#![no_std]
#![no_main]
use esp32_hal::{
clock::ClockControl,
pac::Peripherals,
gpio_types::*,
gpio::*,
prelude::*,
spi,
timer::TimerGroup,
Rtc,
IO,
Delay,
};
/* Display and graphics */
use ili9341::{DisplaySize240x320, Ili9341, Orientation};
use display_interface_spi::SPIInterfaceNoCS;
use embedded_graphics::mono_font::MonoTextStyle;
use embedded_graphics::pixelcolor::*;
use embedded_graphics::prelude::*;
use embedded_graphics::primitives::*;
use embedded_graphics::text::*;
use embedded_graphics::image::Image;
use embedded_graphics::geometry::*;
use embedded_graphics::draw_target::DrawTarget;
use embedded_hal;
use profont::{PROFONT_24_POINT, PROFONT_18_POINT};
use xtensa_lx_rt::entry;
use esp_println::println;
use esp_backtrace as _;
const textStyle : TextStyle = TextStyleBuilder::new()
.alignment(embedded_graphics::text::Alignment::Center)
.baseline(embedded_graphics::text::Baseline::Middle)
.build();
/* Some stuff for correct orientation and color on ILI9341 */
pub enum KalugaOrientation {
Portrait,
PortraitFlipped,
Landscape,
LandscapeVericallyFlipped,
LandscapeFlipped,
}
impl ili9341::Mode for KalugaOrientation {
fn mode(&self) -> u8 {
match self {
Self::Portrait => 0,
Self::LandscapeVericallyFlipped => 0x20,
Self::Landscape => 0x20 | 0x40,
Self::PortraitFlipped => 0x80 | 0x40,
Self::LandscapeFlipped => 0x80 | 0x20 | 0x08,
}
}
fn is_landscape(&self) -> bool {
matches!(self, Self::Landscape | Self::LandscapeFlipped | Self::LandscapeVericallyFlipped)
}
}
/* Debouncing algorythm */
pub enum Event {
Pressed,
Released,
Nothing,
}
pub struct Button<T> {
button: T,
pressed: bool,
}
impl<T: ::embedded_hal::digital::v2::InputPin<Error = core::convert::Infallible>> Button<T> {
pub fn new(button: T) -> Self {
Button {
button,
pressed: true,
}
}
pub fn check(&mut self){
self.pressed = !self.button.is_low().unwrap();
}
pub fn poll(&mut self, delay :&mut Delay) -> Event {
let pressed_now = !self.button.is_low().unwrap();
if !self.pressed && pressed_now
{
delay.delay_ms(30 as u32);
self.check();
if !self.button.is_low().unwrap() {
Event::Pressed
}
else {
Event::Nothing
}
}
else if self.pressed && !pressed_now{
delay.delay_ms(30 as u32);
self.check();
if self.button.is_low().unwrap()
{
Event::Released
}
else {
Event::Nothing
}
}
else{
Event::Nothing
}
}
}
#[entry]
fn main() -> ! {
let peripherals = Peripherals::take().unwrap();
let mut system = peripherals.DPORT.split();
let mut clocks = ClockControl::boot_defaults(system.clock_control).freeze();
// Disable the RTC and TIMG watchdog timers
let mut rtc = Rtc::new(peripherals.RTC_CNTL);
let timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
let mut wdt0 = timer_group0.wdt;
let timer_group1 = TimerGroup::new(peripherals.TIMG1, &clocks);
let mut wdt1 = timer_group1.wdt;
rtc.rwdt.disable();
wdt0.disable();
wdt1.disable();
println!("About to initialize the SPI LED driver ILI9341");
let io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
/* Set corresponding pins */
let mosi = io.pins.gpio23;
let cs = io.pins.gpio15;
let rst = io.pins.gpio4;
let dc = io.pins.gpio2;
let sck = io.pins.gpio18;
let miso = io.pins.gpio8;
let backlight = io.pins.gpio17;
/* Then set backlight (set_low() - display lights up when signal is in 0, set_high() - opposite case(for example.)) */
