DF Robot Analog DO sensor

Source/Meadow.Foundation.Peripherals/Motors.GpioStepper/Driver/Readme.md

@@ -13,7 +13,7 @@ To view all Wilderness Labs open-source projects, including samples, visit [gith
 ## Usage
 
 ```csharp
-private IPositionalMotor stepper;
+private IStepperMotor stepper;
 
 private bool UseStepDirConfiguration { get; set; } = true;
 

Source/Meadow.Foundation.Peripherals/Sensors.Distance.A02yyuw/Driver/Readme.md

@@ -19,7 +19,7 @@ public override Task Initialize()
 {
     Resolver.Log.Info("Initialize...");
 
-    a02yyuw = new A02yyuw(Device, Device.PlatformOS.GetSerialPortName("COM1"));
+    a02yyuw = new A02yyuw(Device, Device.PlatformOS.GetSerialPortName("COM4"));
 
     var consumer = A02yyuw.CreateObserver(
         handler: result =>
@@ -30,7 +30,7 @@ public override Task Initialize()
         {
             if (result.Old is { } old)
             {
-                return Math.Abs((result.New - old).Centimeters) > 0.5;
+                return Math.Abs((result.New - old).Centimeters) > 5.0;
             }
             return false;
         }

Source/Meadow.Foundation.Peripherals/Sensors.Distance.Me007ys/Driver/Readme.md

@@ -30,7 +30,7 @@ public override Task Initialize()
         {
             if (result.Old is { } old)
             {
-                return Math.Abs((result.New - old).Centimeters) > 0.5;
+                return Math.Abs((result.New - old).Centimeters) > 5.0;
             }
             return false;
         }

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.AtlasScientificGravityDOMeter/Driver/Readme.md

@@ -35,10 +35,10 @@ public override Task Initialize()
     sensor.Subscribe(consumer);
 
     // optional classical .NET events can also be used:
-    sensor.SaturationUpdated += (sender, result) =>
+    sensor.Updated += (sender, result) =>
     {
-        //    string oldValue = (result.Old is { } old) ? $"{old * 100:n0}%" : "n/a";
-        //    Resolver.Log.Info($"Updated - New: {result.New * 100:n0}%, Old: {oldValue}");
+        string oldValue = (result.Old is { } old) ? $"{old * 100:n0}%" : "n/a";
+        Resolver.Log.Info($"Updated - New: {result.New * 100:n0}%, Old: {oldValue}");
     };
 
     return Task.CompletedTask;

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.DFRobotGravityDOMeter/Driver/DFRobotGravityDOMeter.cs

@@ -0,0 +1,133 @@
+using Meadow.Hardware;
+using Meadow.Units;
+using System;
+using System.Threading.Tasks;
+
+namespace Meadow.Foundation.Sensors.Environmental;
+
+/// <summary>
+/// DFRobot Analog Gravity Dissolved Oxygen Meter
+/// </summary>
+public partial class DFRobotGravityDOMeter : SamplingSensorBase<ConcentrationInWater> //, IDissolvedOxygenSensor
+{
+    /// <summary>
+    /// The current water temperature (default 25C)
+    /// </summary>
+    public Units.Temperature WaterTemperature { get; set; } = new Units.Temperature(25, Units.Temperature.UnitType.Celsius);
+
+    /// <summary>
+    /// The calibration value for the sensor at 25C (default 1.6V)
+    /// </summary>
+    public Voltage CalibrationAt25C { get; set; } = new Voltage(1.6, Voltage.UnitType.Volts);
+
+    /// <summary>
+    /// Returns the analog input port
+    /// </summary>
+    protected IAnalogInputPort AnalogInputPort { get; }
+
+    /// <summary>
+    /// Last concentration value read from the sensor
+    /// </summary>
+    public ConcentrationInWater? ConcentrationInWater { get; protected set; }
+
+    /// <summary>
+    /// The disolved oxygen lookup table for temperature values from 0 to 40 degrees C
+    /// </summary>
+    readonly int[] DO_Table = new int[41] {
+    14460, 14220, 13820, 13440, 13090, 12740, 12420, 12110, 11810, 11530,
+    11260, 11010, 10770, 10530, 10300, 10080, 9860, 9660, 9460, 9270,
+    9080, 8900, 8730, 8570, 8410, 8250, 8110, 7960, 7820, 7690,
