for test

Revision:
0:0501ccebcb27
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Sep 16 12:32:16 2020 +0000
@@ -0,0 +1,12 @@
+#include "mbed.h"
+
+DigitalOut led1(LED1);
+
+// main() runs in its own thread in the OS
+int main() {
+    while (true) {
+        led1 = !led1;
+        wait(0.5);
+    }
+}
+