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possible quick and dirty fix for solving wrong byteorder problem

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DJ2LS 2023-01-01 10:56:09 +01:00
parent 250943f63f
commit dc4ea2c5dd
1 changed files with 20 additions and 0 deletions
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20
tnc/data_handler.py
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@ -669,6 +669,26 @@ class DATA:
# static.RX_FRAME_BUFFER += static.RX_BURST_BUFFER[i]
temp_burst_buffer += bytes(value) # type: ignore
# TODO: Needs to be removed as soon as mode error is fixed
# catch possible modem error which leads into false byteorder
# modem possibly decodes too late - data then is pushed to buffer
# which leads into wrong byteorder
# Lets put this in try/except so we are not crashing tnc as its hihgly experimental
# This might only work for datac1 and datac3
try:
#area_of_interest = (modem.get_bytes_per_frame(self.mode_list[speed_level] - 1) -3) * 2
if static.RX_FRAME_BUFFER.endswith(temp_burst_buffer[:246] and len(temp_burst_buffer) >= 246):
self.log.warning(
"[TNC] ARQ | RX | wrong byteorder received - dropping data"
)
# we need to run a return here, so we are not sending an ACK
return
except Exception as e:
self.log.warning(
"[TNC] ARQ | RX | wrong byteorder check failed", e=e
)
# if frame buffer ends not with the current frame, we are going to append new data
# if data already exists, we received the frame correctly,
# but the ACK frame didn't receive its destination (ISS)