Squashed 'tmk_core/' changes from 7967731..b9e0ea0

b9e0ea0 Merge commit '7fa9d8bdea3773d1195b04d98fcf27cf48ddd81d' as 'tool/mbed/mbed-sdk'
7fa9d8b Squashed 'tool/mbed/mbed-sdk/' content from commit 7c21ce5

git-subtree-dir: tmk_core
git-subtree-split: b9e0ea08cb940de20b3610ecdda18e9d8cd7c552

1 files changed, 18 insertions, 0 deletions

diff --git a/tool/mbed/mbed-sdk/libraries/tests/usb/device/serial/main.cpp b/tool/mbed/mbed-sdk/libraries/tests/usb/device/serial/main.cpp
new file mode 100644
index 0000000000..73e52bbfae
--- /dev/null
+++ b/tool/mbed/mbed-sdk/libraries/tests/usb/device/serial/main.cpp
@@ -0,0 +1,18 @@
+#include "mbed.h"
+#include "USBSerial.h"
+
+//Virtual serial port over USB
+USBSerial serial;
+DigitalOut l1(LED1);
+
+int main(void) {
+    int i = 0;
+
+    while(1)
+    {
+        l1 = !l1;
+        printf("Hello\r\n");
+        serial.printf("I am a virtual serial port: %d\r\n", i++);
+        wait(0.1);
+    }
+}