Texas Instruments HDC3020EVM, User Manual, Page: 10 / 24

5.2 Data Capture Tab
The Data Capture tab reports the temperature and humidity from the HDC3020 device included on the
HDC3020EVM. Each selection option/button on this tab has a specific function as described below:
• Measurement Mode tab
– Measurement mode: Can select Trigger-On Demand (one-shot mode) or the Auto Measurement mode
with the appropriate frequency
– Measurement duration: Changes the number of measurement bits for humidity/temperature
measurements
• Chart Controls
– I
2
C polling rate: Changes the communication frequency between the MCU and the HDC3020EVM
• Offset
– Temperature Offset: Offsets the temperature value and sets it within the HDC3020 device
– Humidity Offset: Offsets the humidity value and sets it within the HDC3020 device
• Status
– Read Status: Reads the information about the operating state of the HDC3020
– Clear Status: Clears the contents stored in the status registers
• Alert
– Temperature Limit: Reads/writes the temperature threshold
– Humidity Limit: Reads/writes the humidity threshold
– Limit Code: Hex code representing the truncated 16-bit threshold value
• Other
– Software reset: Issues a software reset
– Enable Heater: Heating element included in device to remove any condensation on the device
– Disable Heater: Disables the heater
• NIST ID
– Read NIST ID: Returns the unique 48-bit value of the HDC3020.
Figure 5-2. HDC3020EVM GUI Data Capture Tab
GUI Operation www.ti.com
10 HDC3020EVM User Guide SNAU267A – JUNE 2021 – REVISED JUNE 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated