663 lines
16 KiB
Python
663 lines
16 KiB
Python
# -*- coding: UTF-8 -*-
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#/**
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# * Software Name : pycrate
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# * Version : 0.4
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# *
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# * Copyright 2020. Benoit Michau. P1sec.
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# *
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# * This library is free software; you can redistribute it and/or
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# * modify it under the terms of the GNU Lesser General Public
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# * License as published by the Free Software Foundation; either
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# * version 2.1 of the License, or (at your option) any later version.
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# *
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# * This library is distributed in the hope that it will be useful,
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# * Lesser General Public License for more details.
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# *
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# * You should have received a copy of the GNU Lesser General Public
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# * License along with this library; if not, write to the Free Software
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# * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# * MA 02110-1301 USA
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# *
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# *--------------------------------------------------------
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# * File Name : pycrate_osmo/L1CTL.py
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# * Created : 2020-01-14
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# * Authors : Benoit Michau
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# *--------------------------------------------------------
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#*/
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#------------------------------------------------------------------------------#
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# osmocom-bb l1ctl_proto.h wrapper
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# https://gerrit.osmocom.org/plugins/gitiles/osmocom-bb/+/master/include/l1ctl_proto.h
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#------------------------------------------------------------------------------#
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from pycrate_core.utils import *
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from pycrate_core.elt import *
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from pycrate_core.base import *
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from pycrate_core.repr import *
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from pycrate_mobile.TS48058_Abis import *
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#------------------------------------------------------------------------------#
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# Enumerations
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#------------------------------------------------------------------------------#
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# message types
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L1CTL_NONE = 0
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L1CTL_FBSB_REQ = 1
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L1CTL_FBSB_CONF = 2
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L1CTL_DATA_IND = 3
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L1CTL_RACH_REQ = 4
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L1CTL_DM_EST_REQ = 5
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L1CTL_DATA_REQ = 6
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L1CTL_RESET_IND = 7
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L1CTL_PM_REQ = 8 # power measurement
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L1CTL_PM_CONF = 9 # power measurement
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L1CTL_ECHO_REQ = 10
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L1CTL_ECHO_CONF = 11
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L1CTL_RACH_CONF = 12
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L1CTL_RESET_REQ = 13
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L1CTL_RESET_CONF = 14
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L1CTL_DATA_CONF = 15
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L1CTL_CCCH_MODE_REQ = 16
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L1CTL_CCCH_MODE_CONF = 17
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L1CTL_DM_REL_REQ = 18
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L1CTL_PARAM_REQ = 19
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L1CTL_DM_FREQ_REQ = 20
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L1CTL_CRYPTO_REQ = 21
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L1CTL_SIM_REQ = 22
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L1CTL_SIM_CONF = 23
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L1CTL_TCH_MODE_REQ = 24
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L1CTL_TCH_MODE_CONF = 25
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L1CTL_NEIGH_PM_REQ = 26
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L1CTL_NEIGH_PM_IND = 27
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L1CTL_TRAFFIC_REQ = 28
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L1CTL_TRAFFIC_CONF = 29
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L1CTL_TRAFFIC_IND = 30
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L1CTL_BURST_IND = 31
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# configure TBF for uplink/downlink (GPRS)
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L1CTL_TBF_CFG_REQ = 32
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L1CTL_TBF_CFG_CONF = 33
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L1CTL_DATA_TBF_REQ = 34
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L1CTL_DATA_TBF_CONF = 35
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# Extended (11-bit) RACH (see 3GPP TS 05.02, section 5.2.7)
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L1CTL_EXT_RACH_REQ = 36
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L1CTLMsgType_dict = {
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0 : 'L1CTL_NONE',
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1 : 'L1CTL_FBSB_REQ',
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2 : 'L1CTL_FBSB_CONF',
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3 : 'L1CTL_DATA_IND',
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4 : 'L1CTL_RACH_REQ',
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5 : 'L1CTL_DM_EST_REQ',
