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POOutput breaking in child Process by nodejs
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2012-03-21T09:44:56.500
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2013-05-16T21:28:43.380
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I connected <a href="http://www.google.com/imgres?q=wavecom%20gsm%20modem&um=1&hl=en&sa=N&biw=1280&bih=880&tbm=isch&tbnid=Paht9jLVzyWsrM%3a&imgrefurl=http://www.made-in-china.com/showroom/skylinestefanie/product-detailVMuJIZwPrOcG/China-Wavecom-16-Port-GSM-Modem-Bulk-SMS-Modem-USB-RS232-Interface-4-Kinds-of.html&docid=AOTKF8FaBRwPtM&imgurl=http://image.made-in-china.com/2f0j00FZctYUSLaTqI/Wavecom-16-Port-GSM-Modem-Bulk-SMS-Modem-USB-RS232-Interface-4-Kinds-of.jpg&w=450&h=450&ei=2GtpT-WwOMrprAfi7anfBw&zoom=1&iact=hc&vpx=199&vpy=323&dur=1527&hovh=225&hovw=225&tx=125&ty=128&sig=105577733481107667276&page=4&tbnh=164&tbnw=183&start=71&ndsp=25&ved=1t:429,r:5,s:71" rel="nofollow">wavecom GSM modem</a> on ubantu. I use node.js language to communicate with GSM modem. I send command to modem by <a href="http://nodejs.org/api/child_process.html" rel="nofollow">Child Process</a>. Here example <pre><code>var spawn = require("child_process").spawn, exec = require('child_process').exec; // Write dev_ttyUSB15.tmp file var child = exec('cat < /dev/ttyUSB15 > /tmp/dev_ttyUSB15.tmp'); // Read dev_ttyUSB15.tmp file var m1 = spawn('tail',['-f','/tmp/dev_ttyUSB15.tmp']); // on data event is emitted when dev_ttyUSB15.tmp file has some data m1.stdout.on('data', function (data) { console.log("Data : "+data); // this is executed as output }); </code></pre> Now When I fire some command on port /dev/ttyUSB15 I do not get output properly. E.g Suppose my output should be <pre><code>Data : abcd1234 </code></pre> but instead of it I got <pre><code>Data : abc Data : d1234 </code></pre> In short My output is breaked. I can not extrapolate from where my output exactly break. It's random. Can anyone give me any idea? Thanks in advance.
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<node.js><child-process>
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Output breaking in child Process by nodejs
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