Windows desktop (.NET 4.5.2 / WPF) and cross-platform (.NET 7.0 / AvaloniaUI) applications for working with DS18B20 1-Wire digital thermometers connected to DS2480B 1-Wire bus controller (using "Flexible Speed" mode).
The DS2480B Serial 1-Wire Driver (UART to 1-Wire bridge) allows fine tuning of bus signal parameters, which is necessary for working on long cables and/or with large number of devices on bus.
| Project | Platform | Target Framework | VS 2019 | VS 2022 |
|---|---|---|---|---|
| App | Windows-only, desktop (WPF) | net452 | ✓ | — |
| UnitTests | Windows (NUnit) | net452 | ✓ | — |
| OneWire | Cross-platform shared lib | netstandard1.0 | ✓ | ✓ |
| AvaloniaApp | Cross-platform, desktop | net7.0 | — | ✓ |
| ConsoleApp | Cross-platform, console | net7.0 | — | ✓ |
- Connect any 1-Wire bus adapter, based on
DS2480Bchip to USB or serial port on PC (For example, with FT232RL USB-UART adapter). - Connect one or several
DS18B201-Wire temperature sensors to 1-Wire bus (using three wires, i.e. in normal power mode, not parasite mode). - Run application, select serial port from list, press 'Search' button, then 'Measure' button.
- Run console application using serial port name as first command line argument, for example:
DigitalThermometer.ConsoleApp.exe COM5
On development system with VS2022 installed, execute the following command in the solution (...\Src) directory:
dotnet publish DigitalThermometer.VS2022.sln -c Release -r win7-x64 --self-contained true
It will create the self-contained deployment (SCD) so that target system don't need to have .NET 6.0 Runtime installed. Output files will be placed into:
...\Src\DigitalThermometer.ConsoleApp\bin\Release\net7.0\win7-x64\publish\
Similar steps are for building for Linux:
dotnet publish DigitalThermometer.VS2022.sln -c Release -r linux-arm --self-contained true
...\Src\DigitalThermometer.ConsoleApp\bin\Release\net7.0\linux-arm\publish\
May require superuser rights to access serial port.
Run sudo raspi-config then select Interfacing Options in menu, then select Serial.
Select No to login shell to be accessible over serial.
Select Yes to serial port hardware to be enabled.
Select Finish in main menu and then reboot system.
Copy contents of publish console application directory to RPi (for example into /home/pi/dt directory).
Set permissions (execute access) to startup file (note that filename is case-sensitive and has no extension)
chmod +x DigitalThermometer.ConsoleApp
Run application:
./DigitalThermometer.ConsoleApp
It will output list of serial ports in system:
Serial ports: /dev/ttyAMA0 /dev/ttyS0 /dev/ttyUSB0
The /dev/ttyUSB0 in this example is virtual serial port of FT232RL chip of USB-UART adapter.
Run application with serial port name provided as command line argument:
./DigitalThermometer.ConsoleApp /dev/ttyUSB0
Check installed .NET 7.0 runtime using command:
dotnet --info
The Microsoft.NETCore.App 7.0.8 (or later version) must present in list.
Run console application with serial port name provided as command line argument:
dotnet DigitalThermometer.ConsoleApp.dll /dev/ttyUSB0
Run desktop application:
dotnet DigitalThermometer.AvaloniaApp.dll
Developed using MS Visual Studio 2019 / 2022, C#, .NET Framework 4.5.2 / .NET 7.0, WPF / AvaloniaUI. Application code separation according to MVVM pattern. 1-Wire functions are implemented in separate .NET Standard 1.0 assembly. Unit tests implemented using NUnit.