This is an automated email from the ASF dual-hosted git repository.
github-bot pushed a commit to branch asf-site
in repository https://gitbox.apache.org/repos/asf/nuttx-website.git
The following commit(s) were added to refs/heads/asf-site by this push:
new a570bc23 Publishing web: 07abea83aab63736f2895f109c448ae631509f46
docs: 12ea47b10f7d52e2784aa1ff64ac27a750eca31a
a570bc23 is described below
commit a570bc23dec17f171185376e68cfc5411e6a0536
Author: Alin Jerpelea <[email protected]>
AuthorDate: Wed Sep 6 00:13:04 2023 +0000
Publishing web: 07abea83aab63736f2895f109c448ae631509f46 docs:
12ea47b10f7d52e2784aa1ff64ac27a750eca31a
---
content/docs/10.0.0/index.html | 2 +-
content/docs/10.0.0/searchindex.js | 2 +-
content/docs/10.0.1/index.html | 2 +-
content/docs/10.0.1/searchindex.js | 2 +-
content/docs/10.1.0/index.html | 2 +-
content/docs/10.1.0/searchindex.js | 2 +-
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content/docs/11.0.0/searchindex.js | 2 +-
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content/docs/12.0.0/searchindex.js | 2 +-
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content/docs/12.2.1/index.html | 2 +-
content/docs/12.2.1/searchindex.js | 2 +-
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content/docs/latest/searchindex.js | 2 +-
content/feed.xml | 4 +-
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diff --git a/content/docs/10.0.0/index.html b/content/docs/10.0.0/index.html
index 49a0a10e..ff63f7f5 100644
--- a/content/docs/10.0.0/index.html
+++ b/content/docs/10.0.0/index.html
@@ -131,7 +131,7 @@ by following these <a class="reference internal"
href="contributing/documentatio
<section id="nuttx-documentation">
<h1>NuttX Documentation<a class="headerlink" href="#nuttx-documentation"
title="Permalink to this heading"></a></h1>
<p>NuttX is a real-time operating system (RTOS) with an emphasis on standards
compliance and small footprint. Scalable from 8-bit to 32-bit microcontroller
environments, the primary governing standards in NuttX are Posix and ANSI
standards. Additional standard APIs from Unix and other common RTOS’s (such as
VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:09</p>
+<p>Last Updated: 06 September 23 at 00:09</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
Contents</span></p>
<ul class="current">
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b/content/docs/10.0.0/searchindex.js
index a90c045a..0440fce7 100644
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index d15a84fc..48f0c426 100644
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<section id="nuttx-documentation">
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+<p>Last Updated: 06 September 23 at 00:09</p>
<div class="toctree-wrapper compound">
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index 15ea4f42..dae365d5 100644
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+<p>Last Updated: 06 September 23 at 00:09</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
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<ul class="current">
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+<p>Last Updated: 06 September 23 at 00:10</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
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<ul class="current">
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b/content/docs/10.2.0/searchindex.js
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index 9b7e9ba6..5403e973 100644
--- a/content/docs/10.3.0/index.html
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VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:10</p>
+<p>Last Updated: 06 September 23 at 00:10</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
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<ul class="current">
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b/content/docs/10.3.0/searchindex.js
index bfc3466c..8506ee8b 100644
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index 9b7e9ba6..5403e973 100644
--- a/content/docs/11.0.0/index.html
+++ b/content/docs/11.0.0/index.html
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VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:10</p>
+<p>Last Updated: 06 September 23 at 00:10</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
Contents</span></p>
<ul class="current">
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b/content/docs/11.0.0/searchindex.js
index 76e6e4c8..18218e51 100644
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VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:11</p>
+<p>Last Updated: 06 September 23 at 00:10</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
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<ul class="current">
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b/content/docs/12.0.0/searchindex.js
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VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:11</p>
+<p>Last Updated: 06 September 23 at 00:11</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
Contents</span></p>
<ul class="current">
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b/content/docs/12.1.0/searchindex.js
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VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:11</p>
+<p>Last Updated: 06 September 23 at 00:11</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
Contents</span></p>
<ul class="current">
diff --git a/content/docs/12.2.0/searchindex.js
b/content/docs/12.2.0/searchindex.js
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"applications/nsh/login", "applications/nsh/nsh", "applications/nxdiag/config",
"applications/nxdiag/index", "applications/wapi/commands",
"applications/wapi/index", "applications/wapi/wireless", "components/binfmt",
"components/drivers/block/index", "components/dr [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/index",
"applications/nsh/builtin", "applications/nsh/commands",
"applications/nsh/config", "applications/nsh/customizing",
"applications/nsh/index", "applications/nsh/installation",
"applications/nsh/login", "applications/nsh/nsh", "applications/nxdiag/config",
"applications/nxdiag/index", "applications/wapi/commands",
"applications/wapi/index", "applications/wapi/wireless", "components/binfmt",
"components/drivers/block/index", "components/dr [...]
