Texas Instruments TUSS44 0 Series, User Manual

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16 SLAU822A – December 2019 – Revised April 2020
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TUSS44x0 EVM for Ultrasonic Sensors User's Guide
Frequency — Sets the frequency at which the IO1 and/or IO2 pins will toggle for burst generation.
Configurable from 30 to 1000 kHz.
Record — Sets the record length of the ADC in 12 ms increments up to 73 ms. The MSP430F5529 ADC
captures 2048 samples over the specified record length.
Range — Sets the minimum and maximum time values of the Data Dump chart to focus on a specific
range within the record length.
Pulses — Sets the number of pulses to generate during burst. Configurable from 1 to 63 pulses.
GUI Threshold Enable — Enabled the GUI based threshold to find the peak amplitude from the
Threshold Start in time above the Threshold Level in voltage.
Threshold Level — Sets the GUI based threshold level in 0.1-V increments.
Threshold Start — Sets the start time in milliseconds for when the GUI should start searching for a peak
amplitude.
3.5.2.2 Data Dump
Plots and exports the graphical results for the VOUT echo envelope, echo interrupt, zero-crossing, and
GUI threshold.
Figure 13. Data Monitor - Data Dump
Clear — Immediately removes all points from the chart.
Clear Per Loop — Removes all points from the chart before each time-of-flight command.
Export — Immediately exports the chart data as an XML file.
Export Per Loop — Exports the chart data as an XML file at the end of each time-of-flight command.
Pre-Append Export Name — A custom string to append to the beginning of the exported XML file.
Post-Append Export Name — A custom string to append to the end of the exported XML file.
Cursor Indicators — When any area of the chart is clicked, the cursor will report the approximate time
(milliseconds), amplitude, and distance (m) at the indicators.
Before capturing ultrasonic echo information, ensure the following sequential checklist is reviewed: