SI7013EVB-UDP-M3L1 Datasheet, PDF (6/26 Pages) Silicon Laboratories – Si7013EVB-UDP-M3L1 Users Guide

Si7013EVB-UDP-M3L1
3. Software Description
The Si7013EVB-UDP-SiM3L1xx contains two software projects:
Demo Software
Data Logger
The purpose of the Demo Software is to provide simple example code. The Data Logger project provides a more
full featured demonstration of the capability of the Si7013 and SiM3L1xx.
3.1. Demo Software
The Si7013 Unified Development Platform (UDP) Demo software runs on a UDP SiM3L1xx MCU card (UDP
SIM3L1XX-LCD MCU). The MCU card may be plugged into a UDP motherboard, but this is not necessary. A
Si7013 port header card (Si7013EB-UDP) is plugged into the MCU card.
The demo reads the temperature and humidity from the Si7013 port header card and displays them on the MCU
card’s LCD. The user may press the S1 button to toggle the displayed temperature between Celsius and
Fahrenheit. The user may press the S2 button to switch the displayed temperature from the internal temperature
sensor and the external thermistor. When the thermistor is displayed, a dot is shown after the temperature.
3.1.1. Running the Demo Software
The “Si7013 UDP SiM3L1xx Evaluation Board Documentation and Software” CD contains the source code for the
Demo Software. However, you do not need to build the Demo Software, because the CD also contains a pre-built
image file and a batch file to download the image file to the MCU card. This is done using the following procedure:
1. Plug the Si7013 port header card onto J21 (PB0) of the MCU card. The Silicon Labs logo on the port
header card faces the power connector on the MCU card. Make sure that the VIO pin on the port header
card matches up with the VIO pin on J21. The top 4 pins (1–4) of the port header card do not connect with
J21.
Figure 5. Si7013 Port Header Card
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Rev. 0.2