Browse Source
- Added is_busy to Waveshare_Interface - Added IS_BUSY_LOW const for all supported epds - Added is_busy to DisplayInterface - moved width, height and default_background_color directly to epd4in2 module - Added VarDisplay (a variable buffersize display/graphic driver) - Removed all Buffers (Buffer1in54,...) and instead made specialised Displays (Display1in54,...) with included Buffers - Updated and added more examples - Cargo fmt/clippy - Improved Docs/Readmesembedded-hal-1.0
Chris
7 years ago
committed by
GitHub
24 changed files with 745 additions and 335 deletions
@ -1,12 +1,20 @@
|
||||
# Examples: |
||||
|
||||
### embedded_linux_epd4in2 |
||||
All of these examples are projects of their own. |
||||
|
||||
Basic example of using a Raspberry Pi with the 4in2 Waveshare E-Ink Display. |
||||
A few notes: |
||||
- If not stated otherwise the example is for a Raspberry Pi running Linux. |
||||
- epdXinYY_full showcase most of what can be done with this crate. This means that they are using graphics feature and use the DisplayXinYY with its buffer. |
||||
|
||||
It showcases most of what can be done with the crate. |
||||
Special Examples: |
||||
|
||||
### epd4in2_var_display_buffer |
||||
|
||||
This examples used the graphics feature with VarDisplay and therefore a variable buffer(size). |
||||
|
||||
### epd1in54_no_graphics (Fastest Example) |
||||
|
||||
This example doesn't use the graphics feature and handles all the "drawing" by itself. It also has a speeddemonstration included. |
||||
|
||||
### embedded_linux_epd1in54 |
||||
|
||||
This example doesn't use the graphics feature of the crate and shows the fast update rate of the 1in54 EPD. |
||||
|
||||
|
||||
@ -0,0 +1,12 @@
|
||||
[package] |
||||
name = "embedded_linux_eink_example" |
||||
version = "0.1.0" |
||||
authors = ["Christoph Groß <christoph-gross@mailbox.org>"] |
||||
edition = "2018" |
||||
|
||||
[dependencies] |
||||
|
||||
epd-waveshare = { path = "../../", default-features = false, features = ["epd1in54"]} |
||||
|
||||
linux-embedded-hal = "0.2.2" |
||||
embedded-hal = { version = "0.2.2", features = ["unproven"] } |
||||
@ -0,0 +1,105 @@
|
||||
#![deny(warnings)] |
||||
|
||||
use embedded_hal::prelude::*; |
||||
use epd_waveshare::{epd1in54::EPD1in54, prelude::*}; |
||||
use linux_embedded_hal::{ |
||||
spidev::{self, SpidevOptions}, |
||||
sysfs_gpio::Direction, |
||||
Delay, Pin, Spidev, |
||||
}; |
||||
|
||||
// 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
|
||||
|
||||
fn main() { |
||||
if let Err(e) = run() { |
||||
eprintln!("Program exited early with error: {}", e); |
||||
} |
||||
} |
||||
|
||||
fn run() -> Result<(), std::io::Error> { |
||||
// Configure SPI
|
||||
// SPI settings are from eink-waveshare-rs documenation
|
||||
let mut spi = Spidev::open("/dev/spidev0.0")?; |
||||
let options = SpidevOptions::new() |
||||
.bits_per_word(8) |
||||
.max_speed_hz(4_000_000) |
||||
.mode(spidev::SPI_MODE_0) |
||||
.build(); |
||||
spi.configure(&options).expect("spi configuration"); |
||||
|
||||
// Configure Digital I/O Pin to be used as Chip Select for SPI
|
||||
let cs_pin = Pin::new(26); //BCM7 CE0
|
||||
cs_pin.export().expect("cs_pin export"); |
||||
while !cs_pin.is_exported() {} |
||||
cs_pin |
||||
.set_direction(Direction::Out) |
||||
.expect("cs_pin Direction"); |
||||
cs_pin.set_value(1).expect("cs_pin Value set to 1"); |
||||
|
||||
// Configure Busy Input Pin
|
||||
let busy = Pin::new(5); //pin 29
|
||||
busy.export().expect("busy export"); |
||||
while !busy.is_exported() {} |
||||
busy.set_direction(Direction::In).expect("busy Direction"); |
||||
//busy.set_value(1).expect("busy Value set to 1");
|
||||
|
||||
// Configure Data/Command OutputPin
|
||||
let dc = Pin::new(6); //pin 31 //bcm6
|
||||
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"); |
||||
|
||||
// Configure Reset OutputPin
|
||||
let rst = Pin::new(16); //pin 36 //bcm16
|
||||
rst.export().expect("rst export"); |
||||
while !rst.is_exported() {} |
||||
rst.set_direction(Direction::Out).expect("rst Direction"); |
||||
rst.set_value(1).expect("rst Value set to 1"); |
||||
|
||||
// Configure Delay
