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POruby serialport gem, who is responsible to check parity errors?
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copied!<h3>gems</h3> <p>serialport (1.0.4)<br> Authors: Guillaume Pierronnet, Alan Stern, Daniel E. Shipton, Tobin<br> Richard, Hector Parra, Ryan C. Payne<br> Homepage: <a href="http://github.com/hparra/ruby-serialport/" rel="nofollow">http://github.com/hparra/ruby-serialport/</a><br> Library for using RS-232 serial ports. </p> <p>I am using this gem, and my device's specifications are as follows.</p> <ul> <li>9600bps</li> <li>7bits</li> <li>1 stop bit</li> <li>EVEN parity</li> </ul> <p>When I receive data like below, the unpacked data is still with parity bit.</p> <pre class="lang-rb prettyprint-override"><code>sp = SerialPort.new("/dev/serial-device", 9600, 7, 1, SerialPort::EVEN) data = sp.gets data.chars.each do |char| puts char.unpack("B*") end </code></pre> <p>ex. if <code>sp</code> receives <code>a</code>, the unpacked data is <code>11100001</code> instead of <code>01100001</code>, because it's EVEN parity.</p> <hr> <p>To convert the byte back the what it should be, I do like this</p> <pre class="lang-rb prettyprint-override"><code>data = sp.gets #gets 11100001 for 'a' (even parity) data.bytes.to_a.each do |byte| puts (byte & 127).chr end </code></pre> <p>now, to me, this is a way low-level. I was expecting the serialport gem was to do this parity check, but as far as I read its document, it doesn't say anything about parity check.</p> <p>Am I missing a method that is already implemented in the gem, or is my work around above is nessesary since it's my responsibity to check the parity and find error?</p>

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