nrf52 serial and ble nano2 serial

Dependencies:  

Revision:
0:98aa84122685
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 02 09:37:36 2018 +0000
@@ -0,0 +1,9 @@
+#include "mbed.h"
+Serial pc(P0_29,P0_30);
+DigitalOut myled1(P0_13);
+int main() {
+    pc.baud(9600);
+    while(1) {
+          pc.printf("it worked");
+    }
+}
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