tangent128/holiday_lights
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ca70b50e49 ... fefe4e100e

5 changed files with 26 additions and 147 deletions
harrogate
.cargo
config
Cargo.toml
src
halloween_2024.rsmain.rs
itsybitsy_m0_lights/src
lib.rs

0
harrogate/.cargo/config.toml → harrogate/.cargo/config
View file

1
harrogate/Cargo.toml
View file

@ -26,7 +26,6 @@ halloween-2020 = ["replace-default"]
halloween-2021 = ["replace-default"]
halloween-2022 = ["replace-default"]
halloween-2023 = ["replace-default"]
halloween-2024 = ["replace-default"]
new-years-eve-2020 = ["replace-default"]
november-2020 = ["replace-default"]

74
harrogate/src/halloween_2024.rs
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@ -1,74 +0,0 @@
//! purple-and-orange with chaotically-varying background
use super::delay;
use house::{Harrogate, PORCH_BACK_LEN, PORCH_FRONT_LEN};
use lights::{murmurf, rgb::Rgb, HardwareRgb, Lights};
const BLACK: Rgb = Rgb(0, 0, 0);
const ORANGE: Rgb = Rgb(255, 150, 0);
const PURPLE: Rgb = Rgb(100, 0, 128);
const COLORS: &[Rgb] = &[
Rgb(255, 0, 0),
Rgb(0, 1, 0),
Rgb(150, 150, 150),
Rgb(0, 1, 0),
Rgb(255, 150, 0),
Rgb(0, 1, 0),
Rgb(150, 0, 255),
Rgb(0, 1, 0),
];
/*const RAINBOW: &[Rgb] = &[
Rgb(255, 0, 0),
Rgb(255, 150, 0),
Rgb(255, 255, 0),
Rgb(150, 255, 0),
Rgb(0, 255, 0),
Rgb(0, 255, 255),
Rgb(0, 0, 255),
Rgb(150, 0, 255),
Rgb(255, 0, 150),
];*/
// a hundredth of a second
const TIC: u32 = 48_000_0;
#[allow(dead_code)]
#[inline(always)]
pub fn run(lights: &mut impl Lights<Pixel = HardwareRgb>) -> ! {
let mut rng = 0x642u32;
let mut bar = 0;
let mut color_index: usize = 0;
let mut back_buffer = [BLACK; PORCH_BACK_LEN];
let mut draw = |back_buffer: &[Rgb]| {
let front_pattern = [PURPLE, ORANGE].iter().cycle().cloned();
Harrogate {
porch_front: front_pattern.take(PORCH_FRONT_LEN),
porch_back: back_buffer.iter().cloned(),
}
.render_to(lights);
};
loop {
// animate rainbow bars
if bar == 0 {
color_index = (color_index + 1 + (murmurf(&mut rng) as usize % 6)) % COLORS.len();
bar = 10;
}
bar -= 1;
// push into buffer
back_buffer.rotate_right(1);
back_buffer[0] = COLORS[color_index];
back_buffer[PORCH_BACK_LEN - 1].1 = 255;
// render
draw(&back_buffer);
delay(TIC);
}
}

4
harrogate/src/main.rs
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@ -17,7 +17,6 @@ mod halloween_2020;
mod halloween_2021;
mod halloween_2022;
mod halloween_2023;
mod halloween_2024;
mod november_2020;
mod new_years_eve_2020;
mod door_light;
@ -63,9 +62,6 @@ fn main() -> ! {
#[cfg(feature = "halloween-2023")]
halloween_2023::run(&mut lights);
#[cfg(feature = "halloween-2024")]
halloween_2024::run(&mut lights);
#[cfg(feature = "new-years-eve-2020")]
new_years_eve_2020::run(&mut lights);

94
itsybitsy_m0_lights/src/lib.rs
View file

@ -63,85 +63,43 @@ where
{
#[inline]
pub fn write(&mut self, bit: bool) {
// go high
self.high_out.set_high().unwrap();
// experimentally, there is some unknown overhead
// but these timings appear to work for me
unsafe {
compiler_fence(Ordering::SeqCst);
asm!(
// 8 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
if bit {
unsafe {
compiler_fence(Ordering::SeqCst);
self.high_out.set_high().unwrap();
compiler_fence(Ordering::SeqCst);
asm!(
// 15 nops
// 14 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
"nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
self.high_out.set_low().unwrap();
compiler_fence(Ordering::SeqCst);
asm!(
// 8 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
} else {
unsafe {
compiler_fence(Ordering::SeqCst);
self.high_out.set_high().unwrap();
compiler_fence(Ordering::SeqCst);
asm!(
// 8 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
self.high_out.set_low().unwrap();
compiler_fence(Ordering::SeqCst);
asm!(
// 15 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
"nop;", "nop;", "nop;", "nop;", "nop;",
"nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
}
if false {
// go high
self.high_out.set_high().unwrap();
// go low
self.high_out.set_low().unwrap();
// experimentally, there is some unknown overhead
// but these timings appear to work for me
unsafe {
compiler_fence(Ordering::SeqCst);
asm!(
// 8 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
if bit {
unsafe {
compiler_fence(Ordering::SeqCst);
asm!(
// 14 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
"nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
}
// go low
self.high_out.set_low().unwrap();
unsafe {
compiler_fence(Ordering::SeqCst);
asm!(
// 15 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
"nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
unsafe {
compiler_fence(Ordering::SeqCst);
asm!(
// 15 nops
"nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;", "nop;",
"nop;", "nop;", "nop;", "nop;", "nop;",
);
compiler_fence(Ordering::SeqCst);
}
}