AN2579

Examples

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3.3

Playing with CLICK_Window

In cases of double click recognition, the CLICK _Latency + CLICK_Window defines the

maximum distance between two consecutive clicks to be recognized as double click event.

By fixing the latency to avoid spurious bouncing of the signal, one can play with the

CLICK_Window as with the “double-click speed” settings of the mouse properties on the

PC.

Figure 8 shows an acquisition done with CLICK_Window = 10h (10 ms). With this setting the

two consecutive peaks of acceleration are too far apart and the second one occurs outside

of the Window.

In Figure 9 an acquisition carried out with CLICK_Window = ffh (255 ms) is shown. With this

setting the device correctly generates the double click interrupt after the second acceleration

peak.

Figure 8.

Short Window