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6 : 'L1CTL_DATA_REQ',
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7 : 'L1CTL_RESET_IND',
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8 : 'L1CTL_PM_REQ',
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9 : 'L1CTL_PM_CONF',
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10 : 'L1CTL_ECHO_REQ',
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11 : 'L1CTL_ECHO_CONF',
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12 : 'L1CTL_RACH_CONF',
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13 : 'L1CTL_RESET_REQ',
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14 : 'L1CTL_RESET_CONF',
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15 : 'L1CTL_DATA_CONF',
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16 : 'L1CTL_CCCH_MODE_REQ',
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17 : 'L1CTL_CCCH_MODE_CONF',
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18 : 'L1CTL_DM_REL_REQ',
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19 : 'L1CTL_PARAM_REQ',
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20 : 'L1CTL_DM_FREQ_REQ',
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21 : 'L1CTL_CRYPTO_REQ',
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22 : 'L1CTL_SIM_REQ',
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23 : 'L1CTL_SIM_CONF',
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24 : 'L1CTL_TCH_MODE_REQ',
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25 : 'L1CTL_TCH_MODE_CONF',
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26 : 'L1CTL_NEIGH_PM_REQ',
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27 : 'L1CTL_NEIGH_PM_IND',
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28 : 'L1CTL_TRAFFIC_REQ',
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29 : 'L1CTL_TRAFFIC_CONF',
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30 : 'L1CTL_TRAFFIC_IND',
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31 : 'L1CTL_BURST_IND',
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32 : 'L1CTL_TBF_CFG_REQ',
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33 : 'L1CTL_TBF_CFG_CONF',
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34 : 'L1CTL_DATA_TBF_REQ',
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35 : 'L1CTL_DATA_TBF_CONF',
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36 : 'L1CTL_EXT_RACH_REQ'
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}
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# CCCH mode
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L1CTL_CCCH_MODE_NONE = 0
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L1CTL_CCCH_MODE_NON_COMBINED = 1
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L1CTL_CCCH_MODE_COMBINED = 2
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L1CTL_CCCH_MODE_COMBINED_CBCH = 3
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L1CTLCCCHMode_dict = {
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0 : 'L1CTL_CCCH_MODE_NONE',
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1 : 'L1CTL_CCCH_MODE_NON_COMBINED',
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2 : 'L1CTL_CCCH_MODE_COMBINED',
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3 : 'L1CTL_CCCH_MODE_COMBINED_CBCH'
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}
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# TCH mode (from gsm_04_08.h)
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GSM48_CMODE_SIGN = 0x00,
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GSM48_CMODE_SPEECH_V1 = 0x01,
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GSM48_CMODE_SPEECH_EFR = 0x21,
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GSM48_CMODE_SPEECH_AMR = 0x41,
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GSM48_CMODE_DATA_14k5 = 0x0f,
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GSM48_CMODE_DATA_12k0 = 0x03,
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GSM48_CMODE_DATA_6k0 = 0x0b,
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GSM48_CMODE_DATA_3k6 = 0x23,
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GSM48ChanMode_dict = {
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0 : 'GSM48_CMODE_SIGN',
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1 : 'GSM48_CMODE_SPEECH_V1',
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33: 'GSM48_CMODE_SPEECH_EFR',
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65: 'GSM48_CMODE_SPEECH_AMR',
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15: 'GSM48_CMODE_DATA_14k5',
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3 : 'GSM48_CMODE_DATA_12k0',
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11: 'GSM48_CMODE_DATA_6k0',
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35: 'GSM48_CMODE_DATA_3k6',
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}
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# neighbour mode
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L1CTL_NEIGH_MODE_NONE = 0
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L1CTL_NEIGH_MODE_PM = 1
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L1CTL_NEIGH_MODE_SB = 2
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L1CTLNeighMode_dict = {
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0 : 'L1CTL_NEIGH_MODE_NONE',
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1 : 'L1CTL_NEIGH_MODE_PM',
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2 : 'L1CTL_NEIGH_MODE_SB'
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}
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# Coding Scheme
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L1CTL_CS_NONE = 0
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L1CTL_CS1 = 1
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L1CTL_CS2 = 2
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L1CTL_CS3 = 3
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L1CTL_CS4 = 4
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L1CTL_MCS1 = 5
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L1CTL_MCS2 = 6
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L1CTL_MCS3 = 7
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L1CTL_MCS4 = 8
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L1CTL_MCS5 = 9
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L1CTL_MCS6 = 10
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L1CTL_MCS7 = 11
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L1CTL_MCS8 = 12
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L1CTL_MCS9 = 13
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L1CTLCodScheme_dict = {
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0 : 'L1CTL_CS_NONE',
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1 : 'L1CTL_CS1',
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2 : 'L1CTL_CS2',
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3 : 'L1CTL_CS3',
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4 : 'L1CTL_CS4',
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5 : 'L1CTL_MCS1',
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6 : 'L1CTL_MCS2',
