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43fead021c Fast graphs 2025-12-04 13:27:55 +01:00
56f9c423e7 Faster fill 2025-12-02 23:08:29 +01:00
9925499eff Embassy 2025-12-02 20:43:50 +01:00
71c1dc4fd9 Interrupts 2025-12-02 10:09:43 +01:00
ea9852d5bc Nice graphs 2025-11-30 22:11:47 +01:00
3cb8a04a77 sampler start 2025-11-30 16:16:16 +01:00
34 changed files with 2935 additions and 232 deletions

3
.gitmodules vendored Normal file
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@ -0,0 +1,3 @@
[submodule "aht20-driver"]
path = aht20-driver
url = git@github.com:chalbin73/aht20-driver.git

479
Cargo.lock generated
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@ -2,11 +2,20 @@
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name = "windows_x86_64_msvc"
version = "0.53.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
[[package]]
name = "winnow"
version = "0.7.14"
@ -1589,3 +2012,23 @@ dependencies = [
"quote",
"syn 2.0.111",
]
[[package]]
name = "zerocopy"
version = "0.8.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fd74ec98b9250adb3ca554bdde269adf631549f51d8a8f8f0a10b50f1cb298c3"
dependencies = [
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.8.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d8a8d209fdf45cf5138cbb5a506f6b52522a25afccc534d1475dad8e31105c6a"
dependencies = [
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"quote",
"syn 2.0.111",
]

View File

@ -4,12 +4,9 @@ name = "co2-meter"
rust-version = "1.88"
version = "0.1.0"
[[bin]]
name = "co2-meter"
path = "./src/bin/main.rs"
[dependencies]
esp-hal = { version = "1.0.0", features = ["defmt", "esp32c3", "unstable"] }
esp-rtos = {version = "0.2.0", features = ["esp32c3", "embassy"]}
defmt = "1.0.1"
@ -23,14 +20,28 @@ esp-backtrace = { version = "0.18.1", features = [
"panic-handler",
] }
esp-println = { version = "0.16.1", features = ["defmt-espflash", "esp32c3"] }
aht20-driver = { version = "2.0", default-features = false }
aht20-driver = { path = "aht20-driver" , default-features = false }
ens160 = { version = "0.6", default-features = false}
embedded-hal-bus = "0.3.0"
embedded-hal-bus = {version = "0.3.0", features = ["alloc"]}
mipidsi = "0.9.0"
embedded-graphics = "0.8.1"
lcd-async = "0.1.1"
profont = "0.7.0"
buoyant = "0.5.3"
heapless = "0.9.2"
tinybmp = "0.6.0"
libm = "0.2.15"
embassy-executor = {version = "0.9.1", features = ["arch-riscv32"]}
embassy-time = "0.5.0"
embassy-sync = "0.7.2"
embedded-graphics-framebuf = "0.5.0"
static_cell = "2.1.1"
ens160-aq = {version = "0.2.11"}
aht20-async = "1.0.0"
fixed = "1.29.0"
fixed-macro = "1.2.0"
[profile.dev]
@ -44,5 +55,5 @@ debug = 2
debug-assertions = false
incremental = false
lto = 'fat'
opt-level = 's'
opt-level = 3
overflow-checks = false

