X-NUCLEO-NFC02A1 Dynamic NFC Tag Expansion Board Firmware Package

Introduction

This firmware package includes Components Device Drivers, Board Support Package and example applications for STMicroelectronics X-NUCLEO-NFC02A1 Dynamic NFC Tag Expansion Board based on M24LR.

Example Application

This is just a simple "hello world" style program for the X-NUCLEO-NFC02A1 Dynamic NFC Tag Expansion Board. The program writes a URI link to the M24LR dynamic tag using the synchronous programming model. It then reads back the URI from the tag to display it on terminal. The URI can also be retrieved from an NFC enabled smartphone/tablet.

Diff: main.cpp

Revision:: 13:17208d6d9971
Parent:: 12:85bf9d143843

--- a/main.cpp	Tue Jul 11 15:26:04 2017 +0000
+++ b/main.cpp	Wed Jul 12 12:35:47 2017 +0000
@@ -36,133 +36,122 @@
   */
 
 #include "mbed.h"
-
 #include "XNucleoNFC02A1.h"
 #include "DevI2C.h"
 #include "NDefLib/NDefNfcTag.h"
 #include "NDefLib/RecordType/RecordURI.h"
 
-static volatile bool buttonPress=false; // true when the user press the message
+static volatile bool buttonPress = false; // true when the user press the message
+
+/**
+ * Callback for button press.
+ */
+static void set_button_press() {
+  buttonPress = true;
+} //if buttonPress
 
-static void set_button_press(){
-    buttonPress=true;
-}//if buttonPress
- 
- static void read_and_print_nfc_tag(NDefLib::NDefNfcTag &tag){
-    using namespace NDefLib;
+/**
+ * Reading and printing NFC tag.
+ */
+static void read_and_print_nfc_tag(NDefLib::NDefNfcTag &tag) {
+  using namespace NDefLib;
 
-    if(tag.open_session() == true){
-        printf("Open Session\r\n");
-        NDefLib::Message readMsg;
-
-        tag.read(&readMsg);
-        printf("Message Read\r\n");
+  if (tag.open_session() == true) {
+    printf("Open Session\r\n");
+    NDefLib::Message readMsg;
 
-        if(readMsg.get_N_records()==0){
-            printf("Error Read\r\n");
-        }else{
-            for(uint32_t i=0;i<readMsg.get_N_records();i++){
-                Record *r = readMsg[i];
-               // printRecord(r);
-                //-----
-                RecordURI *const temp = (RecordURI*)r;
-                printf("Read uriId: %d\r\n",temp->get_uri_id());
-                printf("Read uriType: %s\r\n",temp->get_uri_type().c_str());
-                printf("Read uriContent: %s\r\n",temp->get_content().c_str());
-                //------
-                delete r;
-            }//for
-        }//if-else
+    tag.read(&readMsg);
+    printf("Message Read\r\n");
 
-        tag.close_session();
-        printf("Close session\r\n");
-    }else{
-        printf("Error open read Session\n\r");
-    }
+    if (readMsg.get_N_records()==0) {
+      printf("Error Read\r\n");
+    } else {
+      for (uint32_t i=0;i<readMsg.get_N_records();i++) {
+        Record *r = readMsg[i];
+        //printRecord(r);
+        RecordURI *const temp = (RecordURI*)r;
+        printf("Read uriId: %d\r\n",temp->get_uri_id());
+        printf("Read uriType: %s\r\n",temp->get_uri_type().c_str());
+        printf("Read uriContent: %s\r\n",temp->get_content().c_str());
+        delete r;
+      } //for
+    } //if-else
+
+    tag.close_session();
+    printf("Close session\r\n");
+  } else {
+    printf("Error open read Session\n\r");
+  }
 }
 
