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update ECSS code #75

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muellerr merged 2 commits from update-ecss-code into main 2024-03-29 14:22:44 +01:00
Conversation 0 Commits 2 Files Changed 4 +33 -702
4 changed files with 33 additions and 702 deletions
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6
CHANGELOG.md
View File

@ -48,8 +48,14 @@ to check all the API changes in the **Changed** chapter.
- Error handling for ECSS and time module is more granular now, with a new
`DateBeforeCcsdsEpochError` error and a `DateBeforeCcsdsEpoch` enum variant for both
`CdsError` and `CucError`.
- `PusTmCreator` now has two lifetimes: One for the raw source data buffer and one for the
raw timestamp.
- Time API `from_now*` API renamed to `now*`.
## Removed
- Legacy `PusTm` and `PusTc` objects.
# [v0.11.0-rc.0] 2024-03-04
## Added

18
src/ecss/mod.rs
View File

@ -227,24 +227,6 @@ pub(crate) fn calc_pus_crc16(bytes: &[u8]) -> u16 {
digest.finalize()
}
pub(crate) fn crc_procedure(
calc_on_serialization: bool,
cached_crc16: &Option<u16>,
start_idx: usize,
curr_idx: usize,
slice: &[u8],
) -> Result<u16, PusError> {
let crc16;
if calc_on_serialization {
crc16 = calc_pus_crc16(&slice[start_idx..curr_idx])
} else if cached_crc16.is_none() {
return Err(PusError::CrcCalculationMissing);
} else {
crc16 = cached_crc16.unwrap();
}
Ok(crc16)
}
pub(crate) fn user_data_from_raw(
current_idx: usize,
total_len: usize,

337
src/ecss/tc.rs
View File

@ -48,8 +48,6 @@ use zerocopy::AsBytes;
#[cfg(feature = "alloc")]
use alloc::vec::Vec;
pub use legacy_tc::*;
/// PUS C secondary header length is fixed
pub const PUC_TC_SECONDARY_HEADER_LEN: usize = size_of::<zc::PusTcSecondaryHeader>();
pub const PUS_TC_MIN_LEN_WITHOUT_APP_DATA: usize =
@ -214,332 +212,6 @@ impl PusTcSecondaryHeader {
}
}
pub mod legacy_tc {
use crate::ecss::tc::{
zc, GenericPusTcSecondaryHeader, IsPusTelecommand, PusTcSecondaryHeader, ACK_ALL,
PUC_TC_SECONDARY_HEADER_LEN, PUS_TC_MIN_LEN_WITHOUT_APP_DATA,
};
use crate::ecss::{
ccsds_impl, crc_from_raw_data, crc_procedure, sp_header_impls,
verify_crc16_ccitt_false_from_raw_to_pus_error, PusError, PusPacket, WritablePusPacket,
CCSDS_HEADER_LEN,
};
use crate::ecss::{user_data_from_raw, PusVersion};
use crate::SequenceFlags;
use crate::{ByteConversionError, CcsdsPacket, PacketType, SpHeader, CRC_CCITT_FALSE};
use core::mem::size_of;
use delegate::delegate;
use zerocopy::AsBytes;
#[cfg(feature = "alloc")]
use alloc::vec::Vec;
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
/// This class models the PUS C telecommand packet. It is the primary data structure to generate the
/// raw byte representation of a PUS telecommand or to deserialize from one from raw bytes.
///
/// This class also derives the [serde::Serialize] and [serde::Deserialize] trait if the
/// [serde] feature is used, which allows to send around TC packets in a raw byte format using a
/// serde provider like [postcard](https://docs.rs/postcard/latest/postcard/).
///
/// There is no spare bytes support yet.
///
/// # Lifetimes
///
/// * `'raw_data` - If the TC is not constructed from a raw slice, this will be the life time of
/// a buffer where the user provided application data will be serialized into. If it
/// is, this is the lifetime of the raw byte slice it is constructed from.
#[derive(Eq, Copy, Clone, Debug)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct PusTc<'raw_data> {
sp_header: SpHeader,
pub sec_header: PusTcSecondaryHeader,
/// If this is set to false, a manual call to [PusTc::calc_own_crc16] or
/// [PusTc::update_packet_fields] is necessary for the serialized or cached CRC16 to be valid.
pub calc_crc_on_serialization: bool,
#[cfg_attr(feature = "serde", serde(skip))]
raw_data: Option<&'raw_data [u8]>,
app_data: &'raw_data [u8],
crc16: Option<u16>,
}
impl<'raw_data> PusTc<'raw_data> {
/// Generates a new struct instance.
