platform: esp32: mqtt: set client id based on chip id

.vscode/tasks.json

@@ -0,0 +1,29 @@
+{
+	"version": "2.0.0",
+	"tasks": [
+		{
+			"type": "cargo",
+			"command": "build",
+			"problemMatcher": [
+				"$rustc"
+			],
+			"group": {
+				"kind": "build",
+				"isDefault": true
+			},
+			"label": "rust: cargo build"
+		},
+		{
+			"type": "cargo",
+			"command": "espflash flash --no-stub --monitor",
+			"problemMatcher": [
+				"$rustc"
+			],
+			"group": {
+				"kind": "build",
+				"isDefault": false
+			},
+			"label": "rust: cargo espflash"
+		}
+	]
+}

espflash.toml

@@ -0,0 +1 @@
+partition_table = "partitions.csv"

partitions.csv

@@ -0,0 +1,5 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+# Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
+nvs,      data, nvs,     ,        0x6000,
+phy_init, data, phy,     ,        0x1000,
+factory,  app,  factory, ,        3M,

src/TODO.md

@@ -1,15 +1,18 @@
 [x] cfg macros
 [ ] warnings
 [x] rgb crate
-[ ] Layer blending
-[ ] Refactor idle pattern into test pattern
-[ ] Wifi
+[x] Layer blending
+[x] Refactor idle pattern into test pattern
+[x] Wifi
 [ ] JSON surface map loading
 [ ] Weather
-[ ] Circadian Rhythm
-[ ] NTP
+[x] Circadian Rhythm
+[x] NTP
 [ ] Config to only start a subset of tasks on startup
 [ ] Serial CLI
 [ ] Surface blending API
 [ ] Layer blending equations
 [ ] Surface rotation
+[ ] esp8266 port
+[ ] event system
+[ ] threaded schedulers

src/animations.rs

@@ -2,6 +2,7 @@ use palette::Hsv;
 
 use rgb::RGB8;
 
+use crate::events::{Event, EventBus};
 use crate::time::Periodically;
 use crate::geometry::*;
 use crate::render::{Shader, Surface, Surfaces};
@@ -57,15 +58,17 @@ impl Shader for ThinkingShader {
 impl<T: Surface> IdleTask<T> {
     pub fn new<S: Surfaces<Surface = T>>(surfaces: &mut S) -> Self {
         IdleTask {
-            solid: surfaces.new_surface(&Rectangle::everything()).unwrap(),
-            surface: surfaces.new_surface(&Rectangle::everything()).unwrap(),
-            shimmer: surfaces.new_surface(&Rectangle::everything()).unwrap(),
+            solid: surfaces.new_surface(Rectangle::everything()).unwrap(),
+            surface: surfaces.new_surface(Rectangle::everything()).unwrap(),
+            shimmer: surfaces.new_surface(Rectangle::everything()).unwrap(),
         }
     }
 }
 
 impl<T: Surface> Task for IdleTask<T> {
-    fn start(&mut self) {
+    fn name(&self) -> &'static str { "Idle" }
+
+    fn start(&mut self, _bus: &mut EventBus) {
         self.solid.set_shader(Box::new(SolidShader { }));
         self.surface.set_shader(Box::new(ThinkingShader { }));
         self.shimmer.set_shader(Box::new(ShimmerShader { }));
@@ -75,9 +78,7 @@ impl<T: Surface> Task for IdleTask<T> {
         self.shimmer.set_opacity(64);
     }
 
-    fn tick(&mut self) {}
-
-    fn stop(&mut self) {
+    fn stop(&mut self, _bus: &mut EventBus) {
         self.solid.clear_shader();
         self.surface.clear_shader();
         self.shimmer.clear_shader();
@@ -168,22 +169,24 @@ impl<T: Surface> TestPattern<T> {
 }
 
 impl<T: Surface> Task for TestPattern<T> {
-    fn start(&mut self) {
-        self.surface.set_shader(Box::new(self.pattern.clone()));
+    fn name(&self) -> &'static str { "TestPattern" }
+
+    fn start(&mut self, _bus: &mut EventBus) {
+        self.surface.set_shader(Box::new(self.pattern));
     }
 
-    fn tick(&mut self) {
+    fn on_tick(&mut self, bus: &mut EventBus) {
         self.updater.run(|| {
             self.pattern = self.pattern.next();
             log::info!("Test pattern: {:?}", self.pattern);
             self.frame = 0;
-            self.surface.set_shader(Box::new(self.pattern.clone()));
+            self.surface.set_shader(Box::new(self.pattern));
+            bus.push(Event::new_property_change("animations.test.pattern", format!("{:?}", self.pattern)));
         });
         self.stepper.run(|| {
             self.frame = self.frame.wrapping_add(1);
             self.surface.set_opacity(sin8(self.frame));
-            //log::info!("Step {}", self.frame);
-            self.surface.set_rect( &match self.pattern {
+            self.surface.set_rect( match self.pattern {
                 TestShader::SweepX => Rectangle::new(
                     Coordinates::new(self.frame, 0),
                     Coordinates::new(self.frame, 255)
@@ -197,7 +200,7 @@ impl<T: Surface> Task for TestPattern<T> {
         });
     }
 
-    fn stop(&mut self) {
+    fn stop(&mut self, _bus: &mut EventBus) {
         self.surface.clear_shader();
     }
 }

src/buffers.rs

@@ -1,3 +1,4 @@
+use crate::events::EventBus;
 use crate::geometry::*;
 use crate::lib8::interpolate::Fract8Ops;
 use crate::power::AsMilliwatts;
@@ -5,7 +6,6 @@ use crate::render::{PixelView, Sample, Shader, Surface, Surfaces, HardwarePixel}
 use crate::task::Task;
 
 use std::fmt::Debug;
-use std::io;
 use std::ops::IndexMut;
 
 use std::sync::atomic::AtomicBool;
@@ -81,9 +81,9 @@ impl Surface for BufferedSurface {
         });
     }
 
-    fn set_rect(&mut self, rect: &Rectangle<Virtual>) {
+    fn set_rect(&mut self, rect: Rectangle<Virtual>) {
         self.updater.push(SurfaceUpdate {
-            rect: Some(rect.clone()),
+            rect: Some(rect),
             slot: self.slot,
             ..Default::default()
         });
@@ -178,12 +178,12 @@ impl Surfaces for ShaderChain {
     type Error = ();
     type Surface = BufferedSurface;
 
-    fn new_surface(&mut self, area: &Rectangle<Virtual>) -> Result<Self::Surface, Self::Error> {
+    fn new_surface(&mut self, area: Rectangle<Virtual>) -> Result<Self::Surface, Self::Error> {
         let next_slot = self.bindings.len();
         self.bindings.push(ShaderBinding {
             opacity: 255,
             shader: None,
-            rect: area.clone()
+            rect: area
         });
 
         Ok(BufferedSurface {
@@ -224,7 +224,7 @@ impl BufferedSurfacePool {
 impl Surfaces for BufferedSurfacePool {
     type Error = ();
     type Surface = <ShaderChain as Surfaces>::Surface;
-    fn new_surface(&mut self, area: &crate::geometry::Rectangle<crate::geometry::Virtual>) -> Result<Self::Surface, Self::Error> {
+    fn new_surface(&mut self, area: crate::geometry::Rectangle<crate::geometry::Virtual>) -> Result<Self::Surface, Self::Error> {
         self.pool.write().unwrap().new_surface(area)
     }
 
@@ -235,91 +235,13 @@ impl Surfaces for BufferedSurfacePool {
 
 
 impl Task for BufferedSurfacePool {
-    fn tick(&mut self) {
+    fn on_tick(&mut self, _bus: &mut EventBus) {
         if self.pool.read().unwrap().is_dirty() {
             self.pool.write().unwrap().commit();
         }
     }
 }
 
