From a34e297c3395d9a1e4cfac966bc72c2f8ad66352 Mon Sep 17 00:00:00 2001
From: Adrian Stevens <adrian.stevens@gmail.com>
Date: Sun, 10 Dec 2023 15:43:45 -0800
Subject: [PATCH] Use IGasResistanceSensor interface

---
 .../Driver/Bme68x.cs                          | 26 ++++++++++++-------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/Source/Meadow.Foundation.Peripherals/Sensors.Atmospheric.Bme68x/Driver/Bme68x.cs b/Source/Meadow.Foundation.Peripherals/Sensors.Atmospheric.Bme68x/Driver/Bme68x.cs
index 63781f3702..23aa3500c0 100644
--- a/Source/Meadow.Foundation.Peripherals/Sensors.Atmospheric.Bme68x/Driver/Bme68x.cs
+++ b/Source/Meadow.Foundation.Peripherals/Sensors.Atmospheric.Bme68x/Driver/Bme68x.cs
@@ -1,6 +1,7 @@
 using Meadow.Hardware;
 using Meadow.Peripherals.Sensors;
 using Meadow.Peripherals.Sensors.Atmospheric;
+using Meadow.Peripherals.Sensors.Environmental;
 using Meadow.Units;
 using Meadow.Utilities;
 using System;
@@ -22,16 +23,12 @@ public abstract partial class Bme68x :
                             RelativeHumidity? Humidity,
                             Pressure? Pressure,
                             Resistance? GasResistance)>,
-        ITemperatureSensor, IHumiditySensor, IBarometricPressureSensor, ISpiPeripheral, II2cPeripheral, IDisposable
+        ITemperatureSensor, IHumiditySensor, IBarometricPressureSensor, IGasResistanceSensor, ISpiPeripheral, II2cPeripheral, IDisposable
     {
-        private event EventHandler<IChangeResult<Units.Temperature>> _temperatureHandlers;
-        private event EventHandler<IChangeResult<RelativeHumidity>> _humidityHandlers;
-        private event EventHandler<IChangeResult<Pressure>> _pressureHandlers;
-
-        /// <summary>
-        /// Raised when the gas resistance value changes
-        /// </summary>
-        public event EventHandler<IChangeResult<Resistance>> GasResistanceUpdated = default!;
+        private event EventHandler<IChangeResult<Units.Temperature>> _temperatureHandlers = default!;
+        private event EventHandler<IChangeResult<RelativeHumidity>> _humidityHandlers = default!;
+        private event EventHandler<IChangeResult<Pressure>> _pressureHandlers = default!;
+        private event EventHandler<IChangeResult<Resistance>> _gasResistanceHandlers = default!;
 
         /// <summary>
         /// The temperature oversampling mode
@@ -292,6 +289,12 @@ event EventHandler<IChangeResult<Pressure>> ISamplingSensor<Pressure>.Updated
             remove => _pressureHandlers -= value;
         }
 
+        event EventHandler<IChangeResult<Resistance>> ISamplingSensor<Resistance>.Updated
+        {
+            add => _gasResistanceHandlers += value;
+            remove => _gasResistanceHandlers -= value;
+        }
+
         /// <summary>
         /// Initialize the sensor
         /// </summary>
@@ -430,7 +433,7 @@ protected override void RaiseEventsAndNotify(IChangeResult<(Units.Temperature? T
             }
             if (changeResult.New.GasResistance is { } gasResistance)
             {
-                GasResistanceUpdated?.Invoke(this, new ChangeResult<Resistance>(gasResistance, changeResult.Old?.GasResistance));
+                _gasResistanceHandlers?.Invoke(this, new ChangeResult<Resistance>(gasResistance, changeResult.Old?.GasResistance));
             }
             base.RaiseEventsAndNotify(changeResult);
         }
@@ -669,5 +672,8 @@ async Task<RelativeHumidity> ISensor<RelativeHumidity>.Read()
 
         async Task<Pressure> ISensor<Pressure>.Read()
             => (await Read()).Pressure!.Value;
+
+        async Task<Resistance> ISensor<Resistance>.Read()
+            => (await Read()).GasResistance!.Value;
     }
 }