w2interrupt

Dependencies:   mbed

Revision:
0:8dc791260768
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jan 12 15:42:21 2017 +0000
@@ -0,0 +1,18 @@
+/* External input causes interrupt, while led flashes*/
+#include "mbed.h"
+InterruptIn button(SW2); //define and name the interrupt input
+DigitalOut led(LED1); //red led defined as "led"
+DigitalOut flash(LED2); //green led defined as "flash"
+
+void ISR1() { //this is the response to interrupt, i.e. the ISR
+   led = !led;
+}
+int main() {
+    button.rise(&ISR1); // attach the address of the ISR function to the
+// interrupt rising edge
+
+    while(1) { // continuous loop, ready to be interrupted
+      flash = !flash; // green led flashes
+      wait(0.25); // with time interval of 0.25s
+    }
+}