Add start screen / bmp rendering example

Cargo.lock

@@ -699,6 +699,7 @@ dependencies = [
  "shared-bus",
  "smart-leds",
  "static_cell",
+ "tinybmp",
 ]
 
 [[package]]
@@ -1269,6 +1270,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tinybmp"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "197cc000e382175ff15abd9c54c694ef80ef20cb07e7f956c71e3ea97fc8dc60"
+dependencies = [
+ "embedded-graphics",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.3"

Cargo.toml

@@ -32,3 +32,4 @@ port-expander = "0.4.0"
 shared-bus = { version = "0.3.0", features = ["xtensa"] }
 smart-leds = "0.3.0"
 static_cell = "1.2.0"
+tinybmp = "0.5.0"

src/demo_tasks.rs

@@ -5,10 +5,11 @@ use embedded_graphics::{
     pixelcolor::Rgb565,
     prelude::*,
     primitives::{PrimitiveStyle, Rectangle, StyledDrawable},
-    text::Text,
+    text::Text, image::Image,
 };
 use esp_backtrace as _;
 use esp_println::println;
+use tinybmp::Bmp;
 use crate::flow3r::display::Display;
 
 use smart_leds::SmartLedsWrite;
@@ -87,3 +88,18 @@ async fn move_rectangle<'a>(
     display.flush().await.unwrap();
     Timer::after(Duration::from_millis(10)).await;
 }
+
+pub async fn draw_start_screen(display: &mut Display) {
+    let bmp_data = include_bytes!("../img/logo.bmp");
+    let bmp = Bmp::from_slice(bmp_data).unwrap();
+    display.fill_solid(&display.bounding_box(), Rgb565::WHITE).unwrap();
+    Image::with_center(&bmp, display.bounding_box().center()).draw(display).unwrap();
+    Text::with_alignment(
+        "flow3-rs starting",
+        Point { x: 120, y: 180 },
+        MonoTextStyle::new(&FONT_6X10, Rgb565::BLACK),
+        embedded_graphics::text::Alignment::Center
+    ).draw(display).unwrap();
+    display.flush().await.unwrap();
+    display.set_backlight(100).unwrap();
+}
\ No newline at end of file

src/main.rs

@@ -8,6 +8,7 @@ mod flow3r;
 mod runtime;
 mod demo_tasks;
 
+use demo_tasks::draw_start_screen;
 use embassy_executor::Spawner;
 use embassy_time::{Duration, Timer};
 
@@ -24,7 +25,10 @@ fn runtime() -> ! {
 }
 
 #[embassy_executor::task]
-async fn main(flow3r: Flow3r) -> ! {
+async fn main(mut flow3r: Flow3r) -> ! {
+    draw_start_screen(&mut flow3r.display).await;
+    Timer::after(Duration::from_secs(10)).await;
+    
     let spawner = Spawner::for_current_executor().await;
     spawner.spawn(demo_tasks::leds_fade(flow3r.leds)).ok();
     spawner.spawn(demo_tasks::display_demo(flow3r.display)).ok();