Update ECSS code

2024-03-29 14:05:18 +01:00
22 changed files with 31 additions and 111 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -8,8 +8,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).

 # [unreleased]

-# [v0.11.0-rc.1] 2024-04-03
-
 Major API changes for the time API. If you are using the time API, it is strongly recommended
 to check all the API changes in the **Changed** chapter.

@ -26,14 +24,9 @@ to check all the API changes in the **Changed** chapter.
 - Added basic support conversions to the `time` library. Introduce new `chrono` and `timelib`
  feature gate.
 - Added `CcsdsTimeProvider::timelib_date_time`.
- Optional support for `defmt` by adding optional `defmt::Format` derives for common types.

 ## Changed

- `PusTcCreator::new_simple` now expects a valid slice for the source data instead of an optional
-  slice. For telecommands without application data, `&[]` can be passed.
- `PusTmSecondaryHeader` constructors now expects a valid slice for the time stamp instead of an
-  optional slice.
 - Renamed `CcsdsTimeProvider::date_time` to `CcsdsTimeProvider::chrono_date_time`
 - Renamed `CcsdsTimeCodes` to `CcsdsTimeCode`
 - Renamed `cds::TimeProvider` to `cds::CdsTime`
--- a/Cargo.toml
+++ b/Cargo.toml
@ -1,6 +1,6 @@
 [package]
 name = "spacepackets"
-version = "0.11.0-rc.1"
+version = "0.11.0-rc.0"
 edition = "2021"
 rust-version = "1.61"
 authors = ["Robin Mueller <muellerr@irs.uni-stuttgart.de>"]
@ -48,10 +48,6 @@ optional = true
 version = "0.2"
 default-features = false

-[dependencies.defmt]
-version = "0.3"
-optional = true
-
 [dev-dependencies]
 postcard = "1"
 chrono = "0.4"
@ -63,8 +59,7 @@ serde = ["dep:serde", "chrono/serde"]
 alloc = ["postcard/alloc", "chrono/alloc"]
 chrono = ["dep:chrono"]
 timelib = ["dep:time"]
-defmt = ["dep:defmt"]

 [package.metadata.docs.rs]
 all-features = true
-rustdoc-args = ["--cfg", "docs_rs", "--generate-link-to-definition"]
+rustdoc-args = ["--cfg", "docsrs", "--generate-link-to-definition"]
--- a/README.md
+++ b/README.md
@ -45,8 +45,6 @@ deserializing them with an appropriate `serde` provider like
 - [`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

--- a/release-checklist.md
+++ b/release-checklist.md
@ -4,11 +4,11 @@ Checklist for new releases
 # Pre-Release

 1. Make sure any new modules are documented sufficiently enough and check docs with
-   `cargo +nightly doc --all-features --config 'build.rustdocflags=["--cfg", "docs_rs"]' --open`.
+   `cargo +nightly doc --all-features --config 'build.rustdocflags=["--cfg", "docsrs"]' --open`.
 2. Bump version specifier in `Cargo.toml`.
 3. Update `CHANGELOG.md`: Convert `unreleased` section into version section with date and add new
   `unreleased` section.
-4. Run `cargo test --all-features` or `cargo nextest r --all-features`.
+4. Run `cargo test --all-features`.
 5. Run `cargo fmt` and `cargo clippy`. Check `cargo msrv` against MSRV in `Cargo.toml`.
 6. Wait for CI/CD results for EGit and Github. These also check cross-compilation for bare-metal
   targets.
--- a/src/cfdp/lv.rs
+++ b/src/cfdp/lv.rs
@ -20,7 +20,6 @@ pub const MIN_LV_LEN: usize = 1;
 ///    this will be the lifetime of that data reference.
 #[derive(Debug, Copy, Clone, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct Lv<'data> {
    data: &'data [u8],
    // If the LV was generated from a raw bytestream, this will contain the start of the
--- a/src/cfdp/mod.rs
+++ b/src/cfdp/mod.rs
@ -18,7 +18,6 @@ pub const CFDP_VERSION_2: u8 = 0b001;