1
aht20-driver Submodule

Submodule aht20-driver added at 1bb4b02145

18
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all: $(TARGET_BMPS)
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clean:
rm $(TARGET_BMPS)
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%.png: %.svg
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#![no_std]
#![no_main]
#![deny(
clippy::mem_forget,
reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
holding buffers for the duration of a data transfer."
)]
#![allow(unreachable_code)]
mod colors;
mod graph;
mod images;
mod sampler;
mod views;
use buoyant::primitives::Pixel;
use buoyant::primitives::Size;
use buoyant::primitives::geometry::Rectangle;
use buoyant::view::AsDrawable;
use buoyant::view::Image;
use buoyant::view::ViewExt;
use core::cell::RefCell;
use core::default::Default;
use core::iter::Iterator;
use core::ops::Sub;
use critical_section::Mutex;
use defmt::info;
use embedded_graphics::Drawable;
use embedded_graphics::framebuffer::Framebuffer;
use embedded_graphics::framebuffer::buffer_size;
use embedded_graphics::image::GetPixel;
use embedded_graphics::image::ImageRaw;
use embedded_graphics::pixelcolor::raw::LittleEndian;
use embedded_graphics::prelude::Dimensions;
use embedded_graphics::prelude::DrawTarget;
use embedded_graphics::prelude::Point;
use embedded_graphics::prelude::Primitive;
use embedded_graphics::prelude::RgbColor;
use embedded_graphics::primitives::PrimitiveStyle;
use embedded_hal_bus::spi::ExclusiveDevice;
use esp_hal::clock::CpuClock;
use esp_hal::delay::Delay;
use esp_hal::gpio::Input;
use esp_hal::gpio::InputConfig;
use esp_hal::gpio::Io;
use esp_hal::gpio::Level;
use esp_hal::gpio::Output;
use esp_hal::gpio::OutputConfig;
use esp_hal::gpio::Pull;
use esp_hal::handler;
use esp_hal::peripherals;
use esp_hal::time::Rate;
use heapless::format;
use mipidsi::interface::SpiInterface;
use mipidsi::models::ST7789;
use buoyant::view::HStack;
use buoyant::view::Spacer;
use buoyant::view::View;
use core::env;
use embedded_graphics::pixelcolor::Rgb565;
use esp_backtrace as _;
use esp_hal::main;
use esp_println as _;
use crate::colors::BACKGROUND_COLOR;
use crate::graph::graph_data;
use crate::graph::max_indicator;
use crate::graph::min_indicator;
use crate::images::StaticImage;
use crate::sampler::History;
use crate::sampler::Sample;
use crate::sampler::Sampler;
use crate::views::detail;
extern crate alloc;
// This creates a default app-descriptor required by the esp-idf bootloader.
// For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description>
esp_bootloader_esp_idf::esp_app_desc!();
static INPUT_BUTTON: Mutex<RefCell<Option<Input>>> = Mutex::new(RefCell::new(None));
static BUTTON_PRESSED: Mutex<RefCell<bool>> = Mutex::new(RefCell::new(false));
#[main]
fn main() -> ! {
// generator version: 1.0.1
info!("Starting up.");
images::prepare_images();
info!("Prepared images.");
esp_alloc::heap_allocator!(size: 32 * 1024);
let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
let peripherals = esp_hal::init(config);
let mut timer = Delay::new();
let mut io = Io::new(peripherals.IO_MUX);
info!("Init done.");
let spi = esp_hal::spi::master::Spi::new(
peripherals.SPI2,
esp_hal::spi::master::Config::default()
.with_mode(esp_hal::spi::Mode::_0)
.with_frequency(Rate::from_mhz(80)),
)
.unwrap()
.with_sck(peripherals.GPIO4)
.with_mosi(peripherals.GPIO6);
let mut cs_output = Output::new(peripherals.GPIO0, Level::High, OutputConfig::default());
cs_output.set_high();
let spi_device = ExclusiveDevice::new_no_delay(spi, cs_output).unwrap();
let mut buffer = [0_u8; 512];
// Define the display interface with no chip select
let di = SpiInterface::new(
spi_device,
Output::new(peripherals.GPIO1, Level::Low, OutputConfig::default()),
&mut buffer,
);
info!("Display creating, initializing ...");
let mut display = mipidsi::Builder::new(ST7789, di)
.invert_colors(mipidsi::options::ColorInversion::Inverted)
.init(&mut timer)
.unwrap();
info!("Initialized");
let mut fb =
Framebuffer::<Rgb565, _, LittleEndian, 240, 240, { buffer_size::<Rgb565>(240, 240) }>::new(
);
// views::menu::menu_view()
// .as_drawable(Size::new(240, 240), Rgb565::WHITE)
// .draw(&mut fb)
// .unwrap();
// embedded_graphics::image::Image::new(get_image!(images::HUMIDITY_ICON), Point::zero())
// .draw(&mut display)
// .unwrap();
info!("Creating sampler");
let mut sampler = Sampler::new(
peripherals.I2C0,
peripherals.GPIO8,
peripherals.GPIO9,
&mut timer,
);
let _ = sampler.sample(&mut timer);
info!("Sensor initialized");
// Input button interrupt
{
esp_hal::interrupt::enable(
peripherals::Interrupt::GPIO,
esp_hal::interrupt::Priority::Priority1,
)
.unwrap();
let mut input_button = Input::new(
peripherals.GPIO10,
InputConfig::default().with_pull(Pull::Up),
);
io.set_interrupt_handler(interrupt_handler);
critical_section::with(|cs| {
input_button.listen(esp_hal::gpio::Event::FallingEdge);
INPUT_BUTTON.borrow_ref_mut(cs).replace(input_button);
});
}
info!("Setup interrupts");
let mut history = History::new(&mut sampler, &mut timer);
let mut view_state = ViewState::Main;
let mut x = 0;
loop {
// input state
let button_pressed = critical_section::with(|cs| {
let val = *BUTTON_PRESSED.borrow(cs).borrow();
*BUTTON_PRESSED.borrow_ref_mut(cs) = false;
val
});
if button_pressed {
view_state = view_state.circulate();
info!("Btn pressed");
}
if false && (history.update(&mut sampler, &mut timer) || button_pressed) {
// let iter = history.min5.oldest_ordered().map(|x| x.eco2);
// embedded_graphics::primitives::Rectangle::new(Point::zero(), fb.bounding_box().size)
// .into_styled(PrimitiveStyle::with_fill(Rgb565::BLACK))
// .draw(&mut fb)
// .unwrap();
// graph_data(iter.clone(), history.min5.len(), &mut fb);
// min_indicator(iter.clone(), history.min5.len(), &mut fb);
// max_indicator(iter.clone(), history.min5.len(), &mut fb);
//
// let img_raw = ImageRaw::<Rgb565, LittleEndian>::new(fb.data(), 240);
// let image = embedded_graphics::image::Image::new(&img_raw, Point::zero());
// image.draw(&mut display).unwrap();
let app_state = AppState {
sample: *history.min5.last().unwrap(),
history: &history,
tendencies: Tendencies::from_history(&history),
};
display
.bounding_box()
.into_styled(PrimitiveStyle::with_fill(BACKGROUND_COLOR))
.draw(&mut fb)
.unwrap();
view_state.draw_view(&mut fb, app_state);
let img_raw = ImageRaw::<Rgb565, LittleEndian>::new(fb.data(), 240);
let image = embedded_graphics::image::Image::new(&img_raw, Point::zero());
image.draw(&mut display).unwrap();
}
}
// for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.0.0/examples/src/bin
}
#[derive(Clone, Copy)]
pub struct Tendencies {
temperature: Tendency,
humidity: Tendency,
eco2: Tendency,
tvoc: Tendency,
}
impl Tendencies {
pub fn from_history(history: &History) -> Self {
let mut iter = history.min5.oldest_ordered().rev().copied().take(5);
let len = history.min5.len().min(5);
if len <= 1 {
return Tendencies {
temperature: Tendency::Steady,
humidity: Tendency::Steady,
eco2: Tendency::Steady,
tvoc: Tendency::Steady,
};
}
let mut last = iter.next().unwrap();
let mut avg_slope = Sample::zero();
for x in iter {
avg_slope = avg_slope + (last - x);
last = x;
}
avg_slope = avg_slope * (1. / len as f32);
const TEMPERATURE_TENDENCY_TRESHOLD: f32 = 0.3;
const HUMIDITY_TENDENCY_TRESHOLD: f32 = 0.3;
const ECO2_TENDENCY_TRESHOLD: f32 = 50.;
const TVOC_TENDENCY_TRESHOLD: f32 = 50.;
Tendencies {
temperature: if avg_slope.temperature > TEMPERATURE_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.temperature < -TEMPERATURE_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
humidity: if avg_slope.humidity > HUMIDITY_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.humidity < -HUMIDITY_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
eco2: if avg_slope.eco2 > ECO2_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.eco2 < -ECO2_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
tvoc: if avg_slope.tvoc > TVOC_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.tvoc < -TVOC_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
}
}
}
#[derive(Clone, Copy)]
pub struct AppState<'a> {
sample: Sample,
tendencies: Tendencies,
history: &'a History,
}
#[derive(Clone, Copy)]
pub enum ViewState {
Main,
GraphTemperature,
GraphHumidity,
GraphECo2,
GraphTvoc,
}
impl ViewState {
pub fn circulate(&self) -> Self {
match self {
ViewState::Main => ViewState::GraphTemperature,
ViewState::GraphTemperature => ViewState::GraphHumidity,
ViewState::GraphHumidity => ViewState::GraphECo2,
ViewState::GraphECo2 => ViewState::GraphTvoc,
ViewState::GraphTvoc => ViewState::Main,
}
}
pub fn draw_view<T: DrawTarget<Color = Rgb565> + GetPixel<Color = Rgb565>>(
&self,
target: &mut T,
app_state: AppState<'_>,
) {
match self {
ViewState::Main => {
let _ = views::menu::menu_view(app_state)
.as_drawable(Size::new(240, 240), Rgb565::WHITE)
.draw(target);
}
ViewState::GraphTemperature => {
detail::detailed(app_state, MenuIndicatorType::Temperature, target)
}
ViewState::GraphHumidity => {
detail::detailed(app_state, MenuIndicatorType::Humidity, target)
}
ViewState::GraphECo2 => detail::detailed(app_state, MenuIndicatorType::Co2, target),
ViewState::GraphTvoc => detail::detailed(app_state, MenuIndicatorType::Voc, target),
}
}
}
#[derive(Clone, Copy)]
pub enum MenuIndicatorType {
Temperature,
Humidity,
Co2,
Voc,
}
impl MenuIndicatorType {
pub fn get_corresponding_icon(&self) -> &'static StaticImage {
match self {
MenuIndicatorType::Temperature => &images::TEMPERATURE_ICON,
MenuIndicatorType::Humidity => &images::HUMIDITY_ICON,
MenuIndicatorType::Co2 => &images::CO2_ICON,
MenuIndicatorType::Voc => &images::VOC_ICON,
}
}
pub fn get_corresponding_unit_string(&self) -> &'static str {
match self {
MenuIndicatorType::Temperature => "C",
MenuIndicatorType::Humidity => "%",
MenuIndicatorType::Co2 => "ppm",
MenuIndicatorType::Voc => "ppb",
}
}
pub fn get_value_str(&self, app_state: &AppState) -> heapless::String<16> {
match self {
MenuIndicatorType::Temperature => {
format!(16; "{:.1}", app_state.sample.temperature).unwrap()
}
MenuIndicatorType::Humidity => format!(16; "{:.1}", app_state.sample.humidity).unwrap(),
MenuIndicatorType::Co2 => format!(16; "{}", app_state.sample.eco2 as u32).unwrap(),
MenuIndicatorType::Voc => format!(16; "{}", app_state.sample.tvoc as u32).unwrap(),
}
}
pub fn get_tendency(&self, app_state: &AppState) -> Tendency {
match self {
MenuIndicatorType::Temperature => app_state.tendencies.temperature,
MenuIndicatorType::Humidity => app_state.tendencies.humidity,
MenuIndicatorType::Co2 => app_state.tendencies.eco2,
MenuIndicatorType::Voc => app_state.tendencies.tvoc,
}
}
}
#[derive(Clone, Copy)]
pub enum Tendency {
Rising,
Steady,
Falling,
}
impl Tendency {
pub fn get_corresponding_icon(&self) -> &'static StaticImage {
match self {
Self::Rising => &images::TENDENCY_RISING,
Self::Steady => &images::TENDENCY_STEADY,
Self::Falling => &images::TENDENCY_FALLING,
}
}
}
fn tendency_indicator(tendency: Tendency) -> impl View<Rgb565> {
HStack::new((
Image::new(get_image!(tendency.get_corresponding_icon()))
.flex_frame()
.with_min_size(10, 20)
.with_max_size(10, 20),
Spacer::default(),
))
.flex_frame()
.with_max_width(15)
}
#[handler]
fn interrupt_handler() {
critical_section::with(|cs| {
let mut button = INPUT_BUTTON.borrow_ref_mut(cs);
let Some(button) = button.as_mut() else {
return;
};
*BUTTON_PRESSED.borrow_ref_mut(cs) = true;
button.clear_interrupt();
});
}

