HBLink/constants.py
Cort Buffington a58b076c8a Call State Tracking Now Working
This is the beginning of TGID rewrite. Next is to figure out how to
store the LC and Embedded LC values for each valid destination so they
aren’t calculated each time a packet has to be sent – should do it ONCE
per call.
2016-11-01 20:54:43 -05:00

108 lines
3.5 KiB
Python
Executable File

#!/usr/bin/env python
#
# This work is licensed under the Creative Attribution-NonCommercial-ShareAlike
# 3.0 Unported License.To view a copy of this license, visit
# http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to
# Creative Commons, 444 Castro Street, Suite 900, Mountain View,
# California, 94041, USA.
from __future__ import print_function
from bitarray import bitarray
# Does anybody read this stuff? There's a PEP somewhere that says I should do this.
__author__ = 'Cortney T. Buffington, N0MJS'
__copyright__ = 'Copyright (c) 2016 Cortney T. Buffington, N0MJS and the K0USY Group'
__credits__ = ''
__license__ = 'Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported'
__maintainer__ = 'Cort Buffington, N0MJS'
__email__ = 'n0mjs@me.com'
# Timers
STREAM_TO = .360
# HomeBrew Protocol Frame Types
HBPF_VOICE = 0x0
HBPF_VOICE_SYNC = 0x1
HBPF_DATA_SYNC = 0x2
HBPF_SLT_VHEAD = 0x1
HBPF_SLT_VTERM = 0x2
# Slot Type Data types
DMR_SLT_VHEAD = '\x01'
DMR_SLT_VTERM = '\x02'
# Sync patterns used for LC and Voice Burst A packets
BS_VOICE_SYNC = bitarray()
BS_DATA_SYNC = bitarray()
BS_VOICE_SYNC.frombytes(b'\x75\x5F\xD7\xDF\x75\xF7')
BS_DATA_SYNC.frombytes(b'\xDF\xF5\x7D\x75\xDF\x5D')
SYNC = {
'BS_VOICE': BS_VOICE_SYNC,
'BS_DATA': BS_DATA_SYNC
}
# LC Options - Use for Group Voice
LC_OPT = '\x00\x00\x20'
# Precomputed EMB values, where CC always = 1, and PI always = 0
EMB = {
'BURST_B': bitarray('0001001110010001'),
'BURST_C': bitarray('0001011101110100'),
'BURST_D': bitarray('0001011101110100'),
'BURST_E': bitarray('0001010100000111'),
'BURST_F': bitarray('0001000111100010')
}
# Precomputed Slot Type values where CC always = 1
SLOT_TYPE = {
'PI_HEAD': bitarray('00010000001101100111'),
'VOICE_LC_HEAD': bitarray('00010001101110001100'),
'VOICE_LC_TERM': bitarray('00010010101001011001'),
'CSBK': bitarray('00010011001010110010'),
'MBC_HEAD': bitarray('00010100100111110000'),
'MBC_CONT': bitarray('00010101000100011011'),
'DATA_HEAD': bitarray('00010110000011001110'),
'1/2_DATA': bitarray('00010111100000100101'),
'3/4_DATA': bitarray('00011000111010100001'),
'IDLE': bitarray('00011001011001001010'),
'1/1_DATA': bitarray('00011010011110011111'),
'RES_1': bitarray('00011011111101110100'),
'RES_2': bitarray('00011100010000110110'),
'RES_3': bitarray('00011101110011011101'),
'RES_4': bitarray('00011110110100001000'),
'RES_5': bitarray('00011111010111100011')
}
# LC infor for first 3 Bytes:
# Byte 1: PF (1),Res(1),FLCO(6) -- Byte 2: FID(8) -- Byte 3: Service Options(8)
LC_VOICE = {
'FLCO-GRP': bitarray('00000000'),
'FLCO-USR': bitarray('00000011'),
'FID-GENC': bitarray('00000000'),
'FID-MOTO': bitarray('00010000'),
'SVC-OVCM': bitarray('00100000'),
'SVC-NONE': bitarray('00000000')
}
'''
EMB: CC(4b), PI(1b), LCSS(2b), EMB Parity(9b - QR 16,7,5)
Slot Type: CC(4b), DataType(4), Slot Type Parity(12b - )
'''
#------------------------------------------------------------------------------
# Used to execute the module directly to run built-in tests
#------------------------------------------------------------------------------
if __name__ == '__main__':
from binascii import b2a_hex as h
from time import time
from pprint import pprint
pprint(SYNC)
pprint(EMB)
pprint(SLOT_TYPE)
print(LC_OPT)