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Update flake.nix and README.md for Raspberry Pi Pico W support

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This commit is contained in:
Kyle J. Turpin
2026-06-04 13:44:22 -05:00
parent b5977d64ed
commit 8543d79960
2 changed files with 8 additions and 25 deletions
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README.md
+6 -14
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@@ -19,7 +19,7 @@ direnv allow
When you enter the devShell (via `direnv allow` or `nix develop`), the following happens automatically:
✓ **Git Repository**: Initializes `.git` if not present
✓ **Rust Targets**: Automatically adds common embedded Rust targets (ARM Cortex-M, RISC-V)
✓ **Rust Targets**: Automatically adds the RP2040 (Pico W) target: `thumbv6m-none-eabi`
✓ **Cargo Paths**: Sets up `$HOME/.cargo/bin` in PATH for cargo-installed binaries
✓ **Welcome Banner**: Displays available tools and quick commands
@@ -35,16 +35,11 @@ cargo build
## Embedded Rust Support
The devShell automatically installs common embedded Rust targets via `rustup`:
The devShell automatically installs the Raspberry Pi Pico W target via `rustup`:
| Target | Platform | Use Case |
|--------|----------|----------|
| `thumbv6m-none-eabi` | ARM Cortex-M0/M0+ | RP2040 (Pico) |
| `thumbv7em-none-eabihf` | ARM Cortex-M4F/M7F | STM32, nRF52840 |
| `riscv32imc-unknown-none-elf` | RISC-V 32-bit | ESP32-C3 (basic) |
| `riscv32imac-unknown-none-elf` | RISC-V 32-bit (atomic) | ESP32-C3 (advanced) |
**Note:** ESP32 Xtensa targets require espup or custom toolchains (see [esp-rs](https://github.com/esp-rs)).
| `thumbv6m-none-eabi` | ARM Cortex-M0/M0+ | RP2040 (Pico W) |
## Flatpak Packaging
@@ -84,14 +79,11 @@ flatpak run org.example.rustdevshell
| **rustfmt** | Rust code formatter |
| **rust-analyzer** | Language server for IDE integration |
| **rust-src** | Rust source code (for tools like rust-analyzer) |
| **probe-rs** | Embedded debugger/flasher for ARM targets |
| **espflash** | Flashing tool for ESP32 boards |
| **openocd** | JTAG/SWD debugger for ARM and other targets |
| **probe-rs** | Embedded debugger/flasher |
| **openocd** | JTAG/SWD debugger |
| **minicom** | Serial terminal for device output |
| **elf2uf2-rs** | Convert ELF to UF2 format (RP2040) |
| **picotool** | Pico-specific firmware operations |
| **avrdude** | AVR microcontroller programmer |
| **ravedude** | Rapid AVR development utility |
## Testing & Development Features
@@ -114,7 +106,7 @@ cargo clippy
cargo fmt
# Build for embedded target
cargo build --target thumbv7em-none-eabihf --release
cargo build --target thumbv6m-none-eabi --release
```
## Project Layout