///
/// # Arguments
///
/// * `sp_header` - Space packet header information. The correct packet type will be set
/// automatically
/// * `sec_header` - Information contained in the data field header, including the service
/// and subservice type
/// * `app_data` - Custom application data
/// * `set_ccsds_len` - Can be used to automatically update the CCSDS space packet data length
/// field. If this is not set to true, [PusTc::update_ccsds_data_len] can be called to set
/// the correct value to this field manually
#[deprecated(
since = "0.7.0",
note = "Use specialized PusTcCreator or PusTcReader classes instead"
)]
pub fn new(
sp_header: &mut SpHeader,
sec_header: PusTcSecondaryHeader,
app_data: Option<&'raw_data [u8]>,
set_ccsds_len: bool,
) -> Self {
sp_header.set_packet_type(PacketType::Tc);
sp_header.set_sec_header_flag();
let mut pus_tc = Self {
sp_header: *sp_header,
raw_data: None,
app_data: app_data.unwrap_or(&[]),
sec_header,
calc_crc_on_serialization: true,
crc16: None,
};
if set_ccsds_len {
pus_tc.update_ccsds_data_len();
}
pus_tc
}
/// Simplified version of the [PusTc::new] function which allows to only specify service and
/// subservice instead of the full PUS TC secondary header.
#[deprecated(
since = "0.7.0",
note = "Use specialized PusTcCreator or PusTcReader classes instead"
)]
pub fn new_simple(
sph: &mut SpHeader,
service: u8,
subservice: u8,
app_data: Option<&'raw_data [u8]>,
set_ccsds_len: bool,
) -> Self {
#[allow(deprecated)]
Self::new(
sph,
PusTcSecondaryHeader::new(service, subservice, ACK_ALL, 0),
app_data,
set_ccsds_len,
)
}
pub fn sp_header(&self) -> &SpHeader {
&self.sp_header
}
pub fn set_ack_field(&mut self, ack: u8) -> bool {
if ack > 0b1111 {
return false;
}
self.sec_header.ack = ack & 0b1111;
true
}
pub fn set_source_id(&mut self, source_id: u16) {
self.sec_header.source_id = source_id;
}
sp_header_impls!();
/// Calculate the CCSDS space packet data length field and sets it
/// This is called automatically if the `set_ccsds_len` argument in the [PusTc::new] call was
/// used.
/// If this was not done or the application data is set or changed after construction,
/// this function needs to be called to ensure that the data length field of the CCSDS header
/// is set correctly.
pub fn update_ccsds_data_len(&mut self) {
self.sp_header.data_len =
self.len_written() as u16 - size_of::<crate::zc::SpHeader>() as u16 - 1;
}
/// This function should be called before the TC packet is serialized if
/// [PusTc::calc_crc_on_serialization] is set to False. It will calculate and cache the CRC16.
pub fn calc_own_crc16(&mut self) {
let mut digest = CRC_CCITT_FALSE.digest();
let sph_zc = crate::zc::SpHeader::from(self.sp_header);
digest.update(sph_zc.as_bytes());
let pus_tc_header = zc::PusTcSecondaryHeader::try_from(self.sec_header).unwrap();
digest.update(pus_tc_header.as_bytes());
if !self.app_data.is_empty() {
digest.update(self.app_data);
}
self.crc16 = Some(digest.finalize())
}
/// This helper function calls both [PusTc::update_ccsds_data_len] and [PusTc::calc_own_crc16].
pub fn update_packet_fields(&mut self) {
self.update_ccsds_data_len();
self.calc_own_crc16();
}
#[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 appended_len = PUS_TC_MIN_LEN_WITHOUT_APP_DATA + self.app_data.len();
let start_idx = vec.len();
let mut ser_len = 0;
vec.extend_from_slice(sph_zc.as_bytes());
ser_len += sph_zc.as_bytes().len();
// The PUS version is hardcoded to PUS C
let pus_tc_header = zc::PusTcSecondaryHeader::try_from(self.sec_header).unwrap();
vec.extend_from_slice(pus_tc_header.as_bytes());
ser_len += pus_tc_header.as_bytes().len();
vec.extend_from_slice(self.app_data);
ser_len += self.app_data.len();
let crc16 = crc_procedure(
self.calc_crc_on_serialization,
&self.crc16,
start_idx,
ser_len,
&vec[start_idx..ser_len],
)?;
vec.extend_from_slice(crc16.to_be_bytes().as_slice());
Ok(appended_len)
}
/// Create a [PusTc] instance from a raw slice. On success, it returns a tuple containing
/// the instance and the found byte length of the packet.