\ No newline at end of file
diff --git a/content/docs/12.2.1/index.html b/content/docs/12.2.1/index.html
index 7521a6bf..99a847ba 100644
--- a/content/docs/12.2.1/index.html
+++ b/content/docs/12.2.1/index.html
@@ -154,7 +154,7 @@ by following these <a class="reference internal"
href="contributing/documentatio
<section id="nuttx-documentation">
<h1>NuttX Documentation<a class="headerlink" href="#nuttx-documentation"
title="Permalink to this heading"></a></h1>
<p>NuttX is a real-time operating system (RTOS) with an emphasis on standards
compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller
environments, the primary governing standards in NuttX are POSIX and ANSI
standards. Additional standard APIs from Unix and other common RTOS’s (such as
VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:12</p>
+<p>Last Updated: 06 September 23 at 00:11</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
Contents</span></p>
<ul class="current">
diff --git a/content/docs/12.2.1/searchindex.js
b/content/docs/12.2.1/searchindex.js
index 261dfbef..840928b6 100644
--- a/content/docs/12.2.1/searchindex.js
+++ b/content/docs/12.2.1/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/index",
"applications/nsh/builtin", "applications/nsh/commands",
"applications/nsh/config", "applications/nsh/customizing",
"applications/nsh/index", "applications/nsh/installation",
"applications/nsh/login", "applications/nsh/nsh", "applications/nxdiag/config",
"applications/nxdiag/index", "applications/wapi/commands",
"applications/wapi/index", "applications/wapi/wireless", "components/binfmt",
"components/drivers/block/index", "components/dr [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/index",
"applications/nsh/builtin", "applications/nsh/commands",
"applications/nsh/config", "applications/nsh/customizing",
"applications/nsh/index", "applications/nsh/installation",
"applications/nsh/login", "applications/nsh/nsh", "applications/nxdiag/config",
"applications/nxdiag/index", "applications/wapi/commands",
"applications/wapi/index", "applications/wapi/wireless", "components/binfmt",
"components/drivers/block/index", "components/dr [...]
\ No newline at end of file
diff --git a/content/docs/latest/_images/esp32-audio-config-file2.png
b/content/docs/latest/_images/esp32-audio-config-file2.png
new file mode 100644
index 00000000..c51fa32e
Binary files /dev/null and
b/content/docs/latest/_images/esp32-audio-config-file2.png differ
diff --git
a/content/docs/latest/_sources/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.rst.txt
b/content/docs/latest/_sources/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.rst.txt
index 880d4af4..130cfc8a 100644
---
a/content/docs/latest/_sources/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.rst.txt
+++
b/content/docs/latest/_sources/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.rst.txt
@@ -47,6 +47,21 @@ Board LEDs
There are several on-board LEDs for that indicate the presence of power
and USB activity. None of these are available for use by software.
+I2S
+===
+
+ESP32-S3 has two I2S peripherals accessible using either the generic I2S audio
+driver or a specific audio codec driver
+(`CS4344 <https://www.cirrus.com/products/cs4344-45-48/>`__ bindings are
+available at the moment). The generic I2S audio driver enables the use of both
+the receiver module (RX) and the transmitter module (TX) without using any
+specific codec. Also, it's possible to use the I2S character device driver
+to bypass the audio subsystem and write directly to the I2S peripheral.
+
+The following configurations use the I2S peripheral::
+ * :ref:`platforms/xtensa/esp32s3/boards/esp32s3-devkit/index:audio`
+ * :ref:`platforms/xtensa/esp32s3/boards/esp32s3-devkit/index:nxlooper`
+
Configurations
==============
@@ -58,6 +73,56 @@ All of the configurations presented below can be tested by
running the following
Where <config_name> is the name of board configuration you want to use, i.e.:
nsh, buttons, wifi...
Then use a serial console terminal like ``picocom`` configured to 115200 8N1.
