main.cpp

00001 #include "mbed.h"
00002 
00003 DigitalOut led1(LED1);
00004 InterruptIn button(USER_BUTTON);
00005 EventQueue queue(32 * EVENTS_EVENT_SIZE);
00006 Thread t;
00007 volatile static time_t begin;
00008 volatile static int pressCount = 0;
00009 
00010 void blinkLed1(void){
00011     led1 = 1;
00012     wait(0.5);
00013     led1 = 0;
00014 }
00015 
00016 void rise_handler_thread_context(void) {
00017     printf("Button pressed. count = %d\n", pressCount);
00018     if(pressCount == 1){
00019         begin = time(NULL);
00020     }else{
00021         pressCount = 0;
00022         if(time(NULL) - begin < 2){
00023             printf("Blinking");
00024             blinkLed1();
00025         }
00026     }
00027 }
00028 
00029 void rise_handler_iterrupt_context(void) {
00030     pressCount += 1;
00031     queue.call(rise_handler_thread_context);
00032 }
00033 
00034 int main() {
00035     // Start the event queue
00036     t.start(callback(&queue, &EventQueue::dispatch_forever));
00037     printf("Starting in context %p\r\n", Thread::gettid());
00038     // The 'rise' handler will execute in IRQ context
00039     button.rise(rise_handler_iterrupt_context);
00040 }