#[deprecated(
since = "0.7.0",
note = "Use specialized PusTcCreator or PusTcReader classes instead"
)]
pub fn from_bytes(slice: &'raw_data [u8]) -> Result<(Self, usize), PusError> {
let raw_data_len = slice.len();
if raw_data_len < PUS_TC_MIN_LEN_WITHOUT_APP_DATA {
return Err(ByteConversionError::FromSliceTooSmall {
found: raw_data_len,
expected: PUS_TC_MIN_LEN_WITHOUT_APP_DATA,
}
.into());
}
let mut current_idx = 0;
let (sp_header, _) = SpHeader::from_be_bytes(&slice[0..CCSDS_HEADER_LEN])?;
current_idx += CCSDS_HEADER_LEN;
let total_len = sp_header.total_len();
if raw_data_len < total_len || total_len < PUS_TC_MIN_LEN_WITHOUT_APP_DATA {
return Err(ByteConversionError::FromSliceTooSmall {
found: raw_data_len,
expected: total_len,
}
.into());
}
let sec_header = zc::PusTcSecondaryHeader::from_bytes(
&slice[current_idx..current_idx + PUC_TC_SECONDARY_HEADER_LEN],
)
.ok_or(ByteConversionError::ZeroCopyFromError)?;
current_idx += PUC_TC_SECONDARY_HEADER_LEN;
let raw_data = &slice[0..total_len];
let pus_tc = Self {
sp_header,
sec_header: PusTcSecondaryHeader::try_from(sec_header).unwrap(),
raw_data: Some(raw_data),
app_data: user_data_from_raw(current_idx, total_len, slice)?,
calc_crc_on_serialization: false,
crc16: Some(crc_from_raw_data(raw_data)?),
};
verify_crc16_ccitt_false_from_raw_to_pus_error(
raw_data,
pus_tc.crc16.expect("CRC16 invalid"),
)?;
Ok((pus_tc, total_len))
}
#[deprecated(since = "0.5.2", note = "use raw_bytes() instead")]
pub fn raw(&self) -> Option<&'raw_data [u8]> {
self.raw_bytes()
}
/// If [Self] was constructed [Self::from_bytes], this function will return the slice it was
/// constructed from. Otherwise, [None] will be returned.
pub fn raw_bytes(&self) -> Option<&'raw_data [u8]> {
self.raw_data
}
}
impl WritablePusPacket for PusTc<'_> {
fn len_written(&self) -> usize {
PUS_TC_MIN_LEN_WITHOUT_APP_DATA + self.app_data.len()
}
/// Write the raw PUS byte representation to a provided buffer.
fn write_to_bytes(&self, slice: &mut [u8]) -> Result<usize, PusError> {
let mut curr_idx = 0;
let tc_header_len = size_of::<zc::PusTcSecondaryHeader>();
let total_size = self.len_written();
if total_size > slice.len() {
return Err(ByteConversionError::ToSliceTooSmall {
found: slice.len(),
expected: total_size,
}
.into());
}
self.sp_header.write_to_be_bytes(slice)?;
curr_idx += CCSDS_HEADER_LEN;
let sec_header = zc::PusTcSecondaryHeader::try_from(self.sec_header).unwrap();
sec_header
.write_to_bytes(&mut slice[curr_idx..curr_idx + tc_header_len])
.ok_or(ByteConversionError::ZeroCopyToError)?;
curr_idx += tc_header_len;
slice[curr_idx..curr_idx + self.app_data.len()].copy_from_slice(self.app_data);
curr_idx += self.app_data.len();
let crc16 = crc_procedure(
self.calc_crc_on_serialization,
&self.crc16,
0,
curr_idx,
slice,
)?;
slice[curr_idx..curr_idx + 2].copy_from_slice(crc16.to_be_bytes().as_slice());
curr_idx += 2;
Ok(curr_idx)
}
}
impl PartialEq for PusTc<'_> {
fn eq(&self, other: &Self) -> bool {
self.sp_header == other.sp_header
&& self.sec_header == other.sec_header
&& self.app_data == other.app_data
}
}
impl CcsdsPacket for PusTc<'_> {
ccsds_impl!();
}
impl PusPacket for PusTc<'_> {
delegate!(to self.sec_header {
fn pus_version(&self) -> PusVersion;
fn service(&self) -> u8;
fn subservice(&self) -> u8;
});
fn user_data(&self) -> &[u8] {
self.app_data
}
fn crc16(&self) -> Option<u16> {
self.crc16
}
}
impl GenericPusTcSecondaryHeader for PusTc<'_> {
delegate!(to self.sec_header {
fn pus_version(&self) -> PusVersion;
fn service(&self) -> u8;
fn subservice(&self) -> u8;
fn source_id(&self) -> u16;
fn ack_flags(&self) -> u8;
});
}
impl IsPusTelecommand for PusTc<'_> {}
}
/// This class can be used to create PUS C telecommand packet. It is the primary data structure to
/// generate the raw byte representation of a PUS telecommand.