+    7560, 7430, 7300, 7180, 7070, 6950, 6840, 6730, 6630, 6530, 6410};
+
+    /// <summary>
+    /// Creates a new DFRobotGravityDOMeter object
+    /// </summary>
+    /// <param name="analogInputPin">Analog pin the temperature sensor is connected to</param>
+    /// <param name="sampleCount">How many samples to take during a given reading</param>
+    /// <param name="sampleInterval">The time, to wait in between samples during a reading</param>
+    public DFRobotGravityDOMeter(IPin analogInputPin, int sampleCount = 5, TimeSpan? sampleInterval = null)
+        : this(analogInputPin.CreateAnalogInputPort(sampleCount, sampleInterval ?? TimeSpan.FromMilliseconds(40), new Voltage(3.3)))
+    { }
+
+    /// <summary>
+    /// Creates a new DFRobotGravityDOMeter object
+    /// </summary>
+    /// <param name="analogInputPort">The port for the analog input pin</param>
+    public DFRobotGravityDOMeter(IAnalogInputPort analogInputPort)
+    {
+        AnalogInputPort = analogInputPort;
+
+        AnalogInputPort.Subscribe
+        (
+            IAnalogInputPort.CreateObserver(
+                result =>
+                {
+                    ChangeResult<ConcentrationInWater> changeResult = new()
+                    {
+                        New = VoltageToConcentration(result.New),
+                        Old = ConcentrationInWater
+                    };
+                    ConcentrationInWater = changeResult.New;
+                    RaiseEventsAndNotify(changeResult);
+                }
+            )
+       );
+    }
+
+    /// <summary>
+    /// Get the current voltage, useful for calibration
+    /// </summary>
+    /// <returns></returns>
+    public Task<Voltage> GetCurrentVoltage()
+    {
+        return AnalogInputPort.Read();
+    }
+
+    /// <summary>
+    /// Reads data from the sensor
+    /// </summary>
+    /// <returns>The latest sensor reading</returns>
+    protected override async Task<ConcentrationInWater> ReadSensor()
+    {
+        var voltage = await AnalogInputPort.Read();
+        var newConcentration = VoltageToConcentration(voltage);
+        ConcentrationInWater = newConcentration;
+        return newConcentration;
+    }
+
+    /// <summary>
+    /// Starts continuously sampling the sensor
+    /// </summary>
+    public override void StartUpdating(TimeSpan? updateInterval)
+    {
+        lock (samplingLock)
+        {
+            if (IsSampling) { return; }
+            IsSampling = true;
+            AnalogInputPort.StartUpdating(updateInterval);
+        }
+    }
+
+    /// <summary>
+    /// Stops sampling the sensor
+    /// </summary>
+    public override void StopUpdating()
+    {
+        lock (samplingLock)
+        {
+            if (!IsSampling) { return; }
+            IsSampling = false;
+            AnalogInputPort.StopUpdating();
+        }
+    }
+
+    ConcentrationInWater VoltageToConcentration(Voltage voltage)
+    {
+        var calibrationValue = DO_Table[(int)WaterTemperature.Celsius];
+
+        var voltageSaturationInMilliVolts = CalibrationAt25C.Millivolts + 35 * (WaterTemperature.Celsius - 25);
+        var concentrationRaw = voltage.Millivolts * calibrationValue / voltageSaturationInMilliVolts;
+
+        return new ConcentrationInWater(concentrationRaw, Units.ConcentrationInWater.UnitType.MicrogramsPerLiter);
+    }
+}

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.DFRobotGravityDOMeter/Driver/Readme.md

@@ -0,0 +1,71 @@
+# Meadow.Foundation.Sensors.Environmental.DFRobotGravityDOMeter
+
+**DFRobot analog gravity dissolved oxygen sensor**
+
+The **DFRobotGravityDOMeter** library is designed for the [Wilderness Labs](www.wildernesslabs.co) Meadow .NET IoT platform and is part of [Meadow.Foundation](https://developer.wildernesslabs.co/Meadow/Meadow.Foundation/).
