HDC1050EVM User 's Guide
User's Guide
Literature Number: SNAU181A
June 2015 – Revised June 2015
User's Guide
SNAU181A – June 2015 – Revised June 2015
HDC1050EVM User 's Guide
1
Introduction
The Texas Instruments HDC1050EVM evaluation module (EVM) enables designers to evaluate the
operation and performance of the HDC1050 Relative Humidity and Temperature sensor.
The EVM contains one HDC1050 (See
Table 1).
Table 1. Device and Package Configurations
DEVICE
U1
IC
HDC1050
PACKAGE
PWSON 6pin
The EVM hosts an MSP430F5528 microcontroller (µC) as well as the HDC1050. The µC is used to control
the HDC1050 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, set up and use
the HDC1050EVM.
Figure 1. HDC1050EVM
2
HDC1050EVM User 's Guide
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Setup
2.1
2.1.1
Input/Output Connector Description
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 4-
wire cable.
Pin out:
• J1.1 GND
• J1.2 SDA
• J1.3 SCL
• J1.4 DRDYn
(NOTE: this signal is not supported by the HDC1050, and does not need to be
connected to a host controller)
• 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.
Pin out:
• J2.1 GND
• J2.2 SDA
• J2.3 SCL
• J2.4 DRDYn
(NOTE: this signal is not supported by the HDC1050n and does not need to be
connected)
• J2.5 VDD
2.1.3
J3 – USB Type A Connector
This connector is used for communications with the PC and provides power for the EVM.
2.2
Hardware Setup
The HDC1050EVM power is supplied via the USB connector. The LDO (U4) converts the 5V from the
USB to 3.3V used by the HDC1050 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 HDC1050 is 1000000xb and is fixed by design.
The EVM features a Spy-by-Wire interface to the MSP430 that enables custom firmware development and
debug using Code Composer Studio ©.
2.3
2.3.1
Software Setup
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).
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Setup
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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 2. GUI Installer Welcome Page
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
4
HDC1050EVM User 's Guide
Copyright © 2015, Texas Instruments Incorporated
SNAU181A – June 2015 – Revised June 2015
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Setup
Figure 3. 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” should be chosen instead of the default.
Figure 4. GUI Installer Installation Directory
7. Wait for all files to install
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HDC1050EVM User 's Guide
5
