Revision 17:22e6c00f3a4c, committed 2016-08-31

Comitter:

giovannivisentini

Date:

Wed Aug 31 11:23:41 2016 +0000

Parent:

16:0ab6bf9abd5a

Child:

19:2e9835fbd14f

Commit message:

add example for read the NFC message from the tag

Changed in this revision

--- a/NDefLib.lib	Wed Feb 03 10:17:14 2016 +0000
+++ b/NDefLib.lib	Wed Aug 31 11:23:41 2016 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/teams/ST/code/NDefLib/#030e7ffdf512
+https://developer.mbed.org/teams/ST/code/NDefLib/#46899fa3d9f2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NDefLib.lib.orig	Wed Aug 31 11:23:41 2016 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/teams/ST/code/NDefLib/#030e7ffdf512

--- a/main.cpp	Wed Feb 03 10:17:14 2016 +0000
+++ b/main.cpp	Wed Aug 31 11:23:41 2016 +0000
@@ -43,19 +43,12 @@
 
 /**
  * Write a Ndef URI message linking to st.com site.
- */
-int main(void){
-    
-    //use default board pinout
-    I2C i2cChannel(X_NUCLEO_NFC01A1::DEFAULT_SDA_PIN,X_NUCLEO_NFC01A1::DEFAULT_SDL_PIN);
-    X_NUCLEO_NFC01A1 *nfcNucleo = X_NUCLEO_NFC01A1::Instance(i2cChannel,NULL,
-            X_NUCLEO_NFC01A1::DEFAULT_GPO_PIN,X_NUCLEO_NFC01A1::DEFAULT_RF_DISABLE_PIN,
-            X_NUCLEO_NFC01A1::DEFAULT_LED1_PIN,X_NUCLEO_NFC01A1::DEFAULT_LED2_PIN,
-            X_NUCLEO_NFC01A1::DEFAULT_LED3_PIN);
-    
+ * Write an NDef message with a Uri record linking the st.com site
+ * @param nfcNucleo expansion board where write the NDef message
+ */  
+static void writeUrl(X_NUCLEO_NFC01A1 *nfcNucleo){
     //retrieve the NdefLib interface
-    NDefLib::NDefNfcTag& tag =nfcNucleo->getM24SR().getNDefTag();
-    printf("System Init done: !\n\r");
+    NDefLib::NDefNfcTag& tag = nfcNucleo->getM24SR().getNDefTag();
     
     //open the i2c session with the nfc chip
     if(tag.openSession()){
@@ -85,4 +78,93 @@
             
     }else
         printf("Error opening the session\n\r");
-}
\ No newline at end of file
+}
+
+/**
+ * Read a NDef message and print content and type of all the uri record inside 
+ * the message
+ * @param nfcNucleo expansion board from where read the message
+ */
+static void readUrl(X_NUCLEO_NFC01A1 *nfcNucleo){
+    //retrieve the NdefLib interface
+    NDefLib::NDefNfcTag& tag = nfcNucleo->getM24SR().getNDefTag();
+    
+    //open the i2c session with the nfc chip
+    if(tag.openSession()){
+        printf("Session opened\n\r");
+        nfcNucleo->getLed1()=1;
+        
+        //create the NDef message and record
+        NDefLib::Message msg;
+        
+        //read the tag
+        if(tag.read(&msg)){
+            const uint32_t nRecords = msg.getNRecords();
+            printf("Tag read: %d record\n\r",msg.getNRecords());
+            for(int i =0 ;i<nRecords ;i++){
+                if(msg[i]->getType()== NDefLib::Record::TYPE_URI){
+                    NDefLib::RecordURI *rUri = (NDefLib::RecordURI *)msg[i];
+                    printf("UriType: %x\n\rUriContent: %s\n\r",
+                        rUri->getUriId(),
+                        rUri->getContent().c_str());
+                }//if
+            }//for
+            //free the read records
+            NDefLib::Message::removeAndDeleteAllRecord(msg);
+        }else{
+            printf("Error Reading \n\r");
+        }//if-else
+
+        //close the i2c session
+        if(tag.closeSession()){
+           printf("Session closed\n\r");
+           nfcNucleo->getLed3()=1;
+        }else{
+           printf("Error closing the session\n\r");
+        }//if-else
+            
+    }else
+        printf("Error opening the session\n\r");
+}
+
+static volatile bool buttonPress=false;
+
+static void setButtonPress(){
+    buttonPress=true;
+}//if buttonPress
+
+/**
+ * Write a Ndef URI message linking to st.com site and than read the message from
+ * the Nfc tag.
+ * 
+ */
+int main(void){
+    
+    //use default board pinout
+    I2C i2cChannel(X_NUCLEO_NFC01A1::DEFAULT_SDA_PIN,X_NUCLEO_NFC01A1::DEFAULT_SDL_PIN);
+    X_NUCLEO_NFC01A1 *nfcNucleo = X_NUCLEO_NFC01A1::Instance(i2cChannel,NULL,
+            X_NUCLEO_NFC01A1::DEFAULT_GPO_PIN,X_NUCLEO_NFC01A1::DEFAULT_RF_DISABLE_PIN,
+            X_NUCLEO_NFC01A1::DEFAULT_LED1_PIN,X_NUCLEO_NFC01A1::DEFAULT_LED2_PIN,
+            X_NUCLEO_NFC01A1::DEFAULT_LED3_PIN);
+    
+    printf("System Init done: !\n\r");
+    
+    // write an URI message
+    writeUrl(nfcNucleo);
+    
+//if run on a nucleo board enable the user button for read the ndef record
+#if defined(TARGET_STM)
+    InterruptIn userButton(USER_BUTTON);    
+    userButton.fall(setButtonPress);
+     while(true){
+        if(buttonPress){
+            readUrl(nfcNucleo);
+            buttonPress=false;
+        }//if
+        //wait next event
+        __WFE();
+    }//while
+#else
+    readUrl(nfcNucleo);
+#endif
+}