+
+The **Meadow.Foundation** peripherals library is an open-source repository of drivers and libraries that streamline and simplify adding hardware to your C# .NET Meadow IoT application.
+
+For more information on developing for Meadow, visit [developer.wildernesslabs.co](http://developer.wildernesslabs.co/).
+
+To view all Wilderness Labs open-source projects, including samples, visit [github.com/wildernesslabs](https://github.com/wildernesslabs/).
+
+## Usage
+
+```csharp
+DFRobotGravityDOMeter sensor;
+
+public override Task Initialize()
+{
+    Resolver.Log.Info("Initialize...");
+
+    sensor = new DFRobotGravityDOMeter(Device.Pins.A01);
+
+    // Example that uses an IObservable subscription to only be notified when the saturation changes
+    var consumer = DFRobotGravityDOMeter.CreateObserver(
+        handler: result =>
+        {
+            string oldValue = (result.Old is { } old) ? $"{old.MilligramsPerLiter:n0}" : "n/a";
+            string newValue = $"{result.New.MilligramsPerLiter:n0}";
+            Resolver.Log.Info($"New: {newValue}mg/l, Old: {oldValue}mg/l");
+        },
+        filter: null
+    );
+    sensor.Subscribe(consumer);
+
+    // optional classical .NET events can also be used:
+    sensor.Updated += (sender, result) =>
+    {
+        string oldValue = (result.Old is { } old) ? $"{old.MilligramsPerLiter}mg/l" : "n/a";
+        Resolver.Log.Info($"Updated - New: {result.New.MilligramsPerLiter:n0}mg/l, Old: {oldValue}");
+    };
+
+    return Task.CompletedTask;
+}
+
+public override async Task Run()
+{
+    Resolver.Log.Info("Run...");
+
+    await ReadSensor();
+
+    sensor.StartUpdating(TimeSpan.FromSeconds(2));
+}
+
+protected async Task ReadSensor()
+{
+    var concentration = await sensor.Read();
+    Resolver.Log.Info($"Initial concentration: {concentration.MilligramsPerLiter:N0}mg/l");
+}
+
+```
+## How to Contribute
+
+- **Found a bug?** [Report an issue](https://github.com/WildernessLabs/Meadow_Issues/issues)
+- Have a **feature idea or driver request?** [Open a new feature request](https://github.com/WildernessLabs/Meadow_Issues/issues)
+- Want to **contribute code?** Fork the [Meadow.Foundation](https://github.com/WildernessLabs/Meadow.Foundation) repository and submit a pull request against the `develop` branch
+
+
+## Need Help?
+
+If you have questions or need assistance, please join the Wilderness Labs [community on Slack](http://slackinvite.wildernesslabs.co/).

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.DFRobotGravityDOMeter/Driver/Sensors.Environmental.DFRobotGravityDOMeter.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Meadow.Sdk/1.1.0">
+  <PropertyGroup>
+    <PackageReadmeFile>Readme.md</PackageReadmeFile>
+    <Nullable>enable</Nullable>
+    <LangVersion>10.0</LangVersion>
+    <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <PackageIcon>icon.png</PackageIcon>
+    <Authors>Wilderness Labs, Inc</Authors>
+    <TargetFramework>netstandard2.1</TargetFramework>
+    <OutputType>Library</OutputType>
+    <AssemblyName>DFRobotGravityDOMeter</AssemblyName>
+    <Company>Wilderness Labs, Inc</Company>
+    <PackageProjectUrl>http://developer.wildernesslabs.co/Meadow/Meadow.Foundation/</PackageProjectUrl>
+    <PackageId>Meadow.Foundation.Sensors.Environmental.DFRobotGravityDOMeter</PackageId>
+    <RepositoryUrl>https://github.com/WildernessLabs/Meadow.Foundation</RepositoryUrl>
+    <PackageTags>Meadow,Meadow.Foundation,Environmental,DFRobot,Gravity,DO,Dissolved,Oxygen,Meter</PackageTags>
+    <Version>0.1.0</Version>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <Description>DFRobot analog gravity dissolved oxygen sensor</Description>
+  </PropertyGroup>
+  <ItemGroup>
+    <None Include=".\Readme.md" Pack="true" PackagePath=""/>
+    <None Include="..\..\..\icon.png" Pack="true" PackagePath="" />
