Anshorei/epd-waveshare
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Enable drawing in three colors for epd2in13

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Move from BinaryColor to TriColor:  use one Display fo drawing
This commit is contained in:
Reinier Balt
2021-05-30 14:20:02 +02:00
parent 401858c456
commit c25d9f18d3
5 changed files with 166 additions and 42 deletions
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examples/epd2in13bc.rs
+28 -25
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@@ -11,7 +11,7 @@ use embedded_hal::prelude::*;
use epd_waveshare::{
color::*,
epd2in13bc::{Display2in13bc, Epd2in13bc},
graphics::{Display, DisplayRotation},
graphics::{DisplayRotation, TriDisplay},
prelude::*,
};
use linux_embedded_hal::{
@@ -77,7 +77,7 @@ fn main() -> Result<(), std::io::Error> {
println!("Test all the rotations");
let mut display = Display2in13bc::default();
let mut display_chromatic = Display2in13bc::default();
display.clear_buffer(TriColor::White);
display.set_rotation(DisplayRotation::Rotate0);
draw_text(&mut display, "Rotation 0!", 5, 50);
@@ -91,59 +91,62 @@ fn main() -> Result<(), std::io::Error> {
display.set_rotation(DisplayRotation::Rotate270);
draw_text(&mut display, "Rotation 270!", 5, 50);
// Since we only used black and white, we can resort to updating only
// the bw-buffer of this tri-color screen
epd2in13
.update_and_display_frame(&mut spi, &display.buffer(), &mut delay)
.update_and_display_frame(&mut spi, &display.bw_buffer(), &mut delay)
.expect("display frame new graphics");
println!("First frame done. Waiting 5s");
delay.delay_ms(5000u16);
println!("Now test new graphics with default rotation:");
display.clear_buffer(Color::White);
display_chromatic.clear_buffer(Color::White);
// keep both displays on same rotation
display_chromatic.set_rotation(DisplayRotation::Rotate270);
println!("Now test new graphics with default rotation and three colors:");
display.clear_buffer(TriColor::White);
// draw a analog clock
// draw a analog clock in black
let _ = Circle::new(Point::new(64, 64), 40)
.into_styled(PrimitiveStyle::with_stroke(Black, 1))
.into_styled(PrimitiveStyle::with_stroke(TriColor::Black, 1))
.draw(&mut display);
let _ = Line::new(Point::new(64, 64), Point::new(30, 40))
.into_styled(PrimitiveStyle::with_stroke(Black, 4))
.into_styled(PrimitiveStyle::with_stroke(TriColor::Black, 4))
.draw(&mut display);
let _ = Line::new(Point::new(64, 64), Point::new(80, 40))
.into_styled(PrimitiveStyle::with_stroke(Black, 1))
.into_styled(PrimitiveStyle::with_stroke(TriColor::Black, 1))
.draw(&mut display);
// draw text white on Red background by using the chromatic buffer
// draw text white on chromatic (red or yellow) background
let _ = Text::new("It's working-WoB!", Point::new(90, 10))
.into_styled(text_style!(
font = Font6x8,
text_color = White,
background_color = Black
text_color = TriColor::White,
background_color = TriColor::Chromatic
))
.draw(&mut display_chromatic);
.draw(&mut display);
// use bigger/different font
let _ = Text::new("It's working-WoB!", Point::new(90, 40))
.into_styled(text_style!(
font = Font12x16,
text_color = White,
background_color = Black
text_color = TriColor::White,
background_color = TriColor::Chromatic
))
.draw(&mut display_chromatic);
.draw(&mut display);
epd2in13.update_color_frame(&mut spi, &display.buffer(), &display_chromatic.buffer())?;
// we used three colors, so we need to update both bw-buffer and chromatic-buffer
epd2in13.update_color_frame(&mut spi, display.bw_buffer(), display.chromatic_buffer())?;
epd2in13
.display_frame(&mut spi, &mut delay)
.expect("display frame new graphics");
println!("Second frame done. Waiting 5s");
delay.delay_ms(5000u16);
display.clear_buffer(Color::White);
display_chromatic.clear_buffer(Color::White);
epd2in13.update_color_frame(&mut spi, &display.buffer(), &display_chromatic.buffer())?;
// clear both bw buffer and chromatic buffer
display.clear_buffer(TriColor::White);
epd2in13.update_color_frame(&mut spi, display.bw_buffer(), display.chromatic_buffer())?;
epd2in13.display_frame(&mut spi, &mut delay)?;
println!("Finished tests - going to sleep");
@@ -154,8 +157,8 @@ fn draw_text(display: &mut Display2in13bc, text: &str, x: i32, y: i32) {
let _ = Text::new(text, Point::new(x, y))
.into_styled(text_style!(
font = Font6x8,
text_color = Black,
background_color = White
text_color = TriColor::Black,
background_color = TriColor::White
))
.draw(display);
}