对原材料串行连接使用socat [英] Using socat for raw serial connection

问题描述

我们的目标是要连接到使用串口接口的嵌入设备。
到目前为止，我用：

The goal is to connect to an embedded device using serial interface. So far, I've used:

stty -F /dev/ttyS2 115200 cs8 ixoff
socat readline,history=/etc/socat.history /dev/ttyS2,raw,echo=0

和它的作品很好，但后来我发现，有系统启动要求您preSS没有pressing一个键中的一些选项输入和的readline 失败在那里。所以我的想法是绑定 ttyS2 到 cons0 ，但后来我发现了多个问题，如无法退出（ CTR + C ， CTR + q CTR +] ，甚至 ESC 不工作），退格键和删除做不行，字母输入两次，等于是经过一番摸索，我想出了这一点：

And it works excellent, but then I discovered that there are some options during system boot that require you to press a single key without pressing enter, and readline fails there. So my idea was to bind the ttyS2 to cons0, but then I discovered multiple problems, such as inability to quit (ctr+c, ctr+q ctr+] and even esc doesn't work), backspace and delete do not work, letters are typed twice, etc. So after some trial and error, I came up with this:

socat /dev/cons0,raw,echo=0,crnl /dev/ttyS2,raw,echo=0,escape=0x03,crnl

• 原材料两侧允许单个键preSS 来触发引导选项


• 回声= 0 两侧prevents 键preSS 翻番


• crnl 两侧prevent 输入 键preSS 翻番


• 逃脱= 0×03 让我退出的事情由pressing 点击率+ C


• raw on both sides allows a single key press to trigger a boot option
• echo=0 on both sides prevents key press doubling
• crnl on both sides prevent enter key press doubling
• escape=0x03 allows me to quit the thing by pressing ctr+c

问题是，当我退出，我的 cons0 是f可**** D盘，就好像它在某种程度上preserved的生，回声= 0，crnl 设置。我知道这个问题可能太具体了我的情况，但我只需要一个简单的方法来发送击键序列，因为我将与腻子（这是不是用我的平台上）。我使用 socat ，因为它是非常轻量级的，不需要任何aditional的图书馆，而且由于显示的命令是使用较大的脚本的一部分期待。

The problem is, when I quit, my cons0 is all f****d up, as if it somehow preserved the raw,echo=0,crnl settings. I know this problem is probably too specific for my scenario, but I just need a simple way to send keystrokes to serial as I would with putty (which is not available on my platform). I am using socat because it is extremely lightweight, does not require any aditional libraries, and because the shown commands are a part of the greater script that uses expect.

任何意见和建议，都大大AP preciated。

Any ideas and suggestions are greatly appreciated.

推荐答案

奥斯汀菲利普斯说，你可以使用 stty的理智恢复...

As Austin Phillips says, you can use stty sane to recover...

...但什么是更好的是，你可以（可能）为 socat XXXXX追加到socat命令; stty的理智，并有复苏是的自动的当您退出CTRL-C

...but what is even better is that you can (probably) append it to your socat command as socat xxxxx ; stty sane and have the recovery be automatic when you quit with ctrl-c.

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