http://armadeus.org/wiki/index.php?action=history&feed=atom&title=Serial_port_selection_generalitiesSerial port selection generalities - Revision history2026-04-05T22:17:35ZRevision history for this page on the wikiMediaWiki 1.26.3http://armadeus.org/wiki/index.php?title=Serial_port_selection_generalities&diff=10811&oldid=prevSalocin68 at 06:14, 11 April 20122012-04-11T06:14:55Z<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 06:14, 11 April 2012</td>
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<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* In this example, we assume that your serial port is ''/dev/ttyS0'' (first serial port). Change this to the appropriate value if necessary. For example if you use an ''USB <-> Serial'' converter then serial port would surely be named like that: ''/dev/ttyUSB0''</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* In this example, we assume that your serial port is ''/dev/ttyS0'' (first serial port). Change this to the appropriate value if necessary. For example if you use an ''USB <-> Serial'' converter then serial port would surely be named like that: ''/dev/ttyUSB0<ins class="diffchange diffchange-inline">'' or ''/dev/ttyACM0</ins>''</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* If your ''USB <-> Serial'' converter doesn't seem to work, run the ''dmesg'' command. You should read [http://ubuntuforums.org/archive/index.php/t-392791.html this thread] if you see some disconnection data like this :</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* If your ''USB <-> Serial'' converter doesn't seem to work, run the ''dmesg'' command. You should read [http://ubuntuforums.org/archive/index.php/t-392791.html this thread] if you see some disconnection data like this :</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>  [ 2445.568000] usb 1-1.4: new full speed USB device using uhci_hcd and address 22</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>  [ 2445.568000] usb 1-1.4: new full speed USB device using uhci_hcd and address 22</div></td></tr>
</table>Salocin68http://armadeus.org/wiki/index.php?title=Serial_port_selection_generalities&diff=6499&oldid=prevJulienB: Factorize doc2009-05-15T15:54:23Z<p>Factorize doc</p>
<p><b>New page</b></p><div>* In this example, we assume that your serial port is ''/dev/ttyS0'' (first serial port). Change this to the appropriate value if necessary. For example if you use an ''USB <-> Serial'' converter then serial port would surely be named like that: ''/dev/ttyUSB0''<br />
* If your ''USB <-> Serial'' converter doesn't seem to work, run the ''dmesg'' command. You should read [http://ubuntuforums.org/archive/index.php/t-392791.html this thread] if you see some disconnection data like this :<br />
[ 2445.568000] usb 1-1.4: new full speed USB device using uhci_hcd and address 22<br />
...<br />
[ 2446.964000] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0<br />
[ 2446.964000] ftdi_sio 1-1.4:1.0: device disconnected<br />
<br />
* Check that you have read/write rights on ''/dev/ttyS0'' (ie your serial port): your user ID (here julien) should be part of the serial port access group (here dialout):<br />
<pre class="host><br />
$ ls -al /dev/ttyS0<br />
crw-rw---- 1 root dialout 4, 64 2009-05-15 14:56 /dev/ttyS0<br />
$ id<br />
uid=1000(julien) gid=1000(julien) groupes=4(adm),20(dialout),...<br />
</pre></div>JulienB