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Improve simulated serial full-duplex code #41

TG9541 opened this issue Jul 22, 2017 · 1 comment


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commented Jul 22, 2017

The simulated serial interface was optimized for the "single GPIO half-duplex" use case. As a two wire interface it works well for interactive use case since there is a delay between keystrokes.
When used with programs with line buffer and no delay between characters (like e4thcom) an implementation is needed that uses independent receive and transmit states.


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commented Jul 22, 2017

Full duplex operation now works with "zero delay" between received characters (tested with W1209 and e4thcom). The serial interface simulation code was moved to include files.

@TG9541 TG9541 closed this Jul 22, 2017
hexagon5un pushed a commit to hexagon5un/stm8ef that referenced this issue Aug 8, 2017
* upstream/master: (25 commits)
  reference to Wiki updated
  library additions
  library mcu according to e4thcom convention
  some bytes saved
  some editing
  Fixes TG9541#44: XH-M188 lockup after power cycle
  fixes TG9541#43 Provide a Forth library infrastructure
  fixes TG9541#42 Improve W1209 ease of use
  fixes TG9541#42 Improve W1209 ease of use
  fixes TG9541#41: improved full duplex simulated serial
  Fix for UART simulation with 2 GPIOs
  HAS_ALIAS default on (IMMEDIATE words in RAM possible)
  SWIMCOM fix for HEADER macro, option WORDS_HWREG off
  issue TG9541#32 Build framework feature #include
  fixes TG9541#39 : underflow error message doesn't match normal pattern
  fixes TG9541#39 : underflow error message doesn't match normal pattern
  issue TG9541#32 Build framework feature: Forth application binary with uCsim
  issue TG9541#32: use telnet library
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