-#[derive(Clone)]
-pub struct SharedSurface {
-    binding: Arc<Mutex<ShaderBinding>>
-}
-
-
-impl Default for SharedSurface {
-    fn default() -> Self {
-        Self {
-            binding: Arc::new(Mutex::new(ShaderBinding {
-                shader: None,
-                rect: Rectangle::everything(),
-                opacity: 255
-            })),
-        }
-    }
-}
-
-impl Surface for SharedSurface {
-    fn set_shader(&mut self, shader: Box<dyn Shader>) {
-        self.binding.lock().unwrap().shader = Some(shader);
-    }
-
-    fn clear_shader(&mut self) {
-        self.binding.lock().unwrap().shader = None;
-    }
-
-    fn set_rect(&mut self, rect: &Rectangle<Virtual>) {
-        self.binding.lock().unwrap().rect = rect.clone();
-    }
-
-    fn set_opacity(&mut self, opacity: u8) {
-        self.binding.lock().unwrap().opacity = opacity
-    }
-}
-
-
-#[derive(Clone)]
-pub struct SurfacePool {
-    surfaces: Vec<SharedSurface>
-}
-
-impl SurfacePool {
-    pub const fn new() -> Self {
-        Self {
-            surfaces: Vec::new()
-        }
-    }
-}
-
-impl Surfaces for SurfacePool {
-    type Surface = SharedSurface;
-    type Error = io::Error;
-    fn new_surface(&mut self, area: &Rectangle<Virtual>) -> Result<Self::Surface, Self::Error> {
-        let mut surface = SharedSurface::default();
-        surface.set_rect(area);
-        self.surfaces.push(surface.clone());
-        return Ok(surface);
-    }
-
-    fn render_to<Sampler: Sample>(&self, output: &mut Sampler, frame: usize) {
-        for surface in self.surfaces.iter() {
-            let binding = surface.binding.lock().unwrap();
-            let opacity = binding.opacity;
-            if opacity > 0 {
-                let rect = binding.rect;
-                let mut sample = output.sample(&rect);
-
-                if let Some(ref shader) = binding.shader {
-                    while let Some((virt_coords, pixel)) = sample.next() {
-                        *pixel = pixel.blend8(shader.draw(&virt_coords, frame).into(), opacity);
-                    }
-                }
-            }
-        }
-    }
-}
-
 pub trait Pixbuf: AsMilliwatts + IndexMut<usize, Output=Self::Pixel> + Send {
     type Pixel: HardwarePixel;
     fn new() -> Self;

src/events.rs

@@ -0,0 +1,211 @@
+use core::fmt::{Debug, Display};
+use std::{collections::{LinkedList, VecDeque}, sync::{Arc, Mutex}};
+
+use rgb::Rgb;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum Variant {
+    SignedByte(i8),
+    Byte(u8),
+    UInt(u32),
+    Int(i32),
+    BigUInt(u64),
+    BigInt(i64),
+    Boolean(bool),
+    String(String),
+    RGB(Rgb<u8>)
+}
+
+macro_rules! impl_variant_type {
+    ($type:ty, $var_type:tt) => {
+        impl From<$type> for Variant {
+            fn from(value: $type) -> Self {
+                Variant::$var_type(value)
+            }
+        }
+
+        impl Into<$type> for Variant {
+            fn into(self) -> $type {
+                match self {
+                    Variant::$var_type(value) => value,
+                    _ => panic!("Expected Variant::$var_type, but got {:?}", self)
+                }
+            }
+        }
+    };
+}
+
+impl_variant_type!(u8, Byte);
+impl_variant_type!(i8, SignedByte);
+impl_variant_type!(u32, UInt);
+impl_variant_type!(i32, Int);
+impl_variant_type!(i64, BigInt);
+impl_variant_type!(u64, BigUInt);
+impl_variant_type!(bool, Boolean);
+impl_variant_type!(String, String);
+impl_variant_type!(Rgb<u8>, RGB);
+
+impl<'a> From<&'a str> for Variant {
+    fn from(value: &'a str) -> Self {
+        Variant::String(value.to_owned())
+    }
+}
+
+impl Display for Variant {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Variant::BigInt(i) => (i as &dyn Display).fmt(f),
+            Variant::BigUInt(i) => (i as &dyn Display).fmt(f),
+            Variant::Boolean(i) => (i as &dyn Display).fmt(f),
+            Variant::Byte(i) => (i as &dyn Display).fmt(f),
+            Variant::Int(i) => (i as &dyn Display).fmt(f),
+            Variant::String(i) => (i as &dyn Display).fmt(f),
+            Variant::UInt(i) => (i as &dyn Display).fmt(f),
+            Variant::SignedByte(b) => (b as &dyn Display).fmt(f),
+            Variant::RGB(rgb) => f.write_fmt(format_args!("[{}, {}, {}]", rgb.r, rgb.g, rgb.b)),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum Event {
+    ReadyToRock,
+    Tick,
+    StartThing(&'static str),
+    StopThing(&'static str),
+    PropertyChange(&'static str, Variant)
+}
+
+impl Event {
+    pub const fn new_tick() -> Self {
+        Event::Tick
+    }
+
+    pub fn new_property_change<T>(key: &'static str, data: T) -> Self where Variant: From<T> {
+        Event::PropertyChange(key, Variant::from(data))
+    }
+
+    pub const fn new_ready_to_rock() -> Self {
+        Event::ReadyToRock
+    }
+
+    pub const fn new_start_thing(name: &'static str) -> Self {
+        Event::StartThing(name)
+    }
+
+    pub const fn new_stop_thing(name: &'static str) -> Self {
+        Event::StopThing(name)
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct Property {
+    key: &'static str,
+    value: Variant
+}
+
+impl Property {
+    pub const fn new(key: &'static str, value: Variant) -> Self {
+        Property {
+            key,
+            value: value
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Properties {
+    contents: LinkedList<Property>
+}
+
+impl Properties {
+    fn new() -> Self {
+        Properties {
+            contents: LinkedList::new()
+        }
+    }
+
+    fn get_key(&self, key: &'static str) -> Option<&Property> {
+        for next in self.contents.iter() {
+            if next.key == key {
+                return Some(next);
+            }
+        }
+
+        return None;
+    }
+
+    fn get_key_mut(&mut self, key: &'static str) -> Option<&mut Property> {
+        for next in self.contents.iter_mut() {
+            if next.key == key {
+                return Some(next);
+            }
+        }
+
+        return None;
+    }
+
+    pub fn get(&self, key: &'static str) -> Option<Variant> {
+        match self.get_key(key) {
+            None => None,
+            Some(v) => Some(v.value.clone())
+        }
+    }
+
+    pub fn set<V>(&mut self, key: &'static str, value: V) -> bool where Variant: From<V> {
+        let as_variant: Variant = value.into();
+        match self.get_key_mut(key) {
+            None => {
+                self.contents.push_front(Property::new(key, as_variant));
+                return true
+            },
+            Some(found_key) => {
+                if found_key.value != as_variant {
+                    found_key.value = as_variant;
+                    return true
+                }
+            }
+        }
+
+        return false
+    }
+}
+
+#[derive(Clone)]
+pub struct EventBus {
+    pending: Arc<Mutex<VecDeque<Event>>>,
+    props: Arc<Mutex<Properties>>
+}
+
+impl EventBus {
+    pub fn new() -> Self {
+        EventBus {
+            pending: Arc::new(Mutex::new(VecDeque::with_capacity(32))),
+            props: Arc::new(Mutex::new(Properties::new()))
+        }
+    }
+
+    pub fn next(&mut self) -> Event {
+        let next = self.pending.lock().unwrap().pop_front().unwrap_or(Event::new_tick());
+
+        match next {
+            Event::PropertyChange(key, value) => {
+                if self.props.lock().unwrap().set(key, value.clone()) {
+                    log::trace!("prop-update key={} value={:?}", key, value);
+                    Event::PropertyChange(key, value)
+                } else {
+                    Event::new_tick()
+                }
+            },
+            _ => next
+        }
+    }
+
+    pub fn push(&mut self, event: Event) {
+        self.pending.lock().unwrap().push_back(event);
+    }
+
+    pub fn property(&self, key: &'static str) -> Option<Variant> {
+        self.props.lock().unwrap().get(key)
+    }
+}

src/geometry.rs

@@ -64,19 +64,19 @@ impl<S: CoordinateSpace> Coordinates<S> {
         }
     }
 
-    fn top_left() -> Self {
+    const fn top_left() -> Self {
         Self::new(S::Data::MIN, S::Data::MIN)
     }
 