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@ -1,205 +0,0 @@
#![no_std]
#![no_main]
#![deny(
clippy::mem_forget,
reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
holding buffers for the duration of a data transfer."
)]
#![allow(unreachable_code)]
use defmt::info;
use embedded_graphics::Drawable;
use embedded_graphics::framebuffer::{Framebuffer, buffer_size};
use embedded_graphics::image::{Image, ImageRaw};
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::pixelcolor::raw::{BigEndian, LittleEndian};
use embedded_graphics::prelude::{Angle, DrawTarget, Point, Primitive, RgbColor, WebColors};
use embedded_graphics::primitives::{
Circle, PrimitiveStyle, PrimitiveStyleBuilder, Sector, StyledDrawable, Triangle,
};
use embedded_graphics::text::renderer::TextRenderer;
use embedded_hal_bus::spi::ExclusiveDevice;
use esp_hal::clock::CpuClock;
use esp_hal::delay::Delay;
use esp_hal::gpio::{Level, Output, OutputConfig};
use esp_hal::main;
use esp_hal::riscv::asm::delay;
use esp_hal::rtc_cntl::Rtc;
use esp_hal::time::{Duration, Instant, Rate};
use esp_hal::timer::Timer;
use esp_hal::timer::timg::TimerGroup;
use mipidsi::interface::{Interface, SpiInterface};
use mipidsi::models::ST7789;
use {esp_backtrace as _, esp_println as _};
extern crate alloc;
// This creates a default app-descriptor required by the esp-idf bootloader.
// For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description>
esp_bootloader_esp_idf::esp_app_desc!();
#[main]
fn main() -> ! {
// generator version: 1.0.1
esp_alloc::heap_allocator!(size: 32 * 1024);
let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
let peripherals = esp_hal::init(config);
let mut timer = Delay::new();
let spi = esp_hal::spi::master::Spi::new(
peripherals.SPI2,
esp_hal::spi::master::Config::default()
.with_mode(esp_hal::spi::Mode::_0)
.with_frequency(Rate::from_mhz(80)),
)
.unwrap()
.with_sck(peripherals.GPIO4)
.with_mosi(peripherals.GPIO6);
let mut cs_output = Output::new(peripherals.GPIO1, Level::High, OutputConfig::default());
cs_output.set_high();
let spi_device = ExclusiveDevice::new_no_delay(spi, cs_output).unwrap();
let _ = Output::new(peripherals.GPIO0, Level::High, OutputConfig::default());
let mut buffer = [0_u8; 512];
// Define the display interface with no chip select
let di = SpiInterface::new(
spi_device,
Output::new(peripherals.GPIO2, Level::Low, OutputConfig::default()),
&mut buffer,
);
let mut display = mipidsi::Builder::new(ST7789, di)
.reset_pin(Output::new(
peripherals.GPIO3,
Level::Low,
OutputConfig::default(),
))
.invert_colors(mipidsi::options::ColorInversion::Inverted)
.init(&mut timer)
.unwrap();
display
.set_tearing_effect(mipidsi::options::TearingEffect::Vertical)
.unwrap();
// Create styles used by the drawing operations.
let sector_style = PrimitiveStyleBuilder::new()
.stroke_color(Rgb565::BLACK)
.stroke_width(2)
.fill_color(Rgb565::YELLOW)
.build();
let eye_style = PrimitiveStyleBuilder::new()
.stroke_color(Rgb565::BLACK)
.stroke_width(1)
.fill_color(Rgb565::BLACK)
.build();
//let output_settings = ::new().scale(4).build();
//let mut window = Window::new("Pacman", &output_settings);
// The current progress of the animation
const STEPS: i32 = 10;
let mut progress: i32 = 0;
let delay = Delay::new();
loop {
let mut fb = Framebuffer::<
Rgb565,
_,
LittleEndian,
320,
240,
{ buffer_size::<Rgb565>(320, 240) },
>::new();
fb.clear(Rgb565::WHITE).unwrap();
let p = (progress - STEPS).abs();
// Draw a Sector as the main Pacman feature.
let _ = Sector::new(
Point::new(2, 2),
61,
Angle::from_degrees((p * 30 / STEPS) as f32),
Angle::from_degrees((360 - 2 * p * 30 / STEPS) as f32),
)
.draw_styled(&sector_style, &mut fb);
// Draw a Circle as the eye.
let _ = Circle::new(Point::new(36, 16), 5).draw_styled(&eye_style, &mut fb);
delay.delay_millis(50);
progress = (progress + 1) % (2 * STEPS + 1);
let img_raw = ImageRaw::<Rgb565, LittleEndian>::new(fb.data(), 320);
let image = Image::new(&img_raw, Point::zero());
image.draw(&mut display).unwrap();
}
// display
// .set_pixels(0, 0, 50, 50, core::iter::repeat(Rgb565::BLUE))
// .unwrap();
// //display.set_pixel(10, 10, Rgb565::WHITE).unwrap();
// let i2c = I2c::new(peripherals.I2C0, Config::default())
// .unwrap()
// .with_sda(peripherals.GPIO8)
// .with_scl(peripherals.GPIO9);
//
// esp_alloc::heap_allocator!(#[esp_hal::ram(reclaimed)] size: 66320);
//
// let rc = RefCell::new(i2c);
//
// let mut device = Ens160::new(embedded_hal_bus::i2c::RefCellDevice::new(&rc), 0x53);
// timer.delay_millis(500);
// device.reset().unwrap();
// info!("Reset device");
// timer.delay_millis(500);
// device.operational().unwrap();
// info!("Device operational");
//
// // Configure the AHT20 temperature and humidity sensor.
// let mut aht20_uninit = aht20_driver::AHT20::new(
// embedded_hal_bus::i2c::RefCellDevice::new(&rc),
// aht20_driver::SENSOR_ADDRESS,
// );
// let mut aht20 = aht20_uninit.init(&mut timer).unwrap();
//
// // Take the temperature and humidity measurement.
//
// loop {
// //timer.delay_millis(5000);
// if let Ok(status) = device.status() {
// if status.data_is_ready() {
// let aht20_measurement = aht20.measure(&mut timer).unwrap();
// //println!("temperature (aht20): {}C", aht20_measurement.temperature);
// //println!("humidity (aht20): {}%", aht20_measurement.humidity);
//
// let tvoc = device.tvoc().unwrap();
// let eco2 = device.eco2().unwrap();
// //info!("eco2: {}, tvoc: {}", *eco2, tvoc);
// print!(
// "{}, {}, {}, {}\n",
// *eco2, tvoc, aht20_measurement.temperature, aht20_measurement.humidity
// );
// // from eCO2
// // directly
// //let air_quality_index = device.air_quality_index().unwrap();
// }
// }
// }
//
//
loop {
info!("Hello world!");
let delay_start = Instant::now();
while delay_start.elapsed() < Duration::from_millis(500) {}
}
// for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.0.0/examples/src/bin
}
fn draw_interface<T: DrawTarget>(target: &mut T) {}

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use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::prelude::RgbColor;
use embedded_graphics::prelude::WebColors;
pub const BACKGROUND_COLOR: Rgb565 = Rgb565::BLACK;
//pub const FRAME_BACKGROUD_COLOR: Rgb565 = Rgb565::new(1, 2, 1);
pub const FRAME_BACKGROUD_COLOR: Rgb565 = Rgb565::new(0, 0, 0);
pub const FRAME_STROKE_COLOR: Rgb565 = Rgb565::new(4, 9, 4);
pub const MAIN_TEXT_COLOR: Rgb565 = Rgb565::WHITE;
pub const SUB_TEXT_COLOR: Rgb565 = Rgb565::CSS_DARK_GRAY;
pub const FRAME_STROKE: u32 = 1;

