Silicon Laboratories IRSLIDER2EK Si1142 User Manual page 9

5.2. Gesture Sensing
In addition to infrared and ambient light measurements and distance calculations, the example firmware contains
algorithms for gesture recognition. When connected to the board with the Performance Analysis Tool, a group
window will appear, as shown in Figure 6. When a gesture is recognized by firmware, the gesture name and
parameter information will be added to the top of the 2D Gesture group. Three gestures are supported by the
example code. The parameters for each gesture are listed in Table 2.
Gesture Name
Pause
Swipe Left
Swipe Right
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Si1142 Infrared Slider Demo Kit
Figure 6. Performance Analysis Tool Group Window
Table 2. Recognized Gestures
Parameter Parameter Range
Position 1–8 (LED position)
Speed 1–18 (Slow to Fast) Move hand rapidly from the right side to the left side
Speed 1–18 (Slow to Fast) Move hand rapidly from the left side to the right side
Description of Action and LED Indication
Hold hand steady in a single position above the board
for 3/4 second. Current position LED will blink briefly.
of the board. LEDs will briefly indicate a leftward
sweep pattern.
of the board. LEDs will briefly indicate a rightward
sweep pattern.
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