refactor: move example APID constants to common.py and replace with UnsignedByteField

common.py

@@ -1,32 +1,30 @@
 import logging
 import sys
 from pathlib import Path
-from typing import Optional, Sequence
+from typing import cast
 
-from spacepackets import SpacePacket, SpacePacketHeader, PacketTypes
+from spacepackets import SpacePacket, SpacePacketHeader
+from spacepackets.ccsds import SPACE_PACKET_HEADER_SIZE
 from spacepackets.cfdp import (
-    TransmissionModes,
-    PduType,
-    DirectiveType,
-    GenericPduPacket,
-    PduHolder,
-    PduFactory,
-    ChecksumTypes,
+    TransmissionMode,
+    ChecksumType,
     ConditionCode,
+    PduHolder,
+    DirectiveType,
+    PduFactory,
+    PduType,
 )
+from spacepackets.cfdp.pdu import MetadataPdu, FileDataPdu
 from tmtccmd.cfdp import (
-    RemoteEntityCfgTable,
     RemoteEntityCfg,
     LocalEntityCfg,
     CfdpUserBase,
     IndicationCfg,
     TransactionId,
 )
-from spacepackets.util import UnsignedByteField
-from tmtccmd.cfdp.defs import CfdpRequestType, CfdpStates
-from tmtccmd.cfdp.handler import SourceHandler, DestHandler
+from tmtccmd.cfdp.defs import CfdpRequestType
+from tmtccmd.cfdp.handler import CfdpInCcsdsHandler
 from tmtccmd.cfdp.mib import DefaultFaultHandlerBase
-from tmtccmd.cfdp.request import PutRequest, PutRequestCfg
 from tmtccmd.cfdp.user import (
     FileSegmentRecvdParams,
     MetadataRecvParams,
@@ -36,7 +34,7 @@ from tmtccmd.config.args import ProcedureParamsWrapper
 from tmtccmd.logging import get_current_time_string
 from tmtccmd.pus.pus_11_tc_sched import Subservices as Pus11Subservices
 from tmtccmd.tc.queue import DefaultPusQueueHelper
-from tmtccmd.util import FileSeqCountProvider, PusFileSeqCountProvider, ProvidesSeqCount
+from tmtccmd.util import FileSeqCountProvider, PusFileSeqCountProvider
 from tmtccmd.util.tmtc_printer import FsfwTmTcPrinter
 
 try:
@@ -62,22 +60,22 @@ from common_tmtc.pus_tc.service_20_parameters import pack_service20_commands_int
 from common_tmtc.pus_tc.service_2_raw_cmd import pack_service_2_commands_into
 from common_tmtc.pus_tc.service_3_housekeeping import pack_service_3_commands_into
 from common_tmtc.pus_tc.service_8_func_cmd import pack_service_8_commands_into
-from examples.tmtcc import (
-    EXAMPLE_PUS_APID,
-    EXAMPLE_CFDP_APID,
-    CFDP_LOCAL_ENTITY_ID,
-    CFDP_REMOTE_ENTITY_ID,
-)
+from spacepackets.util import UnsignedByteField
+
+EXAMPLE_PUS_APID = 0xEF
+EXAMPLE_CFDP_APID = 0xF0
+CFDP_LOCAL_ENTITY_ID = UnsignedByteField(byte_len=2, val=1)
+CFDP_REMOTE_ENTITY_ID = UnsignedByteField(byte_len=2, val=EXAMPLE_CFDP_APID)
+
 from tmtccmd import (
     TcHandlerBase,
     get_console_logger,
     TmTcCfgHookBase,
-    BackendBase,
-    DefProcedureParams,
+    CcsdsTmtcBackend,
 )
 from tmtccmd.pus import VerificationWrapper
 from tmtccmd.tc import (
-    ProcedureHelper,
+    ProcedureWrapper,
     FeedWrapper,
     TcProcedureType,
     TcQueueEntryType,
@@ -91,6 +89,7 @@ from tmtccmd.config import (
     SetupWrapper,
     SetupParams,
     PreArgsParsingWrapper,
+    params_to_procedure_conversion,
 )
 from common_tmtc.pus_tm.factory_hook import pus_factory_hook
 