+audio
+-----
+
+This configuration uses the I2S0 peripheral and an externally connected audio
+codec to play an audio file streamed over an HTTP connection while connected
+to a Wi-Fi network.
+
+**Audio Codec Setup**
+
+The CS4344 audio codec is connected to the following pins:
+
+============ ========== ============================================
+ESP32-S3 Pin CS4344 Pin Description
+============ ========== ============================================
+5 MCLK Master Clock
+16 SCLK Serial Clock
+7 LRCK Left Right Clock (Word Select)
+6 SDIN Serial Data In on CS4344. (DOUT on ESP32-S3)
+============ ========== ============================================
+
+**Simple HTTP server**
+
+Prepare a PCM-encoded (`.wav`) audio file with 16 or 24 bits/sample (sampled at
+16~48kHz). This file must be placed into a folder in a computer that could
+be accessed on the same Wi-Fi network the ESP32 will be connecting to.
+
+Python provides a simple HTTP server. ``cd`` to the audio file folder on the
+PC and run::
+
+ $ python3 -m http.server
+ Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/)
+
+Look for your PC IP address and test playing the prepared audio on your
+browser:
+
+.. figure:: esp32-audio-config-file.png
+ :align: center
+
+After successfully built and flashed, connect the board to the Wi-Fi network::
+
+ nsh> wapi psk wlan0 mypasswd 3
+ nsh> wapi essid wlan0 myssid 1
+ nsh> renew wlan0
+
+Once connected, open NuttX's player and play the file according to the filename
+and the IP address of the HTTP server::
+
+ nsh> nxplayer
+ nxplayer> play http://192.168.1.239:8000/tones.wav
+
buttons
-------
@@ -149,6 +214,64 @@ nsh
Basic NuttShell configuration (console enabled in UART0, exposed via
USB connection by means of CP2102 converter, at 115200 bps).
+nxlooper
+--------
+
+This configuration uses the I2S1 peripheral as an I2S receiver and the I2S0
+peripheral as an I2S transmitter. The idea is to capture an I2S data frame
+using an I2S peripheral and reproduce the captured data on the other.
+
+**Receiving data on I2S1**
+
+The I2S1 will act as a receiver (in slave mode, i.e., waiting for the BCLK
+and WS signals from the transmitter), capturing data from DIN, which
+needs to be connected to an external source as follows:
+
+============ ========== =========================================
+ESP32-S3 Pin Signal Pin Description
+============ ========== =========================================
+18 BCLK Bit Clock (SCLK)
+17 WS Word Select (LRCLK)
+15 DIN Data IN
+============ ========== =========================================
+
+**Transmitting data on I2S0**
+
+The I2S0 will act as a transmitter (in master mode, i.e., providing the
+BCLK and WS signals), replicating the data captured on I2S1.
+The pinout for the transmitter is as follows:
+
+========== ========== =========================================
+ESP32 Pin Signal Pin Description
+========== ========== =========================================
+5 MCLK Master Clock
+16 BCLK Bit Clock (SCLK)
+7 WS Word Select (LRCLK)
+6 DOUT Data Out
+========== ========== =========================================
+
+.. note:: The audio codec CS4344 can be connected to the transmitter pins
+ to reproduce the captured data if the receiver's source is a PCM-encoded
+ audio data.
+
+**nxlooper**
+
+The ``nxlooper`` application captures data from the audio device with input
+capabilities (the I2S1 in this example) and forwards the audio data frame to
+the audio device with output capabilities (the I2S0 in this example).