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7 : 'L1CTL_MCS3',
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8 : 'L1CTL_MCS4',
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9 : 'L1CTL_MCS5',
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10: 'L1CTL_MCS6',
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11: 'L1CTL_MCS7',
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12: 'L1CTL_MCS8',
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13: 'L1CTL_MCS9',
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}
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# baseband reset
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L1CTL_RES_T_BOOT = 0
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L1CTL_RES_T_FULL = 1
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L1CTL_RES_T_SCHED = 2
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L1CTLReset_dict = {
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0 : 'L1CTL_RES_T_BOOT',
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1 : 'L1CTL_RES_T_FULL',
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2 : 'L1CTL_RES_T_SCHED',
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}
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class ARFCNFlags(Envelope):
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_GEN = (
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Uint('PCS', bl=1),
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Uint('Uplink', bl=1),
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Uint('spare', bl=4),
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)
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class ARFCNBand(Envelope):
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_GEN = (
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ARFCNFlags('Flags'),
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Uint('ARFCN', bl=10),
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)
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#------------------------------------------------------------------------------#
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# Message parameters
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#------------------------------------------------------------------------------#
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###
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# downlink info
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# down from the BTS
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###
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class L1CTLInfoDL(Envelope):
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_GEN = (
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ChannelNumber(), # GSM 08.58 channel number (9.3.1)
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LinkIdentifier(), # GSM 08.58 link identifier (9.3.2)
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ARFCNBand('ARFCN'),
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Uint32('FrameNr'),
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Uint8('RxLevel'), # 0 .. 63 in typical GSM notation (dBm+110)
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Uint8('SNR'), # Signal/Noise Ration (dB)
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Uint8('NumBitErr'),
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Uint8('FireCRC'),
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)
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# new CCCH was found. This is following the header
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class L1CTLFBSBConf(Envelope):
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_GEN = (
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L1CTLInfoDL(),
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Uint16('InitialFreqErr'),
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Uint8('Result'),
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Uint8('BSIC')
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)
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# CCCH mode was changed
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class L1CTLCCCHModeConf(Envelope):
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_GEN = (
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Uint8('CCCHMode', dic=L1CTLCCCHMode_dict),
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Uint24('pad', rep=REPR_HEX)
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)
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# TCH mode was changed
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class L1CTLTCHModeConf(Envelope):
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_GEN = (
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L1CTLInfoDL(),
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Uint8('TCHMode', dic=GSM48ChanMode_dict),
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Uint8('AudioMode', ),
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Uint16('pad', rep=REPR_HEX)
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)
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# data on the CCCH was found. This is following the header
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class L1CTLDataInd(Envelope):
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_GEN = (
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L1CTLInfoDL(),
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Buf('Payload', bl=184, rep=REPR_HEX) # 23 bytes, GSM broadcast
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)
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# traffic from the network
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class L1CTLTrafficInd(Envelope):
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_GEN = (
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L1CTLInfoDL(),
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Buf('Payload', rep=REPR_HEX)
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)
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###
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# uplink info
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###
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class L1CTLInfoUL(Envelope):
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_GEN = (
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ChannelNumber(), # GSM 08.58 channel number (9.3.1)
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LinkIdentifier(), # GSM 08.58 link identifier (9.3.2)
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Uint16('pad', rep=REPR_HEX),
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Buf('Payload', rep=REPR_HEX)
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)
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class L1CTLInfoULTBF(Envelope):
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_GEN = (
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Uint8('TBFNumber'),
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Uint8('CodingScheme', dic=L1CTLCodScheme_dict),
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Uint16('pad', rep=REPR_HEX),
