# Consultative Committee for Space Data Systems (CCSDS) Space Packet Defenition
# Primary Header + Raw Payload
# Ref: https://public.ccsds.org/Pubs/133x0b2e1.pdfa
#
# Example Packet:
# [0xe0, 0xa1, 0xc0, 0x00, 0x00, 0x05, 0x01, 0x02, 0x03, 0x04, 0x05]

# CCSDS packet w/ primary header + payload
[[formats]]
name = "ccsds"
bit_flip = false

[[formats.fields]]
name = "Version Number"
bit_flip = true
field_type = {type = "UInt", bit_width = 3, endianness = "BigEndian"}

[[formats.fields]]
name = "Packet Type"
bit_flip = true
field_type = {type = "UInt", bit_width = 1, endianness = "BigEndian"}

[[formats.fields]]
name = "Secondary Header Flag"
bit_flip = true
field_type = {type = "UInt", bit_width = 1, endianness = "BigEndian"}

[[formats.fields]]
name = "APID"
bit_flip = true
print_type = {print = "Base", base = 16}
field_type = {type = "UInt", bit_width = 11, endianness = "BigEndian"}

[[formats.fields]]
name = "Sequence Flags"
bit_flip = true
field_type = {type = "UInt", bit_width = 2,  endianness = "BigEndian"}

[[formats.fields]]
name = "Packet Sequence Count"
bit_flip = true
field_type = {type = "UInt", bit_width = 14, endianness = "BigEndian"}

[[formats.fields]]
name = "Data Length"
field_type = {type = "UInt", bit_width = 16, endianness = "BigEndian"}

[[formats.fields]]
name = "Data"
# Allow payloads up to the max size that can be specfied in "Data Length"
field_type = {type = "Bytes", max_len = 65535, endianness = "BigEndian"}

# CCSDS packet w/ primary header + secondary header + payload
[[formats]]
name = "ccsds_sec"
bit_flip = false

[[formats.fields]]
name = "Version Number"
bit_flip = true
field_type = {type = "UInt", bit_width = 3, endianness = "BigEndian"}

[[formats.fields]]
name = "Packet Type"
bit_flip = true
field_type = {type = "UInt", bit_width = 1, endianness = "BigEndian"}

[[formats.fields]]
name = "Secondary Header Flag"
bit_flip = true
field_type = {type = "UInt", bit_width = 1, endianness = "BigEndian"}

[[formats.fields]]
name = "APID"
bit_flip = true
print_type = {print = "Base", base = 16}
field_type = {type = "UInt", bit_width = 11, endianness = "BigEndian"}

[[formats.fields]]
name = "Sequence Flags"
bit_flip = true
field_type = {type = "UInt", bit_width = 2,  endianness = "BigEndian"}

[[formats.fields]]
name = "Packet Sequence Count"
bit_flip = true
field_type = {type = "UInt", bit_width = 14, endianness = "BigEndian"}

[[formats.fields]]
name = "Data Length"
field_type = {type = "UInt", bit_width = 16, endianness = "BigEndian"}

[[formats.fields]]
name = "Secondary header"
field_type = {type = "Bytes", max_len = 8, endianness = "BigEndian"}

[[formats.fields]]
name = "data"
# allow payloads up to the max size that can be specfied in "data length"
field_type = {type = "Bytes", max_len = 65535, endianness = "BigEndian"}