用Ruby与串口交互

最近在学习串口的一些东西,今天试用了一下Ruby操作串口,向modem发送指令并获得返回。更强大的是这段代码在windows上也可以工作 

rubynroll 写道

仅通过File IO缺乏设置串口通讯参数的能力. 串口通讯建议用ruby-serialport这个gem,功能齐全, Linux/Windows均可工作.

总结一下:
串口模块
ruby: ruby-serialport
  <gem install serial-port, this needs nmake>
perl: Win32::SerialPort
Python: serial


代码如下:

def execute_cmd(chan, cmd)
  print "Executing #{cmd} "
  chan.write("#{cmd}\r")
  begin
    result = chan.readlines
    result = "Command not support\n" if result.include?("ERROR\n")
  rescue
    result = "Writing serial port error\n"
  end
  print result
end

# My modem on serial port 3
File.open('com3:', 'r+') do |file|
  execute_cmd(file, "AT")
  execute_cmd(file, "AT&FE0V1S0=0&C1&D2+MR=2;+DR=1;+ER=1;W2")
  execute_cmd(file, "ATQ0V1E0")
  execute_cmd(file, "AT+GMM")
  execute_cmd(file, "AT+FCLASS")
  execute_cmd(file, "AT#CLS=?")
  execute_cmd(file, "AT+GCI?")
  execute_cmd(file, "AT+GCI=?")
  1.upto(7) do |i|
    execute_cmd(file, "ATI#{i}")
  end
end

用perl：

open FH, '+>', "com3:" ||die "can not open this port";
print FH "AT+GMM\r";
print $s while($s=<FH>);
print FH "ATI1\r";
print $s while($s=<FH>);
close FH;

Python 有个 serial 的模块

评论

5 楼 stworthy 2009-05-22  

<div class="quote_title">magixyu 写道</div>
<div class="quote_div">用perl：<br><pre name="code" class="java">open FH, '+&gt;', "com3:" ||die "can not open this port";
print FH "AT+GMM\r";
print $s while($s=&lt;FH&gt;);
print FH "ATI1\r";
print $s while($s=&lt;FH&gt;);
close FH;
</pre>
</div>
<p>用PERL看着确实方便，怀念PERL的年代。</p>
<p> </p>

4 楼 magixyu 2009-05-21  

错位的问题应该和rubynroll提到的“串口通讯参数的能力”有关。
请看下面这个帖子
http://magixyu.iteye.com/blog/325315

3 楼 lytsing 2009-05-19  

楼主，你的脚本在我这里行不通。

# My modem on serial port 6
File.open('com6:', 'r+') do |file|
  execute_cmd(file, "AT")
  execute_cmd(file, "AT+CPBS=?")
  execute_cmd(file, "AT+CPBS?")
  execute_cmd(file, "AT+CIMI?")
  execute_cmd(file, "AT+CSQ?")
  execute_cmd(file, "AT+CREG?")
  execute_cmd(file, "AT+VSPST?")
  execute_cmd(file, "AT+CMGF=?")
end

结果是：

Executing AT
Executing AT+CPBS=?

OK
Executing AT+CPBS?

+CPBS:("ME","SM")

OK
Executing AT+CIMI?

+CPBS:"ME",0,200

OK
Executing AT+CSQ?

460036380892074

OK
Executing AT+CREG?

+CSQ: 0,99

OK
Executing AT+VSPST?

+CREG:2,2,0x0,0x0

OK
Executing AT+CMGF=?

+VSPST:1,1

OK

发现错位，并少了最后一个AT响应，请指教。

2 楼 magixyu 2009-02-07  

rubynroll 写道

仅通过File IO缺乏设置串口通讯参数的能力. 串口通讯建议用ruby-serialport这个gem,功能齐全, Linux/Windows均可工作.

谢了 ^_^
我马上更新一下。

1 楼 rubynroll 2009-02-07  

仅通过File IO缺乏设置串口通讯参数的能力. 串口通讯建议用ruby-serialport这个gem,功能齐全, Linux/Windows均可工作.