37 lines
1.0 KiB
C++
37 lines
1.0 KiB
C++
#ifndef CCSDS_HEADER_H_
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#define CCSDS_HEADER_H_
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#include <cstdint>
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namespace ccsds {
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enum PacketType : uint8_t { TM = 0, TC = 1 };
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enum SequenceFlags : uint8_t {
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CONTINUATION = 0b00,
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FIRST_SEGMENT = 0b01,
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LAST_SEGMENT = 0b10,
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UNSEGMENTED = 0b11
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};
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static const uint16_t LIMIT_APID = 2048; // 2^11
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static const uint16_t LIMIT_SEQUENCE_COUNT = 16384; // 2^14
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static const uint16_t APID_IDLE_PACKET = 0x7FF;
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constexpr uint16_t getSpacePacketIdFromApid(bool isTc, uint16_t apid,
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bool secondaryHeaderFlag = true) {
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return ((isTc << 4) | (secondaryHeaderFlag << 3) | ((apid >> 8) & 0x07)) << 8 | (apid & 0x00ff);
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}
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constexpr uint16_t getTcSpacePacketIdFromApid(uint16_t apid, bool secondaryHeaderFlag) {
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return getSpacePacketIdFromApid(true, apid, secondaryHeaderFlag);
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}
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constexpr uint16_t getTmSpacePacketIdFromApid(uint16_t apid, bool secondaryHeaderFlag) {
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return getSpacePacketIdFromApid(false, apid, secondaryHeaderFlag);
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}
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} // namespace ccsds
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#endif /* CCSDS_HEADER_H_ */
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