codec___8h.html

BlueLab3 bluetooth API 说明文档

    <tr><td></td><td valign=top><em>analogue</em>&nbsp;</td><td>The analogue gain </td></tr>
    <tr><td></td><td valign=top><em>digital</em>&nbsp;</td><td>The digital gain</td></tr>
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</dl>
It should be noted that the preferred mechanism of setting these input gains is via CodecSetInputGainA. Raw access to the gain registers may be removed in later BlueLab revisions and use of CodecSetInputGainA will decouple the VM application from changes in the underlying hardware between BlueCore variants.<p>
A mapping of register values to codec gain settings in dB may be obtained from the data book of a given BlueCore device.     </td>
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<a class="anchor" name="a8" doxytag="codec_.h::CodecSetRawInputGainB" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecSetRawInputGainB           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a4">uint16</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>analogue</em>, </td>
        </tr>
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          <td class="md" nowrap align="right"></td>
          <td></td>
          <td class="md" nowrap><a class="el" href="csrtypes_8h.html#a4">uint16</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>digital</em></td>
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          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
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      &nbsp;
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<p>
Sets the raw analogue and digital input gains for the codec channel B if present. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>analogue</em>&nbsp;</td><td>The analogue gain </td></tr>
    <tr><td></td><td valign=top><em>digital</em>&nbsp;</td><td>The digital gain</td></tr>
  </table>
</dl>
It should be noted that the preferred mechanism of setting these input gains is via CodecSetInputGainB. Raw access to the gain registers may be removed in later BlueLab revisions and use of CodecSetInputGainB will decouple the VM application from changes in the underlying hardware between BlueCore variants.<p>
A mapping of register values to codec gain settings in dB may be obtained from the data book of a given BlueCore device.     </td>
  </tr>
</table>
<a class="anchor" name="a9" doxytag="codec_.h::CodecSetRawOutputGainA" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecSetRawOutputGainA           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a4">uint16</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>analogue</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td></td>
          <td class="md" nowrap><a class="el" href="csrtypes_8h.html#a4">uint16</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>digital</em></td>
        </tr>
        <tr>
          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
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      &nbsp;
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<p>
Sets the raw analogue and digital output gains for the codec. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>analogue</em>&nbsp;</td><td>The analogue gain </td></tr>
    <tr><td></td><td valign=top><em>digital</em>&nbsp;</td><td>The digital gain</td></tr>
  </table>
</dl>
It should be noted that the preferred mechanism of setting these output gains is via CodecSetOutputGainA. Raw access to the gain registers may be removed in later BlueLab revisions and use of CodecSetOutputGainA will decouple the VM application from changes in the underlying hardware between BlueCore variants.<p>
A mapping of register values to codec gain settings in dB may be obtained from the data book of a given BlueCore device.     </td>
  </tr>
</table>
<a class="anchor" name="a10" doxytag="codec_.h::CodecSetRawOutputGainB" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecSetRawOutputGainB           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a4">uint16</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>analogue</em>, </td>
        </tr>
        <tr>
          <td class="md" nowrap align="right"></td>
          <td></td>
          <td class="md" nowrap><a class="el" href="csrtypes_8h.html#a4">uint16</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>digital</em></td>
        </tr>
        <tr>
          <td></td>
          <td class="md">)&nbsp;</td>
          <td class="md" colspan="2"></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
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    <td>
      &nbsp;
    </td>
    <td>

<p>
Sets the raw analogue and digital output gains for the codec channel B if present. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>analogue</em>&nbsp;</td><td>The analogue gain </td></tr>
    <tr><td></td><td valign=top><em>digital</em>&nbsp;</td><td>The digital gain</td></tr>
  </table>
</dl>
It should be noted that the preferred mechanism of setting these output gains is via CodecSetOutputGainB. Raw access to the gain registers may be removed in later BlueLab revisions and use of CodecSetOutputGainB will decouple the VM application from changes in the underlying hardware between BlueCore variants.<p>
A mapping of register values to codec gain settings in dB may be obtained from the data book of a given BlueCore device.     </td>
  </tr>
</table>
<a class="anchor" name="a11" doxytag="codec_.h::CodecEnableMicInputGainA" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecEnableMicInputGainA           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a9">bool</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>enable</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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    </td>
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      &nbsp;
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<p>
Enables additional input gain. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>enable</em>&nbsp;</td><td><a class="el" href="csrtypes_8h.html#a0">TRUE(enable extra gain)</a> or <a class="el" href="csrtypes_8h.html#a1">FALSE(disable extra gain)</a></td></tr>
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</dl>
Passing TRUE to this trap enables the microphone pre-amp on BlueCore for channel A. This results in an additional 20dB of input gain on that channel. In designs that use a microphone, enabling this functionality is recommended.     </td>
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<a class="anchor" name="a12" doxytag="codec_.h::CodecEnableMicInputGainB" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecEnableMicInputGainB           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a9">bool</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>enable</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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    </td>
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      &nbsp;
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<p>
Enables additional gain on input channel B if present. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>enable</em>&nbsp;</td><td><a class="el" href="csrtypes_8h.html#a0">TRUE(enable extra gain)</a> or <a class="el" href="csrtypes_8h.html#a1">FALSE(disable extra gain)</a></td></tr>
  </table>
</dl>
Passing TRUE to this trap enables the microphone pre-amp on BlueCore for channel B. This results in an additional 20dB of input gain on that channel. In designs that use a microphone, enabling this functionality is recommended.     </td>
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<a class="anchor" name="a13" doxytag="codec_.h::CodecOutputStageAEnableLowPower" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecOutputStageAEnableLowPower           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a9">bool</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>enable</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
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    </td>
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      &nbsp;
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<p>
Enables or disables low power mode for the codec channel A output stage. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>enable</em>&nbsp;</td><td>TRUE will enable low power mode, FALSE will disable it. </td></tr>
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</dl>
    </td>
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<a class="anchor" name="a14" doxytag="codec_.h::CodecOutputStageBEnableLowPower" ></a><p>
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          <td class="md" nowrap valign="top"> void CodecOutputStageBEnableLowPower           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="csrtypes_8h.html#a9">bool</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>enable</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
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    <td>
      &nbsp;
    </td>
    <td>

<p>
Enables or disables low power mode for the codec channel B output stage. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td></td><td valign=top><em>enable</em>&nbsp;</td><td>TRUE will enable low power mode, FALSE will disable it. </td></tr>
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</dl>
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