-    fn top_right() -> Self {
+    const fn top_right() -> Self {
         Self::new(S::Data::MAX, S::Data::MIN)
     }
 
-    fn bottom_left() -> Self {
+    const fn bottom_left() -> Self {
         Self::new(S::Data::MIN, S::Data::MAX)
     }
 
-    fn bottom_right() -> Self {
+    const fn bottom_right() -> Self {
         Self::new(S::Data::MAX, S::Data::MAX)
     }
 
@@ -101,15 +101,13 @@ pub struct Rectangle<Space: CoordinateSpace> {
 
 impl<Space: CoordinateSpace> Rectangle<Space> {
     pub const fn new(top_left: Coordinates<Space>, bottom_right: Coordinates<Space>) -> Self {
-        //debug_assert!(top_left.x <= bottom_right.x);
-        //debug_assert!(top_left.y <= bottom_right.y);
         Self {
             top_left,
             bottom_right
         }
     }
 
-    pub fn everything() -> Self {
+    pub const fn everything() -> Self {
         Self {
             top_left: Coordinates::<Space>::top_left(),
             bottom_right: Coordinates::<Space>::bottom_right()

src/lib8/interpolate.rs

@@ -82,6 +82,25 @@ pub fn lerp7by8(a: i8, b: i8, frac: u8) -> i8 {
     }
 }
 
+pub fn lerp8by8(a: u8, b: u8, frac: u8) -> u8 {
+    if b > a {
+        let delta = b - a;
+        let scaled = scale8(delta, frac);
+        return a + scaled;
+    } else {
+        let delta = a - b;
+        let scaled = scale8(delta, frac);
+        return a - scaled;
+    }
+}
+
+pub fn map8(x: u8, range_start: u8, range_end: u8) -> u8 {
+    let range_width = range_end - range_start;
+    let mut out = scale8(x, range_width);
+    out += range_start;
+    return out;
+}
+
 pub fn ease8InOutQuad(i: u8) -> u8 {
     let j = if i & 0x80 != 0 {
         255 - i

src/main.rs

@@ -8,7 +8,14 @@ mod platform;
 mod animations;
 mod mappings;
 mod buffers;
+mod events;
+mod scenes;
 
+use events::Event;
+use rgb::Rgb;
+use scenes::Sequencer;
+
+use crate::events::EventBus;
 use crate::platform::{DefaultBoard, Board};
 use crate::task::{FixedSizeScheduler, Scheduler};
 use crate::render::{Surfaces, Renderer};
@@ -17,32 +24,69 @@ use crate::geometry::Rectangle;
 fn main() {
     let mut board: DefaultBoard = Board::take();
 
-    log::info!("Board: {}", core::any::type_name_of_val(&board));
+    log::info!("🐛 Booting Renderbug!");
 
-    log::info!("Creating tasks");
+    log::info!("📡 Board {}", core::any::type_name_of_val(&board));
+
+    log::info!("⚙️ Creating tasks");
     let mut system = board.system_tasks();
-    log::info!("System scheduler: {}", core::any::type_name_of_val(&system));
+    log::info!("⏰ System scheduler: {}", core::any::type_name_of_val(&system));
 
-    log::info!("Creating output");
+    log::info!("💡 Creating output");
     let output = board.output();
     log::info!("Output: {}", core::any::type_name_of_val(&output));
 
-    log::info!("Preparing surfaces");
+    log::info!("🎨 Preparing surfaces");
     let mut surfaces = board.surfaces();
     log::info!("Surface implementation: {}", core::any::type_name_of_val(&output));
 
-    log::info!("Creating animations");
+    log::info!("🌌 Creating animations");
     let mut animations = FixedSizeScheduler::new([
         Box::new(animations::IdleTask::new(&mut surfaces)),
-        Box::new(animations::TestPattern::new(surfaces.new_surface(&Rectangle::everything()).unwrap())),
+        Box::new(animations::TestPattern::new(surfaces.new_surface(Rectangle::everything()).unwrap())),
+    ]);
+
+    let mut inputs = FixedSizeScheduler::new([
+        Box::new(Sequencer::new()),
     ]);
 
     let mut renderer = FixedSizeScheduler::new([Box::new(Renderer::new(output, surfaces))]);
 
-    log::info!("Ready to rock and roll");
+    log::info!("🚌 Starting event bus");
+    let mut bus = EventBus::new();
+
+    bus.push(Event::new_property_change("colors.primary", Rgb::new(255, 128, 128)));
+    bus.push(Event::new_property_change("system.board.chip_id", DefaultBoard::chip_id()));
+    bus.push(Event::new_property_change("system.network.online", false));
+
+    log::info!("Priming events...");
+    let initial_tasks = [
+        "Renderer",
+        "renderbug::scenes::Sequencer",
+        "renderbug::buffers::BufferedSurfacePool",
+        "renderbug::platform::esp32::WifiTask",
+        "renderbug::platform::esp32::MqttTask",
+        "renderbug::platform::esp32::CircadianRhythm"
+    ];
+    for task_name in initial_tasks {
+        bus.push(Event::new_start_thing(task_name));
+        log::info!("+ {}", task_name);
+    }
+    bus.push(Event::new_ready_to_rock());
+
+    log::info!("🚀 Launching...");
     loop {
-        animations.tick();
-        system.tick();
-        renderer.tick();
+        let next_event = bus.next();
+        match next_event {
+            events::Event::Tick => (),
+            Event::ReadyToRock => {
+                log::info!("🚀 Ready to rock and roll");
+            }
+            _ => log::info!("⚡ Event: {:?}", next_event)
+        }
+        inputs.tick(&next_event, &mut bus);
+        animations.tick(&next_event, &mut bus);
+        system.tick(&next_event, &mut bus);
+        renderer.tick(&next_event, &mut bus);
     }
 }

src/mappings.rs

@@ -20,7 +20,7 @@ pub trait Select<'a> {
 
 #[derive(Debug)]
 pub struct LinearCoordView {
-    rect: Rectangle<Virtual>,
+    max_x: u8,
     idx: usize,
 }
 
@@ -34,7 +34,7 @@ pub type LinearCoords = Coordinates<LinearSpace>;
 impl<'a> CoordinateView<'a> for LinearCoordView {
     type Space = LinearSpace;
     fn next(&mut self) -> Option<(VirtualCoordinates, LinearCoords)> {
-        if self.idx as u8 == self.rect.bottom_right.x {
+        if self.idx as u8 == self.max_x {
             None
         } else {
             let virt = VirtualCoordinates::new(self.idx as u8, 0); // FIXME: scale8
@@ -62,7 +62,7 @@ impl<'a> Select<'a> for LinearPixelMapping {
     type View = LinearCoordView;
     fn select(&'a self, rect: &Rectangle<Virtual>) -> Self::View {
         LinearCoordView {
-            rect: rect.clone(),
+            max_x: rect.bottom_right.x,
             idx: 0,
         }
     }
@@ -101,6 +101,30 @@ impl<const STRIDE_NUM: usize> StrideMapping<STRIDE_NUM> {
         ])
     }
 
