Texas Instruments HDC2080EVM Manuale utente

HDC2080EVM User 's Guide

User's Guide

Literature Number: SNAU197

April 2018

2SNAU197–April 2018

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HDC2080EVM User 's Guide

User's Guide

SNAU197–April 2018

HDC2080EVM User 's Guide

1 Introduction

The Texas Instruments HDC2080EVM evaluation module (EVM) enables designers to evaluate the

operation and performance of the HDC2080 Relative Humidity and Temperature Sensor.

The EVM contains one HDC2080 (See Table 1).

Table 1. Device and Package Configurations

DEVICE IC PACKAGE

U1 HDC2080DMBR PWSON (6-pin) DMB

The EVM hosts an MSP430F5528 microcontroller (µC) as well as the HDC2080. The µC is used to control

the HDC2080 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 so that the user can

remotely locate the sensor from the µC section.

2 Setup

This section describes the connectors on the EVM as well and how to properly connect, setup and use the

HDC2080EVM.

Figure 1. HDC2080EVM

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Setup

SNAU197–April 2018

HDC2080EVM User 's Guide

2.1 Input/Output Connector Description

2.1.1 J1 – 5x1 Header

This header is not populated and can be installed if the EVM is broken in 2 sections: PC interface and

Sensor. This connector with its counterpart J2 allows the communication of the two sections through a 5-

wire cable

J1.1 GND

J1.2 SDA

J1.3 SCL

J1.4 INT

J1.5 VDD

2.1.2 J2 – 5x1 Header

This header is not populated and can be installed if the EVM is broken in 2 sections: PC interface and

Sensor. This connector with its counterpart J1 allows the communication of the two sections through a 5-

wire cable.

J2.1 GND

J2.2 SDA

J2.3 SCL

J2.4 INT

J2.5 VDD

2.1.3 USB Type A Connector

This connector is used for communications with the PC and provides power for the EVM.

2.2 Hardware Setup

The HDC2080EVM power is supplied via the USB connector. The LDO (U4) converts the 5V from the

USB to 3.3V used by the HDC2080 and the MSP430. The EVM may be directly inserted into a USB port

on a PC or laptop, or may be connected to the latter using the appropriate USB cable.

The I2C address of the HDC2080 is set at EVM level at 1000000xb on the EVM. The I2C address has

been set mounting the 0 Ωresistor R12 (refer to Figure 2).

Setup

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Figure 2. HDC2080EVM : Sensor Module

To change the I2C address, remove the resistor R12 and populate the R4 with 0 Ωresistor (refer to

Figure 3 )

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Setup

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HDC2080EVM User 's Guide

Figure 3. HDC2080EVM: Layout Resistors for I2C Address Setting - Top

Table 2. I2C Address

ADDR R12 R4 HDC2080 ADDRESS

0 Short Open 1000000

1 Open Short 1000001

In Table 2, the EVM default configuration is in bold.

Setup

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HDC2080EVM User 's Guide

2.3 Software Setup

2.3.1 System Requirements

The Sensing Solutions GUI supports:

• 64-bit Windows 7

• 64-bit Windows XP

The current GUI does not support 32-bit Windows operating systems. The host machine is required for

device configuration and data streaming. The following steps are necessary to prepare the EVM for the

GUI:

• The GUI and EVM driver must be installed on the host.

• The EVM must be connected to a full speed USB port (USB 1.0 or above).

2.3.2 Sensing Solutions GUI and EVM Driver Installation

The Sensing Solutions GUI and EVM driver installer is packaged in a zip file. Follow these steps to install

the software.

1. Download the software ZIP file from the EVM tool page

2. Extract the downloaded ZIP file

3. Run the included executable

4. Follow all directions from the installer

Figure 4. GUI Installer Welcome Page

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Setup

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HDC2080EVM User 's Guide

5. Read the license agreement and if you still wish to install the software, select “I accept the agreement”

and click “Next” as shown in

Figure 5. GUI Installer License Agreement

6. Select the installation directory. If the user installing the software is not a system administrator a

directory not with “Program Files” must be chosen instead of the default.

Figure 6. GUI Installer Installation Directory

Setup

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7. Wait for all files to install

Figure 7. GUI Installer Copying Files

8. After the files have copied a device driver installer will start. If prompted about an unsigned driver,

choose to install the driver anyways. If running Windows 8 or 8.1, the PC must be started in a “Safe”

mode to install the unsigned driver.

Figure 8. EVM Driver Installer Welcome Page

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Setup

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HDC2080EVM User 's Guide

9. Wait for the driver to install

Figure 9. EVM Driver Installer In Progress

10. Click “Finish” after the driver has been installed

Figure 10. EVM Driver Installer Complete

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11. Click “Finish” to complete the software installation

Figure 11. GUI Installer Complete

2.4 Operation

When the EVM is connected, the host computer will automatically detect the device and

Launch the GUI. A detailed description of the GUI operation is presented later in this document.

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