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I've been reading this good article. He's been testing some libraries across the web and make some good comparison points.
Let me quote some for this particular library:
https://github.com/arduino-libraries/ArduinoModbus
- Official library from Arduino.
- Master and slave.
- Uses the RS485 library to communicate, but does not offer any way to pass a custom RS485 instance, so it is effectively hardcoded to a specific serial port.
- Offers only single value reads and writes.
- Slave stores value internally and reads/writes directly from those, without any callback or way to detect that communication has happened.
More on the page, and I hope this reference makes a good study for further improvement.
So, for my personal request, Any chance to implement to softwareSerial? So many other boards can use this library later.
Because I want the official library can cover it all.
Thanks in advance.