let mut backlight = backlight.into_push_pull_output();
backlight.set_high().unwrap();
let spi = spi::Spi::new(
peripherals.SPI3,
sck,
mosi,
miso,
cs,
400u32.MHz(),
spi::SpiMode::Mode0,
&mut system.peripheral_clock_control,
&mut clocks,
);
let di = SPIInterfaceNoCS::new(spi, dc.into_push_pull_output());
let reset = rst.into_push_pull_output();
let mut delay = Delay::new(&clocks);
let mut display = Ili9341::new(di, reset, &mut delay, KalugaOrientation::LandscapeFlipped, DisplaySize240x320).unwrap();
println!("Display initialized");
display.clear(Rgb565::WHITE).unwrap();
let mut button_green = Button::new(io.pins.gpio21.into_pull_up_input());
let mut button_blue = Button::new(io.pins.gpio13.into_pull_up_input());
Text::with_text_style("Press GREEN button",
display.bounding_box().center() - Size::new(0, 35),
MonoTextStyle::new(&PROFONT_18_POINT, Rgb565::BLACK),
textStyle,
)
.draw(&mut display)
.unwrap();
Text::with_text_style("Press BLUE button",
display.bounding_box().center() + Size::new(0, 25),
MonoTextStyle::new(&PROFONT_18_POINT, Rgb565::BLACK),
textStyle,
)
.draw(&mut display)
.unwrap();
let mut green_cnt = 0;
let mut blue_cnt = 0;
let mut last_pressed_blue : bool = false;
loop {
if let Event::Pressed = button_green.poll(&mut delay)
{
green_cnt += 1;
Rectangle::with_center(display.bounding_box().center() - Size::new(0, 30), Size::new(270, 30))
.into_styled(
PrimitiveStyleBuilder::new()
.fill_color(Rgb565::WHITE)
.stroke_color(Rgb565::WHITE)
.stroke_width(1)
.build(),
)
.draw(&mut display);
Text::with_text_style("Green button pressed!",
display.bounding_box().center() - Size::new(0, 35),
MonoTextStyle::new(&PROFONT_18_POINT, Rgb565::CSS_GREEN),
textStyle,
)
.draw(&mut display)
.unwrap();
println!("Green! (x{})", green_cnt);
if last_pressed_blue {
Rectangle::with_center(display.bounding_box().center() + Size::new(0, 30), Size::new(270, 30))
.into_styled(
PrimitiveStyleBuilder::new()
.fill_color(Rgb565::WHITE)
.stroke_color(Rgb565::WHITE)
.stroke_width(1)
.build(),
)
.draw(&mut display);
Text::with_text_style("Press BLUE button",
display.bounding_box().center() + Size::new(0, 25),
MonoTextStyle::new(&PROFONT_18_POINT, Rgb565::BLACK),
textStyle,
)
.draw(&mut display)
.unwrap();
}
last_pressed_blue = false;
}
if let Event::Pressed = button_blue.poll(&mut delay)
{
blue_cnt += 1;
Rectangle::with_center(display.bounding_box().center() + Size::new(0, 30), Size::new(270, 30))
.into_styled(
PrimitiveStyleBuilder::new()
.fill_color(Rgb565::WHITE)
.stroke_color(Rgb565::WHITE)
.stroke_width(1)
.build(),
)
.draw(&mut display);
Text::with_text_style("Blue button pressed!",
display.bounding_box().center() + Size::new(0, 25),
MonoTextStyle::new(&PROFONT_18_POINT, Rgb565::BLUE),
textStyle,
)
.draw(&mut display)
.unwrap();
println!("Blue! (x{})", blue_cnt);
if !last_pressed_blue {
Rectangle::with_center(display.bounding_box().center() - Size::new(0, 30), Size::new(270, 30))
.into_styled(
PrimitiveStyleBuilder::new()
.fill_color(Rgb565::WHITE)
.stroke_color(Rgb565::WHITE)
.stroke_width(1)
.build(),
)
.draw(&mut display);
Text::with_text_style("Press GREEN button",
display.bounding_box().center() - Size::new(0, 35),
MonoTextStyle::new(&PROFONT_18_POINT, Rgb565::BLACK),
textStyle,
)
.draw(&mut display)
.unwrap();
}
last_pressed_blue = true;
}
}
}