68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
#ifndef FSFW_TMTCPACKET_PUSTCIF_H
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#define FSFW_TMTCPACKET_PUSTCIF_H
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#include <cstdint>
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#include "fsfw/tmtcpacket/pus/PusIF.h"
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namespace ecss {
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enum AckField {
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//! No acknowledgements are expected.
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ACK_NONE = 0b0000,
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//! Acknowledgements on acceptance are expected.
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ACK_ACCEPTANCE = 0b0001,
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//! Acknowledgements on start are expected.
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ACK_START = 0b0010,
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//! Acknowledgements on step are expected.
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ACK_STEP = 0b0100,
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//! Acknowledgement on completion are expected.
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ACK_COMPLETION = 0b1000
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};
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static constexpr uint8_t ACK_ALL = ACK_ACCEPTANCE | ACK_START | ACK_STEP | ACK_COMPLETION;
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/**
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* This struct defines a byte-wise structured PUS C data Field Header.
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* Any optional fields in the header must be added or removed here.
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* Currently, the Source Id field is present with one byte.
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* No spare byte support for now.
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* @ingroup tmtcpackets
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*/
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struct PusTcDataFieldHeader {
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// Version and ACK byte, Service Byte, Subservice Byte, 2 byte Source ID
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static constexpr size_t MIN_SIZE = 5;
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uint8_t pusVersion;
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uint8_t ackFlags;
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uint8_t serviceType;
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uint8_t serviceSubtype;
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uint16_t sourceId;
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};
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} // namespace ecss
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class PusTcIF : public PusIF {
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public:
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~PusTcIF() override = default;
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static const size_t MIN_SIZE =
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(sizeof(ccsds::PrimaryHeader) + ecss::PusTcDataFieldHeader::MIN_SIZE + 2);
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/**
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* This is a getter for the packet's Ack field, which are the lowest four
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* bits of the first byte of the Data Field Header.
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*
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* It is packed in a uint8_t variable.
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* @return The packet's PUS Ack field.
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*/
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[[nodiscard]] virtual uint8_t getAcknowledgeFlags() const = 0;
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/**
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* The source ID can be used to have an additional identifier, e.g. for different ground
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* station.
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* @return
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*/
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[[nodiscard]] virtual uint16_t getSourceId() const = 0;
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};
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#endif // FSFW_TMTCPACKET_PUSTCIF_H
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