Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Dependencies: NDefLib X_NUCLEO_NFC01A1
Fork of
mbed-os-example-NFC01A1
by 
Nicola Capovilla
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.
Revision 2:e06d881b4b3c, committed 2017-08-11
- Comitter:
- nikapov
- Date:
- Fri Aug 11 09:19:31 2017 +0000
- Parent:
- 1:951cd8fbff34
- Commit message:
- Use one thread only to handle the events.
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Fri Aug 11 07:58:12 2017 +0000
+++ b/main.cpp Fri Aug 11 09:19:31 2017 +0000
@@ -39,8 +39,7 @@
#include "NDefNfcTagM24SR.h"
#include "NDefLib/RecordType/RecordURI.h"
-Thread nfcReadThread;
-Thread nfcEventsThread;
+Thread thread;
/** flag to signal an interrupt from the nfc component*/
#define NFC_INTERRUPT_FLAG 0x1
@@ -55,40 +54,28 @@
/** Nfc ISR called when the nfc component has a message ready*/
static void nfc_interrupt_callback() {
- nfcEventsThread.signal_set(NFC_INTERRUPT_FLAG);
+ thread.signal_set(NFC_INTERRUPT_FLAG);
}//nfcInterruptCallback
/** ISR handling button pressure **/
static void set_button_press() {
- nfcReadThread.signal_set(BUTTON_PRESSED_FLAG);
+ thread.signal_set(BUTTON_PRESSED_FLAG);
}//buttonPressed event
-void nfcEvents() {
- while (true) {
- osEvent event = nfcEventsThread.signal_wait(NFC_INTERRUPT_FLAG); // wait for nfc event
- //printf("Got an NFC event!\n\r");
- nfcNucleo->get_M24SR().manage_event();
- }
-}
-
-void readNfc() {
-
+void handleEvents() {
//create the callback to read a tag
ReadUriCallbacks NDefReadCallback(nfcNucleo->get_led1(),nfcNucleo->get_led2(),nfcNucleo->get_led3());
- //create the callback to write a tag
- WriteUriCallbacks NDefWriteCallback(nfcNucleo->get_led1(),nfcNucleo->get_led2(),nfcNucleo->get_led3());
- // write the tag
- printf("Writing Tag\n\r");
- tag->open_session();
-
while (true) {
- osEvent event = nfcReadThread.signal_wait(BUTTON_PRESSED_FLAG); // wait for button pressed
- printf("Button pressed! Reading the Tag.\n\r");
- tag->set_callback(&NDefReadCallback);
- tag->open_session();
+ 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() {
@@ -113,10 +100,15 @@
tag = &(nfcNucleo->get_M24SR().get_NDef_tag());
printf("System Init done!\n\r");
- //Start the nfc event handling thread
- nfcEventsThread.start(nfcEvents);
- //Start the nfc reading thread - also writes the tag once
- nfcReadThread.start(readNfc);
+ //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();