如何使Scilab在Linux(Ubuntu)中使用/dev/ttyACM0 USB端口打开串行通信

问题描述

我正在尝试打开 Scilab 与Arduino之间的串行通信.但是，Linux Ubuntu始终在/dev/tty**ACM0**端口中识别Arduino.当我在Scilab中编写h=openserial(1,"9600,n,8,1)时，我知道我是在说要在Linux中打开与COM1或/dev/tty**S0**的串行通讯.

I'm trying to open a serial communication between Scilab and Arduino. However, Arduino is always recognized by Linux Ubuntu in the /dev/tty**ACM0** port. When I write h=openserial(1,"9600,n,8,1) in Scilab I know that I'm saying to it, to open a serial comunication to COM1 or /dev/tty**S0** in Linux.

但是，例如，如果我使用h=openserial(N,"9600,n,8,1)，假设使用N=port number，则在Windows中将始终具有COMN，而在Linux中将始终具有COMN.

But, for example, if I use h=openserial(N,"9600,n,8,1), assuming N=port number, I will always have COMN, in Windows and /dev/tty**S**(N-1) in Linux.

如何在Linux的Scilab中通过/dev/tty**ACM0**端口打开串行通讯?

How do I open a serial comunication through /dev/tty**ACM0** port in Scilab for Linux?

推荐答案

查看 Scilab串行通信工具箱回购中的="nofollow"> openserial.sci ，

Looking at the openserial.sci from the Serial Communication Toolbox for Scilab repo,

function h=openserial(p,smode,translation,handshake,xchar,timeout)
//port name
  if ~exists("p","local") then p=1; end
  if type(p)==1 | type(p)==8 then
    if p<=0 then error("port number must be greater than zero"); end
    if getos() == "Windows" then
      port="COM"+string(p)+":"
    else
      port="/dev/ttyS"+string(p-1)
    end
  elseif type(p)==10
     port=p
  else
     error("port to open must be either a number or a string")
  end

端口始终设置为/dev/ttyS<PORT_NUMBER>.因此，在本地工具箱文件中，您可以尝试将openserial.sci中的以下行编辑为类似这样的内容:

The port is always set to /dev/ttyS<PORT_NUMBER>. So in your local toolbox files, you could try editing the following lines in openserial.sci to something like this:

function h=openserial(p,smode,translation,handshake,xchar,timeout)
//port name
  if ~exists("p","local") then p=1; end
  if type(p)==1 | type(p)==8 then
    if p<=0 then error("port number must be greater than zero"); end
    if getos() == "Windows" then
      port="COM"+string(p)+":"
    else
      port="/dev/ttyS"+string(p-1)
    end
  elseif type(p)==10
     port=p
  elseif type(p)=="ACM0"
     port="/dev/ttyACM0"
  else
     error("port to open must be either a number or a string")
  end

，然后按如下所示调用openserial:

and then call openserial as follows:

h=openserial("ACM0","9600,n,8,1)

还要确保/dev/ttyACM0是正确的设备节点.这是ls -l的示例输出，您可以运行以确认:

Also make sure that /dev/ttyACM0 is the correct device node. This is a sample output from ls -l, that you can run to confirm:

$ ls -l /dev/ttyACM0
crw-rw---- 1 root dialout 188,  0 Mar 12 18:16 /dev/ttyACM0

如果在以普通用户身份打开串行端口时遇到错误，则可以将自己添加到正确的组中.根据以上示例，我的openSUSE发行版上的组名称为dialout.您的名称可能有所不同，因此请在以下命令中替换该组名称:

If you're getting errors opening the serial port as a regular user, you might add yourself to the correct group. Based on the above example, the group name is dialout on my openSUSE distro. It might be different on yours, so substitute that group name in the following command:

sudo usermod -a -G dialout <USER_NAME>

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