Robin Mueller
0c371623c6
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84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
#ifndef MISSION_DEVICES_DEVICEDEFINITIONS_SPBASE_H_
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#define MISSION_DEVICES_DEVICEDEFINITIONS_SPBASE_H_
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#include <fsfw/tmtcpacket/ccsds/SpacePacketCreator.h>
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#include <cstdint>
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struct SpBaseParams {
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SpBaseParams(SpacePacketCreator& creator) : creator(creator) {}
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SpBaseParams(SpacePacketCreator& creator, uint8_t* buf, size_t maxSize)
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: creator(creator), buf(buf), maxSize(maxSize) {}
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void setPayloadLen(size_t payloadLen_) { dataFieldLen = payloadLen_ + 2; }
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void setDataFieldLen(size_t dataFieldLen_) { dataFieldLen = dataFieldLen_; }
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SpacePacketCreator& creator;
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uint8_t* buf = nullptr;
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size_t maxSize = 0;
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size_t dataFieldLen = 0;
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};
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class SpacePacketBase {
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public:
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SpacePacketBase(SpBaseParams params) : spParams(params) { updateFields(); }
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SpacePacketBase(SpBaseParams params, uint16_t apid, uint16_t seqCount) : spParams(params) {
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spParams.creator.setApid(apid);
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spParams.creator.setSeqCount(seqCount);
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updateFields();
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}
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void updateFields() {
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payloadStart = spParams.buf + ccsds::HEADER_LEN;
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spParams.creator.setDataLen(spParams.dataFieldLen - 1);
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spParams.creator.setPacketType(ccsds::PacketType::TC);
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}
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const uint8_t* getFullPacket() const { return spParams.buf; }
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size_t getFullPacketLen() const { return spParams.creator.getFullPacketLen(); }
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uint16_t getApid() const { return spParams.creator.getApid(); }
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ReturnValue_t checkPayloadLen() {
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if (ccsds::HEADER_LEN + spParams.dataFieldLen > spParams.maxSize) {
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return SerializeIF::BUFFER_TOO_SHORT;
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}
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return result::OK;
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}
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ReturnValue_t serializeHeader() {
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updateFields();
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size_t serLen = 0;
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return spParams.creator.serializeBe(spParams.buf, serLen, spParams.maxSize);
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}
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ReturnValue_t checkSizeAndSerializeHeader() {
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ReturnValue_t result = checkPayloadLen();
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if (result != result::OK) {
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return result;
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}
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return serializeHeader();
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}
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ReturnValue_t calcCrc() {
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/* Calculate crc */
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uint16_t crc = CRC::crc16ccitt(spParams.buf, ccsds::HEADER_LEN + spParams.dataFieldLen - 2);
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/* Add crc to packet data field of space packet */
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size_t serializedSize = 0;
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return SerializeAdapter::serialize<uint16_t>(&crc, &payloadStart, &serializedSize, sizeof(crc),
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SerializeIF::Endianness::BIG);
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}
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protected:
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SpBaseParams spParams;
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uint8_t* payloadStart;
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};
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#endif /* MISSION_DEVICES_DEVICEDEFINITIONS_SPBASE_H_ */
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