Embassy RP2040 template

This is a WIP.

# Install rustup and probe-rs
$ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
$ curl -LsSf https://github.com/probe-rs/probe-rs/releases/latest/download/probe-rs-tools-installer.sh | sh

# Install utilities
$ cargo install cargo-generate
$ cargo install elf2uf2-rs

# Get this template and generate a new project
$ git clone https://github.com/bus710/embassy-rp2040-template.git
$ cargo generate --path ./embassy-rp2040-template/

🤷   Project Name: test-a
🔧   Destination: test-a ...
🔧   project-name: test-a ...
🔧   Generating template ...
✔ 🤷   USB Support · false
✔ 🤷   Network Support · false
Memory Config
✔ 🤷   System Flash Size in KiB · 16384
✔ 🤷   Flash Reserved for Storage in KiB · 256
[ 1/16]   Done: .cargo/config.toml
[ 2/16]   Done: .cargo
[ 3/16]   Done: .gitignore
[ 4/16]   Done: .vscode/.gitignore
[ 5/16]   Done: .vscode/extensions.json
[ 6/16]   Done: .vscode/settings.json
[ 7/16]   Done: .vscode
[ 8/16]   Done: Cargo.lock
[ 9/16]   Done: Cargo.toml
[10/16]   Done: LICENSE
[11/16]   Done: build.rs
[12/16]   Ignored: memory.rhai
[13/16]   Done: memory.x
[14/16]   Done: rust-toolchain.toml
[15/16]   Done: src/main.rs
[16/16]   Done: src
🔧   Moving generated files into: `test-a`...
💡   Initializing a fresh Git repository
✨   Done! New project created test-a

# Build
$ cd test-a
$ cargo build --release

# Update the .cargo/cargo.toml to select either probe-rs or elf2uf2-rs
# Run this command - for the elf2uf2-rs, make sure the target board is in the drive mode
$ cargo run --bin test-a --release 

To update the versions

Embassy-rs libraries' version can be found in the repo. Each version may vary. When the executor's version is 0.7.0, the other libraries can be 0.4.0.

If you see there is any error even after all the dependencies got updated, the toolchain file can be used to point something older version of rust toolchain.