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📁 基于 at91sam7s256 的i2c驱动源码
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<title>AT91 SAM7S Interrupt Management Version: 2.0</title>
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<div class=Section1>

<p class=MsoNormal align=right style='text-align:right'><!-- ******* title  ********** !--><b><span
lang=EN-US style='mso-ansi-language:EN-US'>Version: 1.0</span></b><span
lang=EN-US style='mso-ansi-language:EN-US'><o:p></o:p></span></p>

<p align=center style='text-align:center'><b><span lang=EN-US style='font-family:
Georgia;mso-ansi-language:EN-US'>AT91 SAM7 SCC I2S<span style="mso-spacerun:
yes">&nbsp; </span>Or DSP mode<o:p></o:p></span></b></p>

<p><span lang=EN-US style='mso-ansi-language:EN-US'>The goal of this
demonstration project is to demonstrate how to use the AT91 ARM-Based Software
Package. <o:p></o:p></span></p>

<p><span lang=EN-US style='mso-ansi-language:EN-US'>This project runs a
configuration test to <b>AT91SAM7S SSC peripheral </b>and his corresponding Evaluation
Kit, the <b>AT91SAM7S-EK. </b><br style='mso-special-character:line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]><o:p></o:p></span></p>

<p><span lang=EN-US style='mso-ansi-language:EN-US'><![if !supportEmptyParas]>&nbsp;<![endif]><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//=============================================================================<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>IS2 mode Timing chronogram<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//=============================================================================<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>_<span
style="mso-spacerun: yes">&nbsp;&nbsp; </span>_<span style="mso-spacerun:
yes">&nbsp;&nbsp; </span>_<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>// TK<span style="mso-spacerun: yes">&nbsp;&nbsp;
</span>__| |_| |_| |_---------------------------------<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>____<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>_____________<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>// TF<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>|___________________________|<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>|<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>____ ___ ___ ___<span
style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>___ ___<span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>___<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>// TD<span style="mso-spacerun: yes">&nbsp;&nbsp;
</span>____|___|___|___|-----------|___|___|------|___|<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>n<span style="mso-spacerun: yes">&nbsp;&nbsp; </span>n-1<span
style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>0<span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span>n<span
style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>0<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>|<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>|<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>// Data<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>| DATA_OUT_L<span
style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>|DATA_OUT_R<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>//<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>DSP mode<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'>#define AT91C_I2S_MASTER_TX_SETTING(nb_bit_by_slot,
nb_slot_by_frame)( +\<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'><span style='mso-tab-count:5'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>AT91C_SSC_CKS_DIV<span
style="mso-spacerun: yes">&nbsp;&nbsp; </span>+\<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'><span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>AT91C_SSC_CKO_CONTINOUS<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>+\<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";
mso-ansi-language:EN-US'><span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span>AT91C_SSC_CKG_NONE<span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;
</span>+\<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";

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