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum PduType {
    FileDirective = 0,
@ -27,7 +26,6 @@ pub enum PduType {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum Direction {
    TowardsReceiver = 0,
@ -36,7 +34,6 @@ pub enum Direction {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum TransmissionMode {
    Acknowledged = 0,
@ -45,7 +42,6 @@ pub enum TransmissionMode {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum CrcFlag {
    NoCrc = 0,
@ -73,7 +69,6 @@ impl From<CrcFlag> for bool {
 /// Always 0 and ignored for File Directive PDUs (CCSDS 727.0-B-5 P.75)
 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum SegmentMetadataFlag {
    NotPresent = 0,
@ -83,7 +78,6 @@ pub enum SegmentMetadataFlag {
 /// Always 0 and ignored for File Directive PDUs (CCSDS 727.0-B-5 P.75)
 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum SegmentationControl {
    NoRecordBoundaryPreservation = 0,
@ -92,7 +86,6 @@ pub enum SegmentationControl {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum FaultHandlerCode {
    NoticeOfCancellation = 0b0001,
@ -103,7 +96,6 @@ pub enum FaultHandlerCode {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum ConditionCode {
    /// This is not an error condition for which a faulty handler override can be specified
@ -126,7 +118,6 @@ pub enum ConditionCode {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum LargeFileFlag {
    /// 32 bit maximum file size and FSS size
@ -138,7 +129,6 @@ pub enum LargeFileFlag {
 /// Transaction status for the ACK PDU field according to chapter 5.2.4 of the CFDP standard.
 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum TransactionStatus {
    /// Transaction is not currently active and the CFDP implementation does not retain a
@ -156,7 +146,6 @@ pub enum TransactionStatus {
 /// [SANA Checksum Types registry](https://sanaregistry.org/r/checksum_identifiers/)
 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum ChecksumType {
    /// Modular legacy checksum
@ -178,7 +167,6 @@ pub const NULL_CHECKSUM_U32: [u8; 4] = [0; 4];

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum TlvLvError {
    DataTooLarge(usize),
    ByteConversion(ByteConversionError),
--- a/src/cfdp/pdu/ack.rs
+++ b/src/cfdp/pdu/ack.rs
@ -15,7 +15,6 @@ use serde::{Deserialize, Serialize};
 /// For more information, refer to CFDP chapter 5.2.4.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct AckPdu {
    pdu_header: PduHeader,
    directive_code_of_acked_pdu: FileDirectiveType,
--- a/src/cfdp/pdu/eof.rs
+++ b/src/cfdp/pdu/eof.rs
@ -15,7 +15,6 @@ use super::{CfdpPdu, WritablePduPacket};
 /// For more information, refer to CFDP chapter 5.2.2.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct EofPdu {
    pdu_header: PduHeader,
    condition_code: ConditionCode,
--- a/src/cfdp/pdu/finished.rs
+++ b/src/cfdp/pdu/finished.rs
@ -14,7 +14,6 @@ use super::{CfdpPdu, WritablePduPacket};

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum DeliveryCode {
    Complete = 0,
@ -23,7 +22,6 @@ pub enum DeliveryCode {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum FileStatus {
    DiscardDeliberately = 0b00,
@ -36,7 +34,6 @@ pub enum FileStatus {
 ///
 /// For more information, refer to CFDP chapter 5.2.3.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct FinishedPduCreator<'fs_responses> {
    pdu_header: PduHeader,
    condition_code: ConditionCode,
@ -222,7 +219,6 @@ impl<'buf> Iterator for FilestoreResponseIterator<'buf> {

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct FinishedPduReader<'buf> {
    pdu_header: PduHeader,
    condition_code: ConditionCode,
--- a/src/cfdp/pdu/metadata.rs
+++ b/src/cfdp/pdu/metadata.rs
@ -15,7 +15,6 @@ use super::{CfdpPdu, WritablePduPacket};

 #[derive(Default, Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct MetadataGenericParams {
    pub closure_requested: bool,
    pub checksum_type: ChecksumType,
@ -56,7 +55,6 @@ pub fn build_metadata_opts_from_vec(
 /// This abstraction exposes a specialized API for creating metadata PDUs as specified in
 /// CFDP chapter 5.2.5.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct MetadataPduCreator<'src_name, 'dest_name, 'opts> {
    pdu_header: PduHeader,
    metadata_params: MetadataGenericParams,
@ -243,7 +241,6 @@ impl<'opts> Iterator for OptionsIter<'opts> {
 /// involved.
 #[derive(Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct MetadataPduReader<'buf> {
    pdu_header: PduHeader,
    metadata_params: MetadataGenericParams,
--- a/src/cfdp/pdu/mod.rs
+++ b/src/cfdp/pdu/mod.rs
@ -18,7 +18,6 @@ pub mod nak;

