How can I write data to serial while reading data from it

[kvinwang]

How can I write data to serial while reading data from it

[euantorano]

Async support is here now, in #9 @r3d9u11. I haven't yet tested this on Linux or Mac at all, but have tested on Windows 10 and it's functioning well. Once I test on Mac and Linux later on today I will merge it and tag a new release.

[euantorano]

Hi, sorry I’ve been really busy. I still mean to implement an AsyncSerialPort. I’ll try find some time to do it during June.

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On 31 May 2018, at 19:11, r3d9u11 ***@***.***> wrote: @LoongW @euantorano Hi! I tried this code, but compilation failed :( Is there any news about this issue? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[euantorano]

You could do it multithreaded by making the serial port instance a shared object (or by passing a pinter to it to your read/write thread). I haven't written any code to do this myself before, but it should be possible. I can try it this weekend and provide an example if I get it working.

Async IO would be the best approach obviously, but I haven't yet implemented that in this library.

[kvinwang]

Sounds workable. I'll have a try. Thanks.

[kvinwang]

The multithreaded way is so tedious in Nim.
Eventually, I chose the async way, with some modification of serial.nim:

• Add async flag for the open, and add a getFileHandle for SerialPort.

proc test() {.async.} =
  let port = newSerialPort("COM1")
  port.open(57600, Parity.None, 8, StopBits.One, async=true)
  let com = port.getFileHandle().AsyncFd.newAsyncFile()
  while true:
    echo await com.readLine()

waitFor test()

This way seems simpler and more flexible.

[euantorano]

Nice. Did you test this on Windows at all or just on Linux?

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On 4 Dec 2017, at 03:01, loongw ***@***.***> wrote: The multithreaded way is so tedious in Nim. Eventually, I chose the async way, with some modification of serial.nim: Add async flag for the open, and add a getFileHandle for SerialPort. proc test() {.async.} = let port = newSerialPort("COM1") port.open(57600, Parity.None, 8, StopBits.One, async=true) let com = port.getFileHandle().AsyncFd.newAsyncFile() while true: echo await com.readLine() waitFor test() This way seems simpler and more flexible. — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

[kvinwang]

My app is for Windows, so I tested only on Windows XP so far.
Will test it on macOS and Linux when I am free.

[R3D9477]

@LoongW @euantorano Hi!
I tried this code, but compilation was failed :(
Is there any news about this issue?