This application provides a set of demos with X-NUCLEO-NFC01A1 expansion board.

Dependencies:   NDefLib X_NUCLEO_NFC01A1 mbed

Fork of X-MBED-NFC1 by Giovanni Visentini

This application provides a set of demos with X-NUCLEO-NFC01A1 expansion board.

The available demos are:

  • SAMPLE_WRITE_URL: write a tag with the ST home page URL
  • SAMPLE_COUNT_CLICK: create a custom tag to count and report the user button clicks.
  • SAMPLE_WRITE_AND_CHANGE_ALL: write a tag with all the supported records and update the tag contents when the user button is pressed.
  • SAMPLE_LOCK_TAG_CONTENT: use the M24SR component API to set the NFC tag as read-only.

To enable the different demos comment/uncomment the SAMPLE_* macros provided in main.cpp .

Samples/Sample_countClick.cpp

Committer:
giovannivisentini
Date:
2015-12-03
Revision:
4:f40b3505070c
Child:
5:3b300c8235b7

File content as of revision 4:f40b3505070c:


#include "mbed.h"

#include "Type4NfcTagSTM24SR.h"
#include "NDefLib/RecordType/RecordText.h"

#include "X_NUCLEO_NFC01A1.h"

class MyRecord : public NDefLib::RecordText{
    
private:
    char nClickStringBuffer[12];
    uint32_t nClick;
    
    void syncTextValue(){
        sprintf(nClickStringBuffer,"%d",nClick);
        setText(nClickStringBuffer);
    }
        
public: 
    
    MyRecord():nClick(0){
        syncTextValue();
    }
    
    void incrementClick(){
        nClick++;
        syncTextValue();
    }

};

static void writeMessage(X_NUCLEO_NFC01A1 *nfcNucleo,NDefLib::Message &msg){
    Type4NfcTagSTM24SR tag(nfcNucleo->getM24SR());
    //open the i2c session with the nfc chip
    if(tag.openSession()){
        nfcNucleo->getLed1()=! nfcNucleo->getLed1();
        
        //write the tag
        if(tag.write(msg)){
            nfcNucleo->getLed2()=!nfcNucleo->getLed2();
        }//if

        //close the i2c session
        if(tag.closeSession())
            nfcNucleo->getLed3()=!nfcNucleo->getLed3();
    }//if open session
}//writeMessage


static volatile bool buttonPress=false;

static void setButtonPress(){
    buttonPress=true;
}//if buttonPress

void sample_countClick() {
    I2C i2cChannel(X_NUCLEO_NFC01A1::DEFAULT_SDA_PIN,X_NUCLEO_NFC01A1::DEFAULT_SDL_PIN);
    i2cChannel.frequency(400000);

    X_NUCLEO_NFC01A1 *nfcNucleo = X_NUCLEO_NFC01A1::Instance(i2cChannel);
    //create the wrapper for use the NdefLib
    Type4NfcTagSTM24SR tag(nfcNucleo->getM24SR());
    
    InterruptIn userButton(USER_BUTTON);    
    userButton.fall(setButtonPress);
    
    //create the NDef message and record
    NDefLib::Message msg;
    MyRecord rClickCount;
    msg.addRecord(&rClickCount);
    
    writeMessage(nfcNucleo,msg);
    
    while(true){
        
        if(buttonPress){
            rClickCount.incrementClick();
            writeMessage(nfcNucleo,msg);            
            buttonPress=false;
        }//if
        //wait next event
        __WFE();
    }//while

}//sample_countClick