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum FileDirectiveType {
    EofPdu = 0x04,
@ -221,7 +220,6 @@ pub trait CfdpPdu {
 /// same.
 #[derive(Debug, Copy, Clone, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct CommonPduConfig {
    source_entity_id: UnsignedByteField,
    dest_entity_id: UnsignedByteField,
@ -360,7 +358,6 @@ pub const FIXED_HEADER_LEN: usize = 4;
 /// For detailed information, refer to chapter 5.1 of the CFDP standard.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PduHeader {
    pdu_type: PduType,
    pdu_conf: CommonPduConfig,
--- a/src/cfdp/pdu/nak.rs
+++ b/src/cfdp/pdu/nak.rs
@ -12,7 +12,6 @@ use super::{
 /// Helper type to encapsulate both normal file size segment requests and large file size segment
 /// requests.
 #[derive(Debug, PartialEq, Eq, Clone)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum SegmentRequests<'a> {
    U32Pairs(&'a [(u32, u32)]),
    U64Pairs(&'a [(u64, u64)]),
@ -32,7 +31,6 @@ impl SegmentRequests<'_> {
 /// It exposes a specialized API which simplifies to generate these NAK PDUs with the
 /// format according to CFDP chapter 5.2.6.
 #[derive(Debug, Clone, PartialEq, Eq)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct NakPduCreator<'seg_reqs> {
    pdu_header: PduHeader,
    start_of_scope: u64,
@ -355,7 +353,6 @@ impl<T: SegReqFromBytes> SegmentRequestIter<'_, T> {
 ///
 /// The NAK format is expected to be conforming to CFDP chapter 5.2.6.
 #[derive(Debug, PartialEq, Eq)]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct NakPduReader<'seg_reqs> {
    pdu_header: PduHeader,
    start_of_scope: u64,
--- a/src/cfdp/tlv/mod.rs
+++ b/src/cfdp/tlv/mod.rs
@ -52,7 +52,6 @@ pub trait WritableTlv {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum TlvType {
    FilestoreRequest = 0x00,
@ -65,7 +64,6 @@ pub enum TlvType {

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum TlvTypeField {
    Standard(TlvType),
    Custom(u8),
@ -73,7 +71,6 @@ pub enum TlvTypeField {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, TryFromPrimitive, IntoPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum FilestoreActionCode {
    CreateFile = 0b0000,
@ -121,7 +118,6 @@ impl From<TlvTypeField> for u8 {
 ///    this will be the lifetime of that data reference.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct Tlv<'data> {
    tlv_type_field: TlvTypeField,
    #[cfg_attr(feature = "serde", serde(borrow))]
@ -228,7 +224,6 @@ pub(crate) fn verify_tlv_type(raw_type: u8, expected_tlv_type: TlvType) -> Resul

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct EntityIdTlv {
    entity_id: UnsignedByteField,
 }
@ -353,7 +348,6 @@ pub fn fs_request_has_second_filename(action_code: FilestoreActionCode) -> bool

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 struct FilestoreTlvBase<'first_name, 'second_name> {
    pub action_code: FilestoreActionCode,
    #[cfg_attr(feature = "serde", serde(borrow))]
@ -567,7 +561,6 @@ impl GenericTlv for FilestoreRequestTlv<'_, '_> {

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct FilestoreResponseTlv<'first_name, 'second_name, 'fs_msg> {
    #[cfg_attr(feature = "serde", serde(borrow))]
    base: FilestoreTlvBase<'first_name, 'second_name>,
--- a/src/ecss/hk.rs
+++ b/src/ecss/hk.rs
@ -5,7 +5,6 @@ use serde::{Deserialize, Serialize};