+
+After successfully built and flashed, run on the boards' terminal::
+
+ nsh> nxlooper
+ nxlooper> loopback
+
+.. note:: ``loopback`` command default arguments for the channel configuration,
+ data width and sample rate are, respectively, 2 channels,
+ 16 bits/sample and 48KHz. These arguments can be supplied to select
+ different audio formats, for instance::
+
+ nxlooper> loopback 2 16 44100
+
oneshot
-------
diff --git
a/content/docs/latest/_sources/platforms/xtensa/esp32s3/index.rst.txt
b/content/docs/latest/_sources/platforms/xtensa/esp32s3/index.rst.txt
index 4c6c2262..72546bdc 100644
--- a/content/docs/latest/_sources/platforms/xtensa/esp32s3/index.rst.txt
+++ b/content/docs/latest/_sources/platforms/xtensa/esp32s3/index.rst.txt
@@ -98,7 +98,7 @@ DMA Yes
eFuse No
GPIO Yes
I2C No
-I2S No
+I2S Yes
LCD No
LED_PWM No
MCPWM No
diff --git a/content/docs/latest/index.html b/content/docs/latest/index.html
index 0c9a0e3f..9b3bbcab 100644
--- a/content/docs/latest/index.html
+++ b/content/docs/latest/index.html
@@ -154,7 +154,7 @@ by following these <a class="reference internal"
href="contributing/documentatio
<section id="nuttx-documentation">
<h1>NuttX Documentation<a class="headerlink" href="#nuttx-documentation"
title="Permalink to this heading"></a></h1>
<p>NuttX is a real-time operating system (RTOS) with an emphasis on standards
compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller
environments, the primary governing standards in NuttX are POSIX and ANSI
standards. Additional standard APIs from Unix and other common RTOS’s (such as
VxWorks) are adopted for functionality not available under these standards, or
for functionality that is not appropriate for deeply-embedded environments
(such as fork()).</p>
-<p>Last Updated: 05 September 23 at 00:12</p>
+<p>Last Updated: 06 September 23 at 00:12</p>
<div class="toctree-wrapper compound">
<p class="caption" role="heading"><span class="caption-text">Table of
Contents</span></p>
<ul class="current">
diff --git a/content/docs/latest/objects.inv b/content/docs/latest/objects.inv
index b8a3a433..d9ffd395 100644
Binary files a/content/docs/latest/objects.inv and
b/content/docs/latest/objects.inv differ
diff --git
a/content/docs/latest/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.html
b/content/docs/latest/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.html
index 98e30ca0..12d5f1f3 100644
---
a/content/docs/latest/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.html
+++
b/content/docs/latest/platforms/xtensa/esp32s3/boards/esp32s3-devkit/index.html
@@ -214,6 +214,23 @@ input.</p>
and USB activity. None of these are available for use by software.</p>
</section>
</section>
+<section id="i2s">
+<h2>I2S<a class="headerlink" href="#i2s" title="Permalink to this
heading"></a></h2>
+<p>ESP32-S3 has two I2S peripherals accessible using either the generic I2S
audio
+driver or a specific audio codec driver
+(<a class="reference external"
href="https://www.cirrus.com/products/cs4344-45-48/";>CS4344</a> bindings are
+available at the moment). The generic I2S audio driver enables the use of both
+the receiver module (RX) and the transmitter module (TX) without using any
+specific codec. Also, it’s possible to use the I2S character device driver
+to bypass the audio subsystem and write directly to the I2S peripheral.</p>
+<dl class="simple">
+<dt>The following configurations use the I2S peripheral::</dt><dd><ul
class="simple">
+<li><p><a class="reference internal" href="#audio"><span class="std
std-ref">audio</span></a></p></li>
+<li><p><a class="reference internal" href="#nxlooper"><span class="std
std-ref">nxlooper</span></a></p></li>
+</ul>
+</dd>
+</dl>
+</section>
<section id="configurations">
<h2>Configurations<a class="headerlink" href="#configurations"
title="Permalink to this heading"></a></h2>
<p>All of the configurations presented below can be tested by running the
following commands:</p>
@@ -223,6 +240,67 @@ $ make flash ESPTOOL_PORT=/dev/ttyUSB0 -j
</div>
<p>Where <config_name> is the name of board configuration you want to
use, i.e.: nsh, buttons, wifi…
Then use a serial console terminal like <code class="docutils literal
notranslate"><span class="pre">picocom</span></code> configured to 115200
8N1.</p>
