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The alternate console device CONFIG_NSH_CONDEV must not be defined unconditionally. This causes errors when using Telnet sessions. This was solved by adding CONFIG_NSH_ALTCONDEV: CONFIG_NSH_ALTCONDEV enables or disables the feature then, if enabled, CONFIG_NSH_CONDEV provides the alternative console device name

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Gregory Nutt 2014-05-05 08:52:02 -06:00
parent d722b3ed0f
commit caeece4f64
1 changed files with 19 additions and 10 deletions
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Documentation/NuttShell.html
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@ -3007,8 +3007,8 @@ set FOOBAR ABC_${FOO}_${BAR}
<li>
<code>CONFIG_NSH_USBCONSOLE</code>.
If defined, then the an arbitrary USB device may be used to as the NSH console.
In this case, <code>CONFIG_NSH_CONDEV</code> must be defined to indicate which USB device to use as the console.
The advantage of using a device other that /dev/console is that normal debug output can not use /dev/console while NSH uses <code>CONFIG_NSH_USBCONDEV</code>.
In this case, <code>CONFIG_NSH_USBCONDEV</code> must be defined to indicate which USB device to use as the console.
The advantage of using a device other that <code>/dev/console</code> is that normal debug output can then use <code>/dev/console</code> while NSH uses <code>CONFIG_NSH_USBCONDEV</code>.
<p>
<code>CONFIG_NSH_USBCONDEV</code>.
If <code>CONFIG_NSH_USBCONSOLE</code> is set to 'y', then <code>CONFIG_NSH_USBCONDEV</code> must also be set to select the USB device used to support the NSH console.
@ -3053,20 +3053,29 @@ set FOOBAR ABC_${FOO}_${BAR}
</td>
</tr>
<tr>
<td valign="top"><b><code>CONFIG_NSH_CONDEV</code></b></td>
<td valign="top"><b><code>CONFIG_NSH_ALTCONDEV</code></b> and <b><code>CONFIG_NSH_CONDEV</code></b></td>
<td>
If <code>CONFIG_NSH_CONSOLE</code> is set to <i>y</i>, then <code>CONFIG_NSH_CONDEV</code>
may also be set to select the serial device used to support the NSH console.
This should be set to the quoted name of a readable/write-able character driver such as:
If <code>CONFIG_NSH_CONSOLE</code> is set to <i>y</i>, then <code>CONFIG_NSH_ALTCONDEV</code>
may also be selected to enable use of an alternate character device to support the NSH console.
If <code>CONFIG_NSH_ALTCONDEV</code> is selected, then <code>CONFIG_NSH_CONDEV</code> holds the quoted name of a readable/write-able character driver such as:
<code>CONFIG_NSH_CONDEV=&quot;/dev/ttyS1&quot;</code>.
This is useful, for example, to separate the NSH command line from the system console
when the system console is used to provide debug output.
Default: <code>stdin</code> and <code>stdout</code> (probably &quot;<code>/dev/console</code>&quot;)
<ul><small>
NOTE: When any other device other than <code>/dev/console</code> is used for a user interface,
(1) linefeeds (<code>\n</code>) will not be expanded to carriage return / linefeeds (<code>\r\n</code>).
You will need to configure your terminal program to account for this.
And (2) input is not automatically echoed so you will have to turn local echo on.
<li>
<b>NOTE 1:</b>
When any other device other than <code>/dev/console</code> is used for a user interface,
(1) linefeeds (<code>\n</code>) will not be expanded to carriage return / linefeeds (<code>\r\n</code>).
You will need to configure your terminal program to account for this.
And (2) input is not automatically echoed so you will have to turn local echo on.
</li>
<li>
<b>NOTE 2:</b>
This option forces the console of all sessions to use NSH_CONDEV.
Hence, this option only makes sense for a system that supports only a single session.
This option is, in particular, incompatible with Telnet sessions because each Telnet session must use a different console device.
</li>
</small></ul>
</td>
<tr>