|
||||
let mut delay = Delay {}; |
||||
|
||||
// Setup of the needed pins is finished here
|
||||
// Now the "real" usage of the eink-waveshare-rs crate begins
|
||||
let mut epd = EPD1in54::new(&mut spi, cs_pin, busy, dc, rst, &mut delay)?; |
||||
|
||||
// Clear the full screen
|
||||
epd.clear_frame(&mut spi)?; |
||||
epd.display_frame(&mut spi)?; |
||||
|
||||
// Speeddemo
|
||||
epd.set_lut(&mut spi, Some(RefreshLUT::QUICK))?; |
||||
let small_buffer = [Color::Black.get_byte_value(); 32]; //16x16
|
||||
let number_of_runs = 1; |
||||
for i in 0..number_of_runs { |
||||
let offset = i * 8 % 150; |
||||
epd.update_partial_frame(&mut spi, &small_buffer, 25 + offset, 25 + offset, 16, 16)?; |
||||
epd.display_frame(&mut spi)?; |
||||
} |
||||
|
||||
// Clear the full screen
|
||||
epd.clear_frame(&mut spi)?; |
||||
epd.display_frame(&mut spi)?; |
||||
|
||||
// Draw some squares
|
||||
let small_buffer = [Color::Black.get_byte_value(); 3200]; //160x160
|
||||
epd.update_partial_frame(&mut spi, &small_buffer, 20, 20, 160, 160)?; |
||||
|
||||
let small_buffer = [Color::White.get_byte_value(); 800]; //80x80
|
||||
epd.update_partial_frame(&mut spi, &small_buffer, 60, 60, 80, 80)?; |
||||
|
||||
let small_buffer = [Color::Black.get_byte_value(); 8]; //8x8
|
||||
epd.update_partial_frame(&mut spi, &small_buffer, 96, 96, 8, 8)?; |
||||
|
||||
// Display updated frame
|
||||
epd.display_frame(&mut spi)?; |
||||
delay.delay_ms(5000u16); |
||||
|
||||
// Set the EPD to sleep
|
||||
epd.sleep(&mut spi)?; |
||||
|
||||
Ok(()) |
||||
} |
||||
@ -0,0 +1,15 @@
|
||||
[package] |
||||
name = "embedded_linux_eink_example" |
||||
version = "0.1.0" |
||||
authors = ["Christoph Groß <christoph-gross@mailbox.org>"] |
||||
edition = "2018" |
||||
|
||||
[dependencies] |
||||
|
||||
## The Only difference between this one and the one without default features sizewise seems to be a different .d-file Size (dependencies-file) |
||||
#epd_waveshare = { path = "../../"} |
||||
epd-waveshare = { path = "../../", default-features = false, features = ["epd4in2", "graphics"]} |
||||
|
||||
linux-embedded-hal = "0.2.2" |
||||
embedded-graphics = "0.4.5" |
||||
embedded-hal = { version = "0.2.2", features = ["unproven"] } |
||||
@ -0,0 +1,195 @@
|
||||
#![deny(warnings)] |
||||
|
||||
use embedded_graphics::{ |
||||
coord::Coord, |
||||
fonts::{Font12x16, Font6x8}, |
||||
prelude::*, |
||||
primitives::{Circle, Line}, |
||||
Drawing, |
||||
}; |
||||
use embedded_hal::prelude::*; |
||||
use epd_waveshare::{ |
||||
epd4in2::{self, EPD4in2}, |
||||
graphics::{Display, DisplayRotation, VarDisplay}, |
||||
prelude::*, |
||||
}; |
||||
use linux_embedded_hal::{ |
||||
spidev::{self, SpidevOptions}, |
||||
sysfs_gpio::Direction, |
||||
Delay, Pin, Spidev, |
||||
}; |
||||
|
||||
// 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
|
||||
|
||||
fn main() { |
||||
if let Err(e) = run() { |
||||
eprintln!("Program exited early with error: {}", e); |
||||
} |
||||
} |
||||
|
||||
fn run() -> Result<(), std::io::Error> { |
||||
// Configure SPI
|
||||
// Settings are taken from
|
||||
let mut spi = Spidev::open("/dev/spidev0.0").expect("spidev directory"); |
||||
let options = SpidevOptions::new() |
||||
.bits_per_word(8) |
||||
.max_speed_hz(4_000_000) |
||||
.mode(spidev::SPI_MODE_0) |
||||
.build(); |
||||
spi.configure(&options).expect("spi configuration"); |
||||
|
||||
// Configure Digital I/O Pin to be used as Chip Select for SPI
|
||||
let cs = Pin::new(26); //BCM7 CE0
|
||||
cs.export().expect("cs export"); |
||||
while !cs.is_exported() {} |
||||
cs.set_direction(Direction::Out).expect("CS Direction"); |
||||
cs.set_value(1).expect("CS Value set to 1"); |
||||
|
||||
let busy = Pin::new(5); //pin 29
|
||||
busy.export().expect("busy export"); |
||||
while !busy.is_exported() {} |
||||
busy.set_direction(Direction::In).expect("busy Direction"); |
||||
//busy.set_value(1).expect("busy Value set to 1");
|
||||
|
||||
let dc = Pin::new(6); //pin 31 //bcm6
|
||||
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 rst = Pin::new(16); //pin 36 //bcm16
|
||||
rst.export().expect("rst export"); |
||||