///
@ -568,7 +240,7 @@ impl<'raw_data> PusTcCreator<'raw_data> {
/// and subservice type
/// * `app_data` - Custom application data
/// * `set_ccsds_len` - Can be used to automatically update the CCSDS space packet data length
/// field. If this is not set to true, [PusTc::update_ccsds_data_len] can be called to set
/// field. If this is not set to true, [Self::update_ccsds_data_len] can be called to set
/// the correct value to this field manually
pub fn new(
sp_header: &mut SpHeader,
@ -589,7 +261,7 @@ impl<'raw_data> PusTcCreator<'raw_data> {
pus_tc
}
/// Simplified version of the [PusTcCreator::new] function which allows to only specify service
/// Simplified version of the [Self::new] function which allows to only specify service
/// and subservice instead of the full PUS TC secondary header.
pub fn new_simple(
sph: &mut SpHeader,
@ -633,7 +305,7 @@ impl<'raw_data> PusTcCreator<'raw_data> {
sp_header_impls!();
/// Calculate the CCSDS space packet data length field and sets it
/// This is called automatically if the `set_ccsds_len` argument in the [PusTc::new] call was
/// This is called automatically if the `set_ccsds_len` argument in the [Self::new] call was
/// used.
/// If this was not done or the application data is set or changed after construction,
/// this function needs to be called to ensure that the data length field of the CCSDS header
@ -643,8 +315,7 @@ impl<'raw_data> PusTcCreator<'raw_data> {
self.len_written() as u16 - size_of::<crate::zc::SpHeader>() as u16 - 1;
}
/// This function should be called before the TC packet is serialized if
/// [PusTc::calc_crc_on_serialization] is set to False. It will calculate and cache the CRC16.
/// This function calculates and returns the CRC16 for the current packet.
pub fn calc_own_crc16(&self) -> u16 {
let mut digest = CRC_CCITT_FALSE.digest();
let sph_zc = crate::zc::SpHeader::from(self.sp_header);

374
src/ecss/tm.rs
View File

@ -19,7 +19,6 @@ use alloc::vec::Vec;
use delegate::delegate;
use crate::time::{TimeWriter, TimestampError};
pub use legacy_tm::*;
use self::zc::PusTmSecHeaderWithoutTimestamp;
@ -198,334 +197,6 @@ impl<'slice> TryFrom<zc::PusTmSecHeader<'slice>> for PusTmSecondaryHeader<'slice
}
}
pub mod legacy_tm {
use crate::ecss::tm::{
zc, GenericPusTmSecondaryHeader, IsPusTelemetry, PusTmSecondaryHeader,
PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA, PUS_TM_MIN_SEC_HEADER_LEN,
};
use crate::ecss::PusVersion;
use crate::ecss::{
ccsds_impl, crc_from_raw_data, crc_procedure, sp_header_impls, user_data_from_raw,
verify_crc16_ccitt_false_from_raw_to_pus_error, PusError, PusPacket, WritablePusPacket,
CCSDS_HEADER_LEN,
};
use crate::SequenceFlags;
use crate::{ByteConversionError, CcsdsPacket, PacketType, SpHeader, CRC_CCITT_FALSE};
use core::mem::size_of;
use zerocopy::AsBytes;
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
#[cfg(feature = "alloc")]
use alloc::vec::Vec;
use delegate::delegate;
/// This class models the PUS C telemetry packet. It is the primary data structure to generate the
/// raw byte representation of PUS telemetry or to deserialize from one from raw bytes.
