main.cpp

00001 /**
00002   ******************************************************************************
00003   * @file       main.cpp
00004   * @author     AMG Central Lab
00005   * @version    V1.0.0
00006   * @date       30 Aug 2016
00007   * @brief      This demo writes an ndef message with an url inside.
00008   ******************************************************************************
00009   * @attention
00010   *
00011   * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
00012   *
00013   * Redistribution and use in source and binary forms, with or without modification,
00014   * are permitted provided that the following conditions are met:
00015   *   1. Redistributions of source code must retain the above copyright notice,
00016   *      this list of conditions and the following disclaimer.
00017   *   2. Redistributions in binary form must reproduce the above copyright notice,
00018   *      this list of conditions and the following disclaimer in the documentation
00019   *      and/or other materials provided with the distribution.
00020   *   3. Neither the name of STMicroelectronics nor the names of its contributors
00021   *      may be used to endorse or promote products derived from this software
00022   *      without specific prior written permission.
00023   *
00024   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00025   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00026   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00027   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00028   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00029   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00030   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00031   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00032   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00033   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00034   *
00035   ******************************************************************************
00036   */
00037 
00038 #include "mbed.h"
00039 #include "XNucleoNFC02A1.h"
00040 #include "DevI2C.h"
00041 #include "NDefLib/NDefNfcTag.h"
00042 #include "NDefLib/RecordType/RecordURI.h"
00043 
00044 static volatile bool buttonPress = false; // true when the user press the message
00045 
00046 /**
00047  * Callback for button press.
00048  */
00049 static void set_button_press() {
00050   buttonPress = true;
00051 } //if buttonPress
00052 
00053 /**
00054  * Reading and printing NFC tag.
00055  */
00056 static void read_and_print_nfc_tag(NDefLib::NDefNfcTag &tag) {
00057   using namespace NDefLib;
00058 
00059   if (tag.open_session() == true) {
00060     printf("Open Session\r\n");
00061     NDefLib::Message readMsg;
00062 
00063     tag.read(&readMsg);
00064     printf("Message Read\r\n");
00065 
00066     if (readMsg.get_N_records()==0) {
00067       printf("Error Read\r\n");
00068     } else {
00069       for (uint32_t i=0;i<readMsg.get_N_records();i++) {
00070         Record *r = readMsg[i];
00071         //printRecord(r);
00072         RecordURI *const temp = (RecordURI*)r;
00073         printf("Read uriId: %d\r\n",temp->get_uri_id());
00074         printf("Read uriType: %s\r\n",temp->get_uri_type().c_str());
00075         printf("Read uriContent: %s\r\n",temp->get_content().c_str());
00076         delete r;
00077       } //for
00078     } //if-else
00079 
00080     tag.close_session();
00081     printf("Close session\r\n");
00082   } else {
00083     printf("Error open read Session\n\r");
00084   }
00085 }
00086 
00087 /**
00088  * Writing a Ndef URI message linking to the "st.com" website.
00089  */
00090 int main(void)
00091 {
00092   /* Using default board pinout. */
00093   DevI2C i2cChannel(XNucleoNFC02A1::DEFAULT_SDA_PIN,XNucleoNFC02A1::DEFAULT_SDL_PIN);
00094   XNucleoNFC02A1 *nfcNucleo = XNucleoNFC02A1::instance(i2cChannel,
00095                                                        XNucleoNFC02A1::DEFAULT_GPO_PIN,XNucleoNFC02A1::DEFAULT_RF_DISABLE_PIN,
00096                                                        XNucleoNFC02A1::DEFAULT_LED1_PIN,XNucleoNFC02A1::DEFAULT_LED2_PIN,
00097                                                        XNucleoNFC02A1::DEFAULT_LED3_PIN);
00098   
00099   NDefLib::NDefNfcTag& tag =nfcNucleo->get_M24LR().get_NDef_tag();
00100   M24LR & mM24LRp = nfcNucleo->get_M24LR();
00101   
00102   /* Enabling Energy Harvesting. */
00103   mM24LRp.enable_energy_harvesting();
00104   
00105   printf("System Initialization done: !\n\r");
00106   
00107   /* Opening the i2c session with the nfc chip. */
00108   if (tag.open_session() == true) {
00109     printf("Session opened\n\r");
00110     nfcNucleo->get_led1() = 1;
00111     
00112     /* Creating the NDef message and record. */
00113     NDefLib::Message msg;
00114     NDefLib::RecordURI rUri(NDefLib::RecordURI::HTTP_WWW,"st.com/st25");
00115     msg.add_record(&rUri);
00116     
00117     /* Writing the tag. */
00118     if (tag.write(msg) == true) {
00119       printf("Tag written\n\r");
00120       nfcNucleo->get_led2() = 1;
00121     } else {
00122       printf("Error writing \n\r");
00123       nfcNucleo->get_led1() = 0;
00124     } //if-else
00125     
00126     /* Closing the i2c session. */
00127     if (tag.close_session() == true) {
00128       printf("Session closed\n\r");
00129       nfcNucleo->get_led3() = 1;
00130     } else {
00131       printf("Error closing the session\n\r");
00132     } //if-else
00133   } else {
00134     printf("Error opening the session\n\r");
00135   }
00136   
00137 #if defined(TARGET_STM)
00138   /* enable the button */
00139   InterruptIn mybutton(USER_BUTTON);
00140   
00141   mybutton.fall(set_button_press);
00142 
00143   /* Each second change the led status and see if the user press the button. */
00144   while(1) {
00145     if (buttonPress) {
00146       /* Writing the read message on console. */
00147       read_and_print_nfc_tag(tag);
00148       buttonPress=false;
00149     }
00150   }
00151 #else
00152   read_and_print_nfc_tag(tag);
00153 #endif
00154 }
00155 
00156 
00157 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/