@@ -114,13 +113,13 @@ class ExampleCfdpFaultHandler(DefaultFaultHandlerBase):
 
 class ExampleCfdpUser(CfdpUserBase):
     def transaction_indication(self, transaction_id: TransactionId):
-        pass
+        LOGGER.info(f"CFDP User: Start of File {transaction_id}")
 
     def eof_sent_indication(self, transaction_id: TransactionId):
-        pass
+        LOGGER.info(f"CFDP User: EOF sent for {transaction_id}")
 
     def transaction_finished_indication(self, params: TransactionFinishedParams):
-        pass
+        LOGGER.info(f"CFDP User: {params.transaction_id} finished")
 
     def metadata_recv_indication(self, params: MetadataRecvParams):
         pass
@@ -153,137 +152,26 @@ class ExampleCfdpUser(CfdpUserBase):
         pass
 
 
-class CfdpCcsdsWrapper(SpecificApidHandlerBase):
-    def __init__(
-        self,
-        cfg: LocalEntityCfg,
-        user: CfdpUserBase,
-        remote_cfgs: Sequence[RemoteEntityCfg],
-        ccsds_apid: int,
-        cfdp_seq_cnt_provider: ProvidesSeqCount,
-        ccsds_seq_cnt_provider: ProvidesSeqCount,
-    ):
-        """Wrapper helper type used to wrap PDU packets into CCSDS packets and to extract PDU
-        packets from CCSDS packets.
-
-        :param cfg: Local CFDP entity configuration.
-        :param user: User wrapper. This contains the indication callback implementations and the
-            virtual filestore implementation.
-        :param cfdp_seq_cnt_provider: Every CFDP file transfer has a transaction sequence number.
-            This provider is used to retrieve that sequence number.
-        :param ccsds_seq_cnt_provider: Each CFDP PDU is wrapped into a CCSDS space packet, and each
-            space packet has a dedicated sequence count. This provider is used to retrieve the
-            sequence count.
-        :param ccsds_apid: APID to use for the CCSDS space packet header wrapped around each PDU.
-            This is important so that the OBSW can distinguish between regular PUS packets and
-            CFDP packets.
-        """
+class CfdpInCcsdsWrapper(SpecificApidHandlerBase):
+    def __init__(self, cfdp_in_ccsds_handler: CfdpInCcsdsHandler):
         super().__init__(EXAMPLE_CFDP_APID, None)
-        self.handler = CfdpHandler(cfg, user, cfdp_seq_cnt_provider, remote_cfgs)
-        self.ccsds_seq_cnt_provider = ccsds_seq_cnt_provider
-        self.ccsds_apid = ccsds_apid
-
-    def pull_next_dest_packet(self) -> Optional[SpacePacket]:
-        """Retrieves the next PDU to send and wraps it into a space packet"""
-        next_packet = self.handler.pull_next_dest_packet()
-        if next_packet is None:
-            return next_packet
-        sp_header = SpacePacketHeader(
-            packet_type=PacketTypes.TC,
-            apid=self.ccsds_apid,
-            seq_count=self.ccsds_seq_cnt_provider.get_and_increment(),
-            data_len=next_packet.packet_len - 1,
-        )
-        return SpacePacket(sp_header, None, next_packet.pack())
-
-    def confirm_dest_packet_sent(self):
-        self.handler.confirm_dest_packet_sent()
-
-    def pass_packet(self, space_packet: SpacePacket):
-        # Unwrap the user data and pass it to the handler
-        pdu_raw = space_packet.user_data
-        pdu_base = PduFactory.from_raw(pdu_raw)
-        self.handler.pass_packet(pdu_base)
+        self.handler = cfdp_in_ccsds_handler
 
