Update dependencies and enhance README for RP2040 support

.gitignore

@@ -1,5 +1,4 @@
 /target
-Cargo.lock
 **/*.rs.bk
 .direnv
 .envrc

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 [dependencies]
 embassy-executor = { version = "0.7.0", features = ["task-arena-size-32768", "arch-cortex-m", "executor-thread", "executor-interrupt"] }
 embassy-time = { version = "0.4.0", features = ["generic-queue-8"] }
-embassy-rp = { version = "0.3.0", features = ["defmt", "unstable-pac", "time-driver", "critical-section-impl"] }
+embassy-rp = { version = "0.3.0", features = ["defmt", "unstable-pac", "time-driver", "critical-section-impl", "rp2040"] }
 embassy-net = { version = "0.6.0", features = ["defmt", "tcp", "udp", "dhcpv4", "medium-ethernet"] }
 embassy-sync = { version = "0.6.1" }
 embassy-usb = { version = "0.4.0" }

README.md

@@ -84,6 +84,9 @@ flatpak run org.example.rustdevshell
 | **minicom** | Serial terminal for device output |
 | **elf2uf2-rs** | Convert ELF to UF2 format (RP2040) |
 | **picotool** | Pico-specific firmware operations |
+| **cargo-binutils** | LLVM tools for size and object analysis |
+| **flip-link** | Stack overflow protection for embedded |
+| **tea** | Gitea CLI for repository management |
 
 ## Testing & Development Features
 
@@ -107,6 +110,9 @@ cargo fmt
 
 # Build for embedded target
 cargo build --target thumbv6m-none-eabi --release
+
+# Analyze binary size
+cargo size --target thumbv6m-none-eabi --release
 ```
 
 ## Project Layout

flake.nix

@@ -51,6 +51,10 @@
               cargo
               rustfmt
               rust-src
+              rust-std
+            ]
+            ++ [
+              targets.thumbv6m-none-eabi.latest.rust-std
             ]
           );
       };
@@ -75,9 +79,12 @@
               probe-rs-tools
               openocd
               minicom
+              cargo-binutils
+              flip-link
               # RP2040 UF2 workflows
               elf2uf2-rs
               picotool
+              tea
               pre-commit
             ];
 
@@ -101,7 +108,7 @@
                 rustup target add thumbv6m-none-eabi       >/dev/null 2>&1 || true  # Cortex-M0/M0+ (RP2040)
               fi
               echo "[rust-template] Welcome to the Rust dev shell!"
-              echo "Tools: cargo, rustc, clippy, rustfmt, rust-analyzer, probe-rs, openocd, minicom, elf2uf2-rs, picotool"
+              echo "Tools: cargo, rustc, clippy, rustfmt, rust-analyzer, probe-rs, openocd, minicom, elf2uf2-rs, picotool, cargo-binutils, flip-link, tea"
               echo "Run 'cargo build' to build, or 'nix run .#dev-helper' for a tool summary."
               echo "See README.md for usage."
             '';
@@ -118,6 +125,7 @@
             version = "0.1.0";
             src = ./.;
             cargoLock.lockFile = ./Cargo.lock;
+            meta.mainProgram = "rusty-dog";
           };
 
           devHelper = pkgs.writeShellScriptBin "dev-helper" ''