[examples] Deduplicate ITM example

Author: salkinium

examples/blue_pill_f103/itm/main.cpp

@@ -15,28 +15,25 @@
 using namespace Board;
 
 modm::IODeviceWrapper<Itm, modm::IOBuffer::DiscardIfFull> itm_device;
+// Set all four logger streams to use ITM
 modm::IOStream stream(itm_device);
 
 int
 main()
 {
 	Board::initialize();
 	Itm::initialize();
+	Leds::setOutput();
 
 	stream << "Hello from the SWO." << modm::endl;
-	stream << "debug"   << modm::endl;
-	stream << "info"    << modm::endl;
-	stream << "warning" << modm::endl;
-	stream << "error"   << modm::endl;
-
 
 	while (true)
 	{
 		static modm::PeriodicTimer tmr{500ms};
 		if (tmr.execute())
 		{
 			tmr.restart(Button::read() ? 100ms : 500ms);
-			LedGreen::toggle();
+			Leds::toggle();
 
 			static uint32_t counter{0};
 			stream << "loop: " << counter++ << modm::endl;

examples/blue_pill_f103/itm/openocd.cfg

@@ -1,5 +1,7 @@
 <library>
   <extends>modm:nucleo-f303re</extends>
+  <!-- <extends>modm:nucleo-l476rg</extends> -->
+  <!-- <extends>modm:nucleo-f103rb</extends> -->
   <options>
     <option name="modm:platform:itm:buffer.tx">250</option>
   </options>