X-NUCLEO-NFC01A1 Dynamic NFC Tag Expansion Board Firmware Package

Diff: main.cpp

Revision:

4:416db8919ca4

Parent:

2:48e58c5086e8

Child:

5:adf7d29c9431

--- a/main.cpp	Wed Feb 03 10:21:48 2016 +0000
+++ b/main.cpp	Wed Aug 31 11:18:55 2016 +0000
@@ -38,6 +38,21 @@
 #include "m24sr/NDefNfcTagM24SR.h"
 #include "NDefLib/RecordType/RecordURI.h"
 
+/** variable set to true when we receive an interrupt from the nfc component*/
+static volatile bool nfcInterruptFlag=false;
+
+/** variable set to true when the user press the board user button*/
+static volatile bool buttonPress=false;
+
+/** Nfc ISR called when the nfc component has a message ready*/
+static void nfcInterruptCallback(){
+    nfcInterruptFlag=true;
+}//nfcInterruptCallback
+
+static void setButtonPress(){
+    buttonPress=true;
+}//if buttonPress
+
 /**
  * Chain of callback that will crate a Uri record and write it.
  * After each operation the class will switch on a led
@@ -47,6 +62,7 @@
     DigitalOut &mOnOpenSession;
     DigitalOut &mOnWrite;
     DigitalOut &mOnCloseSession;
+    NDefLib::Message msg;
 
 public:
 
@@ -72,8 +88,7 @@
         printf("Session opened\r\n");
         //ask to have an interrupt when the command finish
         mOnOpenSession=1;
-        NDefLib::Message msg;
-
+        
         NDefLib::RecordURI rUri(NDefLib::RecordURI::HTTP_WWW,"http://www.st.com");
         msg.addRecord(&rUri);
 
@@ -105,7 +120,91 @@
      */
     virtual void onSessionClose(NDefLib::NDefNfcTag*,bool success){
         if(success){
+            printf("Session closed\r\n");
+            mOnCloseSession=1;
+        }else
             printf("Error closing the session\r\n");
+    }
+
+};
+
+/**
+ * Chain of callback that will read a NDef Message and print all the
+ * record of type URI.
+ * After each operation the class will switch on a led
+ */
+class ReadUriCallbacks : public NDefLib::NDefNfcTag::Callbacks{
+
+    DigitalOut &mOnOpenSession;
+    DigitalOut &mOnRead;
+    DigitalOut &mOnCloseSession;
+
+    NDefLib::Message mMsg;
+
+public:
+
+    /**
+     * create the callback chain
+     * @param onOpenSession led to switch on when the session open
+     * @param onWrite led to switch on when the write end
+     * @param onCloseSession led to switch on when the session end
+     */
+    ReadUriCallbacks(DigitalOut &onOpenSession,DigitalOut &onRead,
+            DigitalOut &onCloseSession):mOnOpenSession(onOpenSession),
+                    mOnRead(onRead),mOnCloseSession(onCloseSession){};
+
+    /**
+     * crate the new message and write it
+     * @param tag tag where write the message
+     * @param success true if the session correctly open
+     */
+    virtual void onSessionOpen(NDefLib::NDefNfcTag *tag,bool success){
+        if(!success){
+            printf("Error opening the session\r\n");
+        }//else
+        printf("Session opened\r\n");
+        //ask to have an interrupt when the command finish
+        mOnOpenSession=1;
+        
+        tag->read(&mMsg);
+    }
+
+    /**
+     * request to close the session
+     * @param tag tag where close the session
+     * @param success true if the message is correctly wrote
+     * @param message wrote
+     */
+    virtual void onMessageRead(NDefLib::NDefNfcTag *tag,bool success,
+            const NDefLib::Message*){
+
+        if(!success)
+            printf("Error Reading tag!\r\n");
+        else{
+            const uint32_t nRecords =mMsg.getNRecords();
+            printf("Read %d records!\r\n",nRecords);
+            for(uint32_t i=0;i<nRecords;i++){
+                if(mMsg[i]->getType()== NDefLib::Record::TYPE_URI){
+                    NDefLib::RecordURI *rUri = (NDefLib::RecordURI *)mMsg[i];
+                    printf("UriType: %x\r\nUriContent: %s\r\n",
+                        rUri->getUriId(),
+                        rUri->getContent().c_str());
+                }//if
+            }//for
+            NDefLib::Message::removeAndDeleteAllRecord(mMsg);
+            mOnRead=1;
+        }//if-else
+        tag->closeSession();
+    }
+
+    /**
+     * switch on the led
+     * @param tag where the session is closed
+     * @param success true if the session is correctly close
+     */
+    virtual void onSessionClose(NDefLib::NDefNfcTag*,bool success){
+        if(success){
+            printf("Session closed\r\n");
             mOnCloseSession=1;
         }else
             printf("Error opening the session\r\n");
@@ -113,17 +212,16 @@
 
 };
 
-/** variable set to true when we receive an interrupt from the nfc component*/
-static bool nfcInterruptFlag;
 
-/** Nfc ISR called when the nfc component has a message ready*/
-static void nfcInterruptCallback(){
-    nfcInterruptFlag=true;
-}//nfcInterruptCallback
 
 int main(int argc,char *args[]){
     (void)argc; (void)args;
 
+#if defined(TARGET_STM)
+    InterruptIn userButton(USER_BUTTON);    
+    userButton.fall(setButtonPress);
+#endif
+
     //create the nfc component
     I2C i2cChannel(X_NUCLEO_NFC01A1::DEFAULT_SDA_PIN,X_NUCLEO_NFC01A1::DEFAULT_SDL_PIN);
     X_NUCLEO_NFC01A1 *nfcNucleo = X_NUCLEO_NFC01A1::Instance(i2cChannel,&nfcInterruptCallback,
@@ -139,8 +237,9 @@
     printf("System Init done!\n\r");
 
     //crate the callback to use for write a tag
-    WriteUriCallbacks NDefCallback(nfcNucleo->getLed1(),nfcNucleo->getLed2(),nfcNucleo->getLed3());
-    tag.setCallback(&NDefCallback); //set the callback
+    WriteUriCallbacks NDefWriteCallback(nfcNucleo->getLed1(),nfcNucleo->getLed2(),nfcNucleo->getLed3());
+    ReadUriCallbacks NDefReadCallback(nfcNucleo->getLed1(),nfcNucleo->getLed2(),nfcNucleo->getLed3());
+    tag.setCallback(&NDefWriteCallback); //set the callback
     tag.openSession(); //start the callback chain
 
     printf("Start Main Loop\n\r");
@@ -151,6 +250,14 @@
             nfcNucleo->getM24SR().ManageEvent();
 
         }//if
+#if defined(TARGET_STM)
+        if(buttonPress){
+            buttonPress=false;
+            printf("Pressed");
+            tag.setCallback(&NDefReadCallback);
+            tag.openSession();
+        }
+#endif
         __WFE();
     }//while