feat(rust-wasm): add wokwi_chip_ll crate

Author: urish

rust-wasm/Dockerfile

@@ -7,6 +7,7 @@ RUN chown nobody /project/src/lib.rs && chmod o+w /project
 
 WORKDIR /project
 USER nobody
+ENV HOME=/tmp
 RUN cargo build --target wasm32-unknown-unknown --release
 
 # Wokwi builder configuration:

rust-wasm/project/Cargo.lock

@@ -3,9 +3,8 @@ name = "chip-rust"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
+wokwi_chip_ll = "0.1.0"
 
 [lib]
 crate-type = ["cdylib"]

rust-wasm/project/Cargo.toml

@@ -1,47 +1,8 @@
-use std::{ffi::{c_void, CString}, os::raw::c_char};
+use std::ffi::{c_void, CString};
 
-// --- API Declaration ---
-
-type PinId = i32;
-
-#[repr(C)]
-pub struct WatchConfig {
-    user_data: *const c_void,
-    edge: u32,
-    pin_change: *const c_void,
-}
-
-/* Just a stub to specify the Chip API version */
-#[no_mangle]
-pub unsafe extern "C" fn __wokwi_api_version_1() -> u32 { return 0; }
-
-extern "C" {
-    fn pinInit(name: *const c_char, mode: u32) -> PinId;
-    fn pinRead(pin: PinId) -> u32;
-    fn pinWrite(pin: PinId, value: u32);
-    fn pinWatch(pin: PinId, watch_config: *const WatchConfig) -> bool;
-    fn debugPrint(message: *const c_char);
-}
-
-/* Pin values */
-const LOW: u32 = 0;
-const HIGH: u32 = 1;
-
-/* Pin modes */
-const INPUT: u32 = 0;
-const OUTPUT: u32 = 1;
-const INPUT_PULLUP: u32 = 2;
-const INPUT_PULLDOWN: u32 = 3;
-const ANALOG: u32 = 4;
-const OUTPUT_LOW: u32 = 16;
-const OUTPUT_HIGH: u32 = 16;
-
-/* Pin edges */
-const RISING: u32 = 1; 
-const FALLING: u32 = 2;
-const BOTH: u32 = 3;
-
-/// --- Implementation ---
+use wokwi_chip_ll::{
+    debugPrint, pinInit, pinWatch, pinWrite, PinId, WatchConfig, BOTH, HIGH, INPUT, LOW, OUTPUT,
+};
 
 struct Chip {
     pin_in: PinId,
@@ -59,7 +20,7 @@ pub unsafe fn on_pin_change(user_data: *const c_void, _pin: PinId, value: u32) {
 
 #[no_mangle]
 pub unsafe extern "C" fn chipInit() {
-    debugPrint(CString::new("Hello rust!").unwrap().into_raw());
+    debugPrint(CString::new("Hello rusty!").unwrap().into_raw());
 
     let chip = Chip {
         pin_in: pinInit(CString::new("IN").unwrap().into_raw(), INPUT),