+    pub fn new_fairylights() -> Self {
+        Self::from_json(&[
+            (0, 0, 50, false)
+        ])
+    }
+
+    pub fn new_cyberplague() -> Self {
+        Self::from_json(&[
+            (0, 6, 6, false),
+            (1, 6, 6, true),
+            (2, 6, 6, false),
+            (3, 4, 9, true),
+            (4, 4, 14, false),
+            (5, 0, 17, true),
+            (6, 2, 12, false),
+            (7, 0, 18, true),
+            (8, 4, 14, false),
+            (9, 5, 9, true),
+            (10, 4, 7, false),
+            (11, 5, 6, true),
+            (12, 5, 6, false)
+        ])
+    }
+
     pub fn new_jar() -> Self {
         Self::from_json(&[
             (0, 0, 17, false),
@@ -145,6 +169,12 @@ impl<const STRIDE_NUM: usize> StrideMapping<STRIDE_NUM> {
         ])
     }
 
+    pub fn new_albus() -> Self {
+        Self::from_json(&[
+            (0, 0, 50 * 3, false)
+        ])
+    }
+
     pub fn from_json(stride_json: &[(u8, u8, u8, bool)]) -> Self {
         let mut strides = [Stride::default(); STRIDE_NUM];
         let stride_count = stride_json.len();
@@ -185,8 +215,6 @@ impl<const STRIDE_NUM: usize> StrideMapping<STRIDE_NUM> {
         let s = size.take().unwrap();
         log::info!("size={:?}", s);
 
-        log::info!("strides={:?}", strides);
-
         Self {
             strides,
             pixel_count: physical_idx,

src/platform/embedded_graphics_lib.rs

@@ -98,7 +98,7 @@ impl<T: LedPixelShape, S: Surface> Display<S> for EmbeddedDisplay<Ws2812DrawTarg
                 let mut pixel = RGB8::new(0, 0, 0);
                 for surface in self.surfaces.iter() {
                     surface.with_shader(|shader| {
-                        pixel = pixel.saturating_add(shader.draw(virtCoords.clone()));
+                        pixel = pixel.saturating_add(shader.draw(virtCoords));
                     })
                 }
                 self.total_mw += pixel.as_milliwatts();

src/platform/esp32.rs

@@ -1,18 +1,22 @@
-use core::borrow::BorrowMut;
-use std::sync::Arc;
 use std::fmt::Debug;
-use std::sync::Mutex;
+use std::thread::JoinHandle;
 
 use chrono::DateTime;
+use chrono::Timelike;
 use chrono::Utc;
 
 use esp_idf_svc::eventloop::{EspSubscription, EspSystemEventLoop, System};
+use esp_idf_svc::hal::gpio::Pins;
 use esp_idf_svc::hal::modem::Modem;
 use esp_idf_svc::hal::prelude::Peripherals;
+use esp_idf_svc::hal::rmt::RMT;
 use esp_idf_svc::hal::task::thread::ThreadSpawnConfiguration;
+use esp_idf_svc::mqtt::client::EspMqttClient;
+use esp_idf_svc::mqtt::client::MqttClientConfiguration;
 use esp_idf_svc::netif::IpEvent;
 use esp_idf_svc::nvs::{EspDefaultNvsPartition, EspNvsPartition, NvsDefault};
 use esp_idf_svc::sntp::EspSntp;
+use esp_idf_svc::sntp::SyncStatus;
 use esp_idf_svc::sys::esp_efuse_mac_get_default;
 use esp_idf_svc::wifi::{AuthMethod, ClientConfiguration, Configuration, EspWifi, WifiEvent};
 use rgb::Rgb;
@@ -23,73 +27,35 @@ use super::Board;
 
 use crate::buffers::BufferedSurfacePool;
 use crate::buffers::Pixbuf;
+use crate::events::Event;
+use crate::events::EventBus;
+use crate::events::Variant;
+use crate::lib8::interpolate::lerp8by8;
 use crate::mappings::StrideMapping;
 use crate::task::FixedSizeScheduler;
 use crate::task::Task;
 use crate::time::Periodically;
 
-pub mod i2s {
-    use esp_idf_svc::hal::i2s::*;
-    use rgb::ComponentBytes;
-    use rgb::Rgb;
-    
-    use crate::mappings::*;
-    use crate::buffers::Pixbuf;
-    use crate::render::Output;
-    use crate::render::Sample;
-
-    pub struct I2SOutput<'d> {
-        driver: I2sDriver<'d, I2sTx>,
-        pixbuf: [Rgb<u8>; 310],
-        pixmap: StrideMapping,
-    }
-
-    impl<'d> I2SOutput<'d> {
-        fn new(driver: I2sDriver<'d, I2sTx>) -> Self {
-            I2SOutput {
-                driver,
-                pixbuf: Pixbuf::new(),
-                pixmap: StrideMapping::new_jar()
-            }
-        }
-    }
-
-    impl<'d> Output for I2SOutput<'d> {
-        fn blank(&mut self) {
-            self.pixbuf.blank();
-        }
-
-        fn commit(&mut self) {
-            let bytes = self.pixbuf.as_bytes();
-            let mut written = self.driver.preload_data(bytes).unwrap();
-            self.driver.tx_enable().unwrap();
-            while written < bytes.len() {
-                let next = &bytes[written..];
-                written += self.driver.write(next, 0).unwrap();
-            }
-            self.driver.tx_disable().unwrap();
-        }
-    }
-
-    impl<'d> Sample for I2SOutput<'d> {
-        type Pixel = Rgb<u8>;
-        fn sample(&mut self, rect: &crate::geometry::Rectangle<crate::geometry::Virtual>) -> impl crate::render::PixelView<Pixel = Self::Pixel> {
-            StrideSampler::new(&mut self.pixbuf, self.pixmap.select(rect))
-        }
-    }
-}
-
 pub struct Esp32Board {
     sys_loop: EspSystemEventLoop,
     modem: Option<Modem>,
+    pins: Option<Pins>,
+    rmt: Option<RMT>,
     surfaces: BufferedSurfacePool,
-    output: Option<<Self as Board>::Output>
 }
 
 impl Board for Esp32Board {
     type Output = StrideOutput<[Rgb<u8>; 310], FastWs2812Esp32Rmt<'static>>;
     type Surfaces = BufferedSurfacePool;
-    type Scheduler = FixedSizeScheduler<2>;
+    type Scheduler = FixedSizeScheduler<4>;
+
+    fn chip_id() -> u64 {
+        let mut chip_id: [u8; 8] = [0; 8];
+        unsafe {
+            esp_efuse_mac_get_default(&mut chip_id as *mut u8);
+        }
+        return u64::from_be_bytes(chip_id);
+    }
 
     fn take() -> Self {
         // It is necessary to call this function once. Otherwise some patches to the runtime
@@ -102,18 +68,25 @@ impl Board for Esp32Board {
         let peripherals = Peripherals::take().unwrap();
         let sys_loop = EspSystemEventLoop::take().unwrap();
 
-        let mut chip_id: [u8; 8] = [0; 8];
-        unsafe {
-            esp_efuse_mac_get_default(&mut chip_id as *mut u8);
+        Esp32Board {
+            modem: Some(peripherals.modem),
+            sys_loop: sys_loop,
+            surfaces: BufferedSurfacePool::new(),
+            pins: Some(peripherals.pins),
+            rmt: Some(peripherals.rmt)
+        }
     }
 
