# PyCCSDS
---
PyCCSDS is a library to read a data packet coming from a space mission that follows the Consultative Committee for Space Data Systems (CCSDS) standard
Current version **0.1.0**
[[_TOC_]]
## Installation
```shell
python3 -m pip install Python-CCSDS
```
## Usage
```python
from PyCCSDS.ccsds import CCSDS
dat = CCSDS('BepiColombo',packet)
```
wehre *packet* is a string with the HEX rappresentation of the pachet
## Limitation
## Data Structure
The CCSDS Header is composed by two blocks:
+ the Source Packet Header
+ the Packet Data Field
The first one il long 48 bits the second one has a varble dimension and structure depending by the type and the content of the packet. in [Figure 1](#figure-1-telemetry-packet) is reported the structure for a Telemetry Packet.
The structure of the CCSDS class follow the structure of the packet header.
```mermaid
classDiagram
CCSDS --|> SPH
CCSDS --|> PDF
SPH --|> packetID
SPH--|> sequenceControl
PDF --|> DFHeader
class CCSDS{
+ str Data
}
class DFHeader{
+ uint PUSVersion
+ uint ServiceType
+ uint ServiceSubType
+ uint DestinationId
+ uint Synchronization
+ uint CorseTime
+ uint FineTime
+ str SCET
+ str UTCTime
}
class SPH{
+ uint packetLength
}
class packetID{
+ uint VersionNum
+ uint packetType
+ uint dataFieldHeaderFlag
+ uint Apid
+ uint Pid
+ uint Pcat
}
class sequenceControl{
+ bin SegmentationFlag
+ uint SSC
}
class PDF{
+str Data
}
```
#### Figure 1 - Telemetry Packet
Raw data
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"description": "# PyCCSDS\n\n---\n\nPyCCSDS is a library to read a data packet coming from a space mission that follows the Consultative Committee for Space Data Systems (CCSDS) standard\n\nCurrent version **0.1.0**\n\n[[_TOC_]]\n\n## Installation\n```shell\npython3 -m pip install Python-CCSDS\n```\n## Usage\n```python\nfrom PyCCSDS.ccsds import CCSDS\n\ndat = CCSDS('BepiColombo',packet)\n```\nwehre *packet* is a string with the HEX rappresentation of the pachet\n\n## Limitation\n\n## Data Structure\n\nThe CCSDS Header is composed by two blocks:\n+ the Source Packet Header \n+ the Packet Data Field\n\nThe first one il long 48 bits the second one has a varble dimension and structure depending by the type and the content of the packet. in [Figure 1](#figure-1-telemetry-packet) is reported the structure for a Telemetry Packet.\n\nThe structure of the CCSDS class follow the structure of the packet header.\n\n\n```mermaid\nclassDiagram\n CCSDS --|> SPH\n CCSDS --|> PDF\n SPH --|> packetID\n SPH--|> sequenceControl\n PDF --|> DFHeader\n class CCSDS{\n + str Data \n }\n class DFHeader{\n + uint PUSVersion\n + uint ServiceType\n + uint ServiceSubType\n + uint DestinationId\n + uint Synchronization\n + uint CorseTime\n + uint FineTime\n + str SCET\n + str UTCTime\n }\n class SPH{\n + uint packetLength\n }\n class packetID{\n + uint VersionNum\n + uint packetType\n + uint dataFieldHeaderFlag \n + uint Apid\n + uint Pid\n + uint Pcat\n }\n class sequenceControl{\n + bin SegmentationFlag\n + uint SSC\n }\n class PDF{\n +str Data\n }\n```\n\n![TM packet](docs/TM_Packet_Header.png \"Telemetry packet\")\n#### Figure 1 - Telemetry Packet\n",
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