How to lower CPU usage in a very tight loop without sleep?

• libmodbus

  4 3,187 4.2 C

  A Modbus library for Linux, Mac OS, FreeBSD and Windows

I'm writing a small program that use libmodbus to communicate with other devices. And it seems that modbus protocol only has the concept of request-reply so only way I can do to get the data is to pull it with modbus_read_registers in a loop. Something like this:

• modbus-cpp

  1 18 10.0 C++

  Modbus master and slave implementation in C++

I would probably use boost::asio for that and maybe look into something this although that was just a library I found by doing a quick search online.

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• eModbus

  2 355 6.8 C++

  Modbus library for RTU, ASCII and TCP protocols. Primarily developed on and for ESP32 MCUs.

  

A quick check have me this https://github.com/eModbus/eModbus

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