A simple mbed OS application providing an example of asynchronous access to the X-NUCLEO_NFC01A1 Dynamic NFC Tag board.
Dependencies: NDefLib X_NUCLEO_NFC01A1
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The application provides a simple example of asynchronous access to the X-NUCLEO-NFC01A1 Dynamic NFC Tag Expansion Board. It represents the multi-threaded mbed OS 5 version of the mbed classic HelloWorld_Async_NFC01A1 application.
The program writes a URI link to the M24SR dynamic tag using the asynchronous programming model.
The URI can then be read and printed on the serial console by pressing the user button and/or via RF from an NFC enabled smartphone/tablet.
main.cpp
- Committer:
- nikapov
- Date:
- 2017-08-11
- Revision:
- 2:e06d881b4b3c
- Parent:
- 1:951cd8fbff34
File content as of revision 2:e06d881b4b3c:
/** ****************************************************************************** * @file main.cpp * @date 22/01/2016 * @brief Test the async comunication api ****************************************************************************** * * 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 "XNucleoNFC01A1.h" #include "ReadUriCallbacks.h" #include "WriteUriCallbacks.h" #include "NDefNfcTagM24SR.h" #include "NDefLib/RecordType/RecordURI.h" Thread thread; /** flag to signal an interrupt from the nfc component*/ #define NFC_INTERRUPT_FLAG 0x1 /** flag to signal user button pressure*/ #define BUTTON_PRESSED_FLAG 0x2 NDefLib::NDefNfcTag *tag; XNucleoNFC01A1 *nfcNucleo; /** Nfc ISR called when the nfc component has a message ready*/ static void nfc_interrupt_callback() { thread.signal_set(NFC_INTERRUPT_FLAG); }//nfcInterruptCallback /** ISR handling button pressure **/ static void set_button_press() { thread.signal_set(BUTTON_PRESSED_FLAG); }//buttonPressed event void handleEvents() { //create the callback to read a tag ReadUriCallbacks NDefReadCallback(nfcNucleo->get_led1(),nfcNucleo->get_led2(),nfcNucleo->get_led3()); while (true) { osEvent event = thread.signal_wait(0); // wait for any event if (event.value.v == NFC_INTERRUPT_FLAG) { nfcNucleo->get_M24SR().manage_event(); } else if (event.value.v == BUTTON_PRESSED_FLAG) { printf("Button pressed! Reading the Tag.\n\r"); tag->set_callback(&NDefReadCallback); tag->open_session(); } } } int main() { #if defined(TARGET_STM) InterruptIn userButton(USER_BUTTON); userButton.fall(set_button_press); #endif //create the nfc component I2C i2cChannel(XNucleoNFC01A1::DEFAULT_SDA_PIN,XNucleoNFC01A1::DEFAULT_SDL_PIN); nfcNucleo = XNucleoNFC01A1::instance(i2cChannel,&nfc_interrupt_callback, XNucleoNFC01A1::DEFAULT_GPO_PIN,XNucleoNFC01A1::DEFAULT_RF_DISABLE_PIN, XNucleoNFC01A1::DEFAULT_LED1_PIN,XNucleoNFC01A1::DEFAULT_LED2_PIN, XNucleoNFC01A1::DEFAULT_LED3_PIN); //No call back needed since default behavior is sync nfcNucleo->get_M24SR().get_session(); nfcNucleo->get_M24SR().manage_I2C_GPO(M24SR::I2C_ANSWER_READY); //switch to async mode tag = &(nfcNucleo->get_M24SR().get_NDef_tag()); printf("System Init done!\n\r"); //Start the event handling thread thread.start(handleEvents); //create the callback to write a tag WriteUriCallbacks NDefWriteCallback(nfcNucleo->get_led1(),nfcNucleo->get_led2(),nfcNucleo->get_led3()); // write the tag tag->set_callback(&NDefWriteCallback); //set the callback printf("Writing Tag\n\r"); tag->open_session(); while (true) { __WFE(); } }