 #[derive(Debug, Eq, PartialEq, Copy, Clone, IntoPrimitive, TryFromPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 pub enum Subservice {
    // Regular HK
--- a/src/ecss/mod.rs
+++ b/src/ecss/mod.rs
@ -74,7 +74,6 @@ pub enum PusServiceId {
 /// All PUS versions. Only PUS C is supported by this library.
 #[derive(PartialEq, Eq, Copy, Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[non_exhaustive]
 pub enum PusVersion {
    EsaPus = 0,
@ -151,7 +150,6 @@ pub enum PfcReal {

 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum PusError {
    VersionNotSupported(PusVersion),
    ChecksumFailure(u16),
--- a/src/ecss/tc.rs
+++ b/src/ecss/tc.rs
@ -59,7 +59,6 @@ pub trait IsPusTelecommand {}

 #[derive(Debug, Eq, PartialEq, Copy, Clone, IntoPrimitive, TryFromPrimitive)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[repr(u8)]
 enum AckOpts {
    Acceptance = 0b1000,
@ -145,7 +144,6 @@ pub mod zc {

 #[derive(PartialEq, Eq, Copy, Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PusTcSecondaryHeader {
    pub service: u8,
    pub subservice: u8,
@ -222,7 +220,6 @@ impl PusTcSecondaryHeader {
 /// There is no spare bytes support yet.
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PusTcCreator<'raw_data> {
    sp_header: SpHeader,
    pub sec_header: PusTcSecondaryHeader,
@ -267,13 +264,13 @@ impl<'raw_data> PusTcCreator<'raw_data> {
        sph: &mut SpHeader,
        service: u8,
        subservice: u8,
-        app_data: &'raw_data [u8],
+        app_data: Option<&'raw_data [u8]>,
        set_ccsds_len: bool,
    ) -> Self {
        Self::new(
            sph,
            PusTcSecondaryHeader::new(service, subservice, ACK_ALL, 0),
-            app_data,
+            app_data.unwrap_or(&[]),
            set_ccsds_len,
        )
    }
@ -424,7 +421,6 @@ impl IsPusTelecommand for PusTcCreator<'_> {}
 /// * `'raw_data` - Lifetime of the provided raw slice.
 #[derive(Eq, Copy, Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PusTcReader<'raw_data> {
    #[cfg_attr(feature = "serde", serde(skip))]
    raw_data: &'raw_data [u8],
@ -575,12 +571,12 @@ mod tests {

    fn base_ping_tc_simple_ctor() -> PusTcCreator<'static> {
        let mut sph = SpHeader::tc_unseg(0x02, 0x34, 0).unwrap();
-        PusTcCreator::new_simple(&mut sph, 17, 1, &[], true)
+        PusTcCreator::new_simple(&mut sph, 17, 1, None, true)
    }

    fn base_ping_tc_simple_ctor_with_app_data(app_data: &'static [u8]) -> PusTcCreator<'static> {
        let mut sph = SpHeader::tc_unseg(0x02, 0x34, 0).unwrap();
-        PusTcCreator::new_simple(&mut sph, 17, 1, app_data, true)
+        PusTcCreator::new_simple(&mut sph, 17, 1, Some(app_data), true)
    }

    #[test]
@ -637,7 +633,7 @@ mod tests {
    #[test]
    fn test_update_func() {
        let mut sph = SpHeader::tc_unseg(0x02, 0x34, 0).unwrap();
-        let mut tc = PusTcCreator::new_simple(&mut sph, 17, 1, &[], false);
+        let mut tc = PusTcCreator::new_simple(&mut sph, 17, 1, None, false);
        assert_eq!(tc.data_len(), 0);
        tc.update_ccsds_data_len();
        assert_eq!(tc.data_len(), 6);
--- a/src/ecss/tm.rs
+++ b/src/ecss/tm.rs
@ -115,7 +115,6 @@ pub mod zc {

