feat: working basic impl

.cargo/config.toml

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+[env]
+DEFMT_LOG="info"
+
+[build]
+target    = "xtensa-esp32-none-elf"
+rustflags = [
+  # "-C", "link-arg=-Tdefmt.x",
+  "-C", "link-arg=-Tlinkall.x",
+  "-C", "link-arg=-nostartfiles",
+]
+
+[target.xtensa-esp32-none-elf]
+runner = "espflash flash --monitor"
+
+[unstable]
+build-std = ["core"]

.gitignore

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+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb
+
+# RustRover
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

Cargo.toml

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+[package]
+name         = "kolibri-cyd-tester-app-embassy"
+version      = "0.1.0"
+edition      = "2021"
+rust-version = "1.76.0"
+
+[[bin]]
+name = "firmware"
+path = "src/bin/firmware.rs"
+
+[lib]
+
+[dependencies]
+display-interface = "0.5.0"
+display-interface-spi = "0.5.0"
+embassy-embedded-hal = "0.2.0"
+# defmt            = "0.3.8"
+# defmt-rtt        = "0.4.1"
+embassy-executor = { version = "0.6.0",  features = ["log"] }
+embassy-sync = "0.6.0"
+embassy-time     = { version = "0.3.1",  features = ["generic-queue-8"] }
+embedded-graphics = "0.8.1"
+embedded-hal = "1.0.0"
+esp-backtrace    = { version = "0.14.1", features = ["esp32", "println", "exception-handler", "panic-handler"] }
+esp-hal          = { version = "0.20.1", features = ["esp32", "log", "async"] }
+esp-hal-embassy  = { version = "0.3.0",  features = ["esp32", "log"] }
+esp-println = { version = "0.11.0", features = ["esp32", "log"] }
+heapless = { version = "0.8.0", features = ["serde"] }
+kolibri-embedded-gui = { git = "https://github.com/Yandrik/kolibri.git", version = "0.0.0-alpha.1" }
+mipidsi = "0.8.0"
+static_cell      = { version = "2.1.0",  features = ["nightly"] }
+xpt2046 = { git = "https://github.com/Yandrik/xpt2046.git", version = "0.3.1" }
+
+[profile.release]
+debug         = true  # Debug info is useful, and does not affect the size of the final binary
+codegen-units = 1     # LLVM can perform better optimizations using a single thread
+lto           = "fat" # Attempt to perform optimizations across all crates within the dependency graph
+opt-level     = "s"   # Optimize for binary size, but keep loop vectorization enabled

rust-toolchain.toml

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+[toolchain]
+channel    = "esp"
+components = ["rust-src"]
+targets    = ["xtensa-esp32-none-elf"]

rustfmt.toml

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+# Edition
+edition = "2021"
+
+# Comments
+format_code_in_doc_comments = true
+normalize_comments          = true
+wrap_comments               = true
+
+# Imports
+group_imports       = "StdExternalCrate"
+imports_granularity = "Crate"
+imports_layout      = "HorizontalVertical"
+
+# Miscellaneous
+enum_discrim_align_threshold = 25
+hex_literal_case             = "Upper"