+    <ProjectReference Include="..\..\..\Meadow.Foundation.Core\Meadow.Foundation.Core.csproj" />
+  </ItemGroup>
+</Project>

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.DFRobotGravityDOMeter/Samples/DFRobotGravityDOMeter_Sample/DFRobotGravityDOMeter_Sample.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Meadow.Sdk/1.1.0">
+  <PropertyGroup>
+    <RepositoryUrl>https://github.com/WildernessLabs/Meadow.Foundation</RepositoryUrl>
+    <Company>Wilderness Labs, Inc</Company>
+    <Authors>Wilderness Labs, Inc</Authors>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <TargetFramework>netstandard2.1</TargetFramework>
+    <OutputType>Library</OutputType>
+    <AssemblyName>App</AssemblyName>
+  </PropertyGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\..\Meadow.Core\Source\implementations\f7\Meadow.F7\Meadow.F7.csproj" />
+    <ProjectReference Include="..\..\Driver\Sensors.Environmental.DFRobotGravityDOMeter.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Update="meadow.config.yaml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+</Project>

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.DFRobotGravityDOMeter/Samples/DFRobotGravityDOMeter_Sample/MeadowApp.cs

@@ -0,0 +1,60 @@
+using Meadow;
+using Meadow.Devices;
+using Meadow.Foundation.Sensors.Environmental;
+using System;
+using System.Threading.Tasks;
+
+namespace Sensors.Environmental.DFRobotGravityDOMeter_Sample
+{
+    public class MeadowApp : App<F7FeatherV2>
+    {
+        //<!=SNIP=>
+
+        DFRobotGravityDOMeter sensor;
+
+        public override Task Initialize()
+        {
+            Resolver.Log.Info("Initialize...");
+
+            sensor = new DFRobotGravityDOMeter(Device.Pins.A01);
+
+            // Example that uses an IObservable subscription to only be notified when the saturation changes
+            var consumer = DFRobotGravityDOMeter.CreateObserver(
+                handler: result =>
+                {
+                    string oldValue = (result.Old is { } old) ? $"{old.MilligramsPerLiter:n0}" : "n/a";
+                    string newValue = $"{result.New.MilligramsPerLiter:n0}";
+                    Resolver.Log.Info($"New: {newValue}mg/l, Old: {oldValue}mg/l");
+                },
+                filter: null
+            );
+            sensor.Subscribe(consumer);
+
+            // optional classical .NET events can also be used:
+            sensor.Updated += (sender, result) =>
+            {
+                string oldValue = (result.Old is { } old) ? $"{old.MilligramsPerLiter}mg/l" : "n/a";
+                Resolver.Log.Info($"Updated - New: {result.New.MilligramsPerLiter:n0}mg/l, Old: {oldValue}");
+            };
+
+            return Task.CompletedTask;
+        }
+
+        public override async Task Run()
+        {
+            Resolver.Log.Info("Run...");
+
+            await ReadSensor();
+
+            sensor.StartUpdating(TimeSpan.FromSeconds(2));
+        }
+
+        protected async Task ReadSensor()
+        {
+            var concentration = await sensor.Read();
+            Resolver.Log.Info($"Initial concentration: {concentration.MilligramsPerLiter:N0}mg/l");
+        }
+
+        //<!=SNOP=>
+    }
+}

Source/Meadow.Foundation.Peripherals/Sensors.Environmental.DFRobotGravityDOMeter/Samples/DFRobotGravityDOMeter_Sample/meadow.config.yaml

@@ -0,0 +1,2 @@
+MonoControl:
+    Options: --jit

Source/Meadow.Foundation.Peripherals/Sensors.Temperature.Thermistor/Driver/Readme.md

@@ -31,7 +31,7 @@ public override Task Initialize()
     );
     thermistor.Subscribe(consumer);
 
-    thermistor.TemperatureUpdated += (object sender, IChangeResult<Meadow.Units.Temperature> e) =>
+    thermistor.Updated += (object sender, IChangeResult<Meadow.Units.Temperature> e) =>
     {
         Resolver.Log.Info($"Temperature Updated: {e.New.Fahrenheit:N1}F/{e.New.Celsius:N1}C");
     };