fixing a crc bug - but origin not found yet

modem/arq_session.py

@@ -33,7 +33,7 @@ class ARQSession:
         3: {
             'mode': codec2.FREEDV_MODE.data_ofdm_2438,
             'min_snr': 7,
-            'duration_per_frame': 2.5,
+            'duration_per_frame': 6.5,
             'bandwidth': 2438,
         },
         4: {

modem/data_frame_factory.py

@@ -249,7 +249,8 @@ class DataFrameFactory:
 
             # data is always on the last payload slots
             if item_length in ["dynamic"] and key in["data"]:
-                data = frame[buffer_position:]
+                # TODO: We need to check the "-2", for some reason the tests are failing with "-2", and real world test i failing without...
+                data = frame[buffer_position:-2]
                 item_length = len(data)
                 print("---------------------------------------------")
                 print(len(data))

tests/test_arq_session.py

@@ -160,7 +160,7 @@ class TestARQSession(unittest.TestCase):
         self.establishChannels()
         params = {
             'dxcall': "AA1AAA-1",
-            'data': base64.b64encode(np.random.bytes(100000)),
+            'data': base64.b64encode(np.random.bytes(1000)),
             'type': "raw_lzma"
         }
         cmd = ARQRawCommand(self.config, self.iss_state_manager, self.iss_event_queue, params)