src/bin/firmware.rs

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+#![no_std]
+#![no_main]
+
+use core::cell::RefCell;
+
+use display_interface_spi::SPIInterface;
+use embassy_embedded_hal::shared_bus::blocking::spi::SpiDevice;
+use embassy_executor::Spawner;
+use embassy_sync::{
+    blocking_mutex::{raw::NoopRawMutex, NoopMutex},
+    signal::Signal,
+};
+use embassy_time::{Duration, Timer};
+use embedded_graphics::{mono_font::ascii, prelude::Point};
+use embedded_graphics::pixelcolor::Rgb565;
+use embedded_graphics::prelude::RgbColor;
+use esp_backtrace as _;
+use esp_hal::{
+    clock::ClockControl,
+    gpio,
+    gpio::{GpioPin, Input, Io, Level, Output, Pull, NO_PIN},
+    peripherals::{Peripherals, SPI2, SPI3},
+    prelude::*,
+    rtc_cntl::Rtc,
+    spi::{master::Spi, FullDuplexMode, SpiMode},
+    system::SystemControl,
+    timer::{timg::TimerGroup, OneShotTimer},
+};
+use esp_println::println;
+use kolibri_cyd_tester_app_embassy::Debouncer;
+use kolibri_embedded_gui::{button::Button, label::Label, style::medsize_rgb565_style, ui::Ui};
+use kolibri_embedded_gui::ui::Interaction;
+use mipidsi::{
+    models::{ILI9486Rgb565, ILI9486Rgb666},
+    options::{ColorInversion, ColorOrder, Orientation, Rotation},
+    Builder,
+};
+use static_cell::{make_static, StaticCell};
+use xpt2046::Xpt2046;
+
+#[embassy_executor::task]
+async fn touch_task(
+    touch_irq: GpioPin<36>,
+    spi: &'static mut NoopMutex<RefCell<Spi<'static, SPI3, FullDuplexMode>>>,
+    touch_cs: GpioPin<33>,
+    touch_signal: &'static Signal<NoopRawMutex, Option<Point>>,
+) -> ! {
+    let mut touch_driver = Xpt2046::new(
+        SpiDevice::new(spi, Output::new(touch_cs, Level::Low)),
+        Input::new(touch_irq, Pull::Up),
+        xpt2046::Orientation::LandscapeFlipped,
+    );
+    touch_driver.set_num_samples(32);
+    touch_driver.init(&mut embassy_time::Delay).unwrap();
+
+    let mut debounce = Debouncer::new();
+    println!("touch task");
+
+    loop {
+        touch_driver.run().expect("Running Touch driver failed");
+        if touch_driver.is_touched() {
+            let point = touch_driver.get_touch_point();
+            touch_signal.signal(Some(Point::new(point.x, 240-point.y)));
+        } else {
+            touch_signal.signal(None);
+        }
+        Timer::after(Duration::from_millis(1)).await; // 100 a second
+
+        // Your touch handling logic here
+    }
+}
+
+#[main]
+async fn main(spawner: Spawner) {
+    let peripherals = Peripherals::take();
+    let system = SystemControl::new(peripherals.SYSTEM);
+    let mut clocks = ClockControl::boot_defaults(system.clock_control).freeze();
+
+    // Enable the RWDT watchdog timer:
+    let mut rtc = Rtc::new(peripherals.LPWR);
+    rtc.rwdt.set_timeout(2.secs());
+    rtc.rwdt.enable();
+    println!("RWDT watchdog enabled!");
+
+    // Initialize the SYSTIMER peripheral, and then Embassy:
+    let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
+    esp_hal_embassy::init(&clocks, timg0.timer0);
+    println!("Embassy initialized!");
+
+    let io = Io::new(peripherals.GPIO, peripherals.IO_MUX);
+    // let mut led = Output::new(io.pins.gpio5, Level::High);
+    // Initialize SPI
+    let sclk = io.pins.gpio14;
+    let miso = io.pins.gpio12;
+    let mosi = io.pins.gpio13;
+    let cs = io.pins.gpio15;
+    let dc = io.pins.gpio2;
+    let mut backlight = Output::new(io.pins.gpio21, Level::Low);
+
+    // Note: RST is not initialized as it's set to -1 in the instructions
+
+    // up to 80MHz is possible (even tho the display driver isn't supposed to be
+    // that fast) Dataseheet sais 10MHz, so we're gonna go with that
+    let mut spi = Spi::new(peripherals.SPI2, 10.MHz(), SpiMode::Mode0, &mut clocks).with_pins(
+        Some(sclk),
+        Some(mosi),
+        Some(miso),
+        NO_PIN,
+    );
+
+    static DISP_SPI_BUS: StaticCell<NoopMutex<RefCell<Spi<SPI2, FullDuplexMode>>>> =
+        StaticCell::new();
+    let spi_bus = NoopMutex::new(RefCell::new(spi));
+    let spi_bus = DISP_SPI_BUS.init(spi_bus);
+
+    let di = SPIInterface::new(
+        SpiDevice::new(spi_bus, Output::new(cs, Level::Low)),
