Attempt to library-ify the crate

.vscode/settings.json

@@ -4,4 +4,5 @@
     "workbench.editor.customLabels.patterns": {
         "**/mod.rs": "mod | ${dirname}"
       },
+    "rust-analyzer.cargo.target": "thumbv6m-none-eabi"
 }

src/graphics.rs

@@ -1,4 +1,6 @@
-use crate::sprite::{Sprite, SpriteAtlas};
+mod sprite;
+
+use sprite::*;
 
 pub struct GraphicsBuf {
     buffer: [u8; 8192],

src/graphics/sprite.rs

@@ -1,6 +1,6 @@
-static SPRITES_COMPRESSED:[u8;16384] = *include_bytes!("../sprites/sprites_tex.bin");
+static SPRITES_COMPRESSED: [u8; 16384] = *include_bytes!("../../sprites/sprites_tex.bin");
 
-const ATLAS_WIDTH:usize = 256;
+const ATLAS_WIDTH: usize = 256;
 
 #[derive(Copy, Clone)]
 pub struct Sprite {
@@ -47,9 +47,8 @@ pub struct SpriteAtlas {
 }
 
 impl SpriteAtlas {
-    pub fn new(from_bin:&[u8]) -> SpriteAtlas {
+    pub fn new(from_bin: &[u8]) -> SpriteAtlas {
-
+        if from_bin.len() > 256 * 4 {
-        if from_bin.len() > 256*4 {
             panic!("SpriteAtlas::new() - from_bin is too large");
         }
 
@@ -67,14 +66,15 @@ impl SpriteAtlas {
             entries[i].height = chunk[3];
         });
 
-        SpriteAtlas {
+        SpriteAtlas { entries: entries }
-            entries: entries,
-        }
     }
 
-    pub fn draw_textfield(&self,
+    pub fn draw_textfield(
-        x: u8, y: u8,
+        &self,
-        width: u8, height: u8,
+        x: u8,
+        y: u8,
+        width: u8,
+        height: u8,
         string: &str,
         gfx_buf: &mut [u8; 8192],
     ) {
@@ -89,32 +89,28 @@ impl SpriteAtlas {
                 cur_x = x;
                 cur_y += 8;
             }
-            
+
             self.draw_string(cur_x, cur_y, word, gfx_buf);
             cur_x += word_width as u8 + 4;
         }
     }
 
-    pub fn draw_string(&self,
+    pub fn draw_string(&self, x: u8, y: u8, string: &str, gfx_buf: &mut [u8; 8192]) {
-        x: u8, y: u8,
-        string: &str,
-        gfx_buf: &mut [u8; 8192],
-    ) {
         let mut x = x;
-    
+
         for c in string.chars() {
             if c == ' ' {
                 x += 4;
                 continue;
             }
-    
+
             let sprite_index = c as usize - 33;
             self.draw_sprite(sprite_index, x, y, SpriteFlip::None, gfx_buf);
             x += self.entries[sprite_index].width + 1;
         }
     }
 
-    fn get_str_pixel_width(&self, str:&str) -> usize {
+    fn get_str_pixel_width(&self, str: &str) -> usize {
         let mut width = 0;
 
         for c in str.chars() {
@@ -130,12 +126,14 @@ impl SpriteAtlas {
         width
     }
 
-    pub fn draw_sprite(&self,
+    pub fn draw_sprite(
+        &self,
         sprite_index: usize,
-        x: u8, y:u8,
+        x: u8,
+        y: u8,
         flip: SpriteFlip,
-        gfx_buf: &mut [u8; 8192]) {
+        gfx_buf: &mut [u8; 8192],
-
+    ) {
         let entry = self.entries[sprite_index];
 
