Update 1.9.0

docs/Meadow/Meadow.OS/Cellular/index.md

@@ -222,7 +222,7 @@ It's important to note that the `Csq` property returns a cached value obtained f
 ```csharp
 var cell = Device.NetworkAdapters.Primary<ICellNetworkAdapter>();
 
-double csq  = cellAdapter.GetSignalQuality();
+double csq  = cell.GetSignalQuality();
 Console.WriteLine("Cell Signal Quality: " + csq);
 ```
 
@@ -237,28 +237,29 @@ using Meadow.Foundation.Sensors.Location.Gnss;
 using Meadow.Peripherals.Sensors.Location.Gnss;
 using Meadow.Foundation.Sensors.Gnss;
 ...
-    void ProcessGnssPosition(object sender, IGnssResult location)
-    {
-        Resolver.Log.Info("*********************************************");
-        Resolver.Log.Info(location.ToString());
-        Resolver.Log.Info("*********************************************");  
-    }
+void ProcessGnssPosition(object sender, IGnssResult location)
+{
+   Resolver.Log.Info("*********************************************");
+   Resolver.Log.Info(location.ToString());
+   Resolver.Log.Info("*********************************************");  
+}
 ...
-    IGnssResult[] resultTypes = new IGnssResult[]
-    {
-        new GnssPositionInfo(),
-        new ActiveSatellites(),
-        new CourseOverGround(),
-        new SatellitesInView(new Satellite[0])
-    };
+IGnssResult[] resultTypes = new IGnssResult[]
+{
+   new GnssPositionInfo(),
+   new ActiveSatellites(),
+   new CourseOverGround(),
+   new SatellitesInView(new Satellite[0])
+};
 
-    ICellNetworkAdapter cell = networkAdapter as ICellNetworkAdapter;
+ICellNetworkAdapter cell = networkAdapter as ICellNetworkAdapter;
 
-    var bg95M3 = new Bg95M3(cellAdapter, TimeSpan.FromMinutes(30), resultTypes);
+var bg95M3 = new Bg95M3(cellAdapter, TimeSpan.FromMinutes(30), resultTypes);
 
-    bg95M3.GnssDataReceived += ProcessGnssPosition;
+bg95M3.GnssDataReceived += ProcessGnssPosition;
 
-    bg95M3.StartUpdating();
+bg95M3.StartUpdating();
+...
 ```
 
 For a more comprehensive example, you can refer to the [BG95-M3 GNSS sample](https://github.com/WildernessLabs/Meadow.Foundation/blob/develop/Source/Meadow.Foundation.Peripherals/Sensors.Gnss.Bg95M3/Samples/Bg95M3_Sample/MeadowApp.cs) available in the Meadow.Foundation repository.

docs/Meadow/Release_Notes/v1/index.md

@@ -5,6 +5,61 @@ title: Meadow v1.* Releases
 subtitle: Release Notes
 ---
 
+## v1.9.0
+
+Another big update for Meadow! We’ve added SPI DMA which reduces CPU load when communicating with SPI devices and can lead to a 30% increase in drawing performance with SPI displays!
+
+We’re also shipping a big stability improvement by improving how the OS manages and switches between threads.
+
+Note - starting with v1.9.0.0 and CLI v2.0, you’ll need to [create a free Wilderness Labs account](https://identity.wildernesslabs.co/signin/register) to download new versions of the Meadow OS. 
+
+### Meadow.OS
+
+* .NET threads are now using the round-robin OS scheduler. This should better match traditional .NET execution behavior and resolve issues of apps “livelocking” because of a tight loop preventing progress under the First-In, First-Out (FIFO) scheduler.
+* SPI DMA has been enabled for all SPI data transfers. Use of it should be transparent, providing approximately 3x throughput speed for SPI peripheral devices.
+* Changes to the threading on the coprocessor were made, resulting in greater stability for network requests
+* Several low-level fixes & improvements
+
+### Meadow.Core
+
+* Support has been added for F7 multi-platform targeting.  One app assembly can now contain IApp instances for multiple F7 hardware targets. (add link to docs)
+* `IPixelDisplayProvider` interface added for Meadow.Desktop platforms
+* SensorService now auto-registers any `ISleepAwarePeripherals` it knows about
+* Improvements to Core interrupt handling in F7 platforms
+* Interrupts events changed from containing a DateTime to a system tick (for performance reasons)
+* OtA Downloads now report progress via an event
+* Added “reason” to network disconnection events on F7 platforms
+* Added preliminary support for Raspberry Pi 5
+
+### Meadow.Foundation
+
+* FT232H/FTDI Driver refactored to support multiple devices at one time and to use the same driver (FT2xxx) for all modes
+* Improved partial update logic in MicroGraphics and TftSpi display drivers
+* BME688 gas resistance fix
+* SCD40 events fix
+
+#### Breaking changes
+
+* Renamed `IGraphicsDisplay` to `IPixelDisplay` and moved to `Meadow.Contracts` and changed namespace to `Meadow.Displays `
+* Moved `IPixelBuffer` to `Meadow.Contracts` and namespace changed to `Meadow.Displays`
+
+### Meadow.Cloud
+
+* Bug fix for Azure Event Grid data serialization
+* For over-the-air updates, we exposed a new event, `OnUpdateProgress` that is triggered periodically showing the update’s download progress expressed in bytes.
+
+### Meadow.Desktop
+
+* We have added support for `Meadow.Desktop` as a target. This allows a single app to target Windows, Mac or desktop Linux with auto-platform detection and simulated `IPixelDisplay`.
+
+### IoT Accelerators
+
+* Our GNSS Tracker got a big update with its v2 hardware iteration (which is packed with more sensors than its predecessor), including a revamped demo application displaying accurate atmospheric sensor data along with battery and solar input voltage.
+
+### Meadow.Tooling
+
+* [CLI v2.0](https://developer.wildernesslabs.co/Meadow/Meadow_Tools/Meadow_CLI/) has shipped! This is a massive rework of the command line tool used to communicate with Meadow devices and manage firmware. Note, with this new release, you will need to [create a free Wilderness Labs account](https://identity.wildernesslabs.co/signin/register) and sign in before downloading firmware updates.
+
 ## v1.8.0
 
 ### Meadow.OS & Meadow.Core