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Using for example serial-term, or in lisp make-serial-process one can open a serial port within Emacs. But both will fail if the tty is access on a remote computer thought tramp.

Is there any alternative to using a remote Emacs for this?

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  • On a similar note, we can't use TRAMP paths even for local serial devices (e.g. /su::/dev/ttyS0), which I could imagine as coming in handy if the device's permissions won't normally let you use it.
    – PythonNut
    Feb 22 '16 at 14:48
  • Could you please elaborate what you are trying to achieve? Tramp over serial line or something another? Jun 21 '17 at 14:50
  • it's serial line over tramp: the tty is not on the local computer, but on another computer. I've a device controlled by serial line, connected to a remote computer, and I want to control it from my local computer. I can do it in shell using ssh then Emacs then serial-term, but I can't control it from my local Emacs then tramp then serial-term.
    – Rémi
    Jun 22 '17 at 6:17
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Tramp doesn't support this, and I have also no plans to implement. But if somebody wants to volunteer an implementation, pls contact me or the the Tramp ML tramp-devel@gnu.org.

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  • Could this be implemented without knowing C?
    – PythonNut
    Feb 22 '16 at 23:44
  • Don't know, haven't investigated yet. But if it goes into Tramp it must be Lisp. Feb 23 '16 at 7:06

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