+<section id="audio">
+<h3>audio<a class="headerlink" href="#audio" title="Permalink to this
heading"></a></h3>
+<p>This configuration uses the I2S0 peripheral and an externally connected
audio
+codec to play an audio file streamed over an HTTP connection while connected
+to a Wi-Fi network.</p>
+<p><strong>Audio Codec Setup</strong></p>
+<p>The CS4344 audio codec is connected to the following pins:</p>
+<table class="docutils align-default">
+<thead>
+<tr class="row-odd"><th class="head"><p>ESP32-S3 Pin</p></th>
+<th class="head"><p>CS4344 Pin</p></th>
+<th class="head"><p>Description</p></th>
+</tr>
+</thead>
+<tbody>
+<tr class="row-even"><td><p>5</p></td>
+<td><p>MCLK</p></td>
+<td><p>Master Clock</p></td>
+</tr>
+<tr class="row-odd"><td><p>16</p></td>
+<td><p>SCLK</p></td>
+<td><p>Serial Clock</p></td>
+</tr>
+<tr class="row-even"><td><p>7</p></td>
+<td><p>LRCK</p></td>
+<td><p>Left Right Clock (Word Select)</p></td>
+</tr>
+<tr class="row-odd"><td><p>6</p></td>
+<td><p>SDIN</p></td>
+<td><p>Serial Data In on CS4344. (DOUT on ESP32-S3)</p></td>
+</tr>
+</tbody>
+</table>
+<p><strong>Simple HTTP server</strong></p>
+<p>Prepare a PCM-encoded (<cite>.wav</cite>) audio file with 16 or 24
bits/sample (sampled at
+16~48kHz). This file must be placed into a folder in a computer that could
+be accessed on the same Wi-Fi network the ESP32 will be connecting to.</p>
+<p>Python provides a simple HTTP server. <code class="docutils literal
notranslate"><span class="pre">cd</span></code> to the audio file folder on the
+PC and run:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>$ python3 -m http.server
+Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/)
+</pre></div>
+</div>
+<p>Look for your PC IP address and test playing the prepared audio on your
+browser:</p>
+<figure class="align-center">
+<img alt="../../../../../_images/esp32-audio-config-file2.png"
src="../../../../../_images/esp32-audio-config-file2.png" />
+</figure>
+<p>After successfully built and flashed, connect the board to the Wi-Fi
network:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>nsh> wapi psk wlan0 mypasswd 3
+nsh> wapi essid wlan0 myssid 1
+nsh> renew wlan0
+</pre></div>
+</div>
+<p>Once connected, open NuttX’s player and play the file according to the
filename
+and the IP address of the HTTP server:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>nsh> nxplayer
+nxplayer> play http://192.168.1.239:8000/tones.wav
+</pre></div>
+</div>
+</section>
<section id="buttons">
<h3>buttons<a class="headerlink" href="#buttons" title="Permalink to this
heading"></a></h3>
<p>This configuration shows the use of the buttons subsystem. It can be used
by executing
@@ -312,6 +390,93 @@ build the MCUboot bootloader image using the Espressif
HAL.</p>
<p>Basic NuttShell configuration (console enabled in UART0, exposed via
USB connection by means of CP2102 converter, at 115200 bps).</p>
</section>
+<section id="nxlooper">
+<h3>nxlooper<a class="headerlink" href="#nxlooper" title="Permalink to this
heading"></a></h3>
+<p>This configuration uses the I2S1 peripheral as an I2S receiver and the I2S0
+peripheral as an I2S transmitter. The idea is to capture an I2S data frame
+using an I2S peripheral and reproduce the captured data on the other.</p>
+<p><strong>Receiving data on I2S1</strong></p>
+<p>The I2S1 will act as a receiver (in slave mode, i.e., waiting for the BCLK
+and WS signals from the transmitter), capturing data from DIN, which
+needs to be connected to an external source as follows:</p>
+<table class="docutils align-default">
+<thead>
+<tr class="row-odd"><th class="head"><p>ESP32-S3 Pin</p></th>
+<th class="head"><p>Signal Pin</p></th>
+<th class="head"><p>Description</p></th>
+</tr>
+</thead>
+<tbody>
+<tr class="row-even"><td><p>18</p></td>
+<td><p>BCLK</p></td>
+<td><p>Bit Clock (SCLK)</p></td>
+</tr>
+<tr class="row-odd"><td><p>17</p></td>
+<td><p>WS</p></td>
+<td><p>Word Select (LRCLK)</p></td>
+</tr>
+<tr class="row-even"><td><p>15</p></td>
+<td><p>DIN</p></td>
+<td><p>Data IN</p></td>
+</tr>
+</tbody>
+</table>
+<p><strong>Transmitting data on I2S0</strong></p>
+<p>The I2S0 will act as a transmitter (in master mode, i.e., providing the
+BCLK and WS signals), replicating the data captured on I2S1.