 #[derive(PartialEq, Eq, Copy, Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PusTmSecondaryHeader<'stamp> {
    pus_version: PusVersion,
    pub sc_time_ref_status: u8,
@ -123,17 +122,17 @@ pub struct PusTmSecondaryHeader<'stamp> {
    pub subservice: u8,
    pub msg_counter: u16,
    pub dest_id: u16,
-    pub time_stamp: &'stamp [u8],
+    pub timestamp: &'stamp [u8],
 }

 impl<'stamp> PusTmSecondaryHeader<'stamp> {
-    pub fn new_simple(service: u8, subservice: u8, time_stamp: &'stamp [u8]) -> Self {
-        Self::new(service, subservice, 0, 0, time_stamp)
+    pub fn new_simple(service: u8, subservice: u8, timestamp: &'stamp [u8]) -> Self {
+        Self::new(service, subservice, 0, 0, Some(timestamp))
    }

    /// Like [Self::new_simple] but without a timestamp.
    pub fn new_simple_no_timestamp(service: u8, subservice: u8) -> Self {
-        Self::new(service, subservice, 0, 0, &[])
+        Self::new(service, subservice, 0, 0, None)
    }

    pub fn new(
@ -141,7 +140,7 @@ impl<'stamp> PusTmSecondaryHeader<'stamp> {
        subservice: u8,
        msg_counter: u16,
        dest_id: u16,
-        time_stamp: &'stamp [u8],
+        timestamp: Option<&'stamp [u8]>,
    ) -> Self {
        PusTmSecondaryHeader {
            pus_version: PusVersion::PusC,
@ -150,7 +149,7 @@ impl<'stamp> PusTmSecondaryHeader<'stamp> {
            subservice,
            msg_counter,
            dest_id,
-            time_stamp,
+            timestamp: timestamp.unwrap_or(&[]),
        }
    }
 }
@ -192,7 +191,7 @@ impl<'slice> TryFrom<zc::PusTmSecHeader<'slice>> for PusTmSecondaryHeader<'slice
            subservice: sec_header.zc_header.subservice(),
            msg_counter: sec_header.zc_header.msg_counter(),
            dest_id: sec_header.zc_header.dest_id(),
-            time_stamp: sec_header.timestamp,
+            timestamp: sec_header.timestamp,
        })
    }
 }
@ -211,10 +210,9 @@ impl<'slice> TryFrom<zc::PusTmSecHeader<'slice>> for PusTmSecondaryHeader<'slice
 /// * `'raw_data` - This is the lifetime of the user provided time stamp and source data.
 #[derive(Eq, Debug, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PusTmCreator<'time, 'raw_data> {
    pub sp_header: SpHeader,
-    #[cfg_attr(feature = "serde", serde(borrow))]
+     #[cfg_attr(feature="serde", serde(borrow))]
    pub sec_header: PusTmSecondaryHeader<'time>,
    source_data: &'raw_data [u8],
    /// If this is set to false, a manual call to [Self::calc_own_crc16] or
@ -284,7 +282,7 @@ impl<'time, 'raw_data> PusTmCreator<'time, 'raw_data> {
    }

    pub fn timestamp(&self) -> &[u8] {
-        self.sec_header.time_stamp
+        self.sec_header.timestamp
    }

