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Setup
2.1 Input/Output Connector Description
2.1.1
2.1.2
2.1.3
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
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
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 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).
3
SNAU181A–June 2015–Revised June 2015
HDC1050EVM User 's Guide
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