     def handle_tm(self, packet: bytes, _user_args: any):
-        ccsds_header_raw = packet[0:6]
-        sp_header = SpacePacketHeader.unpack(ccsds_header_raw)
-        pdu = packet[6:]
-        sp = SpacePacket(sp_header, sec_header=None, user_data=pdu)
-        self.pass_packet(sp)
-
-
-class CfdpHandler:
-    def __init__(
-        self,
-        cfg: LocalEntityCfg,
-        user: CfdpUserBase,
-        seq_cnt_provider: ProvidesSeqCount,
-        remote_cfgs: Sequence[RemoteEntityCfg],
-    ):
-        self.dest_id = UnsignedByteField(EXAMPLE_PUS_APID, 2)
-        self.remote_cfg_table = RemoteEntityCfgTable()
-        self.remote_cfg_table.add_configs(remote_cfgs)
-        self.dest_handler = DestHandler(cfg, user, self.remote_cfg_table)
-        self.source_handler = SourceHandler(cfg, seq_cnt_provider, user)
-
-    def put_request(self, request: PutRequest):
-        if self.remote_cfg_table.get_cfg(request.cfg.destination_id):
-            raise ValueError(
-                f"No remote CFDP config found for entity ID {request.cfg.destination_id}"
-            )
-        self.source_handler.put_request(
-            request, self.remote_cfg_table.get_cfg(self.dest_id)
-        )
-
-    def pull_next_dest_packet(self) -> Optional[PduHolder]:
-        res = self.dest_handler.state_machine()
-        if res.states.packet_ready:
-            return self.dest_handler.pdu_holder
-        return None
-
-    def put_request_pending(self) -> bool:
-        return self.source_handler.states.state != CfdpStates.IDLE
-
-    def confirm_dest_packet_sent(self):
-        self.dest_handler.confirm_packet_sent_advance_fsm()
-
-    def pass_packet(self, packet: GenericPduPacket):
-        """This function routes the packets based on PDU type and directive type if applicable.
-
-        The routing is based on section 4.5 of the CFDP standard whcih specifies the PDU forwarding
-        procedure.
-        """
-        if packet.pdu_type == PduType.FILE_DATA:
-            self.dest_handler.pass_packet(packet)
+        # Ignore the space packet header. Its only purpose is to use the same protocol and
+        # have a seaprate APID for space packets. If this function is called, the APID is correct.
+        pdu = packet[SPACE_PACKET_HEADER_SIZE:]
+        pdu_base = PduFactory.from_raw(pdu)
+        if pdu_base.pdu_type == PduType.FILE_DATA:
+            LOGGER.info("Received File Data PDU TM")
         else:
-            if packet.directive_type in [
-                DirectiveType.METADATA_PDU,
-                DirectiveType.EOF_PDU,
-                DirectiveType.PROMPT_PDU,
-            ]:
-                # Section b) of 4.5.3: These PDUs should always be targeted towards the file
-                # receiver a.k.a. the destination handler
-                self.dest_handler.pass_packet(packet)
-            elif packet.directive_type in [
-                DirectiveType.FINISHED_PDU,
-                DirectiveType.NAK_PDU,
-                DirectiveType.KEEP_ALIVE_PDU,
-            ]:
-                # Section c) of 4.5.3: These PDUs should always be targeted towards the file sender
-                # a.k.a. the source handler
-                self.source_handler.pass_packet(packet)
-            elif packet.directive_type == DirectiveType.ACK_PDU:
-                # Section a): Recipient depends on the type of PDU that is being acknowledged.
-                # We can simply extract the PDU type from the raw stream. If it is an EOF PDU,
-                # this packet is passed to the source handler. For a finished PDU, it is
-                # passed to the destination handler
-                pdu_holder = PduHolder(packet)
-                ack_pdu = pdu_holder.to_ack_pdu()
-                if ack_pdu.directive_code_of_acked_pdu == DirectiveType.EOF_PDU:
-                    self.source_handler.pass_packet(packet)
-                elif ack_pdu.directive_code_of_acked_pdu == DirectiveType.FINISHED_PDU:
-                    self.dest_handler.pass_packet(packet)
+            if pdu_base.directive_type == DirectiveType.FINISHED_PDU:
+                LOGGER.info(f"Received Finished PDU TM")
+            else:
+                LOGGER.info(
+                    f"Received File Directive PDU with type {pdu_base.directive_type!r} TM"
+                )
+        self.handler.pass_pdu_packet(pdu_base)
 
 
 class PusHandler(SpecificApidHandlerBase):
@@ -311,12 +199,14 @@ class TcHandler(TcHandlerBase):
     def __init__(
         self,
         seq_count_provider: FileSeqCountProvider,
-        cfdp_in_ccsds_wrapper: CfdpCcsdsWrapper,
+        cfdp_in_ccsds_wrapper: CfdpInCcsdsWrapper,
         pus_verificator: PusVerificator,
         file_logger: logging.Logger,
         raw_logger: RawTmtcTimedLogWrapper,
     ):
         super().__init__()
+        self.cfdp_handler_started = False
+        self.cfdp_dest_id = CFDP_REMOTE_ENTITY_ID
         self.seq_count_provider = seq_count_provider
         self.pus_verificator = pus_verificator
         self.file_logger = file_logger
@@ -329,14 +219,17 @@ class TcHandler(TcHandlerBase):
         )
         self.cfdp_in_ccsds_wrapper = cfdp_in_ccsds_wrapper
 
