Silicon Laboratories IRSLIDER2EK Si1142 User Manual page 5

Si1142 Infrared Slider Demo Kit
5. Using the Si1142 Slider Demo Board with the Performance Analysis Tool
The Si1142 Slider Demo Board is supported by the QuickSense Performance Analysis Tool. The Performance
Analysis Tool allows users to see real-time infrared proximity and ambient light measurements from the Si1142 in a
graphical form. The communications interface to the Si1142 Slider Demo Board is provided over the USB
connection via the QuickSense Firmware API. For a more detailed description of the QuickSense Firmware API or
the Serial Interface, see "AN366: QuickSense Firmware API."
To use the Performance Analysis Tool with the Si1142 Slider Demo Board, perform the following steps:
1. Connect the Si1142 Slider Demo Board to the PC using a USB cable.
2. Launch the Performance Analysis Tool from QuickSense Studio or from the Start menu.
3. Select the board from the "Devices" menu (it should show up as "TS" followed by a serial number).
4. Select the channels you wish to display on the picture of the slider board that appears. The individual channels
available are described in "5.1. Channel Selection" .
5. Click the green "Acquisition" arrow to begin collecting data.
Note: The Performance Analysis Tool and the IDE cannot connect to the Si1142 Slider Demo Board at the same time. Be cer-
tain to disconnect from the board in one software package before trying to connect in the other.
Figure 3 shows an example of the Performance Analysis Tool output when connected to the Si1142 Slider Demo
Board. To generate the graph, a hand was moved above the slider board. The selected traces shown are the raw
data measurements for the amount of Infrared light being reflected onto the part. The pink trace represents the
readings using infrared emitter DS1, and the green trace represents the readings using infrared emitter DS2.
Figure 3. Performance Analysis Tool Main Window
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