///
/// This class also derives the [serde::Serialize] and [serde::Deserialize] trait if the [serde]
/// feature is used which allows to send around TM packets in a raw byte format using a serde
/// provider like [postcard](https://docs.rs/postcard/latest/postcard/).
///
/// There is no spare bytes support yet.
///
/// # Lifetimes
///
/// * `'raw_data` - If the TM is not constructed from a raw slice, this will be the life time of
/// a buffer where the user provided time stamp and source data will be serialized into. If it
/// is, this is the lifetime of the raw byte slice it is constructed from.
#[derive(Eq, Debug, Copy, Clone)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct PusTm<'raw_data> {
pub sp_header: SpHeader,
pub sec_header: PusTmSecondaryHeader<'raw_data>,
/// If this is set to false, a manual call to [PusTm::calc_own_crc16] or
/// [PusTm::update_packet_fields] is necessary for the serialized or cached CRC16 to be valid.
pub calc_crc_on_serialization: bool,
#[cfg_attr(feature = "serde", serde(skip))]
raw_data: Option<&'raw_data [u8]>,
source_data: &'raw_data [u8],
crc16: Option<u16>,
}
impl<'raw_data> PusTm<'raw_data> {
/// Generates a new struct instance.
///
/// # Arguments
///
/// * `sp_header` - Space packet header information. The correct packet type will be set
/// automatically
/// * `sec_header` - Information contained in the secondary header, including the service
/// and subservice type
/// * `app_data` - Custom application data
/// * `set_ccsds_len` - Can be used to automatically update the CCSDS space packet data length
/// field. If this is not set to true, [PusTm::update_ccsds_data_len] can be called to set
/// the correct value to this field manually
#[deprecated(
since = "0.7.0",
note = "Use specialized PusTmCreator or PusTmReader classes instead"
)]
pub fn new(
sp_header: &mut SpHeader,
sec_header: PusTmSecondaryHeader<'raw_data>,
source_data: Option<&'raw_data [u8]>,
set_ccsds_len: bool,
) -> Self {
sp_header.set_packet_type(PacketType::Tm);
sp_header.set_sec_header_flag();
let mut pus_tm = PusTm {
sp_header: *sp_header,
raw_data: None,
source_data: source_data.unwrap_or(&[]),
sec_header,
calc_crc_on_serialization: true,
crc16: None,
};
if set_ccsds_len {
pus_tm.update_ccsds_data_len();
}
pus_tm
}
pub fn timestamp(&self) -> &[u8] {
self.sec_header.timestamp
}
pub fn source_data(&self) -> &[u8] {
self.source_data
}
pub fn set_dest_id(&mut self, dest_id: u16) {
self.sec_header.dest_id = dest_id;
}
pub fn set_msg_counter(&mut self, msg_counter: u16) {
self.sec_header.msg_counter = msg_counter
}
pub fn set_sc_time_ref_status(&mut self, sc_time_ref_status: u8) {
self.sec_header.sc_time_ref_status = sc_time_ref_status & 0b1111;
}
sp_header_impls!();
/// This is called automatically if the `set_ccsds_len` argument in the [PusTm::new] call was
/// used.
/// If this was not done or the time stamp or source data is set or changed after construction,
/// this function needs to be called to ensure that the data length field of the CCSDS header
/// is set correctly
pub fn update_ccsds_data_len(&mut self) {
self.sp_header.data_len =
self.len_written() as u16 - size_of::<crate::zc::SpHeader>() as u16 - 1;
}
/// This function should be called before the TM packet is serialized if
/// [PusTm.calc_crc_on_serialization] is set to False. It will calculate and cache the CRC16.
