eive-tmtc/pus_tc/devs/ccsds_handler.py

# -*- coding: utf-8 -*-
"""
@file   ccsds_handler.py
@brief  Test commanding of CCSDS Handler
@author J. Meier
@date   20.11.2021
"""
import struct

from spacepackets.ecss.tc import PusTelecommand
from tmtccmd.tc import DefaultPusQueueHelper
from tmtccmd.util import ObjectIdU32


class CommandIds:
    # Configures input rate of syrlinks to 400 Khz (results in downlink rate of 200 kbps)
    SET_LOW_RATE = 0
    # Configures input rate of syrlinks to 2000 Khz (results in downlink rate of 1000 kbps)
    SET_HIGH_RATE = 1
    # Enables the syrlinks transmitter (by using RS485 enables lines)
    EN_TRANSMITTER = 2
    # Disables the syrlinks transmitter (by using RS485 enables lines)
    DIS_TRANSMITTER = 3
    # Sets an arbitrary bitrate. Normally only set low and set high rate commands should be
    # required
    ARBITRARY_BITRATE = 4
    ENABLE_TX_CLK_MANIPULATOR = 5
    DISABLE_TX_CLK_MANIPULATOR = 6
    # Tx data will be updated on rising edge of tx clock
    UPDATE_ON_RISING_EDGE = 7
    # Tx data will be updated on falling edge of tx clock
    UPDATE_ON_FALLING_EDGE = 8


def pack_ccsds_handler_test(
    object_id: ObjectIdU32, q: DefaultPusQueueHelper, op_code: str
):
    obyt = object_id.as_bytes
    q.add_log_cmd(f"Testing CCSDS handler with object id: {object_id.as_hex_string}")
    if op_code == "0":
        q.add_log_cmd("CCSDS Handler: Set low rate")
        command = obyt + struct.pack("!I", CommandIds.SET_LOW_RATE)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "1":
        q.add_log_cmd("CCSDS Handler: Set high rate")
        command = obyt + struct.pack("!I", CommandIds.SET_HIGH_RATE)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "2":
        q.add_log_cmd("CCSDS Handler: Enables the transmitter")
        command = obyt + struct.pack("!I", CommandIds.EN_TRANSMITTER)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "3":
        q.add_log_cmd("CCSDS Handler: Disables the transmitter")
        command = obyt + struct.pack("!I", CommandIds.DIS_TRANSMITTER)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "4":
        q.add_log_cmd("CCSDS Handler: Set arbitrary bitrate")
        bitrate = int(input("Specify bit rate (bps): "))
        command = (
            obyt
            + struct.pack("!I", CommandIds.ARBITRARY_BITRATE)
            + struct.pack("!I", bitrate)
        )
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "5":
        q.add_log_cmd("CCSDS Handler: Enable tx clock manipulator")
        command = obyt + struct.pack("!I", CommandIds.ENABLE_TX_CLK_MANIPULATOR)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "6":
        q.add_log_cmd("CCSDS Handler: Disable tx clock manipulator")
        command = obyt + struct.pack("!I", CommandIds.DISABLE_TX_CLK_MANIPULATOR)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "7":
        q.add_log_cmd("CCSDS Handler: Update tx data on rising edge of tx clock")
        command = obyt + struct.pack("!I", CommandIds.UPDATE_ON_RISING_EDGE)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))
    if op_code == "8":
        q.add_log_cmd("CCSDS Handler: Update tx data on falling edge of tx clock")
        command = obyt + struct.pack("!I", CommandIds.UPDATE_ON_FALLING_EDGE)
        q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=command))