64
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use defmt::info;
use embedded_hal_bus::spi::ExclusiveDevice;
use embedded_hal_bus::spi::NoDelay;
use esp_hal::Blocking;
use esp_hal::delay::Delay;
use esp_hal::gpio::Level;
use esp_hal::gpio::Output;
use esp_hal::gpio::OutputConfig;
use esp_hal::gpio::OutputPin;
use esp_hal::spi::master::Instance;
use esp_hal::spi::master::Spi;
use esp_hal::time::Rate;
use mipidsi::Display;
use mipidsi::NoResetPin;
use mipidsi::interface::SpiInterface;
use mipidsi::models::ST7789;
use static_cell::StaticCell;
pub type MainDisplay<'a> = Display<
SpiInterface<'a, ExclusiveDevice<Spi<'a, Blocking>, Output<'a>, NoDelay>, Output<'a>>,
ST7789,
NoResetPin,
>;
static SPI_BUFFER: StaticCell<[u8; 1024]> = StaticCell::new();
pub fn setup_display<'a>(
spi: impl Instance + 'static,
sck: impl OutputPin + 'static,
mosi: impl OutputPin + 'static,
cs: impl OutputPin + 'static,
dc: impl OutputPin + 'static,
timer: &mut Delay,
) -> MainDisplay<'a> {
let spi = esp_hal::spi::master::Spi::new(
spi,
esp_hal::spi::master::Config::default()
.with_mode(esp_hal::spi::Mode::_0)
.with_frequency(Rate::from_mhz(80)),
)
.unwrap()
.with_sck(sck)
.with_mosi(mosi);
let mut cs_output = Output::new(cs, Level::High, OutputConfig::default());
cs_output.set_high();
let spi_device = ExclusiveDevice::new_no_delay(spi, cs_output).unwrap();
// Define the display interface with no chip select
let spi_buffer = SPI_BUFFER.init([0u8; 1024]);
let di = SpiInterface::new(
spi_device,
Output::new(dc, Level::Low, OutputConfig::default()),
spi_buffer,
);
info!("Display creating, initializing ...");
let display = mipidsi::Builder::new(ST7789, di)
.invert_colors(mipidsi::options::ColorInversion::Inverted)
.init(timer)
.unwrap();
info!("Initialized");
display
}

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use embedded_graphics::Pixel;
use embedded_graphics::image::GetPixel;
use embedded_graphics::mono_font::MonoTextStyle;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::prelude::DrawTarget;
use embedded_graphics::prelude::Drawable;
use embedded_graphics::prelude::Point;
use embedded_graphics::prelude::Primitive;
use embedded_graphics::prelude::RgbColor;
use embedded_graphics::prelude::Size;
use embedded_graphics::prelude::WebColors;
use embedded_graphics::primitives::Line;
use embedded_graphics::primitives::PrimitiveStyle;
use embedded_graphics::primitives::line::StyledPixelsIterator;
use embedded_graphics::text::Text;
use fixed::traits::Fixed;
use fixed::types::I16F16;
use fixed_macro::fixed;
use heapless::format;
use profont::PROFONT_10_POINT;
use crate::colors::BACKGROUND_COLOR;
pub type FixedType = I16F16;
fn map_float(
x: FixedType,
x_min: FixedType,
x_max: FixedType,
y_min: FixedType,
y_max: FixedType,
) -> FixedType {
((x - x_min) / (x_max - x_min)) * (y_max - y_min) + y_min
}
pub const TEMPERATURE_LUT: [Rgb565; 5] = [
Rgb565::new(0, 16, 11),
Rgb565::new(11, 20, 17),
Rgb565::new(23, 20, 18),
Rgb565::new(31, 24, 12),
Rgb565::new(31, 41, 0),
];
pub const HUMIDITY_LUT: [Rgb565; 2] = [Rgb565::CSS_DIM_GRAY, Rgb565::new(0, 14, 29)];
pub const ECO2_LUT: [Rgb565; 3] = [Rgb565::GREEN, Rgb565::CSS_ORANGE, Rgb565::RED];
pub const TVOC_LUT: [Rgb565; 3] = [Rgb565::GREEN, Rgb565::CSS_ORANGE, Rgb565::RED];
#[derive(Clone, Copy)]
pub enum Lut {
HeightLut(&'static [Rgb565]),
MapLut(&'static [Rgb565], FixedType, FixedType),
}
impl Lut {
pub fn get_color(&self, height_factor: FixedType, value: FixedType) -> Rgb565 {
match self {
Lut::HeightLut(lut) => color_lut(height_factor, lut),
Lut::MapLut(lut, min, max) => color_lut(
map_float(
value.clamp(*min, *max),
*min,
*max,
FixedType::ZERO,
FixedType::ONE,
),
lut,
),
}
}
}
fn rgb565_interpolate(a: Rgb565, b: Rgb565, x: FixedType) -> Rgb565 {
Rgb565::new(
(FixedType::from_num(a.r()) * (FixedType::from_num(1) - x)).to_num::<u8>()
+ (FixedType::from_num(b.r()) * x).to_num::<u8>(),
(FixedType::from_num(a.g()) * (FixedType::from_num(1) - x)).to_num::<u8>()
+ (FixedType::from_num(b.g()) * x).to_num::<u8>(),
(FixedType::from_num(a.b()) * (FixedType::from_num(1) - x)).to_num::<u8>()
+ (FixedType::from_num(b.b()) * x).to_num::<u8>(),
)
}
fn color_lut(mut x: FixedType, colors: &[Rgb565]) -> Rgb565 {
if x == FixedType::from_num(1.) {
return colors[colors.len() - 1];
}
if x == FixedType::from_num(0.) {
return colors[0];
}
x *= FixedType::from_num(colors.len() - 1);
let index = x.floor();
let interp = x - index;
rgb565_interpolate(
colors[index.to_num::<usize>()],
colors[index.to_num::<usize>() + 1],
interp.to_num(),
)
}
pub fn graph_data<I, T>(
data: I,
min: FixedType,
max: FixedType,
lut: Lut,
data_count: usize,
target: &mut T,
) where
I: Iterator<Item = FixedType> + Clone,
T: DrawTarget<Color = Rgb565> + GetPixel<Color = Rgb565>,
{
let size = Size::new(
target.bounding_box().size.width,
target.bounding_box().size.height,
);
// Draw data as WHITE line
let mut start = Point::new(
0,
map_float(
data.clone().next().unwrap(),
FixedType::from_num(min),
FixedType::from_num(max),
FixedType::from_num(size.height as f32),
FixedType::from_num(0.),
)
.to_num::<i32>(),
);
for (i, x) in data.enumerate().skip(1) {
let point = Point::new(
map_float(
FixedType::from_num(i),
FixedType::from_num(0),
FixedType::from_num(data_count - 1),
FixedType::from_num(0),
FixedType::from_num(size.width),
)
.to_num::<i32>(),
map_float(
x,
min,
max,
FixedType::from_num(size.height),
FixedType::from_num(0),
)
.to_num::<i32>(),
);
let _ = Line::new(start, point)
.into_styled(PrimitiveStyle::with_stroke(Rgb565::WHITE, 2))
.draw(target);
start = point;
}
for x in 0..size.width {
// Start coloring from up to bottom
let mut met_curve = false;
for y in 0..size.height {
let position = Point::new(x as i32, y as i32);
let pixel = target.pixel(position).unwrap();
let height_factor = map_float(
FixedType::from_num(y),
FixedType::from_num(0),
FixedType::from_num(size.height),
FixedType::from_num(1),
FixedType::from_num(0.),
);
//let height_color = color_lut(height_factor, &DEFAULT_LUT);
let height_color = lut.get_color(
height_factor,
map_float(
FixedType::from_num(y),
FixedType::from_num(size.height),
FixedType::from_num(0),
min,
max,
),
);
if pixel == Rgb565::WHITE {
let _ = Pixel(position, height_color).draw(target);
met_curve = true;
} else if met_curve && (x as i32 - 2 * y as i32) % 7 == 0 {
let _ = Pixel(
position,
rgb565_interpolate(
height_color,
Rgb565::BLACK,
FixedType::from_num(1) - FixedType::from_num(height_factor),
),
)
.draw(target);
}
}
}
}
// pub fn min_indicator<
// I: Iterator<Item = f32> + Clone,
// T: DrawTarget<Color = Rgb565> + GetPixel<Color = Rgb565>,
// >(
// data: I,
// data_count: usize,
// target: &mut T,
// ) {
// let size = target.bounding_box().size;
// let (min_index, min) = data
// .clone()
// .enumerate()
// .reduce(|a, b| if a.1 < b.1 { a } else { b })
// .unwrap_or((0, 0.));
//
// let min_x = map_float(
// min_index as f32,
// 0.,
// data_count as f32,
// 0.,
// size.width as f32,
// ) as i32;
//
// // let _ = Line::new(Point::new(min_x, 0), Point::new(min_x, size.height as i32))
// // .into_styled(PrimitiveStyle::with_stroke(Rgb565::RED, 1))
// // .draw(target);
// for y in 0..size.height {
// if (y / 2) % 2 == 0 {
// let position = Point::new(min_x, y as i32);
// let _ = Pixel(
// position,
// rgb565_interpolate(Rgb565::RED, Rgb565::BLACK, 0.6),
// )
// .draw(target);
//
// // let position = Point::new(min_x + 1, y as i32);
// // let _ = Pixel(
// // position,
// // rgb565_interpolate(Rgb565::RED, Rgb565::BLACK, 0.6),
// // )
// // .draw(target);
// }
// }
//
// let minimum_text = "Minimum";
// let font = &PROFONT_10_POINT;
//
// let text_start = if min_x < (size.width / 2) as i32 {
// 5
// } else {
// -((minimum_text.len() + 1) as i32 * font.character_size.width as i32 + 3)
// };
//
// let style = MonoTextStyle::new(
// &PROFONT_10_POINT,
// rgb565_interpolate(Rgb565::WHITE, Rgb565::BLACK, 0.8),
// );
// let _ = Text::new(
// minimum_text,
// Point::new(min_x + text_start as i32, 10),
// style,
// )
// .draw(target);
//
// let value = format!(16; "{:.1}", min).unwrap();
// let _ = Text::new(
// value.as_str(),
// Point::new(
// min_x + text_start as i32,
// 10 + font.character_size.height as i32,
// ),
// style,
// )
// .draw(target);
// }
//
// pub fn max_indicator<
// T: DrawTarget<Color = Rgb565> + GetPixel<Color = Rgb565>,
// I: Iterator<Item = f32> + Clone,
// >(
// data: I,
// data_count: usize,
// target: &mut T,
// ) {
// let size = target.bounding_box().size;
// let (max_index, max) = data
// .clone()
// .enumerate()
// .reduce(|a, b| if a.1 > b.1 { a } else { b })
// .unwrap_or((0, 0.));
//
// let max_x = map_float(
// max_index as f32,
// 0.,
// data_count as f32,
// 0.,
// size.width as f32,
// ) as i32;
//
// for y in 0..size.height {
// if (y / 2) % 2 == 0 {
// let position = Point::new(max_x, y as i32);
// let _ = Pixel(
// position,
// rgb565_interpolate(Rgb565::GREEN, Rgb565::BLACK, 0.6),
// )
// .draw(target);
//
// // let position = Point::new(max_x + 1, y as i32);
// // let _ = Pixel(
// // position,
// // rgb565_interpolate(Rgb565::GREEN, Rgb565::BLACK, 0.6),
// // )
// // .draw(target);
// }
// }
//
// let maximum_text = "Maximum";
// let font = &PROFONT_10_POINT;
//
// let text_start = if max_x < (size.width / 2) as i32 {
// 5
// } else {
// -((maximum_text.len() + 1) as i32 * font.character_size.width as i32 + 3)
// };
//
// let style = MonoTextStyle::new(
// &PROFONT_10_POINT,
// rgb565_interpolate(Rgb565::WHITE, Rgb565::BLACK, 0.8),
// );
// let _ = Text::new(
// maximum_text,
// Point::new(
// max_x + text_start as i32,
// size.height as i32 - font.character_size.height as i32 * 2,
// ),
// style,
// )
// .draw(target);
//
// let value = format!(16; "{:.1}", max).unwrap();
// let _ = Text::new(
// value.as_str(),
// Point::new(
// max_x + text_start as i32,
// size.height as i32 - font.character_size.height as i32,
// ),
// style,
// )
// .draw(target);
// }

