USB_Host_Shield_2.0/examples/HID/USBHIDBootMouse/USBHIDBootMouse.ino

#include <hidboot.h>
#include <usbhub.h>

// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#include <SPI.h>
#endif

class MouseRptParser : public MouseReportParser
{
protected:
    void OnMouseMove	(MOUSEINFO *mi);
    void OnLeftButtonUp	(MOUSEINFO *mi);
    void OnLeftButtonDown	(MOUSEINFO *mi);
    void OnRightButtonUp	(MOUSEINFO *mi);
    void OnRightButtonDown	(MOUSEINFO *mi);
    void OnMiddleButtonUp	(MOUSEINFO *mi);
    void OnMiddleButtonDown	(MOUSEINFO *mi);
};
void MouseRptParser::OnMouseMove(MOUSEINFO *mi)
{
  Serial.print("dx=");
  Serial.print(mi->dX, DEC);
  Serial.print(" dy=");
  Serial.println(mi->dY, DEC);
};
void MouseRptParser::OnLeftButtonUp	(MOUSEINFO *mi)
{
  Serial.println("L Butt Up");
};
void MouseRptParser::OnLeftButtonDown	(MOUSEINFO *mi)
{
  Serial.println("L Butt Dn");
};
void MouseRptParser::OnRightButtonUp	(MOUSEINFO *mi)
{
  Serial.println("R Butt Up");
};
void MouseRptParser::OnRightButtonDown	(MOUSEINFO *mi)
{
  Serial.println("R Butt Dn");
};
void MouseRptParser::OnMiddleButtonUp	(MOUSEINFO *mi)
{
  Serial.println("M Butt Up");
};
void MouseRptParser::OnMiddleButtonDown	(MOUSEINFO *mi)
{
  Serial.println("M Butt Dn");
};

USBHost usb;
USBHub Hub(&usb);
HIDBoot<USB_HID_PROTOCOL_MOUSE> HidMouse(&usb);

uint32_t next_time;

MouseRptParser Prs;

void setup()
{
  Serial.begin( 115200 );
#if !defined(__MIPSEL__)
  while (!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
#endif
  Serial.println("Start");

  if (usb.Init() == -1)
    Serial.println("OSC did not start.");

  delay( 200 );

  next_time = millis() + 5000;

  HidMouse.SetReportParser(0, &Prs);
}

void loop()
{
  usb.Task();
}