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Felix Suchert 2022-08-02 21:50:40 +02:00
commit a398dc4a7f
Signed by: feliix42
GPG key ID: 24363525EA0E8A99
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32
Cargo.toml Normal file
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[package]
name = "inky-ticker"
version = "0.1.0"
edition = "2021"
authors = ["Felix Wittwer <dev@felixwittwer.de>"]
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
embedded-graphics = "0.7.1"
profont = "0.5.0"
#ssd1675 = { git = "https://github.com/Feliix42/ssd1675" }
ssd1675 = { path = "../ssd1675" }
linux-embedded-hal = { version = "0.3.2", optional = true }
embedded-graphics-simulator = { version = "0.3.0", optional = true }
[features]
inky = ["linux-embedded-hal"]
simulator = ["embedded-graphics-simulator"]
[[bin]]
name = "inky"
path = "src/bin/inky.rs"
required-features = ["inky"]
[[bin]]
name = "simulator"
path = "src/bin/simulator.rs"
required-features = ["simulator"]

2
Cross.toml Normal file
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[target.arm-unknown-linux-gnueabihf]
image = "rustcross/arm-unknown-linux-gnueabihf"

111
src/bin/inky.rs Normal file
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use embedded_graphics::{mono_font::MonoTextStyle, prelude::*, text::Text};
use linux_embedded_hal::{
spidev::{SpiModeFlags, SpidevOptions},
sysfs_gpio::Direction,
Delay, Pin, Spidev,
};
use profont::{PROFONT_12_POINT, PROFONT_14_POINT, PROFONT_24_POINT, PROFONT_9_POINT};
use ssd1675::{Builder, Color, Dimensions, Display, GraphicDisplay, Rotation};
use std::thread::sleep;
use std::time::Duration;
// Activate SPI, GPIO in raspi-config needs to be run with sudo because of some sysfs_gpio
// permission problems and follow-up timing problems
// see https://github.com/rust-embedded/rust-sysfs-gpio/issues/5 and follow-up issues
const ROWS: u16 = 212;
const COLS: u8 = 104;
#[rustfmt::skip]
const LUT: [u8; 70] = [
// Phase 0 Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 Phase 6
// A B C D A B C D A B C D A B C D A B C D A B C D A B C D
0b01001000, 0b10100000, 0b00010000, 0b00010000, 0b00010011, 0b00000000, 0b00000000, // LUT0 - Black
0b01001000, 0b10100000, 0b10000000, 0b00000000, 0b00000011, 0b00000000, 0b00000000, // LUTT1 - White
0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, // IGNORE
0b01001000, 0b10100101, 0b00000000, 0b10111011, 0b00000000, 0b00000000, 0b00000000, // LUT3 - Red
0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, 0b00000000, // LUT4 - VCOM
// Duration | Repeat
// A B C D |
64, 12, 32, 12, 6, // 0 Flash
16, 8, 4, 4, 6, // 1 clear
4, 8, 8, 16, 16, // 2 bring in the black
2, 2, 2, 64, 32, // 3 time for red
2, 2, 2, 2, 2, // 4 final black sharpen phase
0, 0, 0, 0, 0, // 5
0, 0, 0, 0, 0 // 6
];
fn main() -> Result<(), std::io::Error> {
// Configure SPI
let mut spi = Spidev::open("/dev/spidev0.0").expect("SPI device");
let options = SpidevOptions::new()
.bits_per_word(8)
.max_speed_hz(4_000_000)
.mode(SpiModeFlags::SPI_MODE_0)
.build();
spi.configure(&options).expect("SPI configuration");
// https://pinout.xyz/pinout/inky_phat
// Configure Digital I/O Pins
let busy = Pin::new(17); // BCM17
busy.export().expect("busy export");
while !busy.is_exported() {}
busy.set_direction(Direction::In).expect("busy Direction");
let dc = Pin::new(22); // BCM22
dc.export().expect("dc export");
while !dc.is_exported() {}
dc.set_direction(Direction::Out).expect("dc Direction");
dc.set_value(1).expect("dc Value set to 1");
let reset = Pin::new(27); // BCM27
reset.export().expect("reset export");
while !reset.is_exported() {}
reset
.set_direction(Direction::Out)
.expect("reset Direction");
reset.set_value(1).expect("reset Value set to 1");
println!("Pins configured");
// Initialise display controller
let mut delay = Delay {};
let controller = ssd1675::Interface::new(spi, busy, dc, reset);
let mut black_buffer = [0u8; ROWS as usize * COLS as usize / 8];
let mut red_buffer = [0u8; ROWS as usize * COLS as usize / 8];
let config = Builder::new()
.dimensions(Dimensions {
rows: ROWS,
cols: COLS,
})
.rotation(Rotation::Rotate90)
.lut(&LUT)
.build()
.expect("invalid configuration");
let display = Display::new(controller, config);
let mut display = GraphicDisplay::new(display, &mut black_buffer, &mut red_buffer);
// Main loop. Displays CPU temperature, uname, and uptime every minute with a red Raspberry Pi
// header.
loop {
display.reset(&mut delay).expect("error resetting display");
println!("Reset and initialised");
let one_minute = Duration::from_secs(60);
display.clear(Color::White);
println!("Clear");
inky_ticker::populate(&mut display);
display.update(&mut delay).expect("error updating display");
println!("Update...");
println!("Finished - going to sleep");
display.deep_sleep()?;
sleep(one_minute);
}
}