    pub fn source_data(&self) -> &[u8] {
@ -323,7 +321,7 @@ impl<'time, 'raw_data> PusTmCreator<'time, 'raw_data> {
        digest.update(sph_zc.as_bytes());
        let pus_tc_header = zc::PusTmSecHeaderWithoutTimestamp::try_from(self.sec_header).unwrap();
        digest.update(pus_tc_header.as_bytes());
-        digest.update(self.sec_header.time_stamp);
+        digest.update(self.sec_header.timestamp);
        digest.update(self.source_data);
        digest.finalize()
    }
@ -352,9 +350,9 @@ impl<'time, 'raw_data> PusTmCreator<'time, 'raw_data> {
            .write_to_bytes(&mut slice[curr_idx..curr_idx + sec_header_len])
            .ok_or(ByteConversionError::ZeroCopyToError)?;
        curr_idx += sec_header_len;
-        slice[curr_idx..curr_idx + self.sec_header.time_stamp.len()]
-            .copy_from_slice(self.sec_header.time_stamp);
-        curr_idx += self.sec_header.time_stamp.len();
+        slice[curr_idx..curr_idx + self.sec_header.timestamp.len()]
+            .copy_from_slice(self.sec_header.timestamp);
+        curr_idx += self.sec_header.timestamp.len();
        slice[curr_idx..curr_idx + self.source_data.len()].copy_from_slice(self.source_data);
        curr_idx += self.source_data.len();
        let mut digest = CRC_CCITT_FALSE.digest();
@ -368,15 +366,14 @@ impl<'time, 'raw_data> PusTmCreator<'time, 'raw_data> {
    #[cfg(feature = "alloc")]
    pub fn append_to_vec(&self, vec: &mut Vec<u8>) -> Result<usize, PusError> {
        let sph_zc = crate::zc::SpHeader::from(self.sp_header);
-        let mut appended_len =
-            PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA + self.sec_header.time_stamp.len();
+        let mut appended_len = PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA + self.sec_header.timestamp.len();
        appended_len += self.source_data.len();
        let start_idx = vec.len();
        vec.extend_from_slice(sph_zc.as_bytes());
        // The PUS version is hardcoded to PUS C
        let sec_header = zc::PusTmSecHeaderWithoutTimestamp::try_from(self.sec_header).unwrap();
        vec.extend_from_slice(sec_header.as_bytes());
-        vec.extend_from_slice(self.sec_header.time_stamp);
+        vec.extend_from_slice(self.sec_header.timestamp);
        vec.extend_from_slice(self.source_data);
        let mut digest = CRC_CCITT_FALSE.digest();
        digest.update(&vec[start_idx..start_idx + appended_len - 2]);
@ -388,7 +385,7 @@ impl<'time, 'raw_data> PusTmCreator<'time, 'raw_data> {
 impl WritablePusPacket for PusTmCreator<'_, '_> {
    fn len_written(&self) -> usize {
        PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA
-            + self.sec_header.time_stamp.len()
+            + self.sec_header.timestamp.len()
            + self.source_data.len()
    }
    /// Write the raw PUS byte representation to a provided buffer.
@ -452,7 +449,6 @@ impl IsPusTelemetry for PusTmCreator<'_, '_> {}
 /// * `'raw_data` - Lifetime of the raw slice this class is constructed from.
 #[derive(Eq, Debug, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PusTmReader<'raw_data> {
    pub sp_header: SpHeader,
    pub sec_header: PusTmSecondaryHeader<'raw_data>,
@ -527,7 +523,7 @@ impl<'raw_data> PusTmReader<'raw_data> {
    }

    pub fn timestamp(&self) -> &[u8] {
-        self.sec_header.time_stamp
+        self.sec_header.timestamp
    }

    /// This function will return the slice [Self] was constructed from.
@ -1147,7 +1143,7 @@ mod tests {
    #[test]
    fn test_sec_header_without_stamp() {
        let sec_header = PusTmSecondaryHeader::new_simple_no_timestamp(17, 1);
-        assert_eq!(sec_header.time_stamp, &[]);
+        assert_eq!(sec_header.timestamp, &[]);
    }

    #[test]
--- a/src/lib.rs
+++ b/src/lib.rs
@ -36,11 +36,7 @@
 //! ### Optional features
 //!
 //!  - [`serde`](https://serde.rs/): Adds `serde` support for most types by adding `Serialize` and
-//!    `Deserialize` `derives.
-//!  - [`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.
+//!    `Deserialize` `derive`s
 //!
 //! ## Module
 //!
@ -59,7 +55,7 @@
 //! println!("{:x?}", &ccsds_buf[0..6]);
 //! ```
 #![no_std]
-#![cfg_attr(docs_rs, feature(doc_auto_cfg))]
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #[cfg(feature = "alloc")]
 extern crate alloc;
 #[cfg(any(feature = "std", test))]
@ -97,7 +93,6 @@ pub const MAX_SEQ_COUNT: u16 = 2u16.pow(14) - 1;
 /// Generic error type when converting to and from raw byte slices.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum ByteConversionError {
    /// The passed slice is too small. Returns the passed slice length and expected minimum size
    ToSliceTooSmall {
@ -147,7 +142,6 @@ impl Error for ByteConversionError {}
 /// CCSDS packet type enumeration.
 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum PacketType {
    Tm = 0,
    Tc = 1,
@ -171,7 +165,6 @@ pub fn packet_type_in_raw_packet_id(packet_id: u16) -> PacketType {

