Introduction

This project aims to provide programs to perform temperature, humidity, and pressure measurements by means of a BME280 sensor connected to an Arduino Mega 2560.

It contains both Arduino sketch and GUI-based application for reading out data and putting into a text file on disk.

The code can be built and run on both Windows and Linux.

Developer's notes

To build the code you will need a set of developer tools as well as a suited operating system. The code builds and runs on both Microsoft Windows and Linux operating systems.

MS Windows build environment

In the following text %WSC% represents the folder where the WSC source repository is located.

Requirements

• a recent version of Microsoft Windows 64-bit
• Arduino IDE
• CMake v3.10 or newer
• Microsoft Visual Studio Community Edition
• Microsoft VCPKG
• Nullsoft Scriptable Install System (NSIS) (optional, for creating the installer)

Operating system

A 64-bit MS Windows OS is required¹. The procedure has been tested on Windows 7 Ultimate and Windows 10.

¹ It is actually required to build VCPKG, that in turn is needed to build nana. If you find another easy way to do so, you may use your 32-bit MS Windows system.

Arduino

1. Install Arduino IDE.
2. In Arduino IDE go to "Tools->Library management".
3. Install the following libraries:

• Adafruit Unified Sensors
• Adafruit BME280 Library
• OneWire
• DallasTemperature.

Visual Studio

1. Install Visual Studio 2017 Community Edition, that is free to use and downloadable from Microsoft Website.
2. Install at least the following components:

• C++ Desktop Workload
• Git for Windows

VCPKG

Install vcpkg and the nana library:

git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
bootstrap-vcpkg.bat
vcpkg.exe install nana:x86-windows
vcpkg.exe export nana --raw --output %WSC%\wsc-dependencies\

NSIS

Download NSIS from the official website and install it in the default folder.

Build

In a Developer Command Prompt for VS 2017:

cd %WSC%
mkdir build
cd build
cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DVCPKG_TARGET_TRIPLET=x86-windows -DCMAKE_TOOLCHAIN_FILE="../wsc-dependencies/scripts/buildsystems/vcpkg.cmake" ..
nmake
REM the following is optional: to build the Windows install program
cpack

Linux build environment

In the following text $WSC represents the folder where the WSC source repository is located.

Requirements

• a recent version of a Linux distibution (such as Ubuntu 18.04 or ArchLinux)
• Arduino IDE
• CMake v3.10 or newer
• GNU Make
• GNU Compiler Collection (gcc) 5 or newer
• nana C++ library

Arduino

1. Install Arduino IDE.
2. In Arduino IDE go to "Tools->Library management".
3. Install the following libraries:

• Adafruit Unified Sensors
• Adafruit BME280 Library
• OneWire
• DallasTemperature.

Other programs and libraries

Follow the general instructions provided by your Linux distribution and/or the specific for each component to install all the requirements listed above.

On a Ubuntu system, the following instructions should be sufficient:

sudo apt update
sudo apt install -y git cmake build-essential libx11-dev libxft-dev
git clone https://github.com/cnjinhao/nana.git
cd nana/
mkdir bb
cd bb/
cmake ../ -DCMAKE_BUILD_TYPE=Release
sudo make install -j

Build

In a shell:

cd $WSC
mkdir -p build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ../
make
# the following is optional: to build selfextracting tar archive
cpack