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Add SoftwareSerial library #32

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Add SoftwareSerial library #32

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@shadow578 shadow578 commented Feb 9, 2025

Add the SoftwareSerial library.
Based on the library found in STM32duino, tho fully re-written and (imo) improved.

To-Do:

  • Full-Duplex mode (echo-back example)
  • Half-Duplex mode (e.g. Marlin TMC2208 communication)
  • dynamic baud-rate change
  • @ 8 MHz PCLK1: baud rates up to 9600 baud
  • @ 50 MHz PCLK1: baud rates up to 115200 baud
  • check compatibility (works with Marlin / TMCStepper)

Note:
this PR is a cleaned-up version of #30 (diff)

@shadow578 shadow578 force-pushed the add/softserial-clean branch from 3740abd to 55320b8 Compare February 9, 2025 10:04
@shadow578 shadow578 changed the title Add/softserial clean Add SoftwareSerial library Feb 9, 2025
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