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ECSS and CCSDS Spacepackets
======

This package contains generic implementations for various CCSDS
(Consultative Committee for Space Data Systems) and ECSS
(European Cooperation for Space Standardization) packet standards.

Currently, this includes the following components:

- Space Packet implementation according to
  [CCSDS Blue Book 133.0-B-2](https://public.ccsds.org/Pubs/133x0b2e1.pdf)
- CCSDS File Delivery Protocol (CFDP) packet implementations according to
  [CCSDS Blue Book 727.0-B-5](https://public.ccsds.org/Pubs/727x0b5.pdf)
- PUS Telecommand and PUS Telemetry implementation according to the
  [ECSS-E-ST-70-41C standard](https://ecss.nl/standard/ecss-e-st-70-41c-space-engineering-telemetry-and-telecommand-packet-utilization-15-april-2016/).
- CUC (CCSDS Unsegmented Time Code) implementation according to
  [CCSDS 301.0-B-4 3.2](https://public.ccsds.org/Pubs/301x0b4e1.pdf)
- CDS (CCSDS Day Segmented Time Code) implementation according to
  [CCSDS 301.0-B-4 3.3](https://public.ccsds.org/Pubs/301x0b4e1.pdf)
- Some helper types to support ASCII timecodes as specified in
  [CCSDS 301.0-B-4 3.5](https://public.ccsds.org/Pubs/301x0b4e1.pdf)

# Features

`spacepackets` supports various runtime environments and is also suitable for `no_std` environments.

## Default features

 - [`std`](https://doc.rust-lang.org/std/): Enables functionality relying on the standard library.
 - [`alloc`](https://doc.rust-lang.org/alloc/): Enables features which operate on containers
   like [`alloc::vec::Vec`](https://doc.rust-lang.org/beta/alloc/vec/struct.Vec.html).
   Enabled by the `std` feature.

## Optional Features

 - [`serde`](https://serde.rs/): Adds `serde` support for most types by adding `Serialize` and `Deserialize` `derive`s
 - [`chrono`](https://crates.io/crates/chrono): Add basic support for the `chrono` time library.
 - [`timelib`](https://crates.io/crates/time): Add basic support for the `time` time library.
 - [`defmt`](https://defmt.ferrous-systems.com/): Add support for the `defmt` by adding the
   [`defmt::Format`](https://defmt.ferrous-systems.com/format) derive on many types.

# Examples

You can check the [documentation](https://docs.rs/spacepackets) of individual modules for various
usage examples.

# Coverage

Coverage can be generated using [`llvm-cov`](https://github.com/taiki-e/cargo-llvm-cov). If you have not done so
already, install the tool:

```sh
cargo +stable install cargo-llvm-cov --locked
```

After this, you can run `cargo llvm-cov nextest` to run all the tests and display coverage.

# Miri

You can run the [`miri`](https://github.com/rust-lang/miri) tool on this library to check for
undefined behaviour (UB). This library does not use use any `unsafe` code blocks, but `miri` could
still catch UB from used libraries.

```sh
cargo +nightly miri nextest run --all-features
```