+The pinout for the transmitter is as follows:</p>
+<table class="docutils align-default">
+<thead>
+<tr class="row-odd"><th class="head"><p>ESP32 Pin</p></th>
+<th class="head"><p>Signal Pin</p></th>
+<th class="head"><p>Description</p></th>
+</tr>
+</thead>
+<tbody>
+<tr class="row-even"><td><p>5</p></td>
+<td><p>MCLK</p></td>
+<td><p>Master Clock</p></td>
+</tr>
+<tr class="row-odd"><td><p>16</p></td>
+<td><p>BCLK</p></td>
+<td><p>Bit Clock (SCLK)</p></td>
+</tr>
+<tr class="row-even"><td><p>7</p></td>
+<td><p>WS</p></td>
+<td><p>Word Select (LRCLK)</p></td>
+</tr>
+<tr class="row-odd"><td><p>6</p></td>
+<td><p>DOUT</p></td>
+<td><p>Data Out</p></td>
+</tr>
+</tbody>
+</table>
+<div class="admonition note">
+<p class="admonition-title">Note</p>
+<p>The audio codec CS4344 can be connected to the transmitter pins
+to reproduce the captured data if the receiver’s source is a PCM-encoded
+audio data.</p>
+</div>
+<p><strong>nxlooper</strong></p>
+<p>The <code class="docutils literal notranslate"><span
class="pre">nxlooper</span></code> application captures data from the audio
device with input
+capabilities (the I2S1 in this example) and forwards the audio data frame to
+the audio device with output capabilities (the I2S0 in this example).</p>
+<p>After successfully built and flashed, run on the boards’ terminal:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>nsh> nxlooper
+nxlooper> loopback
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="admonition-title">Note</p>
+<p><code class="docutils literal notranslate"><span
class="pre">loopback</span></code> command default arguments for the channel
configuration,
+data width and sample rate are, respectively, 2 channels,
+16 bits/sample and 48KHz. These arguments can be supplied to select
+different audio formats, for instance:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>nxlooper> loopback 2 16 44100
+</pre></div>
+</div>
+</div>
+</section>
<section id="oneshot">
<h3>oneshot<a class="headerlink" href="#oneshot" title="Permalink to this
heading"></a></h3>
<p>This config demonstrate the use of oneshot timers present on the ESP32-S3.
diff --git a/content/docs/latest/platforms/xtensa/esp32s3/index.html
b/content/docs/latest/platforms/xtensa/esp32s3/index.html
index 586dda7d..9561048a 100644
--- a/content/docs/latest/platforms/xtensa/esp32s3/index.html
+++ b/content/docs/latest/platforms/xtensa/esp32s3/index.html
@@ -304,7 +304,7 @@ Once you downloaded both binaries, you can flash them by
adding an <code class="
<td></td>
</tr>
<tr class="row-odd"><td><p>I2S</p></td>
-<td><p>No</p></td>
+<td><p>Yes</p></td>
<td></td>
</tr>
<tr class="row-even"><td><p>LCD</p></td>
diff --git a/content/docs/latest/searchindex.js
b/content/docs/latest/searchindex.js
index 365f95ae..a87eb558 100644
--- a/content/docs/latest/searchindex.js
+++ b/content/docs/latest/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/index",
"applications/nsh/builtin", "applications/nsh/commands",
"applications/nsh/config", "applications/nsh/customizing",
"applications/nsh/index", "applications/nsh/installation",
"applications/nsh/login", "applications/nsh/nsh", "applications/nxdiag/config",
"applications/nxdiag/index", "applications/wapi/commands",
"applications/wapi/index", "applications/wapi/wireless", "components/binfmt",
"components/drivers/block/index", "components/dr [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/index",
"applications/nsh/builtin", "applications/nsh/commands",
"applications/nsh/config", "applications/nsh/customizing",
"applications/nsh/index", "applications/nsh/installation",
"applications/nsh/login", "applications/nsh/nsh", "applications/nxdiag/config",
"applications/nxdiag/index", "applications/wapi/commands",
"applications/wapi/index", "applications/wapi/wireless", "components/binfmt",
"components/drivers/block/index", "components/dr [...]
\ No newline at end of file
diff --git a/content/feed.xml b/content/feed.xml
index fb558691..969b54d8 100644
--- a/content/feed.xml
+++ b/content/feed.xml
@@ -5,8 +5,8 @@
<description></description>
<link>/</link>
<atom:link href="/feed.xml" rel="self" type="application/rss+xml"/>
- <pubDate>Tue, 05 Sep 2023 00:13:38 +0000</pubDate>
- <lastBuildDate>Tue, 05 Sep 2023 00:13:38 +0000</lastBuildDate>
+ <pubDate>Wed, 06 Sep 2023 00:12:59 +0000</pubDate>
+ <lastBuildDate>Wed, 06 Sep 2023 00:12:59 +0000</lastBuildDate>
<generator>Jekyll v4.3.2</generator>
<item>
