Diff: main.cpp

Revision:

0:03a01dc34973

Child:

1:bc20d07886cc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Nov 16 13:45:52 2018 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+
+DigitalOut led3(LED3);
+InterruptIn button(USER_BUTTON);
+EventQueue queue(32 * EVENTS_EVENT_SIZE);
+Thread t;
+int counter = 0;
+volatile time_t seconds_now;
+
+void rise_handler_thread_context(void) {
+    counter++;
+    if((time(NULL) - seconds_now) < 2000) {
+        if(counter == 2) {
+            led3 = !led3;
+            wait(0.8);
+            led3 = !led3;
+            counter = 0;
+            seconds_now = time(NULL);
+        }
+    } else {
+        seconds_now = time(NULL);
+        counter = 0;
+    }
+}
+
+void rise_handler_iterrupt_context(void) {
+    // Execute the time critical part first
+    // The rest can execute later in user context (and can contain code that's not interrupt safe)
+    // We use the 'queue.call' function to add an event (the call to 'rise_handler_user_context') to the queue
+    queue.call(rise_handler_thread_context);
+}
+
+void fall_handler(void) {
+    printf("Output a String\n");
+}
+
+int main() {
+    // Start the event queue
+    t.start(callback(&queue, &EventQueue::dispatch_forever));
+    printf("Starting in context %p\r\n", Thread::gettid());
+    // The 'rise' handler will execute in IRQ context
+    seconds_now = time(NULL);
+    button.rise(rise_handler_iterrupt_context);
+    // The 'fall' handler will execute in the context of thread 't'
+    button.fall(queue.event(fall_handler));
+}