feat: create crc crate

.cargo/config.toml

@@ -1,11 +1,15 @@
 [build]
-target = "thumbv6m-none-eabi"
+# target = "thumbv6m-none-eabi"
+
+[test]
+target = "x86_64-unknown-linux-gnu"
 
 [target.thumbv6m-none-eabi]
 runner = 'probe-rs run --chip STM32L053R8'
 
 
 [alias]
+target = "thumbv6m-none-eabi"
 cflash = "flash --chip STM32L053R8"
 
 [env]

Cargo.lock

@@ -92,6 +92,10 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "crc"
+version = "0.1.0"
+
 [[package]]
 name = "critical-section"
 version = "1.2.0"

Cargo.toml

@@ -17,3 +17,6 @@ panic-probe = { version = "0.3", features = ["print-defmt"] }
 
 [profile.release]
 debug = "full" # those are not on the board
+
+[workspace]
+members = ["", "crates/crc"]

crates/crc/.gitignore

@@ -0,0 +1 @@
+/target

crates/crc/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "crc"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

crates/crc/src/crc_dev.rs

@@ -0,0 +1,9 @@
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        assert_eq!(2 + 2, 4);
+    }
+}

crates/crc/src/lib.rs

@@ -0,0 +1,14 @@
+mod crc_32;
+pub use crc_32::*;
+
+// for testing purposes
+mod crc_dev;
+pub use crc_dev::*;
+
+pub trait Crc {
+    type Input: ?Sized;
+    type Checksum: Eq;
+    const CHECKSUM_LEN: usize;
+
+    fn process(data: &Self::Input) -> Self::Checksum;
+}

scripts/flash.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+# I'm using a bash script because if i set the target in .cargo/config.toml 
+# i can't build for x86_64 anymore, which means I can't run the unit tests.
+TARGET="thumbv6m-none-eabi"
+cargo build --target $TARGET
+cargo run --target $TARGET