Python & Arduino communication with serial port

[DaveX]

You can send and parse numbers a character at a time, like "12345d" for a delay of 12345.

Look at the pcRead example:

@DaveX

• pcRead by @gcjr -- one-character parsing diagnostic/control tool (w/ Simulation).

and some of the linked Wokwi simulations:

@DaveX

Misc

• Serial parsing RPN/Postfix:
• pcRead by @gcjr -- one-character parsing diagnostic/control tool (w/ Simulation).
• Good Forum thread on parsing a line into tokens with strtok()
• My adaptations of @nickgammon's state-machine parser into a switch-case single-letter post-fix parser for commands and numbers. E.g. 4500R 80S 3G or '123 24 /p`:
  • V1: Simple RPN number and command parsing and
  • V2: RPN 4 function calculator+commands
  • V3: Serial control of Stepper speed, acceleration and motion control with RPN calc -- Use Serial to control a stepper with real-time adjustment of Acceleration, Maximum speed and Position, with 4-function calculator.
• G-code parsers, commonly used in CNCs, 3Dprinters, laser cutters
  • Marginally Clever G-code parser -- Accumulates a line of serial into a buffer then processes it. Written such that the parsing characters could be made non-blocking with a substitution of an 'while' with an 'if' in the loop(){}
  • grbl -- buffer characters and parse on end-of-line
  • Teacup 3DP firmware -- parse a character at a time
  • Marlin -- parse a buffered line.

This does a lot with single character-at-a-time processing:

StepperWithSerialParsingRPNExample - Wokwi ESP32, STM32, Arduino Simulator