Texas Instruments HDC2022EVM Manuel utilisateur

HDC2022EVM

User's Guide

Literature Number: SNIU039

December 2019

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Table of Contents

Contents

1 Trademarks......................................................................................................................... 4

2 Quick Start.......................................................................................................................... 5

3 EVM GUI ............................................................................................................................. 6

3.1 Software Setup........................................................................................................... 6

4 GUI Operation...................................................................................................................... 7

4.1 Home Tab................................................................................................................. 7

4.2 Data Capture Tab ........................................................................................................ 8

4.3 EVM Settings Tab........................................................................................................ 9

4.4 Device Configuration................................................................................................... 10

4.5 Registers Tab ........................................................................................................... 11

4.6 Collateral Tab ........................................................................................................... 12

5 EVM Hardware .................................................................................................................. 13

5.1 Input/Output Connector Description.................................................................................. 13

5.2 EVM Operating Conditions ........................................................................................... 13

5.3 Device Address Configuration ........................................................................................ 14

5.4 Reducing the Sensor's Thermal Mass............................................................................... 15

6 Updating Firmware on HDC2022EVM.................................................................................... 17

7 Board Layout..................................................................................................................... 19

8 Schematic ......................................................................................................................... 20

9 HDC2022EVM Bill of Materials.............................................................................................. 21

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List of Figures

1 HDC2022DEB with ePTFE Filter ......................................................................................... 4

2 HDC2022EVM GUI on first startup........................................................................................ 5

3 Download Pop-Up ........................................................................................................... 6

4 Home Tab of HDC2022EVM GUI ......................................................................................... 7

5 Data Capture Tab of HDC2022EVM GUI................................................................................. 8

6 EVM Setup Tab of HDC2022EVM GUI................................................................................... 9

7 Device Configuration Tab of HDC2022EVM GUI...................................................................... 10

8 Register Tab of HDC2022EVM GUI..................................................................................... 11

9 Collateral Tab of HDC2022EVM GUI.................................................................................... 12

10 HDC2022EVM.............................................................................................................. 13

11 HDC2022EVM : Sensor Module.......................................................................................... 14

12 HDC2022EVM: Layout Resistors for I2C Address Setting - Top .................................................... 14

13 HDC2022EVM: PC Interface and Sensor Module ..................................................................... 15

14 HDC2022EVM: PC Interface and Smaller Sensor Module ........................................................... 15

15 HDC2022EVM: Pads for I2C and Supply of the Smaller Sensor Module .......................................... 16

16 HDC2022EVM Spy-Bi-Wire programming connections............................................................... 17

17 UniFlash Launch Screen, MSP430F5528 device selected. .......................................................... 18

18 Top Layer Routing ......................................................................................................... 19

19 Bottom Layer Routing...................................................................................................... 19

20 HDC2022EVM Schematic................................................................................................. 20

List of Tables

1 Device and Package Configurations ...................................................................................... 4

2 EVM Temperature Range................................................................................................. 13

3 I2C Address................................................................................................................. 14

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HDC2022EVM User's Guide

User's Guide

SNIU039–December 2019

HDC2022EVM User's Guide

The Texas Instruments HDC2022EVM evaluation module (EVM) enables designers to evaluate the

operation and performance of the HDC2022 Relative Humidity and Temperature Sensor.

The EVM contains one HDC2022 (see Table 1).

Table 1. Device and Package Configurations

DEVICE IC PACKAGE

U1 HDC2022DEB WSON (6-pin) DEB

The EVM hosts an MSP430F5528 microcontroller (µC) as well as the HDC2022. The µC is used to control

the HDC2022 and communicate with a host PC through a USB port. The EVM is designed to be broken

into two sections if desired. The sensor section can be separated from the µC section of the board to

reduce thermal mass surrounding the HDC2022.

Figure 1. HDC2022DEB with ePTFE Filter

1 Trademarks

All trademarks are the property of their respective owners.

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Quick Start

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HDC2022EVM User's Guide

2 Quick Start

1. Click here in Safari, Firefox, or Chrome and select the HDC202xEVM GUI from the gallery to access

the cloud-based GUI. The browser window should appear as in Figure 2. Follow the onscreen

instruction to complete setup.

Figure 2. HDC2022EVM GUI on first startup

2. Reload the browser window after installation to access the home screen of the HDC2022EVM GUI.

3. Connect the HDC2022EVM to the USB port of your computer via USB. Drivers for the device will install

automatically and the GUI will connect to the EVM.

4. Temperature and humidity data can be recorded and logged on the data capture tab. Select the

icon to navigate to this page. You can enable register auto-read from this page, and initiate a one-shot

to take sample data.

5. Configure device settings from the device configuration tab .

6. Register, bit-field, and bit level configuration can be performed from the register tab .

See Section 4 for more information on GUI tabs, operation, and installation of the local version of the

HDC2022EVM GUI.

