69495f8a40
Summary: - Added two new Rust example applications to the documentation: - `hello` example showcasing JSON serialization/deserialization, async runtime usage, and C interoperability in a NuttX environment - `slint` example demonstrating the integration of the Slint UI framework with NuttX's framebuffer and touchscreen devices for creating GUI applications in Rust - Each example includes detailed explanations of key features and how they are implemented using Rust's modern language capabilities Impact: - Enhances the documentation for Rust development within NuttX, providing clear and practical examples for developers - Facilitates easier adoption of Rust for new projects by demonstrating how to leverage its features while maintaining compatibility with existing NuttX infrastructure - No changes to the core NuttX system; the additions are entirely within the documentation and examples directory Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
30 lines
1.2 KiB
ReStructuredText
30 lines
1.2 KiB
ReStructuredText
==================================
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`hello` Example in Rust
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==================================
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This example demonstrates how to use Rust's powerful features in a NuttX environment, including:
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- **JSON Serialization/Deserialization**: Using the popular `serde` and `serde_json` crates to work with JSON data
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- **Async Runtime**: Demonstrates basic usage of the `tokio` async runtime
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- **C Interoperability**: Shows how to expose Rust functions to be called from C code
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Key Features
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------------
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1. JSON Handling
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- Defines a `Person` struct with `Serialize` and `Deserialize` traits
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- Serializes Rust structs to JSON strings
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- Deserializes JSON strings into Rust structs
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- Demonstrates pretty-printing JSON
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2. Async Runtime
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- Initializes a single-threaded `tokio` runtime
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- Runs a simple async task that prints a message
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3. C Interop
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- Exports `hello_rust_cargo_main` function with `#[no_mangle]` for C calling
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- Uses `extern "C"` to define the C ABI
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The example shows how Rust's modern features can be used in embedded systems while maintaining compatibility with C-based systems.
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This example serves as a foundation for building more complex Rust applications in NuttX that need to handle JSON data and async operations.
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