 /**
- * Write a Ndef URI message linking to st.com site.
+ * Writing a Ndef URI message linking to the "st.com" website.
  */
-
 int main(void)
 {
-  
-  /*use default board pinout*/
-  DevI2C *i2cChannel = new DevI2C(XNucleoNFC02A1::DEFAULT_SDA_PIN,XNucleoNFC02A1::DEFAULT_SDL_PIN);
+  /* Using default board pinout. */
+  DevI2C i2cChannel(XNucleoNFC02A1::DEFAULT_SDA_PIN,XNucleoNFC02A1::DEFAULT_SDL_PIN);
   XNucleoNFC02A1 *nfcNucleo = XNucleoNFC02A1::instance(i2cChannel,
-                                                           XNucleoNFC02A1::DEFAULT_GPO_PIN,XNucleoNFC02A1::DEFAULT_RF_DISABLE_PIN,
-                                                           XNucleoNFC02A1::DEFAULT_LED1_PIN,XNucleoNFC02A1::DEFAULT_LED2_PIN,
-                                                           XNucleoNFC02A1::DEFAULT_LED3_PIN);
+                                                       XNucleoNFC02A1::DEFAULT_GPO_PIN,XNucleoNFC02A1::DEFAULT_RF_DISABLE_PIN,
+                                                       XNucleoNFC02A1::DEFAULT_LED1_PIN,XNucleoNFC02A1::DEFAULT_LED2_PIN,
+                                                       XNucleoNFC02A1::DEFAULT_LED3_PIN);
   
   NDefLib::NDefNfcTag& tag =nfcNucleo->get_M24LR().get_NDef_tag();
   M24LR & mM24LRp = nfcNucleo->get_M24LR();
   
-  /* Enable Energy Harvesting */
+  /* Enabling Energy Harvesting. */
   mM24LRp.enable_energy_harvesting();
   
   printf("System Initialization done: !\n\r");
   
-  /*open the i2c session with the nfc chip*/
-  if(tag.open_session() == true)
-  {
+  /* Opening the i2c session with the nfc chip. */
+  if (tag.open_session() == true) {
     printf("Session opened\n\r");
-    nfcNucleo->get_led1()=1;
+    nfcNucleo->get_led1() = 1;
     
-    /*create the NDef message and record*/
+    /* Creating the NDef message and record. */
     NDefLib::Message msg;
     NDefLib::RecordURI rUri(NDefLib::RecordURI::HTTP_WWW,"st.com/st25");
     msg.add_record(&rUri);
     
-    /*write the tag*/
-    if(tag.write(msg) == true)
-    {
+    /* Writing the tag. */
+    if (tag.write(msg) == true) {
       printf("Tag written\n\r");
-      nfcNucleo->get_led2()=1;
-    }
-    else
-    {
+      nfcNucleo->get_led2() = 1;
+    } else {
       printf("Error writing \n\r");
-      nfcNucleo->get_led1()=0;
-    }//if-else
-    
-    /*close the i2c session*/
-    if(tag.close_session() == true)
-    {
-      printf("Session closed\n\r");
-      nfcNucleo->get_led3()=1;
-    }
-    else
-    {
-      printf("Error closing the session\n\r");
-    }//if-else
+      nfcNucleo->get_led1() = 0;
+    } //if-else
     
+    /* Closing the i2c session. */
+    if (tag.close_session() == true) {
+      printf("Session closed\n\r");
+      nfcNucleo->get_led3() = 1;
+    } else {
+      printf("Error closing the session\n\r");
+    } //if-else
+  } else {
+    printf("Error opening the session\n\r");
   }
-  else
-    printf("Error opening the session\n\r");
-          
+  
 #if defined(TARGET_STM)
-    /* enable the button */
-    InterruptIn mybutton(USER_BUTTON);
-    
-    mybutton.fall(set_button_press);
+  /* enable the button */
+  InterruptIn mybutton(USER_BUTTON);
+  
+  mybutton.fall(set_button_press);
 
-    /*each second change the led status and see if the user press the button*/
-    while(1) 
-    {
-        if(buttonPress)
-        {
-            /*write the read message on console*/
-            read_and_print_nfc_tag(tag);
-            buttonPress=false;
-        }
+  /* Each second change the led status and see if the user press the button. */
+  while(1) {
+    if (buttonPress) {
+      /* Writing the read message on console. */
+      read_and_print_nfc_tag(tag);
+      buttonPress=false;
     }
+  }
 #else
-    read_and_print_nfc_tag(tag);
+  read_and_print_nfc_tag(tag);
 #endif
 }
 
 
-
-
 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/