<script type="text/x-red" data-help-name="AudioInputI2SQuad"> <h3>Summary</h3> <div class=tooltipinfo> <p>Receive 16 bit quad (4) channel audio from two <a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shields</a> or another I2S devices, using I2S master mode.</p> <p align=center><img src="img/audioshield_quad_in.jpg"></p> </div> <h3>Audio Connections</h3> <table class=doc align=center cellpadding=3> <tr class=top><th>Port</th><th>Purpose</th></tr> <tr class=odd><td align=center>Out 0</td><td>Channel #1</td></tr> <tr class=odd><td align=center>Out 1</td><td>Channel #2</td></tr> <tr class=odd><td align=center>Out 2</td><td>Channel #3</td></tr> <tr class=odd><td align=center>Out 3</td><td>Channel #4</td></tr> </table> <h3>Functions</h3> <p>This object has no functions to call from the Arduino sketch. It simply streams data from the I2S hardware to its 4 output ports.</p> <h3>Hardware</h3> <p>See this Sparkfun blog for <a href="https://www.sparkfun.com/news/2055" target="_blank">how to connect two audio adaptors for 4 channel audio</a>. <p>The I2S signals are used in "master" mode, where Teensy creates all 3 clock signals and controls all data timing.</p> <table class=doc align=center cellpadding=3> <tr class=top><th>Teensy<br>3.2 Pin</th><th>Teensy<br>3.5/3.6 Pin</th><th>Signal</th><th>Direction</th></tr> <tr class=odd><td align=center>9</td><td align=center>9</td><td>BCLK</td><td>Output</td></tr> <tr class=odd><td align=center>11</td><td align=center>11</td><td>MCLK</td><td>Output</td></tr> <tr class=odd><td align=center>13</td><td align=center>13</td><td>RX</td><td>Input</td></tr> <tr class=odd><td align=center>30</td><td align=center>38</td><td>RX</td><td>Input</td></tr> <tr class=odd><td align=center>23</td><td align=center>23</td><td>LRCLK</td><td>Output</td></tr> </table> <p>Audio from master mode I2S may be used in the same project as ADC, DAC and PWM signals, because all remain in sync to Teensy's timing</p> <h3>Examples</h3> <p class=exam>File > Examples > Audio > HardwareTesting > PassThroughQuad </p> <h3>Notes</h3> <p>Normally, this object is used with two Audio Shield, which are controlled separately by a pair "sgtl5000" object.</p> </script> <script type="text/x-red" data-template-name="AudioInputI2SQuad"> <div class="form-row"> <label for="node-input-name"><i class="fa fa-tag"></i> Name</label> <input type="text" id="node-input-name" placeholder="Name"> </div> </script>