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
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 .
Diff: Samples/SampleAsync_countClick.cpp
- Revision:
- 13:685d95525ec8
- Child:
- 14:3b604972b89f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Samples/SampleAsync_countClick.cpp Mon Feb 01 15:33:26 2016 +0000 @@ -0,0 +1,201 @@ +/** + ****************************************************************************** + * @file Sample_countClick.cpp + * @author ST / Central Labs + * @date 03 Dic 2015 + * @brief This demo define a custom record that contains the number of time the user + * press the user button + ****************************************************************************** + * + * 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 "MyRecord.h" + +/** + * class with the callback needed to update the record in the tag + */ +class WriteMyRecordCallback : public NDefLib::NDefNfcTag::Callback { + + /** + * board where change the led status + */ + X_NUCLEO_NFC01A1 *mNfcNucleo; + + /** + * message to write + */ + NDefLib::Message &mMsg; + + /** + * true if the message is wrote in the tag + */ + bool mCommandFinish; + + /** + * true if an update request is done while writing a tag + */ + bool mRequestRefresh; + + + public: + + /** + * build an object write an message into a nfc tag + * @param nfcNucleo board with the leds and nfc tag + * @param msg message to write + */ + WriteMyRecordCallback(X_NUCLEO_NFC01A1 *nfcNucleo,NDefLib::Message &msg): + mNfcNucleo(nfcNucleo),mMsg(msg),mCommandFinish(true), + mRequestRefresh(false){} + + /** + * start the write process + */ + void updateMessage(){ + if(mCommandFinish){ + mNfcNucleo->getM24SR().getNDefTag().openSession(); + }else// if it is doing something remember this request + mRequestRefresh=true; + }//updateMessage + + private: + + void onError(){ + printf("Error updating the tag\n\r"); + mCommandFinish=false; + } + + /** + * when the session is open change the led status and ask to write the message + */ + virtual void onSessionOpen(NDefLib::NDefNfcTag *tag,bool success){ + if(!success) + return onError(); + mNfcNucleo->getLed1()=!mNfcNucleo->getLed1(); + tag->write(mMsg); + } + + /** + * if the user ask for update the value it write again the message, otherwise close the session + */ + virtual void onMessageWrite(NDefLib::NDefNfcTag *tag,bool success, + const NDefLib::Message&){ + if(!success) + return onError(); + mNfcNucleo->getLed2()=!mNfcNucleo->getLed2(); + if(mRequestRefresh){ + mRequestRefresh=false; + tag->write(mMsg); + }else + tag->closeSession(); + //if-else + + }; + + /** + * if the user ask for update the value it open a new session + */ + virtual void onSessionClose(NDefLib::NDefNfcTag *tag,bool success){ + if(!success) + return onError(); + mNfcNucleo->getLed3()=!mNfcNucleo->getLed3(); + if(mRequestRefresh){ + mRequestRefresh=false; + tag->openSession(); + }else + mCommandFinish=true; + //if-else + }; + +}; + + +static volatile bool buttonPress=false; /// true when the user press the message +static volatile bool nfcEvent=false; /// true when the user press the message + +/** + * Call back called when the user press the button. + */ +static void setButtonPress(){ + buttonPress=true; +}//if buttonPress + +static void setNfcEventCallback(){ + nfcEvent=true; +}//if buttonPress + +/** + * Write a custom record that count how many times the user press the button. + */ +void sampleAsync_countClick() { + + //instance the board with the default parameters + I2C i2cChannel(X_NUCLEO_NFC01A1::DEFAULT_SDA_PIN,X_NUCLEO_NFC01A1::DEFAULT_SDL_PIN); + X_NUCLEO_NFC01A1 *nfcNucleo = X_NUCLEO_NFC01A1::Instance(i2cChannel,&setNfcEventCallback); + + //set the button interrupt + InterruptIn userButton(USER_BUTTON); + //InterruptIn userButton(SW1); + userButton.fall(setButtonPress); + + //No call back needed since default behavior is sync + //nfcNucleo->getM24SR().GetSession(); + //nfcNucleo->getM24SR().ManageI2CGPO(I2C_ANSWER_READY); //switch to async mode + + //create the NDef message and record + NDefLib::Message msg; + MyRecord rClickCount; + msg.addRecord(&rClickCount); + + WriteMyRecordCallback writeMyRecordCallback(nfcNucleo,msg); + + nfcNucleo->getM24SR().getNDefTag().setCallback(&writeMyRecordCallback); + writeMyRecordCallback.updateMessage(); + while(true){ + + if(buttonPress){ + buttonPress=false; + //change the record content + rClickCount.incrementClick(); + writeMyRecordCallback.updateMessage(); + }//if + if(nfcEvent){ + nfcEvent=false; + nfcNucleo->getM24SR().ManageEvent(); + }//if + //wait next event + __WFE(); + }//while + +}//sample_countClick +