From c1d0551d697dfc1a2e016fbbdc9364845fe8dba3 Mon Sep 17 00:00:00 2001
From: Rafael Caricio <rafael@caricio.com>
Date: Tue, 3 Sep 2019 22:47:35 +0200
Subject: [PATCH] Support drawing images to display
---
Cargo.lock | 16 +++++++++++++++
Cargo.toml | 2 ++
README.md | 1 +
card10-l0dable/Cargo.toml | 1 +
card10-l0dable/src/framebuffer/mod.rs | 21 ++++++++++++++++++++
card10-l0dable/src/framebuffer/text.rs | 4 ++--
draw-image/Cargo.toml | 16 +++++++++++++++
draw-image/README.md | 16 +++++++++++++++
draw-image/src/applewatch-160x80.raw | Bin 0 -> 25600 bytes
draw-image/src/main.rs | 26 +++++++++++++++++++++++++
10 files changed, 101 insertions(+), 2 deletions(-)
create mode 100644 draw-image/Cargo.toml
create mode 100644 draw-image/README.md
create mode 100644 draw-image/src/applewatch-160x80.raw
create mode 100644 draw-image/src/main.rs
diff --git a/Cargo.lock b/Cargo.lock
index 2e82da8f..c585c61d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -99,6 +99,7 @@ name = "card10-l0dable"
version = "0.1.1"
dependencies = [
"card10-sys 0.1.0",
+ "embedded-graphics 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@@ -161,6 +162,20 @@ dependencies = [
"volatile-register 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
+[[package]]
+name = "draw-image"
+version = "0.0.0"
+dependencies = [
+ "card10-l0dable 0.1.1",
+ "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "embedded-graphics 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "embedded-graphics"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
[[package]]
name = "env_logger"
version = "0.6.2"
@@ -442,6 +457,7 @@ dependencies = [
"checksum clang-sys 0.28.1 (registry+https://github.com/rust-lang/crates.io-index)" = "81de550971c976f176130da4b2978d3b524eaa0fd9ac31f3ceb5ae1231fb4853"
"checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
"checksum cortex-m 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3df5de9a9829f2ccb7defa8945fa020c6614cd2f6ba9b5f33db9241dcc01985e"
+"checksum embedded-graphics 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "704679bfcb66cc748ec185ae62ccd5b03311a53793372e2abf1ff9a7e9875ff7"
"checksum env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "aafcde04e90a5226a6443b7aabdb016ba2f8307c847d524724bd9b346dd1a2d3"
"checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
"checksum fxhash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c31b6d751ae2c7f11320402d34e41349dd1016f8d5d45e48c4312bc8625af50c"
diff --git a/Cargo.toml b/Cargo.toml
index 04452aca..7b1b7a03 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,11 +5,13 @@ members = [
"card10-l0dable",
"example",
"rkanoid",
+ "draw-image",
]
default-members = [
"example",
"rkanoid",
+ "draw-image",
]
[profile.release]
diff --git a/README.md b/README.md
index 6896bb87..bc8f8078 100644
--- a/README.md
+++ b/README.md
@@ -134,6 +134,7 @@ extension (e.g `example` must be renamed as `example.elf`).
