SLAA941 March   2020 TUSS4440 , TUSS4470

 

  1.   TUSS44x0 Software Development Guide
    1.     Trademarks
    2. 1 Introduction to High-Level Software Flow
    3. 2 Main Energia Sketch File
      1. 2.1 MCU Initialization
      2. 2.2 TUSS44x0 Configuration
        1. 2.2.1 TUSS44x0 Odd Parity Calculation
        2. 2.2.2 TUSS44x0 Settings
          1. 2.2.2.1 Driver Settings
          2. 2.2.2.2 Receiver Settings
      3. 2.3 Read Ultrasonic Time-of-Flight
        1. 2.3.1 Run Time-of-Flight
        2. 2.3.2 Post-Process Data
        3. 2.3.3 Convert Time-of-Flight to Distance
    4. 3 Energia Examples
      1. 3.1 GetDistance.ino - COM Terminal Input Example
      2. 3.2 VOUT_ADC_Capture.ino - Standalone Example
    5. 4 References

2.3.2 Post-Process Data

If the VOUT output is captured using an ADC, the MCU can apply a custom threshold time and level map to extract the return echoes time-of-flight, peak amplitude, and width. If the O3 zero-crossing pin toggles are captured using a GPIO configured as an input, the zero-crossing frequency and count can be determined. If the O4 echo interrupt pin toggles are captured using a GPIO configured as an input, the time-of-flight and echo width can be calculated for multiple objects.