pub fn calc_own_crc16(&mut self) {
let mut digest = CRC_CCITT_FALSE.digest();
let sph_zc = crate::zc::SpHeader::from(self.sp_header);
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.timestamp);
digest.update(self.source_data);
self.crc16 = Some(digest.finalize())
}
/// This helper function calls both [PusTm.update_ccsds_data_len] and [PusTm.calc_own_crc16]
pub fn update_packet_fields(&mut self) {
self.update_ccsds_data_len();
self.calc_own_crc16();
}
/// Append the raw PUS byte representation to a provided [alloc::vec::Vec]
#[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;
appended_len += self.sec_header.timestamp.len();
appended_len += self.source_data.len();
let start_idx = vec.len();
let mut ser_len = 0;
vec.extend_from_slice(sph_zc.as_bytes());
ser_len += sph_zc.as_bytes().len();
// 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());
ser_len += sec_header.as_bytes().len();
ser_len += self.sec_header.timestamp.len();
vec.extend_from_slice(self.sec_header.timestamp);
vec.extend_from_slice(self.source_data);
ser_len += self.source_data.len();
let crc16 = crc_procedure(
self.calc_crc_on_serialization,
&self.crc16,
start_idx,
ser_len,
&vec[start_idx..start_idx + ser_len],
)?;
vec.extend_from_slice(crc16.to_be_bytes().as_slice());
Ok(appended_len)
}
/// Create a [PusTm] instance from a raw slice. On success, it returns a tuple containing
/// the instance and the found byte length of the packet. The timestamp length needs to be
/// known beforehand.
#[deprecated(
since = "0.7.0",
note = "Use specialized PusTmCreator or PusTmReader classes instead"
)]
pub fn from_bytes(
slice: &'raw_data [u8],
timestamp_len: usize,
) -> Result<(Self, usize), PusError> {
let raw_data_len = slice.len();
if raw_data_len < PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA {
return Err(ByteConversionError::FromSliceTooSmall {
found: raw_data_len,
expected: PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA,
}
.into());
}
let mut current_idx = 0;
let (sp_header, _) = SpHeader::from_be_bytes(&slice[0..CCSDS_HEADER_LEN])?;
current_idx += 6;
let total_len = sp_header.total_len();
if raw_data_len < total_len {
return Err(ByteConversionError::FromSliceTooSmall {
found: raw_data_len,
expected: PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA,
}
.into());
}
if total_len < PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA {
return Err(ByteConversionError::FromSliceTooSmall {
found: total_len,
expected: PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA,
}
.into());
}
let sec_header_zc = zc::PusTmSecHeaderWithoutTimestamp::from_bytes(
&slice[current_idx..current_idx + PUS_TM_MIN_SEC_HEADER_LEN],
)
.ok_or(ByteConversionError::ZeroCopyFromError)?;
current_idx += PUS_TM_MIN_SEC_HEADER_LEN;
let zc_sec_header_wrapper = zc::PusTmSecHeader {
zc_header: sec_header_zc,
timestamp: &slice[current_idx..current_idx + timestamp_len],
};
current_idx += timestamp_len;
let raw_data = &slice[0..total_len];
let pus_tm = PusTm {
sp_header,
sec_header: PusTmSecondaryHeader::try_from(zc_sec_header_wrapper).unwrap(),
raw_data: Some(&slice[0..total_len]),
source_data: user_data_from_raw(current_idx, total_len, slice)?,
calc_crc_on_serialization: false,
crc16: Some(crc_from_raw_data(raw_data)?),
};
verify_crc16_ccitt_false_from_raw_to_pus_error(
raw_data,
pus_tm.crc16.expect("CRC16 invalid"),
)?;
Ok((pus_tm, total_len))
}
/// If [Self] was constructed [Self::from_bytes], this function will return the slice it was
/// constructed from. Otherwise, [None] will be returned.
pub fn raw_bytes(&self) -> Option<&'raw_data [u8]> {
self.raw_data
}
}
impl WritablePusPacket for PusTm<'_> {
fn len_written(&self) -> usize {
PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA
+ self.sec_header.timestamp.len()
+ self.source_data.len()
}
/// Write the raw PUS byte representation to a provided buffer.
