Pass a partially received response in the ValueError exception. #113
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Allow better debugging when an incomplete response was received or timed out. The already received part (empty on timeout) is passed as the first and only argument in the ValueError exception, accessible as e.args[0] in a handler.
When a serial CRC validation fails, the exception is constructed with a descriptive text as its only argument. To aid in debugging, pass in the original failing message instead. Make sure the string representation of the exception stays the same, by adding a __str__() method like in the library's other exceptions.
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Applied the same treatment to the CRCError class, which is also useful in debugging. |
alexrudd2
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Oct 9, 2025
Allow better debugging when an incomplete response was received or timed out. The already received part (empty on timeout) is passed as the first and only argument in the ValueError exception, accessible as e.args[0] in a handler. Via AdvancedClimateSystems#113
alexrudd2
pushed a commit
to alexrudd2/uModbus
that referenced
this pull request
Oct 9, 2025
When a serial CRC validation fails, the exception is constructed with a descriptive text as its only argument. To aid in debugging, pass in the original failing message instead. Make sure the string representation of the exception stays the same, by adding a __str__() method like in the library's other exceptions. Via AdvancedClimateSystems#113
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Allow better debugging when an incomplete response was received or
timed out. The already received part (empty on timeout) is passed as
the first and only argument in the ValueError exception, accessible as
e.args[0] in a handler.
I find the choice of
ValueErrorexception kind of confusing for this type of error, but anything else would break compatibility. So I opted to just add the (partial) response verbatim as an argument. If it is empty, aTimeoutErroror similar might be easier to understand?