Bugfix/values spikes #408
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Bugfix/values spikes #408
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- Introduced `current_sequence_number` attribute to track the sequence number. - Added `advance_sequence_number` method to generate and increment the sequence number. - Updated `write_register` and `read_holding_registers` methods to utilize the new sequence number for packet validation.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #408 +/- ##
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+ Coverage 71.00% 72.73% +1.72%
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Files 26 26
Lines 1914 1962 +48
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+ Hits 1359 1427 +68
+ Misses 555 535 -20 ☔ View full report in Codecov by Sentry. |
- Introduced `validate_modbus_crc` method to check the integrity of Modbus frames. - Added `validate_packet` method to ensure received packets conform to expected structure and CRC. - Updated `read_holding_registers` to validate response packets before returning registers. - Defined a constant `POLY` for Modbus CRC polynomial. These enhancements improve the reliability of communication with Modbus devices.
- Updated the extraction of the Modbus frame to include the CRC byte for improved validation. - Added detailed logging for extracted Modbus frames and calculated CRC values to aid in debugging. - Introduced a new `calculate_modbus_crc` function in tests to ensure accurate CRC calculations for Modbus frames. - Enhanced unit tests to validate the reading and writing of registers, ensuring proper interaction with the Modbus client. These changes improve the reliability and traceability of Modbus communication in the SolarmanSunsynk implementation.
- Introduced multiple test cases for validating Modbus packets, including checks for invalid start/stop bytes, sequence numbers, CRC, and length. - Enhanced error handling in connection and disconnection scenarios. - Improved write_register method to handle timeout and general exceptions effectively. These additions strengthen the reliability and robustness of the SolarmanSunsynk's Modbus communication and error management.
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This was referenced Jan 23, 2025
kellerza
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Add sequence number management for packet validation in SolarmanSunsynk
Add Modbus packet validation methods in SolarmanSunsynk
Enhance Modbus frame handling in SolarmanSunsynk
current_sequence_numberattribute to track the sequence number.advance_sequence_numbermethod to generate and increment the sequence number.write_registerandread_holding_registersmethods to utilize the new sequence number for packet validation.validate_modbus_crcmethod to check the integrity of Modbus frames.validate_packetmethod to ensure received packets conform to expected structure and CRC.read_holding_registersto validate response packets before returning registers.POLYfor Modbus CRC polynomial.calculate_modbus_crcfunction in tests to ensure accurate CRC calculations for Modbus frames.Related PR & issues: