Write one byte via RS232 from ESP32 to the scope

Receive one byte via RS232 from ESP32 to ESP32

Sending RS485 message from ESP32 by using MAX485

Modbus protocol for ESP32 in ESP IDF environment

Interaction with ESP32 in ESP IDF 5.0 environment via Mavlink protocol

From Raymond Hettinger's Transforming Code into Beautiful, Idiomatic Python