feat(usb): add PluggableUSB examples for JoystickMouse and SerialUSB

Signed-off-by: Aymane Bahssain <aymane.bahssain@st.com>

Author: Levi--G

libraries/USBDevice/examples/PluggableUSB-JoystickMouse/main.cpp

@@ -0,0 +1,62 @@
+#include <Arduino.h>
+#include "Mouse.h"
+#include "Joystick.h"
+
+#define LED PC13
+#define HIGHPIN A7
+#define ADCPIN A6
+#define LOWPIN A5
+
+Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,
+                   JOYSTICK_TYPE_JOYSTICK, 0, 0,
+                   true, false, false, false, false, false,
+                   false, false, false, false, false);
+
+int analogvalue = 0;
+
+void setup()
+{
+  Joystick.setXAxisRange(0, 255);
+  Joystick.begin();
+  Mouse.begin();
+  USB_Begin();
+  pinMode(HIGHPIN, OUTPUT);
+  pinMode(ADCPIN, INPUT);
+  pinMode(LOWPIN, OUTPUT);
+  digitalWrite(HIGHPIN, HIGH);
+  digitalWrite(LOWPIN, LOW);
+  pinMode(LED, OUTPUT);
+}
+
+bool high = false;
+int loops = 0;
+
+void loop()
+{
+  auto last = analogvalue;
+  auto val = analogRead(ADCPIN);
+  analogvalue <<= 1;
+  analogvalue += val;
+  analogvalue /= 3;
+  if (analogvalue >> 2 != last >> 2)
+  {
+    Joystick.setXAxis(analogvalue >> 2);
+  }
+  delay(1);
+  loops++;
+  if (loops >= 500)
+  {
+    // every 500ms
+    loops = 0;
+    high = !high;
+    digitalWrite(LED, high ? HIGH : LOW);
+    if (high)
+    {
+      Mouse.move(10, 0);
+    }
+    else
+    {
+      Mouse.move(-10, 0);
+    }
+  }
+}

libraries/USBDevice/examples/PluggableUSB-SerialUSB/main.cpp

@@ -0,0 +1,28 @@
+#include <Arduino.h>
+#include "USBCDC.h"
+
+USBCDC USBSerial;
+
+void setup()
+{
+  USBSerial.begin(115200);
+  USB_Begin();
+  while (!USB_Running())
+  {
+    // wait until usb connected
+    delay(5);
+  }
+  while (!USBSerial)
+  {
+    //(optional) wait until Serial port is connected
+    delay(5);
+  }
+}
+
+void loop()
+{
+  if (USBSerial.available())
+  {
+    USBSerial.print((char)USBSerial.read());
+  }
+}