fn write_to_bytes(&self, slice: &mut [u8]) -> Result<usize, PusError> {
let mut curr_idx = 0;
let total_size = self.len_written();
if total_size > slice.len() {
return Err(ByteConversionError::ToSliceTooSmall {
found: slice.len(),
expected: total_size,
}
.into());
}
self.sp_header
.write_to_be_bytes(&mut slice[0..CCSDS_HEADER_LEN])?;
curr_idx += CCSDS_HEADER_LEN;
let sec_header_len = size_of::<zc::PusTmSecHeaderWithoutTimestamp>();
let sec_header = zc::PusTmSecHeaderWithoutTimestamp::try_from(self.sec_header).unwrap();
sec_header
.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.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 crc16 = crc_procedure(
self.calc_crc_on_serialization,
&self.crc16,
0,
curr_idx,
slice,
)?;
slice[curr_idx..curr_idx + 2].copy_from_slice(crc16.to_be_bytes().as_slice());
curr_idx += 2;
Ok(curr_idx)
}
}
impl PartialEq for PusTm<'_> {
fn eq(&self, other: &Self) -> bool {
self.sp_header == other.sp_header
&& self.sec_header == other.sec_header
&& self.source_data == other.source_data
}
}
impl CcsdsPacket for PusTm<'_> {
ccsds_impl!();
}
impl PusPacket for PusTm<'_> {
delegate!(to self.sec_header {
fn pus_version(&self) -> PusVersion;
fn service(&self) -> u8;
fn subservice(&self) -> u8;
});
fn user_data(&self) -> &[u8] {
self.source_data
}
fn crc16(&self) -> Option<u16> {
self.crc16
}
}
impl GenericPusTmSecondaryHeader for PusTm<'_> {
delegate!(to self.sec_header {
fn pus_version(&self) -> PusVersion;
fn service(&self) -> u8;
fn subservice(&self) -> u8;
fn dest_id(&self) -> u16;
fn msg_counter(&self) -> u16;
fn sc_time_ref_status(&self) -> u8;
});
}
impl IsPusTelemetry for PusTm<'_> {}
}
/// This class models the PUS C telemetry packet. It is the primary data structure to generate the
/// raw byte representation of PUS telemetry.
///
@ -541,16 +212,17 @@ pub mod legacy_tm {
#[derive(Eq, Debug, Copy, Clone)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub struct PusTmCreator<'raw_data> {
pub struct PusTmCreator<'time, 'raw_data> {
pub sp_header: SpHeader,
pub sec_header: PusTmSecondaryHeader<'raw_data>,
#[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 [PusTm::calc_own_crc16] or
/// [PusTm::update_packet_fields] is necessary for the serialized or cached CRC16 to be valid.
/// If this is set to false, a manual call to [Self::calc_own_crc16] or
/// [Self::update_packet_fields] is necessary for the serialized or cached CRC16 to be valid.
pub calc_crc_on_serialization: bool,
}
impl<'raw_data> PusTmCreator<'raw_data> {
impl<'time, 'raw_data> PusTmCreator<'time, 'raw_data> {
/// Generates a new struct instance.
///
/// # Arguments
@ -561,11 +233,11 @@ impl<'raw_data> PusTmCreator<'raw_data> {
/// and subservice type
/// * `source_data` - Custom application data
/// * `set_ccsds_len` - Can be used to automatically update the CCSDS space packet data length
/// field. If this is not set to true, [PusTm::update_ccsds_data_len] can be called to set
/// field. If this is not set to true, [Self::update_ccsds_data_len] can be called to set
/// the correct value to this field manually
pub fn new(
sp_header: &mut SpHeader,
sec_header: PusTmSecondaryHeader<'raw_data>,
sec_header: PusTmSecondaryHeader<'time>,
source_data: &'raw_data [u8],
set_ccsds_len: bool,
) -> Self {
@ -588,7 +260,7 @@ impl<'raw_data> PusTmCreator<'raw_data> {
service: u8,
subservice: u8,
time_provider: &impl TimeWriter,
stamp_buf: &'raw_data mut [u8],
stamp_buf: &'time mut [u8],
source_data: Option<&'raw_data [u8]>,
set_ccsds_len: bool,
) -> Result<Self, TimestampError> {
@ -605,7 +277,7 @@ impl<'raw_data> PusTmCreator<'raw_data> {
pub fn new_no_source_data(
sp_header: &mut SpHeader,
sec_header: PusTmSecondaryHeader<'raw_data>,
sec_header: PusTmSecondaryHeader<'time>,
set_ccsds_len: bool,
) -> Self {
Self::new(sp_header, sec_header, &[], set_ccsds_len)
@ -633,7 +305,7 @@ impl<'raw_data> PusTmCreator<'raw_data> {
sp_header_impls!();
/// This is called automatically if the `set_ccsds_len` argument in the [PusTm::new] call was
/// This is called automatically if the `set_ccsds_len` argument in the [Self::new] call was
/// used.
/// If this was not done or the time stamp or source data is set or changed after construction,
/// this function needs to be called to ensure that the data length field of the CCSDS header
@ -644,7 +316,7 @@ impl<'raw_data> PusTmCreator<'raw_data> {
}
/// This function should be called before the TM packet is serialized if
/// [PusTm.calc_crc_on_serialization] is set to False. It will calculate and cache the CRC16.
