5 years, 10 months ago.

EventLoop, EventQueue and Thread

AnalogIn ain(PA_0); Pin A0

EventQueue queue; Thread thread, thread1; Timer timer; int count = 0;

void outside_isr() {

count = count + 1;

pc.printf("%.3f seconds\n", timer.read()); pc.printf("%d pulse\n", count); }

void rise_handler() { timer.reset(); timer.start(); }

void fall_handler() {

timer.stop(); queue.call(outside_isr); }

void signal() {

bool flag = false;

while(1) { if (ain > 0.93f) { if (flag == false) { flag = true; rise_handler(); } } if (ain < 0.93f) { if (flag == true) { flag = false; fall_handler(); } } } }

int main () {

thread1.start(callback(signal)); thread.start(callback(&queue, &EventQueue::dispatch_forever));

while(1) {}

}

A new bird to Mbed OS 5 and confused about how to use event thread, event queue as well as the event loop. How can I make the EventThread run only one time and only when fall_handler() is executed?