while !rst.is_exported() {} |
||||
rst.set_direction(Direction::Out).expect("rst Direction"); |
||||
rst.set_value(1).expect("rst Value set to 1"); |
||||
|
||||
let mut delay = Delay {}; |
||||
|
||||
let mut epd4in2 = |
||||
EPD4in2::new(&mut spi, cs, busy, dc, rst, &mut delay).expect("eink initalize error"); |
||||
|
||||
println!("Test all the rotations"); |
||||
|
||||
let (x, y, width, height) = (50, 50, 250, 250); |
||||
|
||||
let mut buffer = [epd4in2::DEFAULT_BACKGROUND_COLOR.get_byte_value(); 62500]; //250*250
|
||||
let mut display = VarDisplay::new(width, height, &mut buffer); |
||||
display.set_rotation(DisplayRotation::Rotate0); |
||||
display.draw( |
||||
Font6x8::render_str("Rotate 0!") |
||||
.with_stroke(Some(Color::Black)) |
||||
.with_fill(Some(Color::White)) |
||||
.translate(Coord::new(5, 50)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
display.set_rotation(DisplayRotation::Rotate90); |
||||
display.draw( |
||||
Font6x8::render_str("Rotate 90!") |
||||
.with_stroke(Some(Color::Black)) |
||||
.with_fill(Some(Color::White)) |
||||
.translate(Coord::new(5, 50)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
display.set_rotation(DisplayRotation::Rotate180); |
||||
display.draw( |
||||
Font6x8::render_str("Rotate 180!") |
||||
.with_stroke(Some(Color::Black)) |
||||
.with_fill(Some(Color::White)) |
||||
.translate(Coord::new(5, 50)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
display.set_rotation(DisplayRotation::Rotate270); |
||||
display.draw( |
||||
Font6x8::render_str("Rotate 270!") |
||||
.with_stroke(Some(Color::Black)) |
||||
.with_fill(Some(Color::White)) |
||||
.translate(Coord::new(5, 50)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
epd4in2 |
||||
.update_partial_frame(&mut spi, &display.buffer(), x, y, width, height) |
||||
.unwrap(); |
||||
epd4in2 |
||||
.display_frame(&mut spi) |
||||
.expect("display frame new graphics"); |
||||
delay.delay_ms(5000u16); |
||||
|
||||
println!("Now test new graphics with default rotation and some special stuff:"); |
||||
display.clear_buffer(Color::White); |
||||
|
||||
// draw a analog clock
|
||||
display.draw( |
||||
Circle::new(Coord::new(64, 64), 64) |
||||
.with_stroke(Some(Color::Black)) |
||||
.into_iter(), |
||||
); |
||||
display.draw( |
||||
Line::new(Coord::new(64, 64), Coord::new(0, 64)) |
||||
.with_stroke(Some(Color::Black)) |
||||
.into_iter(), |
||||
); |
||||
display.draw( |
||||
Line::new(Coord::new(64, 64), Coord::new(80, 80)) |
||||
.with_stroke(Some(Color::Black)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
// draw white on black background
|
||||
display.draw( |
||||
Font6x8::render_str("It's working-WoB!") |
||||
// Using Style here
|
||||
.with_style(Style { |
||||
fill_color: Some(Color::Black), |
||||
stroke_color: Some(Color::White), |
||||
stroke_width: 0u8, // Has no effect on fonts
|
||||
}) |
||||
.translate(Coord::new(175, 250)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
// use bigger/different font
|
||||
display.draw( |
||||
Font12x16::render_str("It's working-BoW!") |
||||
// Using Style here
|
||||
.with_style(Style { |
||||
fill_color: Some(Color::White), |
||||
stroke_color: Some(Color::Black), |
||||
stroke_width: 0u8, // Has no effect on fonts
|
||||
}) |
||||
.translate(Coord::new(50, 200)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
// a moving `Hello World!`
|
||||
let limit = 10; |
||||
for i in 0..limit { |
||||
println!("Moving Hello World. Loop {} from {}", (i + 1), limit); |
||||
|
||||
display.draw( |
||||
Font6x8::render_str(" Hello World! ") |
||||
.with_style(Style { |
||||
fill_color: Some(Color::White), |
||||
stroke_color: Some(Color::Black), |
||||
stroke_width: 0u8, // Has no effect on fonts
|
||||
}) |
||||
.translate(Coord::new(5 + i * 12, 50)) |
||||
.into_iter(), |
||||
); |
||||
|
||||
epd4in2.update_frame(&mut spi, &display.buffer()).unwrap(); |
||||
epd4in2 |
||||
.display_frame(&mut spi) |
||||
.expect("display frame new graphics"); |
||||
|
||||
delay.delay_ms(1_000u16); |
||||
} |
||||
|
||||
println!("Finished tests - going to sleep"); |
||||
epd4in2.sleep(&mut spi) |
||||
} |
||||
Loading…
Reference in new issue