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7<TITLE>OS_Printf</TITLE>
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11<H1 align="left">OS_Printf <IMG src="../../image/NTR.gif" align="middle"><IMG src="../../image/TWL.gif" align="middle"></H1>
12<H2>Syntax</H2>
13<DL>
14  <DD><CODE>#include &lt;nitro/os.h&gt;</CODE><BR>
15  <BR>
16  <CODE>void OS_Printf( const char *fmt, ... );</CODE>
17</DL>
18<H2>Arguments</H2>
19<TABLE border="1">
20  <TBODY>
21    <TR>
22      <TD><B><I>fmt</I></B></TD>
23      <TD>Output format string.</TD>
24    </TR>
25    <TR>
26      <TD><B><I>...</I></B></TD>
27      <TD>Variable number of arguments</TD>
28    </TR>
29  </TBODY>
30</TABLE>
31<H2>Return Values</H2>
32<P>None.</P>
33<H2>Description</H2>
34<P>Outputs a string. A variable number of arguments can be given in accordance to the format string (output format string).</P>
35<BLOCKQUOTE style="background-color:#ffffcc">
36<P>Example:<br /> OS_Printf( &quot;variable test = %d\n&quot;, test );</P>
37</BLOCKQUOTE>
38<P>This function is compiled with weak symbols. Therefore, you can overwrite them with your own function definitions.</P>
39<P>This function is used for debugging. It will not be included in the final ROM version (<code>FINALROM</code>).</P>
40
41<H2>Note</H2>
42<P>The <FONT color="#000000"><CODE>OS_Printf</CODE> function consumes a lot of stack space. The IRQ stack used during interrupt and callback execution is not that big. Therefore, whenever possible use the <A href="OS_TPrintf.html"><CODE>OS_TPrintf</CODE></A> function, which is the lighter version, in deeply nested function calls within IRQ interrupts. When debug output freezes, you may be able to use the <A href="OS_TPrintf.html"><CODE>OS_TPrintf</CODE></A> function instead to prevent this from occurring.</FONT></P>
43<P>However, floating-point output is not supported by <A href="OS_TPrintf.html"><CODE>OS_TPrintf</CODE></A>.</P>
44<H2>See Also</H2>
45<P><CODE><A href="OS_PutString.html">OS_PutString</A><BR></CODE></P>
46<H2>Revision History</H2>
47<P>2004/11/25 Added description of weak symbols. <BR>2003/12/01 Initial version.</P>
48<hr><p>CONFIDENTIAL</p></body>
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