 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum SequenceFlags {
    ContinuationSegment = 0b00,
    FirstSegment = 0b01,
@ -199,7 +192,6 @@ impl TryFrom<u8> for SequenceFlags {
 /// of the first two bytes in the CCSDS primary header.
 #[derive(Debug, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PacketId {
    pub ptype: PacketType,
    pub sec_header_flag: bool,
@ -311,7 +303,6 @@ impl From<u16> for PacketId {
 /// third and the fourth byte in the CCSDS primary header.
 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct PacketSequenceCtrl {
    pub seq_flags: SequenceFlags,
    seq_count: u16,
@ -472,7 +463,6 @@ pub trait CcsdsPrimaryHeader {
 /// * `data_len` - Data length field occupies the fifth and the sixth byte of the raw header
 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct SpHeader {
    pub version: u8,
    pub packet_id: PacketId,
@ -808,7 +798,7 @@ pub(crate) mod tests {
        let id_default = PacketId::default();
        assert_eq!(id_default.ptype, PacketType::Tm);
        assert_eq!(id_default.apid, 0x000);
-        assert!(!id_default.sec_header_flag);
+        assert_eq!(id_default.sec_header_flag, false);
    }

    #[test]
@ -818,7 +808,7 @@ pub(crate) mod tests {
        let packet_id = packet_id.unwrap();
        assert_eq!(packet_id.apid(), 0x1ff);
        assert_eq!(packet_id.ptype, PacketType::Tc);
-        assert!(packet_id.sec_header_flag);
+        assert_eq!(packet_id.sec_header_flag, true);
        let packet_id_tc = PacketId::tc(true, 0x1ff);
        assert!(packet_id_tc.is_some());
        let packet_id_tc = packet_id_tc.unwrap();
--- a/src/time/cds.rs
+++ b/src/time/cds.rs
@ -78,7 +78,6 @@ impl ProvidesDaysLength for DaysLen24Bits {

 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum LengthOfDaySegment {
    Short16Bits = 0,
    Long24Bits = 1,
@ -95,7 +94,6 @@ pub enum SubmillisPrecision {

 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum CdsError {
    /// CCSDS days value exceeds maximum allowed size or is negative
    InvalidCcsdsDays(i64),
--- a/src/time/cuc.rs
+++ b/src/time/cuc.rs
@ -37,7 +37,6 @@ pub const MAX_CUC_LEN_SMALL_PREAMBLE: usize = 8;

 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum FractionalResolution {
    /// No fractional part, only second resolution
    Seconds = 0,
@ -106,7 +105,6 @@ pub fn fractional_part_from_subsec_ns(res: FractionalResolution, ns: u64) -> Fra

 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum CucError {
    InvalidCounterWidth(u8),
    /// Invalid counter supplied.
--- a/src/time/mod.rs
+++ b/src/time/mod.rs
@ -33,7 +33,6 @@ pub const NANOS_PER_SECOND: u32 = 1_000_000_000;

 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum CcsdsTimeCode {
    CucCcsdsEpoch = 0b001,
    CucAgencyEpoch = 0b010,
@ -66,7 +65,6 @@ pub fn ccsds_time_code_from_p_field(pfield: u8) -> Result<CcsdsTimeCode, u8> {

 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct DateBeforeCcsdsEpochError(UnixTime);

 impl Display for DateBeforeCcsdsEpochError {
@ -80,7 +78,6 @@ impl Error for DateBeforeCcsdsEpochError {}

 #[derive(Debug, PartialEq, Eq, Copy, Clone)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[non_exhaustive]
 pub enum TimestampError {
    InvalidTimeCode { expected: CcsdsTimeCode, found: u8 },
@ -265,7 +262,6 @@ pub trait CcsdsTimeProvider {
 /// similarly to other common time formats and libraries.
 #[derive(Default, Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct UnixTime {
    secs: i64,
    subsec_nanos: u32,
--- a/src/util.rs
+++ b/src/util.rs
@ -131,7 +131,6 @@ impl Error for UnsignedByteFieldError {}
 /// Type erased variant.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct UnsignedByteField {
    width: usize,
    value: u64,
@ -221,7 +220,6 @@ impl UnsignedEnum for UnsignedByteField {

 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct GenericUnsignedByteField<TYPE: Copy + Into<u64>> {
    value: TYPE,
 }