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use core::cell::UnsafeCell;
use core::include_bytes;
use core::mem::MaybeUninit;
use critical_section::Mutex;
use embedded_graphics::pixelcolor::Rgb565;
use tinybmp::Bmp;
pub type StaticImage = Mutex<UnsafeCell<MaybeUninit<Bmp<'static, Rgb565>>>>;
#[rustfmt::skip]
pub static HUMIDITY_ICON: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
pub static TEMPERATURE_ICON: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
pub static VOC_ICON: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
pub static CO2_ICON: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
// Tendency indicators
pub static TENDENCY_RISING: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
pub static TENDENCY_STEADY: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
pub static TENDENCY_FALLING: StaticImage = Mutex::new(UnsafeCell::new(MaybeUninit::zeroed()));
macro_rules! load_image {
($stat:expr, $path:expr) => {
critical_section::with(|cs| {
*$stat.borrow(cs).get() =
MaybeUninit::new(Bmp::from_slice(include_bytes!($path)).unwrap());
})
};
}
#[macro_export]
macro_rules! get_image {
($image:expr) => {
unsafe {
use core::mem::MaybeUninit;
use tinybmp::Bmp;
&*core::mem::transmute::<*mut MaybeUninit<Bmp<Rgb565>>, *mut Bmp<Rgb565>>(
critical_section::with(|cs| $image.borrow(cs).get()),
)
}
};
}
pub fn prepare_images() {
unsafe {
load_image!(HUMIDITY_ICON, "../assets/humidity-icon.bmp");
load_image!(TEMPERATURE_ICON, "../assets/temperature-icon.bmp");
load_image!(VOC_ICON, "../assets/voc-icon.bmp");
load_image!(CO2_ICON, "../assets/co2-icon.bmp");
load_image!(TENDENCY_RISING, "../assets/indic-rising.bmp");
load_image!(TENDENCY_STEADY, "../assets/indic-steady.bmp");
load_image!(TENDENCY_FALLING, "../assets/indic-falling.bmp");
}
}

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#![no_std]

