mbed GPIO Interrupt

Revision:
0:7d78d405fa52
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Oct 20 12:46:04 2016 +0000
@@ -0,0 +1,13 @@
+// using NuMaker-PFM-NUC472 GPIO interrupt to set led on/off
+#include "mbed.h"
+
+InterruptIn button(D0); 
+DigitalOut  led(LED1);
+
+void flip() {
+    led = !led;
+}
+
+int main() {
+    button.rise(&flip); // if D0 is floating, then rgbled will be flashing
+}