Diff: Samples/SampleAsync_writeUrl.cpp

Revision:

13:685d95525ec8

Child:

14:3b604972b89f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Samples/SampleAsync_writeUrl.cpp	Mon Feb 01 15:33:26 2016 +0000
@@ -0,0 +1,158 @@
+/**
+  ******************************************************************************
+  * @file       Sample_writeUrl.cpp
+  * @author     ST / Central Labs
+  * @date       03 Dic 2015
+  * @brief      This demo write an ndef message with an url inside
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2015 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+  
+#include "mbed.h"
+
+#include "X_NUCLEO_NFC01A1.h"
+#include "NDefLib/NDefNfcTag.h"
+#include "NDefLib/RecordType/RecordURI.h"
+
+/**
+ * Chain of callback that will crate a Uri record and write it.
+ * After each operation the class will switch on a led
+ */
+class WriteUriCallbacks : public NDefLib::NDefNfcTag::Callback{
+
+	DigitalOut &mOnOpenSession;
+	DigitalOut &mOnWrite;
+	DigitalOut &mOnCloseSession;
+
+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
+	 */
+	WriteUriCallbacks(DigitalOut &onOpenSession,DigitalOut &onWrite,
+			DigitalOut &onCloseSession):mOnOpenSession(onOpenSession),
+					mOnWrite(onWrite),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 OpenSession\n\r");
+		}//else
+		printf("Session Open\n\r");
+		//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);
+
+		tag->write(msg);
+	}
+
+	/**
+	 * 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 onMessageWrite(NDefLib::NDefNfcTag *tag,bool success,
+			const NDefLib::Message&){
+
+		if(!success)
+			printf("Error writing tag!\n\r");
+		else{
+			printf("Tag Wrote!\n\r");
+			mOnWrite=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\n\r");
+			mOnCloseSession=1;
+		}else
+			printf("Error Session closed\n\r");
+	}
+
+};
+
+
+/** 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
+
+void sampleAsync_writeUrl(){
+	//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,
+			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);
+
+	//No call back needed since default behavior is sync
+	nfcNucleo->getM24SR().GetSession();
+	nfcNucleo->getM24SR().ManageI2CGPO(I2C_ANSWER_READY); //switch to async mode
+
+	NDefLib::NDefNfcTag &tag = nfcNucleo->getM24SR().getNDefTag();
+	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
+	tag.openSession(); //start the callback chain
+
+	printf("Start Main Loop\n\r");
+	while(true){
+		if(nfcInterruptFlag){
+			nfcInterruptFlag=false;
+			//manage an async event from the nfc component
+			nfcNucleo->getM24SR().ManageEvent();
+
+		}//if
+		__WFE();
+	}//while
+
+}
+