38
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use ssd1675::Color;
use embedded_graphics::{
pixelcolor::BinaryColor,
prelude::*,
primitives::{Circle, Line, Rectangle, PrimitiveStyle},
mono_font::{ascii::FONT_6X9, MonoTextStyle},
text::Text,
};
use embedded_graphics_simulator::{BinaryColorTheme, SimulatorDisplay, Window, OutputSettingsBuilder, OutputSettings};
fn main() -> Result<(), core::convert::Infallible> {
println!("Initialize Display");
let mut display = SimulatorDisplay::<Color>::new(Size::new(212, 104));
let output_settings = OutputSettingsBuilder::new()
.theme(BinaryColorTheme::OledBlue)
.build();
println!("Creating Window");
let mut window = Window::new("Hello World", &OutputSettings::default());
//loop {
//println!("Populate display...");
//inky_ticker::populate(&mut display);
//println!("Updating window");
//window.update(&display);
//std::thread::sleep(std::time::Duration::from_secs(1));
//}
inky_ticker::populate(&mut display);
window.show_static(&display);
Ok(())
}

95
src/lib.rs Normal file
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use embedded_graphics::{
draw_target::DrawTarget, mono_font::MonoTextStyle, prelude::*, text::Text,
};
use profont::{PROFONT_12_POINT, PROFONT_14_POINT, PROFONT_24_POINT, PROFONT_9_POINT};
use ssd1675::Color;
use std::process::Command;
use std::fmt::Debug;
use std::{fs, io};
pub fn populate<D>(display: &mut D)
where
D: DrawTarget<Color = Color>,
D::Error: Debug
{
Text::new(
"Raspberry Pi",
Point::new(1, 20),
MonoTextStyle::new(&PROFONT_24_POINT, Color::Red),
)
.draw(display)
.expect("error drawing text");
if let Ok(cpu_temp) = read_cpu_temp() {
Text::new(
"CPU Temp:",
Point::new(1, 40),
MonoTextStyle::new(&PROFONT_14_POINT, Color::Black),
)
.draw(display)
.expect("error drawing text");
Text::new(
&format!("{:.1}°C", cpu_temp),
Point::new(95, 40),
MonoTextStyle::new(&PROFONT_12_POINT, Color::Red),
)
.draw(display)
.expect("error drawing text");
}
if let Some(uptime) = read_uptime() {
Text::new(
uptime.trim(),
Point::new(1, 93),
MonoTextStyle::new(&PROFONT_9_POINT, Color::Black),
)
.draw(display)
.expect("error drawing text");
}
if let Some(uname) = read_uname() {
Text::new(
uname.trim(),
Point::new(1, 84),
MonoTextStyle::new(&PROFONT_9_POINT, Color::Black),
)
.draw(display)
.expect("error drawing text");
}
}
pub fn read_cpu_temp() -> Result<f64, io::Error> {
fs::read_to_string("/sys/class/thermal/thermal_zone0/temp")?
.trim()
.parse::<i32>()
.map(|temp| temp as f64 / 1000.)
.map_err(|err| io::Error::new(io::ErrorKind::Other, err))
}
pub fn read_uptime() -> Option<String> {
Command::new("uptime")
.arg("-p")
.output()
.ok()
.and_then(|output| {
if output.status.success() {
String::from_utf8(output.stdout).ok()
} else {
None
}
})
}
pub fn read_uname() -> Option<String> {
Command::new("uname")
.arg("-smr")
.output()
.ok()
.and_then(|output| {
if output.status.success() {
String::from_utf8(output.stdout).ok()
} else {
None
}
})
}