1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<HTML> 3 4<HEAD> 5<META http-equiv="Content-Type" content="text/html; charset=windows-1252"> 6<META name="GENERATOR" content="IBM WebSphere Studio Homepage Builder Version 8.0.0.0 for Windows"> 7<META http-equiv="Content-Style-Type" content="text/css"> 8<LINK rel="stylesheet" href="../../css/nitro.css" type="text/css"> 9<TITLE>MIC_AdjustAutoSampling</TITLE> 10</HEAD> 11 12<BODY> 13 14<H1 align="left">MIC_AdjustAutoSampling <img src="../../image/NTR.gif"><img src="../../image/TWL.gif"></H1> 15 16<H2>Syntax</H2> 17<DL> 18 <DD> 19<CODE>#include <nitro/spi.h></CODE><BR> 20 <PRE><CODE><A href="MICResult.html">MICResult</A> MIC_AdjustAutoSampling( u32 rate );</CODE></PRE> 21 </DD> 22</DL> 23 24<H2>Arguments</H2> 25<TABLE border="1" width="100%"> 26 <TBODY> 27 <TR> 28<TD width="300"><EM><STRONG><FONT face="Courier New">rate</FONT></STRONG></EM></TD> 29<TD width="700">Sampling rate. Directly specifies ARM7 CPU timer cycles.<br>Can also be selected from the <A href="MICSamplingRate.html"><CODE>MICSamplingRate</CODE></A> enumerated type.</TD> 30 </TR> 31 </TBODY> 32</TABLE> 33 34<H2>Return Values</H2> 35<P> 36Returns the processing result as a <A href="MICResult.html"><CODE>MICResult</CODE></A> enumerated type. Returns <CODE>MIC_RESULT_SUCCESS</CODE> if processing completes successfully, and some other value if the process fails for some reason. 37</P> 38 39<H2>Description</H2> 40<P> 41Synchronously adjusts the sampling rate of the microphone's auto-sampling. This function issues an auto-sampling adjustment request to ARM7, waits for a response from ARM7, and returns the process result. This is the synchronous version of the <A href="MIC_AdjustAutoSamplingAsync.html"><CODE>MIC_AdjustAutoSamplingAsync</CODE></A> function. This is only valid when auto-sampling has already begun. The CPU timer cycle is updated when the ARM7 receives the request, not earlier. 42</P> 43<P> 44This function returns <CODE>MIC_RESULT_INVALID_COMMAND</CODE> when the CODEC is running in CODEC-TWL mode because auto-sampling cannot be run at an arbitrary frequency in CODEC-TWL mode. In other words, this function can only be used when the CODEC is running in CODEC-DS mode. 45</P> 46 47<H2>Note</H2> 48<P> 49<FONT color=red>This function waits for a PXI interrupt for synchronization purposes. Do not call it when PXI interrupts are prohibited.</FONT> 50</P> 51 52<H2>See Also</H2> 53<P> 54<a href="MIC_AdjustAutoSamplingAsync.html"><CODE>MIC_AdjustAutoSamplingAsync</CODE></a><BR> <a href="MIC_StartAutoSampling.html"><CODE>MIC_StartAutoSampling</CODE></a><BR> <a href="MIC_StopAutoSampling.html"><CODE>MIC_StopAutoSampling</CODE></a> 55</P> 56 57<H2>Revision History</H2> 58<P> 592009/05/14 Added the TWL icon and a description related to CODEC. <BR>2008/01/09 Revised a description of differences in behavior due to the CODEC mode. <BR>2007/11/17 Added a description of operations on the TWL platform. <BR>2005/03/08 Standardized the Japanese notation of the term for "interrupt." <br>2005/01/11 Initial version.<BR> 60</P> 61<hr><p>CONFIDENTIAL</p></body> 62</HTML> 63
