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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2020 Daniel Estevez <daniel@destevez.net>
#
# This file is part of gr-satellites
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
from construct import *
from ..adapters import AffineAdapter, LinearAdapter
TMPrimaryHeader = BitStruct(
'transfer_frame_version_number' / BitsInteger(2),
'spacecraft_id' / BitsInteger(10),
'virtual_channel_id' / BitsInteger(3),
'ocf_flag' / Flag,
'master_channel_frame_count' / BitsInteger(8),
'virtual_channel_frame_count' / BitsInteger(8),
'first_header_pointer' / BitsInteger(8)
)
syncA = bytes([0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
0x00, 0x00, 0x08, 0x77, 0x80, 0x00, 0x00, 0x63])
syncB = bytes([0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x00, 0x26])
IVbat = LinearAdapter(2.5, Int16sb)
UVbat = LinearAdapter(2000.0, Int16sb)
Id = BitStruct(
'other' / BitsInteger(13),
'transponder' / Flag,
'beacon' / Flag,
'telemetry' / Flag
)
hk_STM32_first_half = Struct(
'id' / Id,
'config' / Int8ub,
'last_command' / Int8ub,
'payload_mode' / Int8ub,
'tx_mode' / Int8ub,
'gain_tx' / Int16sb,
'i_3v3' / LinearAdapter(10.0, Int16sb),
'u_3v3' / LinearAdapter(2000.0, Int16sb),
'i_vbat_tx' / IVbat,
'u_vbat_tx' / UVbat,
'i_vbat_rx' / IVbat,
'u_vbat_rx' / UVbat,
't_stm32' / AffineAdapter(1.0/0.29296875,
(304.0 - 25.0) / 0.29296875, Int16sb),
't_pa' / LinearAdapter(8.0*16.0, Int16sb),
'n_tx_rf' / Int16ub,
'n_rx_rf' / Int16ub,
'n_tx_err_rf' / Int16ub,
'n_rx_err_rf' / Int16ub,
'n_tx_can' / Int16ub,
'n_rx_can' / Int16ub,
'n_tx_err_can' / Int16ub,
'n_rx_err_can' / Int16ub,
'n_tc' / Int32ub,
'dc_fm_tc' / Int16sb,
'dc_fm_ham' / Int16sb,
'rssi_fm_tc' / Int32ub,
'rssi_fm_ham' / Int32ub,
'reset_flag' / Int8ub,
'sys_flag' / Int8ub,
'dma_overflow' / Int16ub,
'runtime_msb' / Int16ub
)
hk_STM32_second_half = Struct(
'runtime_lsb' / Int16ub,
'reset_count' / Int32ub,
'ctcss_count' / Int32ub,
'ctcss_det' / Float32b
)
hk_AVR = Struct(
'adf7021_ld' / Int8ub,
'err_flag' / Int8ub,
'callsign' / Bytes(6),
'n_tx_232' / Int16ub,
'n_rx_232' / Int16ub,
'runtime' / Int32ub,
'rssi_analog' / Int8ub,
'n_rssi_const' / Int8ub,
'unlock_count' / Int8ub,
'reset_flag' / Int8ub,
'reset_count' / Int32ub
)
frameA = Struct(
'header' / TMPrimaryHeader,
Const(syncA),
'hk_STM32_first' / hk_STM32_first_half
)
frameB = Struct(
'header' / TMPrimaryHeader,
Const(syncB),
'hk_STM32_second' / hk_STM32_second_half,
'hk_AVR' / hk_AVR,
'padding' / Bytes(30)
)
framePadding = Struct(
'header' / TMPrimaryHeader,
'padding' / Bytes(76)
)
by02 = Select(frameA, frameB, framePadding)
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