-    def feed_cb(self, info: ProcedureHelper, wrapper: FeedWrapper):
+    def cfdp_done(self) -> bool:
+        return not self.cfdp_in_ccsds_wrapper.handler.put_request_pending()
+
+    def feed_cb(self, info: ProcedureWrapper, wrapper: FeedWrapper):
         self.queue_helper.queue_wrapper = wrapper.queue_wrapper
         if info.proc_type == TcProcedureType.DEFAULT:
             self.handle_default_procedure(info)
         elif info.proc_type == TcProcedureType.CFDP:
             self.handle_cfdp_procedure(info)
 
-    def handle_default_procedure(self, info: ProcedureHelper):
+    def handle_default_procedure(self, info: ProcedureWrapper):
         def_proc = info.to_def_procedure()
         service = def_proc.service
         op_code = def_proc.op_code
@@ -358,33 +251,52 @@ class TcHandler(TcHandlerBase):
             return pack_service_200_commands_into(q=self.queue_helper, op_code=op_code)
         LOGGER.warning("Invalid Service !")
 
-    def handle_cfdp_procedure(self, info: ProcedureHelper):
+    def handle_cfdp_procedure(self, info: ProcedureWrapper):
         cfdp_procedure = info.to_cfdp_procedure()
         if cfdp_procedure.cfdp_request_type == CfdpRequestType.PUT:
-            if not self.cfdp_in_ccsds_wrapper.handler.put_request_pending():
-                # put_req = cfdp_procedure.request_wrapper.to_put_request()
-                with open("/tmp/hello.txt") as of:
-                    of.write("Hello first CFDP file")
-                # TODO: Replace hardcoded put request if the request works
-                put_request_cfg = PutRequestCfg(
-                    destination_id=self.cfdp_in_ccsds_wrapper.handler.dest_id,
-                    source_file=Path("/tmp/hello.txt"),
-                    dest_file="/tmp/hello-created-by-dest.txt",
-                    closure_requested=False,
-                    trans_mode=TransmissionModes.UNACKNOWLEDGED,
+            if (
+                not self.cfdp_in_ccsds_wrapper.handler.put_request_pending()
+                and not self.cfdp_handler_started
+            ):
+                put_req = cfdp_procedure.request_wrapper.to_put_request()
+                put_req.cfg.destination_id = self.cfdp_dest_id
+                LOGGER.info(
+                    f"CFDP: Starting file put request with parameters:\n{put_req}"
                 )
-                put_req = PutRequest(put_request_cfg)
-                LOGGER.info(f"Starting put request {put_req}")
-                # TODO: Only start put request if there isn't one pending yet. The source handler
-                #       state can probably be used for this.
-                self.cfdp_in_ccsds_wrapper.handler.put_request(put_req)
-            pass
-        pass
+                self.cfdp_in_ccsds_wrapper.handler.cfdp_handler.put_request(put_req)
+                self.cfdp_handler_started = True
+
+                for source_pair, dest_pair in self.cfdp_in_ccsds_wrapper.handler:
+                    pdu, sp = source_pair
+                    pdu = cast(PduHolder, pdu)
+                    if pdu.is_file_directive:
+                        if pdu.pdu_directive_type == DirectiveType.METADATA_PDU:
+                            metadata = pdu.to_metadata_pdu()
+                            self.queue_helper.add_log_cmd(
+                                f"CFDP Source: Sending Metadata PDU for file with size "
+                                f"{metadata.file_size}"
+                            )
+                        elif pdu.pdu_directive_type == DirectiveType.EOF_PDU:
+                            self.queue_helper.add_log_cmd(
+                                f"CFDP Source: Sending EOF PDU"
+                            )
+                    else:
+                        fd_pdu = pdu.to_file_data_pdu()
+                        self.queue_helper.add_log_cmd(
+                            f"CFDP Source: Sending File Data PDU for segment at offset "
+                            f"{fd_pdu.offset} with length {len(fd_pdu.file_data)}"
+                        )
+                    self.queue_helper.add_ccsds_tc(sp)
+                    self.cfdp_in_ccsds_wrapper.handler.confirm_source_packet_sent()
+                self.cfdp_in_ccsds_wrapper.handler.source_handler.state_machine()
 