-        log::info!("Setting up output for chip ID {:x?}", chip_id);
+    fn output(&mut self) -> Self::Output {
+
+        log::info!("Setting up output for chip ID {:x?}", Self::chip_id());
 
         const POWER_VOLTS : u32 = 5;
         const POWER_MA : u32 = 500;
         const MAX_POWER_MW : u32 = POWER_VOLTS * POWER_MA;
-        let pins = peripherals.pins;
 
+        let pins = self.pins.take().unwrap();
+        let rmt = self.rmt.take().unwrap();
         ThreadSpawnConfiguration {
             pin_to_core: Some(esp_idf_svc::hal::cpu::Core::Core1),
             ..Default::default()
@@ -122,20 +95,52 @@ impl Board for Esp32Board {
         // But the implementation spawns a thread based on the core the driver was created in,
         // so we create the driver in another thread briefly.
         // Fun stuff.
-        let output = match chip_id {
+        let output = match Self::chip_id().to_be_bytes() { // panel test board
             [72, 202, 67, 89, 145, 204, 0, 0] => {
                 StrideOutput::new(
                     Pixbuf::new(),
                     StrideMapping::new_panel(), 
-                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(peripherals.rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
                     MAX_POWER_MW
                 )
             },
-            [0x8C, 0xAA, 0xB5, 0x83, 0x5f, 0x74, 0x0, 0x0] => {
+            [0x8C, 0xAA, 0xB5, 0x83, 0x5f, 0x74, 0x0, 0x0] => { //ponderjar
                 StrideOutput::new(
                     Pixbuf::new(),
                     StrideMapping::new_jar(),
-                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(peripherals.rmt.channel0, pins.gpio14).unwrap() }).join().unwrap(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio14).unwrap() }).join().unwrap(),
+                    MAX_POWER_MW
+                )
+            },
+            [0x4a, 0xca, 0x43, 0x59, 0x85, 0x58, 0x0, 0x0] => { // Albus the tree
+                StrideOutput::new(
+                    Pixbuf::new(),
+                    StrideMapping::new_albus(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
+                    MAX_POWER_MW
+                )
+            },
+            [0x48, 0xca, 0x43, 0x59, 0x9d, 0x48, 0x0, 0x0] => { // kitchen cabinets
+                StrideOutput::new(
+                    Pixbuf::new(),
+                    StrideMapping::new_fairylights(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
+                    MAX_POWER_MW
+                )
+            },
+            [0x48, 0xca, 0x43, 0x59, 0x9e, 0xdc, 0x0, 0x0] => { // front window
+                StrideOutput::new(
+                    Pixbuf::new(),
+                    StrideMapping::new_fairylights(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
+                    MAX_POWER_MW
+                )
+            },
+            [0xfc, 0xf5, 0xc4, 0x05, 0xb8, 0x30, 0x0, 0x0] => { // cyberplague
+                StrideOutput::new(
+                    Pixbuf::new(),
+                    StrideMapping::new_cyberplague(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio13).unwrap() }).join().unwrap(),
                     MAX_POWER_MW
                 )
             },
@@ -143,7 +148,7 @@ impl Board for Esp32Board {
                 StrideOutput::new(
                     Pixbuf::new(),
                     StrideMapping::new(), 
-                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(peripherals.rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
+                    std::thread::spawn(move || { FastWs2812Esp32Rmt::new(rmt.channel0, pins.gpio5).unwrap() }).join().unwrap(),
                     MAX_POWER_MW
                 )
             }
@@ -152,16 +157,7 @@ impl Board for Esp32Board {
             ..Default::default()
         }.set().unwrap();
 
-        Esp32Board {
-            modem: Some(peripherals.modem),
-            sys_loop: sys_loop.clone(),
-            surfaces: BufferedSurfacePool::new(),
-            output: Some(output)
-        }
-    }
-
-    fn output(&mut self) -> Self::Output {
-        self.output.take().unwrap()
+        output
     }
 
     fn surfaces(&mut self) -> Self::Surfaces {
@@ -172,44 +168,227 @@ impl Board for Esp32Board {
         let nvs = EspDefaultNvsPartition::take().unwrap();
         FixedSizeScheduler::new([
             Box::new(WifiTask::new(self.modem.take().unwrap(), self.sys_loop.clone(), &nvs)),
+            Box::new(CircadianRhythm::new()),
+            Box::new(MqttTask::new()),
             Box::new(self.surfaces.clone())
         ])
     }
 }
 
+#[derive(Debug, Clone)]
+struct ScheduleEntry {
+    hour: u8,
+    brightness: u8
+}
+
+struct CircadianRhythm {
+    time_check: Periodically,
+    schedule: [ScheduleEntry;10]
+}
+
+impl CircadianRhythm {
+    fn new() -> Self {
+        CircadianRhythm {
+            time_check: Periodically::new_every_n_seconds(60),
+            schedule: [
+                ScheduleEntry { hour: 0, brightness: 0 },
+                ScheduleEntry { hour: 5, brightness: 0 },
+                ScheduleEntry { hour: 6, brightness: 10 },
+                ScheduleEntry { hour: 7, brightness: 20 },
+                ScheduleEntry { hour: 8, brightness: 80 },
+                ScheduleEntry { hour: 11, brightness: 120 },
+                ScheduleEntry { hour: 18, brightness: 200 },
+                ScheduleEntry { hour: 19, brightness: 255 },
+                ScheduleEntry { hour: 22, brightness: 120 },
+                ScheduleEntry { hour: 23, brightness: 5 }
+            ]
+        }
+    }
+
+    fn update_brightness(&self, bus: &mut EventBus) {
+        let now: DateTime<Utc> = std::time::SystemTime::now().into();
+        let next_brightness = self.brightness_for_time(now.hour() as u8, now.minute() as u8);
+        bus.push(Event::new_property_change("output.brightness", next_brightness));
+    }
+
+    fn brightness_for_time(&self, hour: u8, minute: u8) -> u8 {
+        let mut start = self.schedule.last().unwrap();
+        let mut end = self.schedule.first().unwrap();
+        for cur in self.schedule.iter() {
+            if cur.hour <= hour {
+                start = cur;
+            } else {
+                end = cur;
+                break;
+            }
+        }
+
+        log::info!("hour={:?} minute={:?} start={:?} end={:?}", hour, minute, start, end);
+
+        let mut adjusted_end = end.clone();
+        if start.hour > end.hour {
+            adjusted_end.hour += 24;
+        }
+
+        let start_time = (start.hour as u16).wrapping_mul(60);
+        let end_time = (end.hour as u16).wrapping_mul(60);
+        let now_time = (hour as u16).wrapping_mul(60).wrapping_add(minute as u16);
+
+        let duration = end_time - start_time;
+        let cur_duration = now_time - start_time;
+
+        let frac = map_range(cur_duration.into(), 0, duration.into(), 0, 255) as u8;
+
+        lerp8by8(start.brightness, end.brightness, frac)
+    }
+}
+
+fn map_range(x: u16, in_min: u16, in_max: u16, out_min: u16, out_max: u16) -> u16 {
+    let run = in_max - in_min;
+    if run == 0 {
+        return 0;
+    }
+    let rise = out_max - out_min;
+    let delta = x - in_min;
+    return (delta * rise) / run + out_min;
+}
+
+
+impl Task for CircadianRhythm {
+    fn on_ready(&mut self, bus: &mut EventBus) {
+        self.update_brightness(bus);
+    }
+
+    fn on_property_change(&mut self, key: &'static str, value: &Variant, bus: &mut EventBus) {
+        match (key, value) {
+            ("system.time.synchronized", Variant::Boolean(true)) => self.update_brightness(bus),
+            _ => ()
+        }
+    }
+
+    fn on_tick(&mut self, bus: &mut EventBus) {
+        if self.time_check.tick() {
+            self.update_brightness(bus);
+        }
+    }
+}
+
+struct MqttTask {
+    client: Option<EspMqttClient<'static>>,
+    conn_thread: Option<JoinHandle<()>>,
+}
+
+impl MqttTask {
+    fn new() -> Self {
+        MqttTask {
+            conn_thread: None,
+            client: None,
+        }
+    }
+
+    fn start_mqtt(&mut self, bus: &EventBus) {
+        log::info!("Starting MQTT");
+        let chip_id: u64 = bus.property("system.board.chip_id").unwrap().into();
+        let (client, mut conn) = EspMqttClient::new(
+            "mqtt://10.0.0.2:1883",
+            &MqttClientConfiguration {
+                client_id: Some(&format!("{:X}", chip_id)),
+                ..Default::default()
+            }
+        ).unwrap();
+        log::info!("Connected!");
+
+        self.conn_thread = Some(std::thread::Builder::new()
+            .stack_size(6000)
+            .spawn(move || {
+                conn.next().unwrap();
+            }).unwrap());
+        self.client = Some(client);
+    }
+
+    fn topic_prefix(bus: &EventBus) -> String {
+        let chip_id: u64 = bus.property("system.board.chip_id").unwrap().into();
+
+        format!("homeassistant-test/renderbug/{:X}", chip_id)
+    }
+}
+
+impl Task for MqttTask {
+    fn start(&mut self, bus: &mut EventBus) {
+        bus.push(Event::new_property_change("mqtt.online", false));
+    }
+
+    fn on_property_change(&mut self, key: &'static str, value: &Variant, bus: &mut EventBus) {
+        match (key, value) {
+            ("system.network.online", Variant::Boolean(true)) => {
+                log::info!("Registering with MQTT");
+
+                self.start_mqtt(bus);
+
+                if let Some(ref mut client) = self.client {
+                    client.enqueue(
+                        Self::topic_prefix(bus).as_str(),
+                        esp_idf_svc::mqtt::client::QoS::AtLeastOnce,
+                        false,
+                        "hello, world".as_bytes()
+                    ).unwrap();
+                    log::info!("MQTT should be online!");
+
+                    bus.push(Event::new_property_change("mqtt.online", true));
+                }
+            },
+            (name, value) => {
+                if let Some(ref mut client) = self.client {
+                    let prefix = Self::topic_prefix(bus);
+
+                    client.enqueue(
+                        format!("{}/properties/{}", prefix, name).as_str(),
+                        esp_idf_svc::mqtt::client::QoS::AtLeastOnce,
+                        false,
+                        format!("{}", value).as_bytes()
+                    ).unwrap();
+                }
+            }
+        }
+    }
+}
+
 impl Debug for WifiTask {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.debug_struct("WifiTask").finish()
     }
 }
 