| card10-l0dable | High-level crate for building l0dables |
| example | l0dable example |
| rkanoid | Arkanoid clone |
+| draw-image | Example of drawing a static image to the display |
## Misc
diff --git a/card10-l0dable/Cargo.toml b/card10-l0dable/Cargo.toml
index 96880ced..d6c27f2f 100644
--- a/card10-l0dable/Cargo.toml
+++ b/card10-l0dable/Cargo.toml
@@ -18,4 +18,5 @@ description = "make l0dables for the Card10 (CCCamp 2019) badge"
[dependencies]
card10-sys = { path = "../card10-sys", version = "^0.1" }
+embedded-graphics = "0.5.2"
diff --git a/card10-l0dable/src/framebuffer/mod.rs b/card10-l0dable/src/framebuffer/mod.rs
index 7d1d07d9..56faa3b2 100644
--- a/card10-l0dable/src/framebuffer/mod.rs
+++ b/card10-l0dable/src/framebuffer/mod.rs
@@ -3,6 +3,10 @@ use card10_sys::*;
use core::mem::{transmute, uninitialized};
use core::ops::{Index, IndexMut};
+use embedded_graphics::pixelcolor::Rgb565;
+use embedded_graphics::prelude::Pixel;
+use embedded_graphics::Drawing;
+
mod font;
pub use font::*;
mod text;
@@ -71,6 +75,23 @@ impl<'d> IndexMut<(u16, u16)> for FrameBuffer<'d> {
}
}
+impl<'d> Drawing<Rgb565> for FrameBuffer<'d> {
+ fn draw<T>(&mut self, item: T)
+ where
+ T: IntoIterator<Item = Pixel<Rgb565>>,
+ {
+ for Pixel(coord, color) in item {
+ let x = coord[0] as u16;
+ let y = coord[1] as u16;
+
+ if x >= Display::W || y >= Display::H {
+ continue;
+ }
+ self[(x, y)] = RawColor::rgb8(color.r(), color.g(), color.b());
+ }
+ }
+}
+
#[derive(Debug, Clone, Copy)]
#[repr(C)]
pub struct RawColor([u8; 2]);
diff --git a/card10-l0dable/src/framebuffer/text.rs b/card10-l0dable/src/framebuffer/text.rs
index 118e7754..cb30d1f4 100644
--- a/card10-l0dable/src/framebuffer/text.rs
+++ b/card10-l0dable/src/framebuffer/text.rs
@@ -1,6 +1,6 @@
+use super::{Font, FrameBuffer, RawColor};
+use crate::Display;
use core::fmt::Write;
-use super::{FrameBuffer, Font, RawColor};
-use crate::{Display};
pub struct TextRenderer<'a, 'd, 'f> {
pub framebuffer: &'a mut FrameBuffer<'d>,
diff --git a/draw-image/Cargo.toml b/draw-image/Cargo.toml
new file mode 100644
index 00000000..c7423842
--- /dev/null
+++ b/draw-image/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "draw-image"
+version = "0.0.0"
+authors = ["Rafael Caricio <crates.rs@caric.io>"]
+edition = "2018"
+
+[dependencies]
+card10-l0dable = { path = "../card10-l0dable" }
+embedded-graphics = { version = "0.5.2" }
+
+[build-dependencies]
+cc = "1.0"
+
+[[bin]]
+name = "draw-image"
+path = "src/main.rs"
diff --git a/draw-image/README.md b/draw-image/README.md
new file mode 100644
index 00000000..65f12dbc
--- /dev/null
+++ b/draw-image/README.md
@@ -0,0 +1,16 @@
+Draw Image
+==========
+
+Images need to be converted to a bitmap of 16BPP for inclusion with `include_bytes!()`. You can convert an image using:
+
+```
+convert image.png -flip -type truecolor -define bmp:subtype=RGB565 -depth 16 -strip image.bmp
+```
+
+then
+
+```
+tail -c $bytes image.bmp > image.raw // where $bytes is w * h * 2
+```
+
+This will remove the BMP header leaving the raw pixel data E.g 160x80 image will have 160 * 80 * 2 bytes of raw data.
\ No newline at end of file
diff --git a/draw-image/src/applewatch-160x80.raw b/draw-image/src/applewatch-160x80.raw
new file mode 100644
index 0000000000000000000000000000000000000000..824710533766f2ce8eba4b8fabf5432f0e06b006
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literal 0
HcmV?d00001
diff --git a/draw-image/src/main.rs b/draw-image/src/main.rs
new file mode 100644
index 00000000..5b377cf2
--- /dev/null
+++ b/draw-image/src/main.rs
@@ -0,0 +1,26 @@
+#![no_std]
+#![no_main]
+
+use card10_l0dable::*;
+use embedded_graphics::prelude::*;
+
+use embedded_graphics::image::Image16BPP;
+use embedded_graphics::pixelcolor::Rgb565;
+
+main!(main);
+fn main() {
+ let display = Display::open();
+ let mut framebuffer = display.framebuffer();
+
+ let image: Image16BPP<Rgb565> =
+ Image16BPP::new(include_bytes!("applewatch-160x80.raw"), 160, 80);
+ framebuffer.draw(&image);
+ framebuffer.send();
+
+ loop {
+ let buttons = Buttons::read();
+ if buttons.left_top() {
+ break;
+ }
+ }
+}
--
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