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60 lines
2.6 KiB
60 lines
2.6 KiB
8 years ago
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<script type="text/x-red" data-help-name="AudioOutputI2S">
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<h3>Summary</h3>
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<div class=tooltipinfo>
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<p>Transmit 16 bit stereo audio to the
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<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a>
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or another I2S device, using I2S master mode.</p>
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<p align=center><img src="img/audioshield_outputs.jpg"></p>
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</div>
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<h3>Audio Connections</h3>
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<table class=doc align=center cellpadding=3>
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<tr class=top><th>Port</th><th>Purpose</th></tr>
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<tr class=odd><td align=center>In 0</td><td>Left Channel</td></tr>
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<tr class=odd><td align=center>In 1</td><td>Right Channel</td></tr>
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</table>
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<h3>Functions</h3>
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<p>This object has no functions to call from the Arduino sketch. It
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simply streams data from its 2 input ports to the I2S hardware.</p>
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<h3>Hardware</h3>
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<p align=center><img src="img/audioshield_backside.jpg"></p>
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<p>The I2S signals are used in "master" mode, where Teensy creates
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all 3 clock signals and controls all data timing.</p>
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<table class=doc align=center cellpadding=3>
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<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
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<tr class=odd><td align=center>9</td><td>BCLK</td><td>Output</td></tr>
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<tr class=odd><td align=center>11</td><td>MCLK</td><td>Output</td></tr>
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<tr class=odd><td align=center>22</td><td>TX</td><td>Output</td></tr>
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<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Output</td></tr>
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</table>
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<p>Audio from
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master mode I2S may be used in the same project as ADC, DAC and
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PWM signals, because all remain in sync to Teensy's timing</p>
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<h3>Examples</h3>
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<p>Nearly all the examples use this object. Here are some of the highlights:</p>
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<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughStereo
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</p>
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<p class=exam>File > Examples > Audio > SamplePlayer
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</p>
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<p class=exam>File > Examples > Audio > Recorder
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</p>
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<p class=exam>File > Examples > Audio > WavFilePlayer
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</p>
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<p class=exam>File > Examples > Audio > Effects > Chorus
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</p>
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<p class=exam>File > Examples > Audio > Synthesis > PlaySynthMusic
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</p>
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<h3>Notes</h3>
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<p>Normally, this object is used with the Audio Shield, which
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is controlled separately by the "sgtl5000" object.</p>
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<p>Only one I2S input and one I2S output object may be used. Master
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and slave modes may not be mixed (both must be of the same type).
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</p>
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</script>
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<script type="text/x-red" data-template-name="AudioOutputI2S">
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<div class="form-row">
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<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
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<input type="text" id="node-input-name" placeholder="Name">
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</div>
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</script>
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