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Buf('Payload', rep=REPR_HEX)
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)
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# FBSB flags
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class L1CTLFBSBFlags(Envelope):
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_GEN = (
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Uint('pad', bl=5, rep=REPR_HEX),
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Uint('SB', bl=1),
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Uint('FB1', bl=1),
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Uint('FB0', bl=1)
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)
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# msg for FBSB_REQ
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# the l1_info_ul header is in front
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class L1CTLFBSBReq(Envelope):
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_GEN = (
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ARFCNBand('ARFCN'),
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Uint16('Timeout'), # in TDMA frames
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Uint16('FreqErrThres1'),
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Uint16('FreqErrThres2'),
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Uint8('NumFreqErrAvg'),
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L1CTLFBSBFlags(),
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Uint8('SynchInfoIdx'),
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Uint8('CCCHMode', dic=L1CTLCCCHMode_dict),
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Uint8('RXLevExp') # expected signal level
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)
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# msg for CCCH_MODE_REQ
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# the l1_info_ul header is in front
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class L1CTLCCCHModeReq(Envelope):
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_GEN = (
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Uint8('CCCHMode', dic=L1CTLCCCHMode_dict),
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Uint24('pad', rep=REPR_HEX)
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)
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# audio mode
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class L1CTLAudioMode(Envelope):
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_GEN = (
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Uint('pad', bl=4),
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Uint('RXTrafficInd', bl=1),
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Uint('RXSpeaker', bl=1),
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Uint('TXTrafficReq', bl=1),
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Uint('TXMicrophone', bl=1)
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)
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# msg for TCH_MODE_REQ
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# the l1_info_ul header is in front
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class L1CTLTCHModeReq(Envelope):
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_GEN = (
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L1CTLInfoUL(),
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Uint8('TCHMode', dic=GSM48ChanMode_dict),
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L1CTLAudioMode(),
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Uint16('pad', rep=REPR_HEX)
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)
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# msg for RACH_REQ
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# the l1_info_ul header is in front
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class L1CTLRACHReq(Envelope):
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_GEN = (
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L1CTLInfoUL(),
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Uint8('RA'),
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Uint8('Combined'),
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Uint16('Offset')
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)
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# RA: establishment cause + random ref
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# 0b101xxxxx = emergency call
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# 0b000xxxxx = LocUpdate (without NECI)
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# 0b111xxxxx = SDCCH (without NECI)
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# 0b0000xxxx = LocUpdate (with NECI)
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# 0b0001xxxx = SDCCH (with NECI)
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# msg for EXT_RACH_REQ
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# the l1_info_ul header is in front
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class L1CTLExtRACHReq(Envelope):
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_GEN = (
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L1CTLInfoUL(),
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Uint16('RA11'),
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Uint8('SynchSeq'),
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Uint8('Combined'),
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Uint16('Offset')
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)
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# the l1_info_ul header is in front
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class L1CTLParamReq(Envelope):
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_GEN = (
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L1CTLInfoUL(),
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Int8('TA'),
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Uint8('TXPower'),
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Uint16('pad', rep=REPR_HEX),
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)
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class L1CTLDataReq(Envelope):
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_GEN = (
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L1CTLInfoUL(),
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Buf('Payload', rep=REPR_HEX)
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)
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class L1CTL_H0(Envelope):
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_GEN = (
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ARFCNBand('ARFCN'),
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)
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class L1CTL_H1(Envelope):
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_GEN = (
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Uint8('HSN'),
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Uint8('MAIO'),
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Uint8('N'),