/// [Self::calc_crc_on_serialization] is set to False. It will calculate and cache the CRC16.
pub fn calc_own_crc16(&self) -> u16 {
let mut digest = CRC_CCITT_FALSE.digest();
let sph_zc = crate::zc::SpHeader::from(self.sp_header);
@ -656,7 +328,7 @@ impl<'raw_data> PusTmCreator<'raw_data> {
digest.finalize()
}
/// This helper function calls both [PusTm.update_ccsds_data_len] and [PusTm.calc_own_crc16]
/// This helper function calls both [Self::update_ccsds_data_len] and [Self::calc_own_crc16]
pub fn update_packet_fields(&mut self) {
self.update_ccsds_data_len();
}
@ -712,7 +384,7 @@ impl<'raw_data> PusTmCreator<'raw_data> {
}
}
impl WritablePusPacket for PusTmCreator<'_> {
impl WritablePusPacket for PusTmCreator<'_, '_> {
fn len_written(&self) -> usize {
PUS_TM_MIN_LEN_WITHOUT_SOURCE_DATA
+ self.sec_header.timestamp.len()
@ -724,7 +396,7 @@ impl WritablePusPacket for PusTmCreator<'_> {
}
}
impl PartialEq for PusTmCreator<'_> {
impl PartialEq for PusTmCreator<'_, '_> {
fn eq(&self, other: &Self) -> bool {
self.sp_header == other.sp_header
&& self.sec_header == other.sec_header
@ -732,11 +404,11 @@ impl PartialEq for PusTmCreator<'_> {
}
}
impl CcsdsPacket for PusTmCreator<'_> {
impl CcsdsPacket for PusTmCreator<'_, '_> {
ccsds_impl!();
}
impl PusPacket for PusTmCreator<'_> {
impl PusPacket for PusTmCreator<'_, '_> {
delegate!(to self.sec_header {
fn pus_version(&self) -> PusVersion;
fn service(&self) -> u8;
@ -752,7 +424,7 @@ impl PusPacket for PusTmCreator<'_> {
}
}
impl GenericPusTmSecondaryHeader for PusTmCreator<'_> {
impl GenericPusTmSecondaryHeader for PusTmCreator<'_, '_> {
delegate!(to self.sec_header {
fn pus_version(&self) -> PusVersion;
fn service(&self) -> u8;
@ -763,7 +435,7 @@ impl GenericPusTmSecondaryHeader for PusTmCreator<'_> {
});
}
impl IsPusTelemetry for PusTmCreator<'_> {}
impl IsPusTelemetry for PusTmCreator<'_, '_> {}
/// This class models the PUS C telemetry packet. It is the primary data structure to read
/// a telemetry packet from raw bytes.
@ -905,15 +577,15 @@ impl GenericPusTmSecondaryHeader for PusTmReader<'_> {
impl IsPusTelemetry for PusTmReader<'_> {}
impl PartialEq<PusTmCreator<'_>> for PusTmReader<'_> {
fn eq(&self, other: &PusTmCreator<'_>) -> bool {
impl PartialEq<PusTmCreator<'_, '_>> for PusTmReader<'_> {
fn eq(&self, other: &PusTmCreator<'_, '_>) -> bool {
self.sp_header == other.sp_header
&& self.sec_header == other.sec_header
&& self.source_data == other.source_data
}
}
impl PartialEq<PusTmReader<'_>> for PusTmCreator<'_> {
impl PartialEq<PusTmReader<'_>> for PusTmCreator<'_, '_> {
fn eq(&self, other: &PusTmReader<'_>) -> bool {
self.sp_header == other.sp_header
&& self.sec_header == other.sec_header
@ -1125,7 +797,7 @@ mod tests {
PusTmCreator::new(&mut sph, tm_header, DUMMY_DATA, true)
}
fn base_hk_reply<'a>(timestamp: &'a [u8], src_data: &'a [u8]) -> PusTmCreator<'a> {
fn base_hk_reply<'a, 'b>(timestamp: &'a [u8], src_data: &'b [u8]) -> PusTmCreator<'a, 'b> {
let mut sph = SpHeader::tm_unseg(0x123, 0x234, 0).unwrap();
let tc_header = PusTmSecondaryHeader::new_simple(3, 5, timestamp);
PusTmCreator::new(&mut sph, tc_header, src_data, true)