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#![no_std]
#![no_main]
#![deny(
clippy::mem_forget,
reason = "mem::forget is generally not safe to do with esp_hal types, especially those \
holding buffers for the duration of a data transfer."
)]
use core::cell::RefCell;
use core::hint;
use core::ops::Add;
use buoyant::primitives::ProposedDimension;
use buoyant::view::AsDrawable;
use critical_section::Mutex;
use defmt::info;
use defmt::trace;
use embassy_executor::Spawner;
use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
use embassy_sync::channel::Channel;
use embassy_time::Duration;
use embassy_time::Timer;
use embassy_time::with_timeout;
use embedded_graphics::Drawable;
use embedded_graphics::draw_target::DrawTarget;
use embedded_graphics::framebuffer::Framebuffer;
use embedded_graphics::framebuffer::buffer_size;
use embedded_graphics::geometry::Dimensions;
use embedded_graphics::image::GetPixel;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::pixelcolor::raw::LittleEndian;
use embedded_graphics::prelude::PixelColor;
use embedded_graphics::prelude::Primitive;
use embedded_graphics::prelude::RgbColor;
use embedded_graphics::primitives::PrimitiveStyle;
use embedded_graphics_framebuf::FrameBuf;
use embedded_graphics_framebuf::backends::FrameBufferBackend;
use esp_hal::clock::CpuClock;
use esp_hal::gpio::Input;
use esp_hal::gpio::InputConfig;
use esp_hal::gpio::Pull;
use esp_hal::interrupt::software::SoftwareInterruptControl;
use esp_hal::timer::timg::TimerGroup;
use esp_rtos::main;
extern crate alloc;
extern crate esp_alloc;
mod colors;
mod display;
mod graph;
mod images;
mod sampler;
mod views;
esp_bootloader_esp_idf::esp_app_desc!();
use esp_backtrace as _;
use esp_println as _;
use heapless::HistoryBuf;
use heapless::format;
use static_cell::StaticCell;
use crate::display::MainDisplay;
use crate::images::StaticImage;
use crate::sampler::History;
use crate::sampler::Sample;
use crate::sampler::Sampler;
pub enum ApplicationEvent {
ButtonPress,
LongButtonPress,
NewSample(Sample),
}
static EVENT_CHANNEL: Channel<CriticalSectionRawMutex, ApplicationEvent, 8> = Channel::new();
static MAIN_DISPLAY: Mutex<RefCell<Option<MainDisplay>>> = Mutex::new(RefCell::new(None));
static SAMPLER: StaticCell<Sampler> = StaticCell::new();
#[main]
async fn main(spawner: Spawner) {
esp_alloc::heap_allocator!(size: 32 * 1024);
// generator version: 1.0.1
info!("Starting up.");
images::prepare_images();
info!("Prepared images.");
let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
let peripherals = esp_hal::init(config);
let timg0 = TimerGroup::new(peripherals.TIMG0);
let software_interrupt = SoftwareInterruptControl::new(peripherals.SW_INTERRUPT);
esp_rtos::start(timg0.timer0, software_interrupt.software_interrupt0);
info!("Init done.");
info!("Setting up display");
let mut timer = esp_hal::delay::Delay::new();
let mut display = display::setup_display(
peripherals.SPI2,
peripherals.GPIO4,
peripherals.GPIO6,
peripherals.GPIO0,
peripherals.GPIO1,
&mut timer,
);
info!("Clearing screen");
{
let fbuf_data = [Rgb565::new(0, 0, 0); 240 * 240];
let _ = display.fill_contiguous(&display.bounding_box(), fbuf_data);
}
critical_section::with(|cs| {
MAIN_DISPLAY.borrow_ref_mut(cs).replace(display);
});
// Setup button
let btn = Input::new(
peripherals.GPIO10,
InputConfig::default().with_pull(Pull::Down),
);
// Setup sampler
let sampler = SAMPLER.init(Sampler::new(
peripherals.I2C0,
peripherals.GPIO8,
peripherals.GPIO9,
&mut timer,
));
sampler.sample(&mut timer);
Timer::after_secs(2).await;
sampler.sample(&mut timer);
spawner.spawn(button_listener(btn)).unwrap();
spawner.spawn(event_handler()).unwrap();
spawner.spawn(sampler_task(sampler)).unwrap();
}
#[embassy_executor::task]
async fn button_listener(mut btn: Input<'static>) {
info!("Button listner task launched");
let sender = EVENT_CHANNEL.sender();
loop {
btn.wait_for_rising_edge().await;
match with_timeout(Duration::from_millis(750), btn.wait_for_low()).await {
Ok(()) => {
info!("Short press");
sender.send(ApplicationEvent::ButtonPress).await
}
Err(_) => {
info!("Long press");
sender.send(ApplicationEvent::LongButtonPress).await;
btn.wait_for_low().await
}
};
Timer::after_millis(20).await;
}
}
#[embassy_executor::task]
async fn event_handler() {
info!("Event handler task launched");
let receiver = EVENT_CHANNEL.receiver();
let mut display = critical_section::with(|cs| MAIN_DISPLAY.borrow_ref_mut(cs).take().unwrap());
let mut fbuf =
Framebuffer::<Rgb565, _, LittleEndian, 240, 240, { buffer_size::<Rgb565>(240, 240) }>::new(
);
let mut last_5_mins: HistoryBuf<Sample, { 60 * 5 }> = HistoryBuf::new();
let mut redraw = true;
let mut current_view = ViewState::Main;
loop {
if redraw {
redraw = false;
let mut draw_graph = None;
let tendencies = Tendencies::from_history(&last_5_mins);
let _ = fbuf
.bounding_box()
.into_styled(PrimitiveStyle::with_fill(Rgb565::BLACK))
.draw(&mut fbuf);
match current_view {
ViewState::Main => {
let _ = views::menu::menu_view(
*last_5_mins.last().unwrap_or(&Sample::zero()),
tendencies,
)
.as_drawable(fbuf.bounding_box().size, Rgb565::WHITE)
.draw(&mut fbuf);
}
ViewState::TemperatureGraph => draw_graph = Some(MeasurementType::Temperature),
ViewState::HumidityGraph => draw_graph = Some(MeasurementType::Humidity),
ViewState::ECo2Graph => draw_graph = Some(MeasurementType::ECo2),
ViewState::TVocGraph => draw_graph = Some(MeasurementType::TVoc),
}
if let Some(graph_type) = draw_graph {
views::detail::detailed(&last_5_mins, tendencies, graph_type, &mut fbuf);
}
let _ = display.fill_contiguous(
&fbuf.bounding_box(),
fbuf.data()
.chunks(2)
.map(|x| unsafe { core::mem::transmute::<_, Rgb565>([x[0], x[1]]) }),
);
}
let event = receiver.receive().await;
match event {
ApplicationEvent::ButtonPress => {
current_view = current_view.next();
redraw = true;
}
ApplicationEvent::NewSample(x) => {
last_5_mins.write(x);
redraw = true;
}
ApplicationEvent::LongButtonPress => {
redraw = true;
}
}
}
}
#[derive(Clone, Copy)]
pub enum ViewState {
Main,
TemperatureGraph,
HumidityGraph,
ECo2Graph,
TVocGraph,
}
impl ViewState {
pub fn next(&self) -> Self {
match self {
ViewState::Main => ViewState::TemperatureGraph,
ViewState::TemperatureGraph => ViewState::HumidityGraph,
ViewState::HumidityGraph => ViewState::ECo2Graph,
ViewState::ECo2Graph => ViewState::TVocGraph,
ViewState::TVocGraph => ViewState::Main,
}
}
}
const LOW_PASS_LENGTH: usize = 5;
#[embassy_executor::task]
async fn sampler_task(sampler: &'static mut Sampler<'static>) {
info!("Sampler task launched");
let sender = EVENT_CHANNEL.sender();
sender
.send(ApplicationEvent::NewSample(Sample::zero()))
.await;
let mut low_pass: HistoryBuf<Sample, LOW_PASS_LENGTH> = HistoryBuf::new();
let mut delay = esp_hal::delay::Delay::new();
let mut count = 0;
loop {
Timer::after(Duration::from_millis(500)).await;
let sample = sampler.sample(&mut delay);
low_pass.write(sample);
count += 1;
if count >= 2 {
sender
.send(ApplicationEvent::NewSample(
low_pass
.oldest_ordered()
.copied()
.reduce(Sample::add)
.unwrap_or(Sample::zero())
* (1. / LOW_PASS_LENGTH as f32),
))
.await;
count = 0;
}
}
}
#[derive(Clone, Copy)]
pub struct Tendencies {
temperature: Tendency,
humidity: Tendency,
eco2: Tendency,
tvoc: Tendency,
}
impl Tendencies {
pub fn from_history<const N: usize>(history: &HistoryBuf<Sample, N>) -> Self {
let mut iter = history.oldest_ordered().rev().copied().take(5);
let len = history.len().min(5);
if len <= 1 {
return Tendencies {
temperature: Tendency::Steady,
humidity: Tendency::Steady,
eco2: Tendency::Steady,
tvoc: Tendency::Steady,
};
}
let mut last = iter.next().unwrap();
let mut avg_slope = Sample::zero();
for x in iter {
avg_slope = avg_slope + (last - x);
last = x;
}
avg_slope = avg_slope * (1. / len as f32);
const TEMPERATURE_TENDENCY_TRESHOLD: f32 = 0.3;
const HUMIDITY_TENDENCY_TRESHOLD: f32 = 0.3;
const ECO2_TENDENCY_TRESHOLD: f32 = 50.;
const TVOC_TENDENCY_TRESHOLD: f32 = 50.;
Tendencies {
temperature: if avg_slope.temperature > TEMPERATURE_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.temperature < -TEMPERATURE_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
humidity: if avg_slope.humidity > HUMIDITY_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.humidity < -HUMIDITY_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
eco2: if avg_slope.eco2 > ECO2_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.eco2 < -ECO2_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
tvoc: if avg_slope.tvoc > TVOC_TENDENCY_TRESHOLD {
Tendency::Rising
} else if avg_slope.tvoc < -TVOC_TENDENCY_TRESHOLD {
Tendency::Falling
} else {
Tendency::Steady
},
}
}
}
#[derive(Clone, Copy)]
pub enum Tendency {
Rising,
Steady,
Falling,
}
impl Tendency {
pub fn get_corresponding_icon(&self) -> &'static StaticImage {
match self {
Self::Rising => &images::TENDENCY_RISING,
Self::Steady => &images::TENDENCY_STEADY,
Self::Falling => &images::TENDENCY_FALLING,
}
}
}
#[derive(Clone, Copy)]
pub enum MeasurementType {
Temperature,
Humidity,
ECo2,
TVoc,
}
impl MeasurementType {
pub fn get_corresponding_icon(&self) -> &'static StaticImage {
match self {
MeasurementType::Temperature => &images::TEMPERATURE_ICON,
MeasurementType::Humidity => &images::HUMIDITY_ICON,
MeasurementType::ECo2 => &images::CO2_ICON,
MeasurementType::TVoc => &images::VOC_ICON,
}
}
pub fn get_corresponding_unit_string(&self) -> &'static str {
match self {
MeasurementType::Temperature => "C",
MeasurementType::Humidity => "%",
MeasurementType::ECo2 => "ppm",
MeasurementType::TVoc => "ppb",
}
}
pub fn get_value_str(&self, sample: Sample) -> heapless::String<16> {
match self {
MeasurementType::Temperature => format!(16; "{:.1}", sample.temperature).unwrap(),
MeasurementType::Humidity => format!(16; "{:.1}", sample.humidity).unwrap(),
MeasurementType::ECo2 => format!(16; "{}", sample.eco2 as u32).unwrap(),
MeasurementType::TVoc => format!(16; "{}", sample.tvoc as u32).unwrap(),
}
}
pub fn get_tendency(&self, tendencies: Tendencies) -> Tendency {
match self {
MeasurementType::Temperature => tendencies.temperature,
MeasurementType::Humidity => tendencies.humidity,
MeasurementType::ECo2 => tendencies.eco2,
MeasurementType::TVoc => tendencies.tvoc,
}
}
}