+        Output::new(dc, Level::Low),
+    );
+    let mut display = Builder::new(ILI9486Rgb565, di)
+        .orientation(Orientation {
+            rotation: Rotation::Deg90,
+            mirrored: true,
+        })
+        .color_order(ColorOrder::Bgr)
+        .invert_colors(ColorInversion::Inverted)
+        .init(&mut embassy_time::Delay)
+        .unwrap();
+
+    {
+        let mut ui = Ui::new_fullscreen(&mut display, medsize_rgb565_style());
+        ui.clear_background().ok();
+    }
+    backlight.set_high();
+
+    // init touchscreen pins
+    let touch_irq = io.pins.gpio36;
+    let touch_mosi = io.pins.gpio32;
+    let touch_miso = io.pins.gpio39;
+    let touch_clk = io.pins.gpio25;
+    let touch_cs = io.pins.gpio33;
+
+    let mut touch_spi = Spi::new(peripherals.SPI3, 10.MHz(), SpiMode::Mode0, &mut clocks)
+        .with_pins(Some(touch_clk), Some(touch_mosi), Some(touch_miso), NO_PIN);
+    static TOUCH_SPI_BUS: StaticCell<NoopMutex<RefCell<Spi<SPI3, FullDuplexMode>>>> =
+        StaticCell::new();
+    let touch_spi_bus = NoopMutex::new(RefCell::new(touch_spi));
+    let touch_spi_bus = TOUCH_SPI_BUS.init(touch_spi_bus);
+
+    let touch_signal = Signal::new();
+    static TOUCH_SIGNAL: StaticCell<Signal<NoopRawMutex, Option<Point>>> = StaticCell::new();
+    let touch_signal = &*TOUCH_SIGNAL.init(touch_signal);
+
+    spawner
+        .spawn(touch_task(
+            touch_irq,
+            touch_spi_bus,
+            touch_cs,
+            touch_signal,
+        ))
+        .unwrap();
+
+    // init RGB LED pins
+
+    let mut red_led = Output::new(io.pins.gpio4, Level::High);
+    let mut green_led = Output::new(io.pins.gpio16, Level::High);
+    let mut blue_led = Output::new(io.pins.gpio17, Level::High);
+
+    // TODO: Spawn some tasks
+    let _ = spawner;
+
+    let mut last_touch = None;
+
+    static BUF_CELL: StaticCell<[Rgb565; 100*100]> = StaticCell::new();
+    let buf = BUF_CELL.init([Rgb565::BLACK; 100 * 100]);
+
+    // Periodically feed the RWDT watchdog timer when our tasks are not running:
+    loop {
+        let mut ui = Ui::new_fullscreen(&mut display, medsize_rgb565_style());
+        ui.set_buffer(buf);
+        if let Some(touch) = touch_signal.try_take() {
+            let interact = match (touch, last_touch) {
+                (Some(point), Some(_)) => Interaction::Drag(point),
+                (Some(point), None) => Interaction::Click(point),
+                (None, Some(point)) => Interaction::Release(point),
+                (None, None) => Interaction::None,
+            };
+            ui.interact(interact);
+            println!("{:?}, {:?}, {:?}", last_touch, touch, interact);
+
+            last_touch = touch;
+        }
+        ui.sub_ui(|ui| {
+            ui.style_mut().default_font = ascii::FONT_9X18_BOLD;
+            ui.add(Label::new("Kolibri Tester"));
+            Ok(())
+        })
+            .ok();
+        ui.add_horizontal(Button::new("Works!"));
+        ui.add(Button::new("And pretty nicely!"));
+        rtc.rwdt.feed();
+        Timer::after(Duration::from_millis(17)).await; // 60 a second
+    }
+}

src/debouncer.rs

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+/// Basic debouncer that checks 16 samples, and only if all of them are on / off, it will return
+/// the value.
+#[derive(Debug)]
+pub struct Debouncer(u16, bool);
+
+impl Debouncer {
+    pub fn new() -> Self {
+        Self(0, false)
+    }
+
+    pub fn read(&self) -> bool {
+        self.1
+    }
+
+    /// Completely fill the debouncer, settng it "true".
+    pub fn fill(&mut self) {
+        self.0 = u16::MAX;
+        self.1 = true;
+    }
+
+    /// Completely empty the debouncer, settng it "false".
+    pub fn empty(&mut self) {
+        self.0 = 0;
+        self.1 = false;
+    }
+
+    pub fn update(&mut self, val: bool) -> bool {
+        self.0 = (self.0 << 1) | (val as u16);
+        if self.0 == u16::MAX {
+            self.1 = true;
+        } else if self.0 == 0 {
+            self.1 = false;
+        }
+
+        self.1
+    }
+}

src/lib.rs

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+#![no_std]
+
+mod debouncer;
+pub use debouncer::Debouncer;