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|
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[package] |
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name = "embedded_linux_eink_example" |
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version = "0.1.0" |
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authors = [ |
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"Christoph Groß <christoph-gross@mailbox.org>", |
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"Jack Grigg <thestr4d@gmail.com>", |
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] |
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edition = "2018" |
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|
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[dependencies] |
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embedded-graphics = "0.5.2" |
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embedded-hal = { version = "0.2.2", features = ["unproven"] } |
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epd-waveshare = { path = "../../", default-features = false, features = ["epd7in5", "graphics"]} |
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linux-embedded-hal = "0.2.2" |
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#![deny(warnings)] |
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use embedded_graphics::{ |
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coord::Coord, |
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fonts::{Font12x16, Font6x8}, |
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prelude::*, |
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primitives::{Circle, Line}, |
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Drawing, |
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}; |
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use embedded_hal::prelude::*; |
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use epd_waveshare::{ |
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epd7in5::{Display7in5, EPD7in5}, |
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graphics::{Display, DisplayRotation}, |
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prelude::*, |
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}; |
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use linux_embedded_hal::{ |
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spidev::{self, SpidevOptions}, |
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sysfs_gpio::Direction, |
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Delay, Pin, Spidev, |
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}; |
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// activate spi, gpio in raspi-config
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// needs to be run with sudo because of some sysfs_gpio permission problems and follow-up timing problems
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// see https://github.com/rust-embedded/rust-sysfs-gpio/issues/5 and follow-up issues
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fn main() { |
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if let Err(e) = run() { |
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eprintln!("Program exited early with error: {}", e); |
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} |
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} |
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fn run() -> Result<(), std::io::Error> { |
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// Configure SPI
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// Settings are taken from
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let mut spi = Spidev::open("/dev/spidev0.0").expect("spidev directory"); |
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let options = SpidevOptions::new() |
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.bits_per_word(8) |
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.max_speed_hz(4_000_000) |
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.mode(spidev::SPI_MODE_0) |
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.build(); |
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spi.configure(&options).expect("spi configuration"); |
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// Configure Digital I/O Pin to be used as Chip Select for SPI
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let cs = Pin::new(8); |
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cs.export().expect("cs export"); |
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while !cs.is_exported() {} |
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cs.set_direction(Direction::Out).expect("CS Direction"); |
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cs.set_value(1).expect("CS Value set to 1"); |
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|
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let busy = Pin::new(24); |
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busy.export().expect("busy export"); |
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while !busy.is_exported() {} |
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busy.set_direction(Direction::In).expect("busy Direction"); |
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|
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let dc = Pin::new(25); |
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dc.export().expect("dc export"); |
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while !dc.is_exported() {} |
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dc.set_direction(Direction::Out).expect("dc Direction"); |
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dc.set_value(1).expect("dc Value set to 1"); |
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|
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let rst = Pin::new(17); |
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rst.export().expect("rst export"); |
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while !rst.is_exported() {} |
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rst.set_direction(Direction::Out).expect("rst Direction"); |
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rst.set_value(1).expect("rst Value set to 1"); |
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let mut delay = Delay {}; |
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let mut epd7in5 = |
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EPD7in5::new(&mut spi, cs, busy, dc, rst, &mut delay).expect("eink initalize error"); |
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println!("Test all the rotations"); |
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let mut display = Display7in5::default(); |
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display.set_rotation(DisplayRotation::Rotate0); |
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display.draw( |
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Font6x8::render_str("Rotate 0!") |
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.stroke(Some(Color::Black)) |
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.fill(Some(Color::White)) |
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.translate(Coord::new(5, 50)) |
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.into_iter(), |
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); |
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display.set_rotation(DisplayRotation::Rotate90); |
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display.draw( |
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Font6x8::render_str("Rotate 90!") |
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.stroke(Some(Color::Black)) |
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.fill(Some(Color::White)) |
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.translate(Coord::new(5, 50)) |
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.into_iter(), |
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); |
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display.set_rotation(DisplayRotation::Rotate180); |
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display.draw( |
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Font6x8::render_str("Rotate 180!") |
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.stroke(Some(Color::Black)) |
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.fill(Some(Color::White)) |
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.translate(Coord::new(5, 50)) |
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.into_iter(), |
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); |
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display.set_rotation(DisplayRotation::Rotate270); |
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display.draw( |
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Font6x8::render_str("Rotate 270!") |
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.stroke(Some(Color::Black)) |
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.fill(Some(Color::White)) |
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.translate(Coord::new(5, 50)) |
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.into_iter(), |
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); |
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epd7in5.update_frame(&mut spi, &display.buffer()).unwrap(); |
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epd7in5 |
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.display_frame(&mut spi) |
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.expect("display frame new graphics"); |
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delay.delay_ms(5000u16); |
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println!("Now test new graphics with default rotation and some special stuff:"); |
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display.clear_buffer(Color::White); |
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// draw a analog clock
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display.draw( |
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Circle::new(Coord::new(64, 64), 64) |
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.stroke(Some(Color::Black)) |
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.into_iter(), |
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); |
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display.draw( |
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Line::new(Coord::new(64, 64), Coord::new(0, 64)) |
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.stroke(Some(Color::Black)) |
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.into_iter(), |
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); |
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display.draw( |
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Line::new(Coord::new(64, 64), Coord::new(80, 80)) |
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.stroke(Some(Color::Black)) |
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.into_iter(), |
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); |
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// draw white on black background
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display.draw( |
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Font6x8::render_str("It's working-WoB!") |
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// Using Style here
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.style(Style { |
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fill_color: Some(Color::Black), |
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stroke_color: Some(Color::White), |
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stroke_width: 0u8, // Has no effect on fonts
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}) |
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.translate(Coord::new(175, 250)) |
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.into_iter(), |
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); |
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// use bigger/different font
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display.draw( |
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Font12x16::render_str("It's working-BoW!") |
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// Using Style here
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.style(Style { |
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fill_color: Some(Color::White), |
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stroke_color: Some(Color::Black), |
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stroke_width: 0u8, // Has no effect on fonts
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}) |
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.translate(Coord::new(50, 200)) |
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.into_iter(), |
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); |
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// a moving `Hello World!`
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let limit = 10; |
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for i in 0..limit { |
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println!("Moving Hello World. Loop {} from {}", (i + 1), limit); |
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display.draw( |
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Font6x8::render_str(" Hello World! ") |
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.style(Style { |
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fill_color: Some(Color::White), |
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stroke_color: Some(Color::Black), |
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stroke_width: 0u8, // Has no effect on fonts
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}) |
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.translate(Coord::new(5 + i * 12, 50)) |
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.into_iter(), |
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); |
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epd7in5.update_frame(&mut spi, &display.buffer()).unwrap(); |
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epd7in5 |
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.display_frame(&mut spi) |
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.expect("display frame new graphics"); |
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delay.delay_ms(1_000u16); |
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} |
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println!("Finished tests - going to sleep"); |
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epd7in5.sleep(&mut spi) |
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} |
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