#include "CirquePinnacle.h"
int8_t RelativeReport::scroll = 0;

This will always be in range -128 <= scroll <= 127

Note

In Relative/Mouse mode the scroll wheel data is only reported if the intellimouse parameter is passed as true to PinnacleTouch::relativeModeConfig(). Otherwise this is an empty byte as the RelativeReport follows the buffer structure of a mouse HID report.