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Fix for #1849 (PCAN fails when PCAN_ERROR_ILLDATA is read via ReadFD) #1850

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Merged
merged 2 commits into from
Sep 6, 2024
Merged

Fix for #1849 (PCAN fails when PCAN_ERROR_ILLDATA is read via ReadFD) #1850

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2ec8ac2
When there is an invalid frame on CAN bus (in our case CAN FD), PCAN …
bures Sep 4, 2024
6e7ad06
Fix for ruff error `can/interfaces/pcan/pcan.py:5:1: I001 [*] Import …
bures Sep 5, 2024
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7 changes: 7 additions & 0 deletions can/interfaces/pcan/pcan.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@
PCAN_DICT_STATUS,
PCAN_ERROR_BUSHEAVY,
PCAN_ERROR_BUSLIGHT,
PCAN_ERROR_ILLDATA,
PCAN_ERROR_OK,
PCAN_ERROR_QRCVEMPTY,
PCAN_FD_PARAMETER_LIST,
Expand Down Expand Up @@ -555,6 +556,12 @@ def _recv_internal(
elif result & (PCAN_ERROR_BUSLIGHT | PCAN_ERROR_BUSHEAVY):
log.warning(self._get_formatted_error(result))

elif result == PCAN_ERROR_ILLDATA:
# When there is an invalid frame on CAN bus (in our case CAN FD), PCAN first reports result PCAN_ERROR_ILLDATA
# and then it sends the error frame. If the PCAN_ERROR_ILLDATA is not ignored, python-can throws an exception.
# So we ignore any PCAN_ERROR_ILLDATA results here.
pass

else:
raise PcanCanOperationError(self._get_formatted_error(result))

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