### Run Embedded Application

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Compiles and runs the 'hello.rs' example application using probe-rs.

```console
$ cargo rb hello
    Finished `dev` profile [optimized + debuginfo] target(s) in 0.01s
     Running `probe-rs run --chip nrf52840_xxaa --log-format=oneline target/thumbv6m-none-eabi/debug/hello`
      Erasing ✔ 100% [####################]   8.00 KiB @  15.79 KiB/s (took 1s)
  Programming ✔ 100% [####################]   8.00 KiB @  13.19 KiB/s (took 1s)                                                                                                                        Finished in 1.11s
Hello, world!

$ echo $?
0
```

--------------------------------

### Memory Configuration Example

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

An example of a memory configuration file (memory.x) used for linking embedded projects.

```text
MEMORY
{
  FLASH : ORIGIN = 0x00000000, LENGTH = 1024K
  RAM   : ORIGIN = 0x20000000, LENGTH = 256K
}
```

--------------------------------

### Install cargo-generate

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Installs cargo-generate, a tool used to scaffold projects from templates.

```bash
cargo install cargo-generate
```

--------------------------------

### Install flip-link

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Installs the flip-link tool, a dependency for managing embedded project linking.

```bash
cargo install flip-link
```

--------------------------------

### Initialize Project with app-template

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Generates a new embedded project using the app-template from GitHub.

```bash
cargo generate \
    --git https://github.com/knurling-rs/app-template \
    --branch main \
    --name my-app
```

--------------------------------

### Configure Compilation Target

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Sets the compilation target for the project in .cargo/config.toml. This example targets Cortex-M4F.

```toml
# .cargo/config.toml
[build]
target = "thumbv7em-none-eabihf" # Cortex-M4F (with FPU)
```

--------------------------------

### Configure probe-rs Chip

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Sets the target chip for probe-rs in the .cargo/config.toml file. This example uses nRF52840_xxAA.

```toml
# .cargo/config.toml
runner = ["probe-rs", "run", "--chip", "nRF52840_xxAA", "--log-format=oneline"]
```

--------------------------------

### Import HAL in Source

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Imports the specified Hardware Abstraction Layer (HAL) crate in the main source file (src/lib.rs).

```rust
// my-app/src/lib.rs
use nrf52840_hal as _; // memory layout
```

--------------------------------

### Add Target Architecture

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Adds the specified compilation target architecture to rustup.

```bash
rustup target add thumbv7em-none-eabihf
```

--------------------------------

### Run Unit Tests with Cargo

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Executes unit tests for the library crate using the `cargo test --lib` command. This command compiles the library and runs tests, including those for private APIs.

```console
$ cargo test --lib
   Compiling example v0.1.0 (./knurling-rs/example)
    Finished `test` profile [optimized + debuginfo] target(s) in 0.15s
     Running unittests src/lib.rs (target/thumbv6m-none-eabi/debug/deps/example-2b0d0e25d141bf57)
      Erasing ✔ 100% [####################]   8.00 KiB @  15.99 KiB/s (took 1s)
  Programming ✔ 100% [####################]   8.00 KiB @  13.33 KiB/s (took 1s)                                                                                                                        Finished in 1.10s
(1/1) running `it_works`...
all tests passed!
```

--------------------------------

### Configure rust-analyzer Linked Projects

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Adds a configuration to `.vscode/settings.json` to enable rust-analyzer to work transparently across workspaces by linking project Cargo.toml files.

```json
{
    "rust-analyzer.linkedProjects": [
        "Cargo.toml",
        "firmware/Cargo.toml"
    ]
}
```

--------------------------------

### Add HAL Dependency

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Adds the nrf52840-hal crate as a dependency in Cargo.toml for the nRF52840 microcontroller.

```toml
# Cargo.toml
[dependencies]
nrf52840-hal = "0.14.0"
```

--------------------------------

### Run Integration Tests with Cargo

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Executes integration tests located in the `tests` directory using the `cargo test --test <test_file_name>` command. The argument must match the test file name.

```console
$ cargo test --test integration
   Compiling example v0.1.0 (./knurling-rs/example)
    Finished `test` profile [optimized + debuginfo] target(s) in 0.10s
     Running tests/integration.rs (target/thumbv6m-none-eabi/debug/deps/integration-aaaff41151f6a722)
      Erasing ✔ 100% [####################]   8.00 KiB @  16.03 KiB/s (took 0s)
  Programming ✔ 100% [####################]   8.00 KiB @  13.19 KiB/s (took 1s)                                                                                                                        Finished in 1.11s
(1/1) running `it_works`...
all tests passed!
```

--------------------------------

### Adjust RTT Buffer Size

Source: https://github.com/knurling-rs/app-template/blob/main/README.md

Sets the DEFMT_RTT_BUFFER_SIZE environment variable to reduce the device memory buffer size if memory overflow occurs.

```console
$ DEFMT_RTT_BUFFER_SIZE=64 cargo rb hello
```

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