-#[derive(Debug, PartialEq, Clone, Copy)]
-enum WifiState {
-    Stopped,
-    Disconnected,
-    Connecting,
-    Connected
-}
-
 struct WifiTask {
     wifi: EspWifi<'static>,
     ntp: EspSntp<'static>,
     connection_check: Periodically,
-    state: Arc<Mutex<WifiState>>,
-    last_state: WifiState,
     sys_loop: EspSystemEventLoop,
     wifi_sub: Option<EspSubscription<'static, System>>,
-    ip_sub: Option<EspSubscription<'static, System>>
+    ip_sub: Option<EspSubscription<'static, System>>,
 }
 
 impl WifiTask {
     fn new(modem: Modem, sys_loop: EspSystemEventLoop, nvs: &EspNvsPartition<NvsDefault>) -> Self {
         log::info!("Installing wifi driver");
-        let mut wifi = EspWifi::new(
+        let wifi = EspWifi::new(
             modem,
             sys_loop.clone(),
             Some(nvs.clone())
         ).unwrap();
+
+        WifiTask {
+            wifi,
+            ntp: EspSntp::new_default().unwrap(),
+            connection_check: Periodically::new_every_n_seconds(1),
+            sys_loop,
+            wifi_sub: None,
+            ip_sub: None,
+        }
+    }
+
+    fn connect(&mut self) {
+        log::info!("Connecting wifi");
         let wifi_config = Configuration::Client(ClientConfiguration {
             ssid: "The Frequency".try_into().unwrap(),
             bssid: None,
@@ -218,22 +397,7 @@ impl WifiTask {
             channel: None,
             ..Default::default()
         });
-        wifi.set_configuration(&wifi_config).unwrap();
-
-        WifiTask {
-            wifi,
-            ntp: EspSntp::new_default().unwrap(),
-            connection_check: Periodically::new_every_n_seconds(1),
-            state: Arc::new(Mutex::new(WifiState::Stopped)),
-            last_state: WifiState::Stopped,
-            sys_loop,
-            wifi_sub: None,
-            ip_sub: None
-        }
-    }
-
-    fn connect(&mut self) {
-        log::info!("Connecting wifi");
+        self.wifi.set_configuration(&wifi_config).unwrap();
         self.wifi.start().unwrap();
         self.wifi.connect().unwrap();
     }
@@ -246,67 +410,44 @@ impl WifiTask {
 }
 
 impl Task for WifiTask {
-    fn start(&mut self) {
+    fn start(&mut self, bus: &mut EventBus) {
         log::info!("Starting wifi!");
-
-        let wifi_state = self.state.clone();
+        let mut wifi_bus = bus.clone();
         self.wifi_sub = Some(self.sys_loop.subscribe::<WifiEvent, _>( move |evt| {
-            log::warn!("wifi event {:?}", evt);
-            let next_state = match evt {
-                WifiEvent::StaStopped => Some(WifiState::Disconnected),
-                WifiEvent::StaDisconnected => Some(WifiState::Disconnected),
-                WifiEvent::StaStarted => Some(WifiState::Connecting),
-                WifiEvent::StaConnected => Some(WifiState::Connecting),
-                _ => None
-            };
-
-            match next_state {
-                Some(s) => {
-                    let mut state = wifi_state.lock().unwrap();
-                    *state = s
-                },
-                None => ()
-            }
+            log::debug!("wifi event {:?}", evt);
+            wifi_bus.push(Event::new_property_change("system.network.online", false));
         }).unwrap());
-        let ip_state = self.state.clone();
+        let mut ip_bus = bus.clone();
         self.ip_sub = Some(self.sys_loop.subscribe::<IpEvent, _>(move |evt| {
-            log::warn!("ip event {:?}", evt);
+            log::debug!("ip event {:?}", evt);
             match evt {
-                IpEvent::DhcpIpAssigned(_) => {
-                    let mut state = ip_state.lock().unwrap();
-                    *state = WifiState::Connected;
+                IpEvent::DhcpIpAssigned(addr) => {
+                    ip_bus.push(Event::new_property_change("system.network.ip", addr.ip().to_string()));
+                    ip_bus.push(Event::new_property_change("system.network.gateway", addr.gateway().to_string()));
+                    ip_bus.push(Event::new_property_change("system.network.online", true));
                 },
                 _ => ()
             }
         }).unwrap());
-
         self.connect();
     }
 