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Uint8('pad', rep=REPR_HEX)
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) + tuple(
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Uint16('MA_%i' % i) for i in range(64)
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)
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class L1CTLDMEstReq(Envelope):
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_GEN = (
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Uint8('TSC'),
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Uint8('H'),
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Alt('L1CTL_H', GEN={
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0 : L1CTL_H0(),
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1 : L1CTL_H1()},
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DEFAULT=L1CTL_H0(),
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sel=lambda self: self.get_env()['H'].get_val()),
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Uint8('TCHMode', dic=GSM48ChanMode_dict),
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L1CTLAudioMode()
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)
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class L1CTLDMFreqReq(Envelope):
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_GEN = (
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Uint16('FN'),
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Uint8('TSC'),
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Uint8('H'),
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Alt('L1CTL_H', GEN={
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0 : L1CTL_H0(),
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1 : L1CTL_H1()},
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DEFAULT=L1CTL_H0(),
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sel=lambda self: self.get_env()['H'].get_val()),
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)
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# SIM auth computation
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class L1CTLCryptoReq(Envelope):
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_GEN = (
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Uint8('Algo'),
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Uint8('KeyLen'),
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Buf('Key', rep=REPR_HEX)
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)
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def __init__(self, *args, **kwargs):
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Envelope.__init__(self, *args, **kwargs)
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self[1].set_valauto(lambda: self[2].get_len())
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self[2].set_blauto(lambda: self[1].get_val()<<3)
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# power measurement
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class L1CTLPMReq(Envelope):
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_GEN = (
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Uint8('Type'),
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Uint24('pad', rep=REPR_HEX),
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Envelope('ARFCNRange', GEN=(
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ARFCNBand('ARFCNFrom'),
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ARFCNBand('ARFCNTo'))
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))
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class L1CTLPMConf(Array):
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_GEN = Envelope('ARFCNPM', GEN=(
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Uint16('ARFCN'),
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Uint8('PM'),
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Uint8('PM2')
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))
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# demodulated burst indicator
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class L1CTLBurstInd(Envelope):
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_GEN = (
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Uint32('FrameNumber'),
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ARFCNBand('ARFCN'), # ARFCN + band + ul indicator
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ChannelNumber(), # GSM 08.58 channel number (9.3.1)
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Uint8('Flags'), # BI_FLG_xxx + burst_id = 2LSBs
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Uint8('RXLevel'), # 0 .. 63 in typical GSM notation (dBm+110)
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Uint8('SNR'), # Reported SNR >> 8 (0-255)
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Buf('Bits', bl=120, rep=REPR_HEX), # 114 bits + 2 steal bits. Filled MSB first
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)
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||
|
||
|
||
# baseband reset
|
||
class L1CTLReset(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=L1CTLReset_dict),
|
||
Uint24('pad', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
# neighbour cell measurement
|
||
class L1CTLNeighPMReq(Envelope):
|
||
_GEN = (
|
||
Uint8('N'),
|
||
Uint8('pad', rep=REPR_HEX),
|
||
Array('ARFCNs', GEN=ARFCNBand('ARFCN'), num=64),
|
||
Array('TNs', GEN=Uint8('TN'), num=64)
|
||
)
|
||
|
||
|
||
class L1CTLNeighPMInd(Array):
|
||
_GEN = Envelope('NeighPM', GEN=(
|
||
ARFCNBand('ARFCN'),
|
||
Uint8('PM'),
|
||
Uint8('PM2'),
|
||
Uint8('TN'),
|
||
Uint8('pad', rep=REPR_HEX)
|
||
))
|
||
|
||
|
||
# traffic data to network
|
||
class L1CTLTrafficReq(Envelope):
|
||
_GEN = (
|
||
L1CTLInfoUL(),
|
||
Buf('Payload', rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
# GPRS resources request
|
||
class L1CTLTBFCfgReq(Envelope):
|
||
_GEN = (
|
||
Uint8('TBFNumber'), # future support for multiple concurrent TBFs. 0 for now
|
||
Uint8('IsUplink'), # is this about an UL TBF (1) or DL (0)
|
||
Uint16('pad', rep=REPR_HEX),
|
||
Array('USFs', GEN=Uint8('USF', val=0xff), num=8) # one USF for each TN, or 255 for invalid/unused
|
||
)
|
||
|
||
|
||
#------------------------------------------------------------------------------#
|
||
# L1CTL Message
|
||
#------------------------------------------------------------------------------#
|
||
|
||
class L1CTLHdr(Envelope):
|
||
_GEN = (
|
||
Uint8('Type', dic=L1CTLMsgType_dict),
|
||
Uint8('Flags'),
|
||
Uint16('pad', bl=16, rep=REPR_HEX)
|
||
)
|
||
|
||
|
||
class L1CTLMsg(Envelope):
|
||
_GEN = (
|
||
L1CTLHdr(),
|
||
Alt('Params', hier=1, GEN={
|
||
1 : L1CTLFBSBReq(),
|
||
2 : L1CTLFBSBConf(),
|
||
3 : L1CTLDataInd(),
|
||
4 : L1CTLRACHReq(),
|
||
5 : L1CTLDMEstReq(),
|
||
6 : L1CTLDataReq(),
|
||
7 : L1CTLReset(),
|
||
8 : L1CTLPMReq(),
|
||
9 : L1CTLPMConf(),
|
||
10 : Buf('Payload', rep=REPR_HEX),
|
||
11 : Buf('Payload', rep=REPR_HEX),
|
||
12 : L1CTLInfoDL('L1CTLRACHConf'),
|
||
13 : L1CTLReset(),
|
||
14 : L1CTLReset(),
|
||
15 : L1CTLDataInd(),
|
||
16 : L1CTLCCCHModeReq(),
|
||
17 : L1CTLCCCHModeConf(),
|
||
18 : Buf('none', rep=REPR_HEX), # ?