EVM GUI

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3 EVM GUI

3.1 Software Setup

The PC GUI software for the HDC2022EVM runs on TI's GUI composer framework. The software is

available as a live version which runs in your browser, and is available as a download for offline use. The

software is compatible with Windows, Mac, and Linux Operating systems.

3.1.1 Live Software on dev.ti.com

The live software currently works within Chrome, Firefox and Safari browsers. Internet Explorer and Edge

browsers are not supported. User can access the live version through one of the following actions:

• Go to the HDC2022EVM Tool page on TI.com and click on the View Button

• Go to dev.ti.com/gallery and search for the HDC2022EVM.

Click on the application icon within the gallery to launch the software. Follow the prompts onscreen to

install the TI Cloud Agent Bridge browser plugin.

3.1.2 Offline Software

3.1.2.1 Download GUI from dev.ti.com

Users can access the latest version of the offline software by navigating to the live version as noted

above. Look for the download icon and download both the application and runtime for the operating

system as shown in the download pop-up. After download, unzip and run the downloaded executable file.

Follow the onscreen instructions to install the local version of the GUI.

Figure 3. Download Pop-Up

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GUI Operation

SNIU039–December 2019

HDC2022EVM User's Guide

4 GUI Operation

The section describes how to use the HDC2022EVM GUI

4.1 Home Tab

The Home Tab is shown at software launch. The Learn More link displays the key features and a

functional diagram for the HDC2022 device. The icons on the left side of the screen are shortcuts which

can be used for navigation to other tabs within the GUI.

Figure 4. Home Tab of HDC2022EVM GUI

GUI Operation

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4.2 Data Capture Tab

The Data Capture tab reports the temperature and humidity from the HDC2022 device included on the

HDC2022EVM. To enable data capture, ensure that an auto-read delay from the drop down menu at the

top of the page is selected.

Each selection option/button on this tab has a specific function as described below:

•Register Auto Read Delay: Changes the delay between register reads

•Measurement Configuration: Configures the HDC2022 to return temperature, humidity, or both.

•Humidity/Temperature Resolution: Change the number of measurement bits for

humidity/temperature measurements.

•Auto Measurement Mode: Set the auto-measurement frequency of the HDC2022.

•Start Measurement/One-Shot Button: In shutdown mode, this button triggers a measurement. When

an auto-measurement frequency is selected, this button begins measuring from the HDC2022.

•Celsius/Fahrenheit Select: Sets the GUI to display in Celsius or parenthetic. This does not change

settings for the HDC2022 or EVM.

•Activate Soft Reset Button: Triggers a soft reset of the HDC2022.

•Activate Heater Button: Enables the heater on the HDC2022.

Figure 5. Data Capture Tab of HDC2022EVM GUI

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GUI Operation

SNIU039–December 2019

HDC2022EVM User's Guide

4.3 EVM Settings Tab

The EVM Settings tab allows for setup of features for the USB to I2C bridge and EVM GUI. Selecting an

alternate I2C address will disconnect the GUI from the USB device. The EVM must be modified as

discussed in Section 5.3 to use the alternate address.

Each selection option/button on this tab has a specific function as described below:

•I2C Frequency: Change the communication frequency between the control board and HDC2022EVM.

•I2C Address: Selects the address option of the HDC2022.

•Firmware Read Button: Reads the current version of the EVM firmware.

•ID Registers Indicators: Returns the value of the HDC2022 ID registers.

•Scaling Mode: Set to Fixed/Auto to control the scaling of the graph on the Data Capture Tab.

•Scaling Min/Max Temp/Humidity: Set the min and max values for the temperature and humidity

graph on the Data Capture Tab.

Figure 6. EVM Setup Tab of HDC2022EVM GUI

GUI Operation

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4.4 Device Configuration

The Device Configuration tab allows for easy configuration and setup of the HDC2022 device included on

the HDC2022EVM. If immediate write mode is selected on the Section 4.5, then changes made in the

selection boxes will be written to the HDC2022 device as soon as possible.

The Auto Measurement Mode, Temperature/Humidity Resolution, Measurement Configuration, activate

Soft Reset, and Activate Heater widgets perform the same functions as on the Data Capture tab (refer to

Section 4.2.) The other widgets are described below:

•DRDY/INT_EN Pin Configuration: Selects the output for the HDC2022 interrupt pin

•Interrupt Polarity: Selects the active/inactive state of the HDC2022 interrupt pin

•Interrupt Mode: Sets the behavior of the HDC2022 interrupt pin.

•Humidity/Temperature Offset: Sets the value of respective offset register within the HDC2022.

•Humidity/Temperature Threshold: Sets the value of the threshold registers within the HDC2022.

•HDC2022 Interrupt/DRDY Configuration Enable Bits: Selects the source of the HDC2022 Interrupt.

Figure 7. Device Configuration Tab of HDC2022EVM GUI

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