-    fn tick(&mut self ) {
+    fn on_tick(&mut self, bus: &mut EventBus) {
         if self.connection_check.tick() {
-            let cur_state = *self.state.lock().unwrap();
-
-            if self.last_state != cur_state {
-                match cur_state {
-                    WifiState::Connected => log::info!("Wifi connected!"),
-                    WifiState::Connecting => log::info!("Connecting!"),
-                    WifiState::Stopped => log::info!("Stopped!"),
-                    WifiState::Disconnected => log::info!("Disconnected!")
+            if bus.property("system.network.online").unwrap() == Variant::Boolean(true) {
+                match self.ntp.get_sync_status() {
+                    SyncStatus::Completed => bus.push(Event::new_property_change("system.time.synchronized", true)),
+                    _ => bus.push(Event::new_property_change("system.time.synchronized", false))
                 }
-
-                log::info!("online: {:?}", cur_state);
-
-                self.last_state = cur_state;
             }
-
-            let now: DateTime<Utc> = std::time::SystemTime::now().into();
-            log::info!("Current time: {} status={:?}", now.format("%d/%m/%Y %T"), self.ntp.get_sync_status());
         }
     }
 
-    fn stop(&mut self) {
+    fn stop(&mut self, bus: &mut EventBus) {
         log::info!("Stopping wifi");
+        self.wifi_sub.take().unwrap();
+        self.ip_sub.take().unwrap();
         self.disconnect();
+        bus.push(Event::new_property_change("system.network.online", false));
     }
 }

src/platform/mod.rs

@@ -20,4 +20,5 @@ pub trait Board {
     fn output(&mut self) -> Self::Output;
     fn surfaces(&mut self) -> Self::Surfaces;
     fn system_tasks(&mut self) -> Self::Scheduler;
+    fn chip_id() -> u64;
 }

src/platform/smart_leds_lib.rs

@@ -1,6 +1,7 @@
 use smart_leds_trait::SmartLedsWrite;
 
 use crate::buffers::Pixbuf;
+use crate::events::Variant;
 use crate::render::{HardwarePixel, Output, PixelView, Sample};
 use crate::power::brightness_for_mw;
 use crate::geometry::*;
@@ -18,7 +19,8 @@ pub struct StrideOutput<P: Pixbuf, T: FastWrite> {
     pixbuf: P,
     stride_map: StrideMapping,
     target: T,
-    max_mw: u32
+    max_mw: u32,
+    brightness: u8
 }
 
 impl<P: Pixbuf, T: FastWrite> StrideOutput<P, T> {
@@ -28,7 +30,8 @@ impl<P: Pixbuf, T: FastWrite> StrideOutput<P, T> {
             pixbuf,
             stride_map,
             target,
-            max_mw
+            max_mw,
+            brightness: 255
         }
     }
 }
@@ -46,11 +49,18 @@ impl<P: Pixbuf<Pixel=T::Color>, T: FastWrite> Output for StrideOutput<P, T> {
     }
 
     fn commit(&mut self) {
-        let b = brightness_for_mw(self.pixbuf.as_milliwatts(), 255, self.max_mw);
+        let b = brightness_for_mw(self.pixbuf.as_milliwatts(), self.brightness, self.max_mw);
         if self.target.fast_write(self.pixbuf.iter_with_brightness(b)).is_err() {
             panic!("Could not write frame!");
         };
     }
+
+    fn on_event(&mut self, event: &crate::events::Event) {
+        match event {
+            crate::events::Event::PropertyChange("output.brightness", Variant::Byte(new_brightness)) => self.brightness = *new_brightness,
+            _ => ()
+        }
+    }
 }
 
 pub trait FastWrite: Send {

src/render.rs

@@ -1,5 +1,6 @@
 use rgb::Rgb;
 
+use crate::events::{Event, EventBus};
 use crate::geometry::*;
 use crate::lib8::interpolate::Fract8Ops;
 use crate::power::AsMilliwatts;
@@ -29,7 +30,7 @@ pub trait Shader: Send + Sync {
 pub trait Surfaces: Send + Sync {
     type Surface: Surface;
     type Error: Debug;
-    fn new_surface(&mut self, area: &Rectangle<Virtual>) -> Result<Self::Surface, Self::Error>;
+    fn new_surface(&mut self, area: Rectangle<Virtual>) -> Result<Self::Surface, Self::Error>;
     fn render_to<S: Sample>(&self, output: &mut S, frame: usize);
 }
 
@@ -37,11 +38,12 @@ pub trait Surface: Send + Sync {
     fn set_shader(&mut self, shader: Box<dyn Shader>);
     fn clear_shader(&mut self);
 
-    fn set_rect(&mut self, rect: &Rectangle<Virtual>);
+    fn set_rect(&mut self, rect: Rectangle<Virtual>);
     fn set_opacity(&mut self, opacity: u8);
 }
 
 pub trait Output: Sample + Send {
+    fn on_event(&mut self, event: &Event);
     fn blank(&mut self);
     fn commit(&mut self);
 }
@@ -52,7 +54,8 @@ pub struct Renderer<T: Output, S: Surfaces> {
     surfaces: S,
     fps: RealTimeRunningAverage<u32>,
     fps_display: Periodically,
-    frame: usize
+    frame: usize,
+    frame_count: usize
 }
 
 impl<T: Output, S: Surfaces> Renderer<T, S> {
@@ -62,7 +65,8 @@ impl<T: Output, S: Surfaces> Renderer<T, S> {
             surfaces: surfaces,
             fps: RealTimeRunningAverage::default(),
             fps_display: Periodically::new_every_n_seconds(5),
-            frame: 0
+            frame: 0,
+            frame_count: 0
         }
     }
 }
@@ -70,17 +74,23 @@ impl<T: Output, S: Surfaces> Renderer<T, S> {
 impl<T: Output, S: Surfaces> Task for Renderer<T, S> {
     fn name(&self) -> &'static str { "Renderer" }
 
-    fn tick(&mut self) {
+    fn on_property_change(&mut self, key: &'static str, value: &crate::events::Variant, _bus: &mut EventBus) {
+        self.output.on_event(&Event::new_property_change(key, value.clone()));
+    }
+
+    fn on_tick(&mut self, bus: &mut EventBus) {
         self.output.blank();
 
         self.surfaces.render_to(&mut self.output, self.frame);
 
         self.output.commit();
 
-        self.fps.insert(1);
         self.frame += 1;
         self.fps_display.run(|| {
-            log::info!("FPS: {}", self.fps.measurement());
+            self.fps.insert((self.frame - self.frame_count) as u32);
+            self.frame_count = self.frame;
+            let fps = self.fps.measurement();
+            bus.push(Event::new_property_change("output.fps", fps.rate() as u32));
         });
     }
 }

