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<h2>
<a name="1210098"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">1.3 Command language</font>
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<p>
<a name="1210099"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">A common command language is supported by the tools <strong>st20cc</strong>, <strong>st20run</strong>, <strong>st20sim</strong>, <strong>st20libr</strong> and <strong>stemi</strong>. Each of these tools uses a subset of the command language and certain key commands are recognized and used by more than one tool. The command language is described in the <em>ST20 Embedded Toolset Reference Manual</em>.</font>
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<p>
<a name="1210103"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Commands may be submitted to a tool:</font>
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<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210104"> </a>indirectly via a command file, that is, a text file containing a list of commands and optional comments, or,</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210105"> </a>in the case of the <strong>st20run</strong> debugging interface, interactively at the command line or via the debugging graphical interface.</font></p>
</ul>
<p>
<a name="1210106"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">In general, if a command is submitted which a particular tool does not use then the tool ignores the command and proceeds.</font>
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<p>
<a name="1210109"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><em>Note: Any exceptions to this are documented on a command basis in the <em>ST20 Embedded Toolset Reference Manual</em>.</em></font>
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<p>
<a name="1210111"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Command files may be specified on a tool command line by specifying the appropriate command line option; they may also be nested within other command files by using the <font size=2 face=Courier><strong>include</strong></font> command.</font>
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<p>
<a name="1210112"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The command language supports different types of commands, including:</font>
</p>
<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210113"> </a>file access (for example to include a named file),</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210114"> </a>system definition (for example to define the target),</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210115"> </a>system configuration (for example to allocate memory regions),</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210116"> </a>action commands (for example to initialize a memory location or set a breakpoint).</font></p>
</ul>
<p>
<a name="1210118"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The term target is used to describe either the hardware or simulator that runs the application, or a definition of the hardware or simulator, including the processor type and memory.</font>
</p>
<h3>
<a name="1210121"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">1.3.1 Command procedures</font>
</h3>
<p>
<a name="1210122"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">It is very useful to group commands which perform a particular task into a command procedure, which may then be called as required. Command procedures are similar to C functions. Each procedure is given a name and executes one or more commands.</font>
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<p>
<a name="1210123"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Procedures have the following format:</font>
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<a name="1210124"> </a><font size=2 face=Courier><strong>proc procedure_name {<br>⌨️ 快捷键说明
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