Arrow DECA User Manual page 82

Figure 6-9 Block diagram of Humidity and Temperature Sensor
This demonstration demonstrates basic function of HDC1000 and shows temperature and humidity
reading in different acquisition mode. HDC1000 can perform a measurement of both humidity and
temperature, or only humidity or temperature. The measurement resolution can be set to 8, 11, or 14
bits for humidity; 11 or 14 bits for temperature. Different resolution setting results in a different
conversion time. When Trigger the measurements, operation should wait for the measurements to
complete based on the conversion time. Alternatively, wait for the assertion of DRDYn. In this
demonstration, a delay in I2C function is adopted to simplify the process.
 System Requirements
The following items are required for this demonstration.
 DECA board x1
 Demonstration File Locations
 Hardware project directory: Humidity_Temperature_NIOS
 Bitstream used: DECA_golden_top.sof
 Software project directory: Humidity_Temperature_NIOS\software
 Demo batch file : Humidity_Temperature_NIOS \demo_batch\ test.bat
 Demonstration Setup and Instructions
DECA User Manual
81
www.terasic.com
May 22, 2015