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use core::cell::RefCell;
use core::ops::Add;
use core::ops::Mul;
use core::ops::Sub;
use aht20_driver::AHT20;
use alloc::rc::Rc;
use core::default::Default;
use embedded_hal_bus::i2c::RcDevice;
//use ens160_aq::Ens160;
use ens160::Ens160;
use esp_hal::Blocking;
use esp_hal::delay::Delay;
use esp_hal::gpio::interconnect::PeripheralOutput;
use esp_hal::i2c::master::I2c;
use esp_hal::i2c::master::Instance;
use esp_hal::time::Duration;
use esp_hal::time::Instant;
use heapless::HistoryBuf;
pub struct Sampler<'a> {
ens160: Ens160<RcDevice<I2c<'a, Blocking>>>,
aht20: aht20_driver::AHT20Initialized<RcDevice<I2c<'a, Blocking>>>,
}
#[derive(Clone, Copy, Debug)]
pub struct Sample {
pub temperature: f32,
pub humidity: f32,
pub eco2: f32,
pub tvoc: f32,
}
impl Sample {
pub fn zero() -> Self {
Sample {
temperature: 0.,
humidity: 0.,
eco2: 0.,
tvoc: 0.,
}
}
}
impl Add<Sample> for Sample {
type Output = Sample;
fn add(self, rhs: Sample) -> Self::Output {
Sample {
temperature: self.temperature + rhs.temperature,
humidity: self.humidity + rhs.humidity,
eco2: self.eco2 + rhs.eco2,
tvoc: self.tvoc + rhs.tvoc,
}
}
}
impl Sub<Sample> for Sample {
type Output = Sample;
fn sub(self, rhs: Sample) -> Self::Output {
Sample {
temperature: self.temperature - rhs.temperature,
humidity: self.humidity - rhs.humidity,
eco2: self.eco2 - rhs.eco2,
tvoc: self.tvoc - rhs.tvoc,
}
}
}
impl Mul<Sample> for Sample {
type Output = Sample;
fn mul(self, rhs: Sample) -> Self::Output {
Sample {
temperature: self.temperature * rhs.temperature,
humidity: self.humidity * rhs.humidity,
eco2: self.eco2 * rhs.eco2,
tvoc: self.tvoc * rhs.tvoc,
}
}
}
impl Mul<f32> for Sample {
type Output = Sample;
fn mul(self, rhs: f32) -> Self::Output {
Sample {
temperature: self.temperature * rhs,
humidity: self.humidity * rhs,
eco2: self.eco2 * rhs,
tvoc: self.tvoc * rhs,
}
}
}
impl<'a> Sampler<'a> {
pub fn new(
i2c: impl Instance + 'a,
sda: impl PeripheralOutput<'a>,
scl: impl PeripheralOutput<'a>,
timer: &mut Delay,
) -> Self {
let i2c = I2c::new(i2c, Default::default())
.unwrap()
.with_sda(sda)
.with_scl(scl);
let i2c = Rc::new(RefCell::new(i2c));
let mut ens160 = Ens160::new(embedded_hal_bus::i2c::RcDevice::new(i2c.clone()), 0x53);
timer.delay_millis(500);
ens160.reset().unwrap();
timer.delay_millis(500);
ens160.operational().unwrap();
let aht20_uninit = AHT20::new(
embedded_hal_bus::i2c::RcDevice::new(i2c.clone()),
aht20_driver::SENSOR_ADDRESS,
);
let aht20 = aht20_uninit.init(timer).unwrap();
Sampler { ens160, aht20 }
}
pub fn sample(&mut self, timer: &mut Delay) -> Sample {
let aht20_measurement = self.aht20.measure(timer).unwrap();
Sample {
temperature: aht20_measurement.temperature,
humidity: aht20_measurement.humidity,
eco2: *self.ens160.eco2().unwrap() as f32,
tvoc: self.ens160.tvoc().unwrap() as f32,
}
}
}
pub const SECONDS_PER_SAMPLES: usize = 1;
pub const MIN_5_LENGTH: usize = (5 * 60) / SECONDS_PER_SAMPLES;
pub struct History {
// 5 minutes, every 5 seconds
pub min5: heapless::history_buf::HistoryBuf<Sample, MIN_5_LENGTH>,
// 2 hours every 5 seconds
pub hour2: heapless::history_buf::HistoryBuf<Sample, { (2 * 60) / SECONDS_PER_SAMPLES }>,
// 24 hours every 5 minutes
pub day: heapless::history_buf::HistoryBuf<Sample, { (24 * 60) / 5 }>,
samples_since_day: u32,
last_sample: Instant,
}
impl History {
pub fn new(sampler: &mut Sampler, timer: &mut Delay) -> Self {
let mut min5 = HistoryBuf::new();
let mut hour2 = HistoryBuf::new();
let mut day = HistoryBuf::new();
// First sampler
let sample = sampler.sample(timer);
min5.write(sample);
hour2.write(sample);
day.write(sample);
History {
min5,
hour2,
day,
samples_since_day: 0,
last_sample: Instant::now(),
}
}
pub fn update(&mut self, sampler: &mut Sampler, timer: &mut Delay) -> bool {
let now = Instant::now();
if now - self.last_sample > Duration::from_secs(SECONDS_PER_SAMPLES as u64) {
let sample = sampler.sample(timer);
self.last_sample = Instant::now();
self.samples_since_day += 1;
if self.samples_since_day as usize == MIN_5_LENGTH {
// Compute average
let avg = self.min5.iter().fold(Sample::zero(), |a, b| a + *b)
* (1. / self.min5.len() as f32);
self.day.write(avg);
self.samples_since_day = 0;
}
self.min5.write(sample);
self.hour2.write(sample);
true
} else {
false
}
}
}

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pub mod detail;
pub mod icon;
pub mod menu;

