libs15.htm

来自「ST20 Embedded Toolset R2.0.5用于开发基于ST20芯片」· HTM 代码 · 共 105 行

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<h2>
  <a name="1205987"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">callback_...</font>
</h2><hr>


<p>
  <a name="1205988"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Register a callback for an event</font>
</p>


<h3>
  <a name="1205989"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
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<a name="1205990"> </a><font size=2 face=Courier><strong>#include &lt;callback.h&gt;<br></strong></font>



<a name="1266102"> </a><font size=2 face=Courier><strong>callback_fn_t callback_task_switch(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_task_init(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_task_exit(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_task_delete(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_task_restart(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_task_stop(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_interrupt_install(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_interrupt_delete(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_interrupt_enter(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br>callback_fn_t callback_interrupt_exit(callback_fn_t <font size=2 face=Courier><strong><em>Function</em></strong></font>);<br></strong></font>



<h3>
  <a name="1205992"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
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<p>
  <a name="1230753"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>callback_fn_t </strong></font><font size=2 face=Courier><strong><em>Function</em></strong></font></b></font>
<br>

<dl><dl>    <dl>
      <dt> <a name="1230755"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Pointer to <font size=2 face=Courier><strong>void (*)(void)</strong></font> function</font>
    </dl>
</dl></dl>
<h3>
  <a name="1205995"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Results</font>
</h3>


<p>
  <a name="1205996"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Pointer to the previously installed function.</font>
</p>


<h3>
  <a name="1205997"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
</h3>


<p>
  <a name="1205998"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">None</font>
</p>


<h3>
  <a name="1205999"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>


<p>
  <a name="1206000"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">This group of functions is used to install callback handlers to any of the supported internal OS20 events. These functions can only be used if OS20 is rebuilt with <font size=2 face=Courier><strong>CONF_CALLBACK_SUPPORT</strong></font> defined; see <a href="compile4.htm#1204553"><font  color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section

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