         for sprite_y in 0..entry.height {
@@ -152,23 +150,30 @@ impl SpriteAtlas {
 
                 let px = match flip {
                     SpriteFlip::None => self.px_for_entry(sprite_index, sprite_x, sprite_y),
-                    SpriteFlip::Horizontal => self.px_for_entry(sprite_index, entry.width - sprite_x - 1, sprite_y),
+                    SpriteFlip::Horizontal => {
-                    SpriteFlip::Vertical => self.px_for_entry(sprite_index, sprite_x, entry.height - sprite_y - 1),
+                        self.px_for_entry(sprite_index, entry.width - sprite_x - 1, sprite_y)
-                    SpriteFlip::Both => self.px_for_entry(sprite_index, entry.width - sprite_x - 1, entry.height - sprite_y - 1),
+                    }
+                    SpriteFlip::Vertical => {
+                        self.px_for_entry(sprite_index, sprite_x, entry.height - sprite_y - 1)
+                    }
+                    SpriteFlip::Both => self.px_for_entry(
+                        sprite_index,
+                        entry.width - sprite_x - 1,
+                        entry.height - sprite_y - 1,
+                    ),
                 };
 
                 if px == 3 {
                     continue;
                 }
 
-                let target_index = (tgt_y as usize)*128 + tgt_x as usize;
+                let target_index = (tgt_y as usize) * 128 + tgt_x as usize;
                 gfx_buf[target_index] = px;
             }
         }
-
     }
 
-    pub fn px_for_entry(&self, entry_index:usize, x:u8, y:u8) -> u8 {
+    pub fn px_for_entry(&self, entry_index: usize, x: u8, y: u8) -> u8 {
         let entry = self.entries[entry_index];
 
         // input is uncompressed coordinate system
@@ -181,7 +186,7 @@ impl SpriteAtlas {
         // however as the compressed tiles are 2bpp (4px per byte)
         // we need to find the byte that contains the pixel we're looking for
 
-        let sprite_row_byte_index = (y as usize)*ATLAS_WIDTH/4 + (x as usize)/4;
+        let sprite_row_byte_index = (y as usize) * ATLAS_WIDTH / 4 + (x as usize) / 4;
         let sprite_row_byte = SPRITES_COMPRESSED[sprite_row_byte_index];
 
         let x_remain = x % 4;
@@ -196,9 +201,8 @@ impl SpriteAtlas {
         // (sprite_row_byte & (0b1100_0000 >> 4)) >> 2
         // etc
 
-        let px_byte = (sprite_row_byte & (0b1100_0000 >> (x_remain*2))) >> (6 - x_remain*2);
+        let px_byte = (sprite_row_byte & (0b1100_0000 >> (x_remain * 2))) >> (6 - x_remain * 2);
 
         px_byte
-
     }
-}
+}

src/lib.rs

@@ -0,0 +1,4 @@
+#![no_std]
+
+pub mod graphics;
+pub mod ssh1106;

src/main.rs

@@ -12,13 +12,6 @@ use rp2040_hal as hal;
 use defmt_rtt as _;
 use panic_probe as _;
 
-mod graphics;
-mod sprite;
-mod ssh1106;
-
-use crate::graphics::*;
-use crate::ssh1106::*;
-
 #[link_section = ".boot_loader"]
 #[used]
 pub static BOOT_LOADER: [u8; 256] = rp2040_boot2::BOOT_LOADER_W25Q080;
@@ -72,10 +65,10 @@ fn main() -> ! {
     let mut led_pin = pins.gpio25.into_push_pull_output();
     led_pin.set_high().unwrap();
 
-    let ssh1106_dev = SSH1106Dev::new(&mut delay, &mut i2c);
+    let ssh1106_dev = sh1106_pico_rs::ssh1106::SSH1106Dev::new(&mut delay, &mut i2c);
     println!("SSH1106 initialized.");
 
-    let mut gfx_buf = GraphicsBuf::new();
+    let mut gfx_buf = sh1106_pico_rs::graphics::GraphicsBuf::new();
 
     loop {
         gfx_buf.clear();