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require this for less duplicate code
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This commit is contained in:
Robin Müller 2023-07-02 18:38:18 +02:00
parent 1ddfc432f3
commit ec5d98a9b5
Signed by: muellerr
GPG Key ID: A649FB78196E3849
4 changed files with 89 additions and 78 deletions
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3
CHANGELOG.md
View File

@ -16,7 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
- `GenericUnsignedByteField<TYPE>` and helper typedefs `UnsignedU8`, `UnsignedU16`, `UnsignedU32`
and `UnsignedU64` as helper types implementing `UnsignedEnum`
- `UnsignedByteField` as a type-erased helper.
- Initial CFDP support: Added PDU packet implementation.
- Added `SerializablePusPacket` as a generic abstraction for PUS packets which are
writable.
## Changed

4
src/ecss/mod.rs
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@ -349,6 +349,10 @@ pub type EcssEnumU16 = GenericEcssEnumWrapper<u16>;
pub type EcssEnumU32 = GenericEcssEnumWrapper<u32>;
pub type EcssEnumU64 = GenericEcssEnumWrapper<u64>;
pub trait SerializablePusPacket {
fn write_to_bytes(&self, slice: &mut [u8]) -> Result<usize, PusError>;
}
#[cfg(test)]
mod tests {
use crate::ecss::{EcssEnumU16, EcssEnumU32, EcssEnumU8, UnsignedEnum};

75
src/tc.rs
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@ -34,6 +34,7 @@
use crate::ecss::{
ccsds_impl, crc_from_raw_data, crc_procedure, sp_header_impls, user_data_from_raw,
verify_crc16_ccitt_false_from_raw, CrcType, PusError, PusPacket, PusVersion,
SerializablePusPacket,
};
use crate::{
ByteConversionError, CcsdsPacket, PacketType, SequenceFlags, SizeMissmatch, CCSDS_HEADER_LEN,
@ -342,42 +343,6 @@ impl<'raw_data> PusTc<'raw_data> {
self.calc_own_crc16();
}
/// Write the raw PUS byte representation to a provided buffer.
pub 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_packed();
if total_size > slice.len() {
return Err(ByteConversionError::ToSliceTooSmall(SizeMissmatch {
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;
if let Some(app_data) = self.app_data {
slice[curr_idx..curr_idx + app_data.len()].copy_from_slice(app_data);
curr_idx += 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)
}
#[cfg(feature = "alloc")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
pub fn append_to_vec(&self, vec: &mut Vec<u8>) -> Result<usize, PusError> {
@ -453,6 +418,44 @@ impl<'raw_data> PusTc<'raw_data> {
}
}
impl SerializablePusPacket for PusTc<'_> {
/// 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_packed();
if total_size > slice.len() {
return Err(ByteConversionError::ToSliceTooSmall(SizeMissmatch {
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;
if let Some(app_data) = self.app_data {
slice[curr_idx..curr_idx + app_data.len()].copy_from_slice(app_data);
curr_idx += 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

85
src/tm.rs
View File

@ -3,6 +3,7 @@
use crate::ecss::{
ccsds_impl, crc_from_raw_data, crc_procedure, sp_header_impls, user_data_from_raw,
verify_crc16_ccitt_false_from_raw, CrcType, PusError, PusPacket, PusVersion,
SerializablePusPacket,
};
use crate::{
ByteConversionError, CcsdsPacket, PacketType, SequenceFlags, SizeMissmatch, SpHeader,
@ -318,47 +319,6 @@ impl<'raw_data> PusTm<'raw_data> {
self.calc_own_crc16();
}
/// Write the raw PUS byte representation to a provided buffer.
pub fn write_to_bytes(&self, slice: &mut [u8]) -> Result<usize, PusError> {
let mut curr_idx = 0;
let total_size = self.len_packed();
if total_size > slice.len() {
return Err(ByteConversionError::ToSliceTooSmall(SizeMissmatch {
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;
if let Some(timestamp) = self.sec_header.timestamp {
let timestamp_len = timestamp.len();
slice[curr_idx..curr_idx + timestamp_len].copy_from_slice(timestamp);
curr_idx += timestamp_len;
}
if let Some(src_data) = self.source_data {
slice[curr_idx..curr_idx + src_data.len()].copy_from_slice(src_data);
curr_idx += src_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)
}
/// Append the raw PUS byte representation to a provided [alloc::vec::Vec]
#[cfg(feature = "alloc")]
#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
@ -450,6 +410,49 @@ impl<'raw_data> PusTm<'raw_data> {
}
}
impl SerializablePusPacket for PusTm<'_> {
/// 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_packed();
if total_size > slice.len() {
return Err(ByteConversionError::ToSliceTooSmall(SizeMissmatch {
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;
if let Some(timestamp) = self.sec_header.timestamp {
let timestamp_len = timestamp.len();
slice[curr_idx..curr_idx + timestamp_len].copy_from_slice(timestamp);
curr_idx += timestamp_len;
}
if let Some(src_data) = self.source_data {
slice[curr_idx..curr_idx + src_data.len()].copy_from_slice(src_data);
curr_idx += src_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