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use buoyant::layout::HorizontalAlignment;
use buoyant::layout::VerticalAlignment;
use buoyant::primitives::Size;
use buoyant::view::AsDrawable;
use buoyant::view::HStack;
use buoyant::view::Spacer;
use buoyant::view::Text;
use buoyant::view::VStack;
use buoyant::view::View;
use buoyant::view::ViewExt;
use embedded_graphics::Drawable;
use embedded_graphics::framebuffer::Framebuffer;
use embedded_graphics::framebuffer::buffer_size;
use embedded_graphics::image::GetPixel;
use embedded_graphics::image::ImageRaw;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::pixelcolor::raw::LittleEndian;
use embedded_graphics::prelude::DrawTarget;
use embedded_graphics::prelude::RgbColor;
use fixed::types::I16F16;
use heapless::HistoryBuf;
use profont::PROFONT_18_POINT;
use profont::PROFONT_24_POINT;
use crate::MeasurementType;
use crate::Tendencies;
use crate::colors::FRAME_STROKE_COLOR;
use crate::colors::MAIN_TEXT_COLOR;
use crate::colors::SUB_TEXT_COLOR;
use crate::graph::ECO2_LUT;
use crate::graph::FixedType;
use crate::graph::HUMIDITY_LUT;
use crate::graph::Lut;
use crate::graph::TEMPERATURE_LUT;
use crate::graph::graph_data;
//use crate::graph::max_indicator;
//use crate::graph::min_indicator;
use crate::sampler::Sample;
use crate::views::icon::icon_box_view;
use crate::views::menu::tendency_indicator;
pub fn detailed<T: DrawTarget<Color = Rgb565> + GetPixel<Color = Rgb565>, const N: usize>(
history: &HistoryBuf<Sample, N>,
tendencies: Tendencies,
indicator: MeasurementType,
target: &mut T,
) {
let _ = detailed_view_top(indicator, tendencies, *history.last().unwrap())
.as_drawable(Size::new(240, 240), Rgb565::WHITE)
.draw(target);
let mut graph_fb = Framebuffer::<
Rgb565,
_,
LittleEndian,
240,
{ 240 - 53 },
{ buffer_size::<Rgb565>(240, 240) },
>::new();
let iter = history
.oldest_ordered()
.map(|x| match indicator {
MeasurementType::Temperature => x.temperature,
MeasurementType::Humidity => x.humidity,
MeasurementType::ECo2 => x.eco2,
MeasurementType::TVoc => x.tvoc,
})
.map(I16F16::from_num);
let min = iter
.clone()
.reduce(Ord::min)
.unwrap_or(FixedType::from_num(0.));
let max = iter
.clone()
.reduce(Ord::max)
.unwrap_or(FixedType::from_num(0.));
let min_spacing = FixedType::from_num(match indicator {
MeasurementType::Temperature => 5,
MeasurementType::Humidity => 10,
MeasurementType::ECo2 => 100,
MeasurementType::TVoc => 100,
});
let middle = (max + min) / FixedType::from_num(2.);
let min = middle - min_spacing.max(max - min) / FixedType::from_num(2.);
let max = middle + min_spacing.max(max - min) / FixedType::from_num(2.);
let lut = match indicator {
MeasurementType::Temperature => Lut::HeightLut(&TEMPERATURE_LUT),
MeasurementType::Humidity => Lut::HeightLut(&HUMIDITY_LUT),
MeasurementType::ECo2 => Lut::MapLut(
&ECO2_LUT,
FixedType::from_num(500),
FixedType::from_num(1500),
),
MeasurementType::TVoc => Lut::MapLut(
&ECO2_LUT,
FixedType::from_num(200),
FixedType::from_num(1000),
),
};
graph_data(iter.clone(), min, max, lut, history.len(), &mut graph_fb);
//min_indicator(iter.clone(), history.len(), &mut graph_fb);
//max_indicator(iter.clone(), history.len(), &mut graph_fb);
let img_raw = ImageRaw::<Rgb565, LittleEndian>::new(graph_fb.data(), 240);
let image = embedded_graphics::image::Image::new(
&img_raw,
embedded_graphics::prelude::Point::new(0, 53),
);
let _ = image.draw(target);
}
pub fn detailed_view_top(
indicator: MeasurementType,
tendencies: Tendencies,
sample: Sample,
) -> impl View<Rgb565> {
VStack::new((
// Header
HStack::new((
icon_box_view(FRAME_STROKE_COLOR, indicator.get_corresponding_icon()),
Spacer::default().flex_frame().with_max_width(10),
tendency_indicator(indicator.get_tendency(tendencies)),
Text::new(indicator.get_value_str(sample), &PROFONT_24_POINT)
.foreground_color(MAIN_TEXT_COLOR),
Text::new(indicator.get_corresponding_unit_string(), &PROFONT_18_POINT)
.foreground_color(SUB_TEXT_COLOR)
.flex_frame()
.with_infinite_max_height()
.with_vertical_alignment(VerticalAlignment::Bottom)
.with_max_height(25),
Spacer::default(),
//Spacer::default().flex_frame().with_max_width(10),
)),
// Window
Spacer::default()
.flex_frame()
.with_infinite_max_width()
.with_infinite_max_height(),
))
.with_alignment(HorizontalAlignment::Leading)
}

21
src/views/icon.rs Normal file
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@ -0,0 +1,21 @@
use buoyant::view::View;
use buoyant::view::ViewExt;
use buoyant::view::ZStack;
use buoyant::view::shape::Rectangle;
use embedded_graphics::pixelcolor::Rgb565;
use crate::colors::BACKGROUND_COLOR;
use crate::get_image;
use crate::images::StaticImage;
pub fn icon_box_view(box_color: Rgb565, icon: &'static StaticImage) -> impl View<Rgb565> {
ZStack::new((
Rectangle
.corner_radius(10)
.foreground_color(BACKGROUND_COLOR),
buoyant::view::Image::new(get_image!(icon)),
))
.flex_frame()
.with_max_size(53, 53)
.with_min_size(53, 53)
}

91
src/views/menu.rs Normal file
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use buoyant::view::VStack;
use buoyant::view::View;
use buoyant::view::prelude::*;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::prelude::*;
use profont::PROFONT_18_POINT;
use profont::PROFONT_24_POINT;
use crate::MeasurementType;
use crate::Tendencies;
use crate::Tendency;
use crate::colors::FRAME_BACKGROUD_COLOR;
use crate::colors::FRAME_STROKE;
use crate::colors::FRAME_STROKE_COLOR;
use crate::colors::MAIN_TEXT_COLOR;
use crate::colors::SUB_TEXT_COLOR;
use crate::get_image;
use crate::sampler::Sample;
use crate::views::icon::icon_box_view;
pub fn menu_view(sample: Sample, tendencies: Tendencies) -> impl View<Rgb565> {
VStack::new((
HStack::new((
main_menu_indicator(MeasurementType::Temperature, tendencies, sample),
main_menu_indicator(MeasurementType::Humidity, tendencies, sample),
))
.with_spacing(2),
HStack::new((
main_menu_indicator(MeasurementType::ECo2, tendencies, sample),
main_menu_indicator(MeasurementType::TVoc, tendencies, sample),
))
.with_spacing(2),
))
.with_spacing(2)
}
fn main_menu_indicator(
indicator_type: MeasurementType,
tendencies: Tendencies,
sample: Sample,
) -> impl View<Rgb565> {
Rectangle
.corner_radius(5)
.stroked(FRAME_STROKE)
.foreground_color(FRAME_STROKE_COLOR)
.background(Alignment::Center, || {
ZStack::new((
Rectangle
.corner_radius(15)
.foreground_color(FRAME_BACKGROUD_COLOR),
VStack::new((
HStack::new((
Spacer::default(),
icon_box_view(FRAME_STROKE_COLOR, indicator_type.get_corresponding_icon()),
Spacer::default(),
)),
HStack::new((
Spacer::default(),
tendency_indicator(indicator_type.get_tendency(tendencies)),
Text::new(indicator_type.get_value_str(sample), &PROFONT_24_POINT)
.foreground_color(MAIN_TEXT_COLOR),
Text::new(
indicator_type.get_corresponding_unit_string(),
&PROFONT_18_POINT,
)
.foreground_color(SUB_TEXT_COLOR)
.flex_frame()
.with_infinite_max_height()
.with_vertical_alignment(VerticalAlignment::Bottom)
.with_max_height(25),
Spacer::default(),
)),
))
.with_alignment(HorizontalAlignment::Center)
.flex_frame(),
))
})
}
pub fn tendency_indicator(tendency: Tendency) -> impl View<Rgb565> {
HStack::new((
Image::new(get_image!(tendency.get_corresponding_icon()))
.flex_frame()
.with_min_size(10, 20)
.with_max_size(10, 20),
Spacer::default(),
))
.flex_frame()
.with_max_width(15)
}