|
||
19 : L1CTLParamReq(),
|
||
20 : L1CTLDMFreqReq(),
|
||
21 : L1CTLCryptoReq(),
|
||
22 : Buf('APDU', rep=REPR_HEX),
|
||
23 : Buf('APDU', rep=REPR_HEX),
|
||
24 : L1CTLTCHModeReq(),
|
||
25 : L1CTLTCHModeConf(),
|
||
26 : L1CTLNeighPMReq(),
|
||
27 : L1CTLNeighPMInd(),
|
||
28 : L1CTLTrafficReq(),
|
||
29 : Buf('none', rep=REPR_HEX), # ?
|
||
30 : L1CTLTrafficInd(),
|
||
31 : L1CTLBurstInd(),
|
||
32 : L1CTLTBFCfgReq(),
|
||
33 : Buf('none', rep=REPR_HEX), # ?
|
||
#34 : ???
|
||
#35 : ???
|
||
36 : L1CTLExtRACHReq()
|
||
},
|
||
DEFAULT=Buf('unk', rep=REPR_HEX),
|
||
sel=lambda self: self.get_env()[0][0].get_val())
|
||
)
|
||
|
||
|
||
|
||
|
||
'''
|
||
0 : 'L1CTL_NONE',
|
||
1 : 'L1CTL_FBSB_REQ', #
|
||
2 : 'L1CTL_FBSB_CONF', #
|
||
3 : 'L1CTL_DATA_IND', #
|
||
4 : 'L1CTL_RACH_REQ', #
|
||
5 : 'L1CTL_DM_EST_REQ', #
|
||
6 : 'L1CTL_DATA_REQ', #
|
||
7 : 'L1CTL_RESET_IND', #
|
||
8 : 'L1CTL_PM_REQ', #
|
||
9 : 'L1CTL_PM_CONF', #
|
||
10 : 'L1CTL_ECHO_REQ', #
|
||
11 : 'L1CTL_ECHO_CONF', #
|
||
12 : 'L1CTL_RACH_CONF', #
|
||
13 : 'L1CTL_RESET_REQ', #
|
||
14 : 'L1CTL_RESET_CONF', #
|
||
15 : 'L1CTL_DATA_CONF', #
|
||
16 : 'L1CTL_CCCH_MODE_REQ', #
|
||
17 : 'L1CTL_CCCH_MODE_CONF', #
|
||
18 : 'L1CTL_DM_REL_REQ', #
|
||
19 : 'L1CTL_PARAM_REQ', #
|
||
20 : 'L1CTL_DM_FREQ_REQ', #
|
||
21 : 'L1CTL_CRYPTO_REQ', #
|
||
22 : 'L1CTL_SIM_REQ', #
|
||
23 : 'L1CTL_SIM_CONF', #
|
||
24 : 'L1CTL_TCH_MODE_REQ', #
|
||
25 : 'L1CTL_TCH_MODE_CONF', #
|
||
26 : 'L1CTL_NEIGH_PM_REQ', #
|
||
27 : 'L1CTL_NEIGH_PM_IND', #
|
||
28 : 'L1CTL_TRAFFIC_REQ',
|
||
29 : 'L1CTL_TRAFFIC_CONF',
|
||
30 : 'L1CTL_TRAFFIC_IND',
|
||
31 : 'L1CTL_BURST_IND',
|
||
32 : 'L1CTL_TBF_CFG_REQ',
|
||
33 : 'L1CTL_TBF_CFG_CONF',
|
||
34 : 'L1CTL_DATA_TBF_REQ',
|
||
35 : 'L1CTL_DATA_TBF_CONF',
|
||
36 : 'L1CTL_EXT_RACH_REQ'
|
||
'''
|