History¶
Release 2.1.1 (2023-07-17)¶
- Added a .readthedocs.yaml configuration file.
Release 2.1.0 (2023-07-17)¶
New features:
- Support for 64-bit integers in read_long() and write_long().
- Allow an external serial port object to be used in the Instrument constructor.
Other fixes:
- Change internal data representation to Python bytes objects (from bytestrings).
- Allow integers in write_float(). Fixes github #78.
- Adapt style to linting tools.
- Improve Github Action script.
- Improve scripts for tests on the Delta DTB4824 instrument.
- Moved the contents of setup.cfg to pyproject.toml.
- Documentation updates, for example on building with Yocto.
Release 2.0.1 (2021-08-11)¶
- Improved documentation
- Finetuned Github Actions workflow
Release 2.0.0 (2021-08-10)¶
New features:
- Type hints available
- Support for broadcast (slave address 0), by Jan Breuer.
- Measurement of round-trip time
Breaking changes:
- Dropping support for Python 2
Other fixes:
- Starting to convert internal data representation as bytes (it had to be strings when supporting Python 2)
- Converted from setup.py to setup.cfg
- Use Github Actions instead of Travis CI
Release 1.0.2 (2019-08-11)¶
- Adjusted settings for hardware tests
- Improved developer documentation
Release 1.0.1 (2019-08-10)¶
- Corrected version number
Release 1.0.0 (2019-08-10)¶
New features:
- Implements reading and writing multiple bits simultaneously.
- Support more byteorders (endianness) for floats and long integers.
Breaking changes:
- Renamed method arguments ‘numberOfDecimals’, ‘numberOfRegisters’ to ‘number_of_decimals’, ‘number_of_registers’
- Removed example drivers for Eurotherm 3500 and Omegacn 7500, as I no longer have access to these instruments for testing. It would great if someone would pick up support for these instruments in a separate project.
- Requires pyserial 3.0 or later.
- Removed module level constants for default values, as they were confusingly named.
Other fixes:
- Allow slave addresses also in the reserved range (up to 255). Reported by GitHub user gnbl.
- Serial port read and write buffers are cleared before each request to the instrument. Pull request from GitHub user mrrs6.
- Check whether the serial port is open before trying to open it. Reported by Matthias Bolte.
- Custom exceptions for Modbus errors, by Russ Garrett.
- Silent period between messages is at least 1.75 ms to fulfill Modbus standard. Reported by GitHub user draput.
- Use time.monotonic if available. Suggested by Matthias Bolte.
- Implemented write timeout, to avoid hanging when writing. Instead it will raise an exception. Reported by Austin Stover.
- Better checking of number of registers when reading and writing.
- Rename internal methods and variables to be PEP8 compliant.
- Improved documentation.
Release 0.7 (2015-07-30)¶
- Faster CRC calculation by using a lookup table (thanks to Peter)
- Handling of local echo (thanks to Luca Di Gregorio)
- Improved behavior of dummy_serial (number of bytes to read)
- Improved debug messages (thanks to Dino)
- Using project setup by the cookie-cutter tool.
- Reshuffled source files and documentation.
- Moved source to GitHub from Sourceforge.
- Moved documentation to readthedocs.org
- Using the tox tool for testing on multiple Python versions.
- Using Travis CI test framework
- Using codecov.io code coverage measurement framework
- Added support for Python 3.3 and 3.4.
- Dropped support for Python 2.6.
Release 0.6 (2014-06-22)¶
- Support for Modbus ASCII mode.
Release 0.5 (2014-03-23)¶
- Precalculating number of bytes to read, in order to increase the speed.
- Better handling of several instruments on the same serial port, especially for Windows.
- Improved timing for better compliance with Modbus timing requirements.
Release 0.4 (2012-09-08)¶
- Read and write multiple registers.
- Read and write floating point values.
- Read and write long integers.
- Read and write strings.
- Support for negative numbers.
- Use of the Python struct module instead of own bit-tweaking internally.
- Improved documentation.
Release 0.3.2 (2012-01-25)¶
- Fine-tuned setup.py for smoother installation.
- Improved documentation.
Release 0.3.1 (2012-01-24)¶
- Improved requirements handling in setup.py
- Adjusted MANIFEST.in not to include doc/_templates
- Adjusted RST text formatting in README.txt
Release 0.3 (2012-01-23)¶
This is a major rewrite, but the API is backward compatible.
- Extended functionality to support more Modbus function codes.
- Option to close the serial port after each call (useful for Windows XP etc).
- Diagnostic string output available (for support).
- Debug mode available.
- Improved __repr__ for Instrument instances.
- Improved Python3 compatibility.
- Improved validity checking for function arguments.
- The error messages are made more informative.
- The new example driver omegacn7500 is included.
- Unit tests included in the distribution.
- A dummy serial port for unit testing is provided (including recorded communication data).
- Updated documentation.
Release 0.2 (2011-08-19)¶
- Changes in how to reference the serial port.
- Updated documentation.
Release 0.1 (2011-06-16)¶
- First public release.