     def send_cb(self, params: SendCbParams):
         if params.entry.is_tc:
             if params.entry.entry_type == TcQueueEntryType.PUS_TC:
                 self.handle_tc_send_cb(params)
+            elif params.entry.entry_type == TcQueueEntryType.CCSDS_TC:
+                cfdp_packet_in_ccsds = params.entry.to_space_packet_entry()
+                params.com_if.send(cfdp_packet_in_ccsds.space_packet.pack())
         elif params.entry.entry_type == TcQueueEntryType.LOG:
             log_entry = params.entry.to_log_entry()
             LOGGER.info(log_entry.log_str)
@@ -407,17 +319,19 @@ class TcHandler(TcHandlerBase):
         self.file_logger.info(f"{get_current_time_string(True)}: {tc_info_string}")
         params.com_if.send(raw_tc)
 
-    def queue_finished_cb(self, info: ProcedureHelper):
-        if info is not None and info.proc_type == TcQueueEntryType.PUS_TC:
-            def_proc = info.to_def_procedure()
-            LOGGER.info(
-                f"Finished queue for service {def_proc.service} and op code {def_proc.op_code}"
-            )
+    def queue_finished_cb(self, info: ProcedureWrapper):
+        if info is not None:
+            if info.proc_type == TcQueueEntryType.PUS_TC:
+                def_proc = info.to_def_procedure()
+                LOGGER.info(
+                    f"Finished queue for service {def_proc.service} and op code {def_proc.op_code}"
+                )
+            elif info.proc_type == TcProcedureType.CFDP:
+                LOGGER.info(f"Finished CFDP queue")
+                self.cfdp_sending_done = True
 
 
-def setup_params(
-    hook_obj: TmTcCfgHookBase, proc_param_wrapper: ProcedureParamsWrapper
-) -> SetupWrapper:
+def setup_params(hook_obj: TmTcCfgHookBase) -> SetupWrapper:
     print(f"-- eive TMTC Commander --")
     print(f"-- spacepackets v{spacepackets.__version__} --")
     params = SetupParams()
@@ -428,21 +342,19 @@ def setup_params(
     post_arg_parsing_wrapper = parser_wrapper.parse(hook_obj)
     tmtccmd.init_printout(post_arg_parsing_wrapper.use_gui)
     use_prompts = not post_arg_parsing_wrapper.use_gui
+    proc_param_wrapper = ProcedureParamsWrapper()
     if use_prompts:
         post_arg_parsing_wrapper.set_params_with_prompts(params, proc_param_wrapper)
     else:
         post_arg_parsing_wrapper.set_params_without_prompts(params, proc_param_wrapper)
     params.apid = EXAMPLE_PUS_APID
-    setup_wrapper = SetupWrapper(hook_obj=hook_obj, setup_params=params)
+    setup_wrapper = SetupWrapper(
+        hook_obj=hook_obj, setup_params=params, proc_param_wrapper=proc_param_wrapper
+    )
     return setup_wrapper
 
 
-def setup_tmtc_handlers(
-    verif_wrapper: VerificationWrapper,
-    printer: FsfwTmTcPrinter,
-    raw_logger: RawTmtcTimedLogWrapper,
-) -> (CcsdsTmHandler, TcHandler):
-
+def setup_cfdp_handler() -> CfdpInCcsdsWrapper:
     fh_base = ExampleCfdpFaultHandler()
     cfdp_cfg = LocalEntityCfg(
         local_entity_id=CFDP_LOCAL_ENTITY_ID,
@@ -455,8 +367,8 @@ def setup_tmtc_handlers(
         max_file_segment_len=1024,
         check_limit=None,
         crc_on_transmission=False,
-        crc_type=ChecksumTypes.CRC_32,
-        default_transmission_mode=TransmissionModes.UNACKNOWLEDGED,
+        crc_type=ChecksumType.CRC_32,
+        default_transmission_mode=TransmissionMode.UNACKNOWLEDGED,
     )
     cfdp_seq_count_provider = FileSeqCountProvider(
         max_bit_width=16, file_name=Path("seqcnt_cfdp_transaction.txt")
@@ -465,7 +377,7 @@ def setup_tmtc_handlers(
         file_name=Path("seqcnt_cfdp_ccsds_.txt")
     )
     cfdp_user = ExampleCfdpUser()
-    cfdp_in_ccsds_handler = CfdpCcsdsWrapper(
+    cfdp_in_ccsds_handler = CfdpInCcsdsHandler(
         cfg=cfdp_cfg,
         remote_cfgs=[remote_cfg],
         ccsds_apid=EXAMPLE_CFDP_APID,
@@ -473,12 +385,21 @@ def setup_tmtc_handlers(
         cfdp_seq_cnt_provider=cfdp_seq_count_provider,
         user=cfdp_user,
     )
+    return CfdpInCcsdsWrapper(cfdp_in_ccsds_handler)
 
+
+def setup_tmtc_handlers(
+    verif_wrapper: VerificationWrapper,
+    printer: FsfwTmTcPrinter,
+    raw_logger: RawTmtcTimedLogWrapper,
+) -> (CcsdsTmHandler, TcHandler):
+    cfdp_in_ccsds_wrapper = setup_cfdp_handler()
     pus_handler = PusHandler(
         printer=printer, raw_logger=raw_logger, wrapper=verif_wrapper
     )
     ccsds_handler = CcsdsTmHandler(None)
     ccsds_handler.add_apid_handler(pus_handler)
+    ccsds_handler.add_apid_handler(cfdp_in_ccsds_wrapper)
     tc_handler = TcHandler(
         file_logger=printer.file_logger,
         raw_logger=raw_logger,
@@ -486,7 +407,7 @@ def setup_tmtc_handlers(
         seq_count_provider=PusFileSeqCountProvider(
             file_name=Path("seqcnt_pus_ccsds.txt")
         ),
-        cfdp_in_ccsds_wrapper=cfdp_in_ccsds_handler,
+        cfdp_in_ccsds_wrapper=cfdp_in_ccsds_wrapper,
     )
     return ccsds_handler, tc_handler
 
@@ -495,9 +416,13 @@ def setup_backend(
     setup_wrapper: SetupWrapper,
     tc_handler: TcHandler,
     ccsds_handler: CcsdsTmHandler,
-) -> BackendBase:
+) -> CcsdsTmtcBackend:
+    init_proc = params_to_procedure_conversion(setup_wrapper.proc_param_wrapper)
     tmtc_backend = tmtccmd.create_default_tmtc_backend(
-        setup_wrapper=setup_wrapper, tm_handler=ccsds_handler, tc_handler=tc_handler
+        setup_wrapper=setup_wrapper,
+        tm_handler=ccsds_handler,
+        tc_handler=tc_handler,
+        init_procedure=init_proc,
     )
     tmtccmd.start(tmtc_backend=tmtc_backend, hook_obj=setup_wrapper.hook_obj)
-    return tmtc_backend
+    return cast(CcsdsTmtcBackend, tmtc_backend)

pus_tc/pus_17_test.py

@@ -1,12 +1,14 @@
 from tmtccmd.pus.pus_17_test import (
     pack_service_17_ping_command,
-    pack_generic_service17_test,
 )
 from tmtccmd.tc.queue import DefaultPusQueueHelper
+from tmtccmd.logging import get_console_logger
+
+LOGGER = get_console_logger()
 
 
 def pack_service_17_commands(op_code: str, q: DefaultPusQueueHelper):
-    if op_code == "0":
+    if op_code in ["0", "ping"]:
         q.add_pus_tc(pack_service_17_ping_command())
     else:
-        pack_generic_service17_test(q=q)
+        LOGGER.warning(f"Invalid op code {op_code}")

pus_tc/service_3_housekeeping.py

@@ -1,8 +1,7 @@
 from datetime import timedelta
 
 from spacepackets.ecss.tc import PusTelecommand
-
-from deps.spacepackets.spacepackets.ecss import PusServices
+from spacepackets.ecss import PusServices
 from tmtccmd.config import TmtcDefinitionWrapper, OpCodeEntry
 from tmtccmd.tc.pus_200_fsfw_modes import pack_mode_data, Modes
 from tmtccmd.tc.pus_20_params import (