main.cpp

00001 /**
00002   ******************************************************************************
00003   * @file       main.cpp
00004   * @date       22/01/2016
00005   * @brief      Test the async comunication api
00006   ******************************************************************************
00007   *
00008   * COPYRIGHT(c) 2015 STMicroelectronics
00009   *
00010   * Redistribution and use in source and binary forms, with or without modification,
00011   * are permitted provided that the following conditions are met:
00012   *   1. Redistributions of source code must retain the above copyright notice,
00013   *      this list of conditions and the following disclaimer.
00014   *   2. Redistributions in binary form must reproduce the above copyright notice,
00015   *      this list of conditions and the following disclaimer in the documentation
00016   *      and/or other materials provided with the distribution.
00017   *   3. Neither the name of STMicroelectronics nor the names of its contributors
00018   *      may be used to endorse or promote products derived from this software
00019   *      without specific prior written permission.
00020   *
00021   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00022   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00023   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00024   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00025   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00026   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00027   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00028   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00029   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00030   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031   *
00032   ******************************************************************************
00033   */
00034 
00035 #include "mbed.h"
00036 #include "XNucleoNFC01A1.h"
00037 #include "ReadUriCallbacks.h"
00038 #include "WriteUriCallbacks.h"
00039 #include "NDefNfcTagM24SR.h"
00040 #include "NDefLib/RecordType/RecordURI.h"
00041 
00042 Thread thread;
00043 
00044 /** flag to signal an interrupt from the nfc component*/
00045 #define NFC_INTERRUPT_FLAG    0x1
00046  
00047 /** flag to signal user button pressure*/
00048 #define BUTTON_PRESSED_FLAG   0x2
00049 
00050 
00051 NDefLib::NDefNfcTag *tag;
00052 
00053 XNucleoNFC01A1 *nfcNucleo;
00054  
00055 /** Nfc ISR called when the nfc component has a message ready*/
00056 static void nfc_interrupt_callback() {
00057     thread.signal_set(NFC_INTERRUPT_FLAG);
00058 }//nfcInterruptCallback
00059  
00060 /** ISR handling button pressure **/ 
00061 static void set_button_press() {
00062     thread.signal_set(BUTTON_PRESSED_FLAG);    
00063 }//buttonPressed event
00064 
00065 
00066 void handleEvents() {
00067     //create the callback to read a tag
00068     ReadUriCallbacks NDefReadCallback(nfcNucleo->get_led1(),nfcNucleo->get_led2(),nfcNucleo->get_led3());
00069     while (true) {
00070         osEvent event = thread.signal_wait(0); // wait for any event
00071         if (event.value.v == NFC_INTERRUPT_FLAG) {
00072             nfcNucleo->get_M24SR().manage_event();
00073         } else if (event.value.v == BUTTON_PRESSED_FLAG) {
00074             printf("Button pressed! Reading the Tag.\n\r");
00075             tag->set_callback(&NDefReadCallback);
00076             tag->open_session();
00077         }
00078     }
00079 }
00080  
00081 int main() {
00082     
00083 #if defined(TARGET_STM)
00084     InterruptIn userButton(USER_BUTTON);    
00085     userButton.fall(set_button_press);
00086 #endif
00087  
00088     //create the nfc component
00089     I2C i2cChannel(XNucleoNFC01A1::DEFAULT_SDA_PIN,XNucleoNFC01A1::DEFAULT_SDL_PIN);
00090 
00091     nfcNucleo = XNucleoNFC01A1::instance(i2cChannel,&nfc_interrupt_callback,
00092         XNucleoNFC01A1::DEFAULT_GPO_PIN,XNucleoNFC01A1::DEFAULT_RF_DISABLE_PIN,
00093         XNucleoNFC01A1::DEFAULT_LED1_PIN,XNucleoNFC01A1::DEFAULT_LED2_PIN,
00094         XNucleoNFC01A1::DEFAULT_LED3_PIN);
00095  
00096     //No call back needed since default behavior is sync
00097     nfcNucleo->get_M24SR().get_session();
00098     nfcNucleo->get_M24SR().manage_I2C_GPO(M24SR::I2C_ANSWER_READY); //switch to async mode
00099  
00100     tag = &(nfcNucleo->get_M24SR().get_NDef_tag());
00101     printf("System Init done!\n\r");
00102     
00103      //Start the event handling thread
00104     thread.start(handleEvents);
00105     
00106     //create the callback to write a tag
00107     WriteUriCallbacks NDefWriteCallback(nfcNucleo->get_led1(),nfcNucleo->get_led2(),nfcNucleo->get_led3());
00108     // write the tag
00109     tag->set_callback(&NDefWriteCallback); //set the callback
00110     printf("Writing Tag\n\r");
00111     tag->open_session();
00112       
00113     while (true) {
00114         __WFE();
00115     }  
00116 
00117 }