Serial-Communication.md

@@ -80,4 +80,40 @@ For the *f407vg* board, there's also another serial port, called **auxtty**: you
 //#define AUX_SERIAL "auxtty"    UNCOMMENT THIS TO OPEN THE SERIAL
 const unsigned int auxSerialSpeed=9600;
 const bool auxSerialFlowctrl=false;
-```
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+```
+
+### Example
+Usage of *TRACE()* in order to send data to the PC.
+
+##### test-serial.cpp
+```cpp
+#include <Common.h>
+
+using namespace miosix;
+
+int main()
+{
+    int i = 0;
+    while (true)
+    {
+        TRACE("%d : Serial is working!\n", i);
+        Thread::sleep(1000);
+        i++;
+    }
+
+    return 0;
+}
+```
+##### sbs.conf
+You should also add the following configuration to `sbs.conf`.
+```config
+[test-serial]
+Type:       test
+BoardId:    *your-board-id*  # e.g. stm32f407vg_stm32f4discovery
+BinName:    test-serial
+Include:    %shared
+Defines:    -DDEBUG
+Main:       test-serial
+```
+The *-DDEBUG* define is necessary in order for the *TRACE()* macro to act as a normal *printf()*.  
+Moreover the *shared* include is needed in order to compile also `Debug.cpp`, on which the *TRACE()* macro depends.
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