AEPEX: Decoder Created

python/satyaml/AEPEX.yml

@@ -0,0 +1,20 @@
+name: AEPEX
+norad: 98864
+data:
+  &tlm Telemetry:
+    telemetry: 
+transmitters:
+  9k6 FSK downlink:
+    frequency: 437.325e+6
+    modulation: FSK
+    baudrate: 9600
+    framing: AX.25 G3RUH
+    data:
+    - *tlm
+  19k6 FSK downlink:
+    frequency: 437.325e+6
+    modulation: FSK
+    baudrate: 19200
+    framing: AX.25 G3RUH
+    data:
+    - *tlm

python/telemetry/CMakeLists.txt

@@ -33,6 +33,8 @@ GR_PYTHON_INSTALL(
     FILES
     __init__.py
     aausat4.py
+    aepex_70cm.py
+    aepex_sw_stat.py
     amicalsat.py
     au03.py
     ax25.py

python/telemetry/__init__.py

@@ -19,6 +19,7 @@
 import construct
 
 from .aausat4 import aausat4
+from .aepex_70cm import aepex_70cm
 from .amicalsat import amicalsat
 from .au03 import au03
 from .ax25 import ax25

python/telemetry/aepex_70cm.py

@@ -0,0 +1,48 @@
+# Copyright 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024  Daniel Estevez
+# <[email protected]>
+# Copyright 2024 The Regents of the University of Colorado
+#
+# This file is part of gr-satellites
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+from datetime import datetime
+from construct import Adapter, BitsInteger, BitStruct, Container, Enum, \
+    Flag, GreedyBytes, If, Int8ub, Int16ub, Int32ub, \
+    Padding, RawCopy, Struct, Switch
+from .ax25 import Header
+from ..ccsds import space_packet as ccsds_space_packet
+
+from .aepex_sw_stat import aepex_sw_stat
+
+PrimaryHeader = BitStruct(
+    'VERSION' / BitsInteger(3),
+    'TYPE' / BitsInteger(1),
+    'SEC_HDR_FLAG' / BitsInteger(1),
+    'PKT_APID' / BitsInteger(11),
+    'SEQ_FLGS' / BitsInteger(2),
+    'SEQ_CTR' / BitsInteger(14),
+    'PKT_LEN' / BitsInteger(16),
+)
+
+SecondaryHeader = BitStruct(
+    'SHCOARSE' / BitsInteger(32),
+    'SHFINE' / BitsInteger(16)
+)
+
+aepex_70cm = Struct(
+    'ax25_header' / Header,
+    'primary_header' / PrimaryHeader,
+    'secondary_header' / If(
+        lambda c: c.primary_header.SEC_HDR_FLAG,
+        SecondaryHeader
+    ),
+    'packet' / Switch(
+        lambda c: c.primary_header.PKT_APID,
+        {
+            0x01: aepex_sw_stat
+        }
+    )
+
+)