我怎样才能用超时读取tty的文件? [英] How i can read tty file with timeout?
问题描述
我在/ dev目录,在那里我发送AT命令的tty设备。我想读逐行和停止超时后读取文件。</ P>
您可以使用该程序的stty
配置tty设备。要查看终端的/ dev / ttyS0的速率设置,请尝试
的stty -a -F为/ dev / ttyS0来
关于超时默认设置为分= 1;时间= 0
,这意味着,该读出程序将读取,直到至少一个字符已经被读取并且没有超时。例如使用
的stty -F为/ dev / ttyS0来分钟0时10
读程序(例如猫
)将完成1秒东西是否已读或不读之后。该参数的单位时间
是十分之一秒;你可以看看男人的stty
了解更多信息。
I have tty device in /dev , where I send AT commands. I want to read line by line and stop reading file after timeout.
You can use the program stty
to configure the tty device. To see the settings for terminal /dev/ttyS0, try
stty -a -F /dev/ttyS0
The default settings regarding timeout are min = 1; time = 0
, which means that the reading program will read until at least one character has been read and there is no timeout. Using e.g.
stty -F /dev/ttyS0 min 0 time 10
the reading program (e.g. cat
) will finish reading after one second whether anything has been read or not. The unit for the parameter time
is tenths of a second; you can check out man stty
for more information.
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