src/scenes.rs

@@ -0,0 +1,111 @@
+use std::str::FromStr;
+
+use crate::task::Task;
+use crate::events::*;
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+struct Scene {
+    name: &'static str,
+    patterns: Vec<&'static str>,
+    trigger: Trigger
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+enum Trigger {
+    Startup,
+    PropertyEquals(&'static str, Variant)
+}
+
+pub struct Sequencer {
+    scenes: Vec<Scene>,
+    cur_scene: String
+}
+
+impl Sequencer {
+    pub fn new() -> Self {
+        Sequencer {
+            cur_scene: String::new(),
+            scenes: vec![
+                Scene {
+                    name: "Start",
+                    patterns: vec!["Idle"],
+                    trigger: Trigger::Startup
+                },
+                Scene {
+                    name: "Online",
+                    patterns: vec!["Idle"],
+                    trigger: Trigger::PropertyEquals("system.network.online", Variant::Boolean(true))
+                }
+            ]
+        }
+    }
+
+    fn get_scene(&self, name: &String) -> Option<&Scene> {
+        for scene in self.scenes.iter() {
+            if scene.name == name {
+                return Some(scene);
+            }
+        }
+
+        return None;
+    }
+
+    fn apply_scene(&mut self, name: &String, bus: &mut EventBus) {
+        if let Some(dst_tasks) = self.get_scene(name) {
+            if let Some(src_tasks) = self.get_scene(&self.cur_scene) {
+                let stop_queue = src_tasks.patterns.iter().filter(|i| !dst_tasks.patterns.contains(i));
+                let start_queue = dst_tasks.patterns.iter().filter(|i| !src_tasks.patterns.contains(i));
+
+                log::info!("Switching scene from {} to {}", self.cur_scene, name);
+
+                for stop in stop_queue {
+                    bus.push(Event::new_stop_thing(stop));
+                }
+                for start in start_queue {
+                    bus.push(Event::new_start_thing(start));
+                }
+            } else {
+                log::info!("Starting new scene {}", name);
+                log::info!("start={:?}", dst_tasks.patterns);
+                for start in dst_tasks.patterns.iter() {
+                    bus.push(Event::new_start_thing(start));
+                }
+            }
+            self.cur_scene = name.clone();
+        } else {
+            panic!("Could not apply scene {:?} scenes={:?}", name, self.scenes);
+        }
+    }
+}
+
+impl Task for Sequencer {
+    fn start(&mut self, bus: &mut EventBus) {
+        log::info!("Starting sequencer!!!");
+
+        let startup_scene = self.scenes.iter().filter(|i| { i.trigger == Trigger::Startup }).next().unwrap();
+        bus.push(Event::new_property_change("scenes.current", startup_scene.name));
+    }
+
+    fn on_property_change(&mut self, key: &'static str, value: &Variant, bus: &mut EventBus) {
+        match (key, value) {
+            ("scenes.current", Variant::String(scene_name)) => {
+                log::info!("Applying scene");
+                self.apply_scene(scene_name, bus);
+            },
+            (key, value) => {
+                for scene in self.scenes.iter() {
+                    match scene.trigger {
+                        Trigger::PropertyEquals(trigger_key, ref trigger_value) => {
+                            if trigger_key == key && trigger_value == value {
+                                log::info!("Triggering scene {}", scene.name);
+                                bus.push(Event::new_property_change("scenes.current", scene.name))
+                            }
+                        },
+                        _ => ()
+                    }
+                }
+            }
+            _ => ()
+        }
+    }
+}

src/task.rs

@@ -1,15 +1,20 @@
 use core::fmt;
 
+use crate::events::{Event, EventBus, Variant};
+
 pub trait Task: Send {
-    fn tick(&mut self) {}
-    fn start(&mut self) {}
-    fn stop(&mut self) {}
+    fn on_ready(&mut self, bus: &mut EventBus) {}
+    fn on_tick(&mut self, bus: &mut EventBus) {}
+    fn on_property_change(&mut self, key: &'static str, value: &Variant, bus: &mut EventBus) {}
+    
+    fn start(&mut self, bus: &mut EventBus) {}
+    fn stop(&mut self, bus: &mut EventBus) {}
     fn name(&self) -> &'static str {
         core::any::type_name::<Self>()
     }
 }
 
-#[derive(Debug, Copy, Clone)]
+#[derive(Debug, Clone)]
 enum ScheduledState {
     Stopped,
     Start,
@@ -34,78 +39,112 @@ impl core::fmt::Debug for ScheduledTask {
 impl ScheduledTask {
     fn new(task: Box<dyn Task>) -> Self {
         ScheduledTask {
-            state: ScheduledState::Start,
+            state: ScheduledState::Stopped,
             task: task,
         }
     }
 
     fn start(&mut self) {
-        self.state = match self.state {
-            ScheduledState::Stopped => ScheduledState::Start,
-            ScheduledState::Stop => ScheduledState::Running,
-            _ => self.state
+        match self.state {
+            ScheduledState::Stopped => self.state = ScheduledState::Start,
+            ScheduledState::Stop => self.state = ScheduledState::Running,
+            _ => ()
         }
     }
 
     fn stop(&mut self) {
-        self.state = match self.state {
-            ScheduledState::Running => ScheduledState::Stop,
-            ScheduledState::Start => ScheduledState::Stopped,
-            _ => self.state
+        match self.state {
+            ScheduledState::Running => self.state = ScheduledState::Stop,
+            ScheduledState::Start => self.state = ScheduledState::Stopped,
+            _ => ()
         }
     }
 
-    fn tick(&mut self) {
-        self.state = match self.state {
+    fn tick(&mut self, event: &Event, bus: &mut EventBus) {
+        match self.state {
             ScheduledState::Start => {
                 log::info!("Starting task {}", self.task.name());
-                self.task.start();
-                ScheduledState::Running
-            },
-            ScheduledState::Running => {
-                self.task.tick();
-                ScheduledState::Running
+                self.task.start(bus);
+                self.state = ScheduledState::Running
             },
             ScheduledState::Stop => {
                 log::info!("Stopping task {}", self.task.name());
-                self.task.stop();
-                ScheduledState::Stopped
+                self.task.stop(bus);
+                self.state = ScheduledState::Stopped
             },
-            ScheduledState::Stopped => ScheduledState::Stopped
+            _ => ()
+        };
+
+        match self.state {
+            ScheduledState::Running => {
+                match event {
+                    Event::Tick => self.task.on_tick(bus),
+                    Event::ReadyToRock => self.task.on_ready(bus),
+                    Event::PropertyChange(key, value) => self.task.on_property_change(key, value, bus),
+                    _ => ()
+                }
+            },
+            _ => ()
         }
     }
 }
 
 #[derive(Debug)]
 pub struct FixedSizeScheduler<const TASK_COUNT: usize> {
-    tasks: [Option<ScheduledTask>; TASK_COUNT],
+    tasks: [ScheduledTask; TASK_COUNT],
 }
 
 impl<const TASK_COUNT: usize> FixedSizeScheduler<TASK_COUNT> {
 pub fn new(tasks: [Box<dyn Task>; TASK_COUNT]) -> Self {
-        let mut scheduled = [const { None }; TASK_COUNT];
+        let mut scheduled: [ScheduledTask; TASK_COUNT] = unsafe { std::mem::MaybeUninit::zeroed().assume_init() };
         let mut idx = 0;
         for task in tasks {
-            scheduled[idx] = Some(ScheduledTask::new(task));
+            log::info!("Scheduling task {}", task.name());
+            let slot = &mut scheduled[idx];
+            unsafe { std::ptr::write(slot, ScheduledTask::new(task)) };
             idx += 1;
         }
         FixedSizeScheduler {
             tasks: scheduled
         }
     }
+
+    fn find_task(&mut self, name: &str) -> Option<&mut ScheduledTask> {
+        for slot in &mut self.tasks {
+            if slot.task.name() == name {
+                return Some(slot);
+            }
+        }
+
+        None
+    }
 }
 
 impl<const TASK_COUNT: usize> Scheduler for FixedSizeScheduler<TASK_COUNT> {
-    fn tick(&mut self) {
+    fn tick(&mut self, event: &Event, bus: &mut EventBus) {
+        match event {
+            Event::StartThing(task_name) => {
+                if let Some(slot) = self.find_task(task_name) {
+                    log::debug!("Starting {}", task_name);
+                    slot.start();
+                }
+            },
+            Event::StopThing(task_name) => {
+                if let Some(slot) = self.find_task(task_name) {
+                    log::debug!("Stopping {}", task_name);
+                    slot.stop();
+                }
+            },
+            _ => {
                 for slot in &mut self.tasks {
-            match slot {
-                Some(task) => task.tick(),
-                _ => ()
+                    slot.tick(event, bus);
                 }
             }
         }
+
+    }
 }
 
 pub trait Scheduler {
-    fn tick(&mut self);
+    fn tick(&mut self, event: &Event, bus: &mut EventBus);
 }

src/time.rs

@@ -1,7 +1,7 @@
 use core::time::Duration;
 use std::time::Instant;
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug)]
 pub struct Periodically {
     last_run: Instant,
     duration: Duration