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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 7585209544 Publishing web: a4e12433e8b395b8a213863e926aef66307d9d23
docs: 76b31b04a37afaecc58880d8356bb89bb7d97720
7585209544 is described below
commit 75852095442c732d38769212dce4d1961f41fec5
Author: Michal Lenc <[email protected]>
AuthorDate: Thu May 14 12:30:17 2026 +0000
Publishing web: a4e12433e8b395b8a213863e926aef66307d9d23 docs:
76b31b04a37afaecc58880d8356bb89bb7d97720
---
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content/docs/10.0.1/index.html | 2 +-
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diff --git a/content/docs/10.0.0/index.html b/content/docs/10.0.0/index.html
index 59abcd2ec1..d24e41dfe2 100644
--- a/content/docs/10.0.0/index.html
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@@ -207,7 +207,7 @@ by following these <a class="reference internal"
href="contributing/documentatio
<div class="section" id="nuttx-documentation">
<h1>NuttX Documentation<a class="headerlink" href="#nuttx-documentation"
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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: 14 May 26 at 00:39</p>
+<p>Last Updated: 14 May 26 at 12:09</p>
<div class="toctree-wrapper compound">
<p class="caption"><span class="caption-text">Table of Contents</span></p>
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index c4ee5169e7..ef39cc13c4 100644
--- a/content/docs/10.0.1/index.html
+++ b/content/docs/10.0.1/index.html
@@ -251,7 +251,7 @@ by following these <a class="reference internal"
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-<p>Last Updated: 14 May 26 at 00:39</p>
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-<p>Last Updated: 14 May 26 at 00:39</p>
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index 5327b3abb0..26e8932920 100644
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<p class="caption"><span class="caption-text">Table of Contents</span></p>
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index 5327b3abb0..e1f7493b5c 100644
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+<p>Last Updated: 14 May 26 at 12:10</p>
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-<p>Last Updated: 14 May 26 at 00:51</p>
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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: 14 May 26 at 00:43</p>
+<p>Last Updated: 14 May 26 at 12:13</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/12.5.0/searchindex.js
b/content/docs/12.5.0/searchindex.js
index 05d38dde8e..e80755a6a3 100644
--- a/content/docs/12.5.0/searchindex.js
+++ b/content/docs/12.5.0/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/coremark/index", "applications/benchmarks/index",
"applications/boot/index", "applications/boot/mcuboot/index",
"applications/boot/miniboot/index", "applications/canutils/candump/index",
"applications/canutils/canlib/index", "applications/canutils/cansend/index",
"applications/c [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/coremark/index", "applications/benchmarks/index",
"applications/boot/index", "applications/boot/mcuboot/index",
"applications/boot/miniboot/index", "applications/canutils/candump/index",
"applications/canutils/canlib/index", "applications/canutils/cansend/index",
"applications/c [...]
\ No newline at end of file
diff --git a/content/docs/12.5.1/index.html b/content/docs/12.5.1/index.html
index e1fe1fa950..5c4733a186 100644
--- a/content/docs/12.5.1/index.html
+++ b/content/docs/12.5.1/index.html
@@ -185,7 +185,7 @@ 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: 14 May 26 at 00:44</p>
+<p>Last Updated: 14 May 26 at 12:14</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/12.5.1/searchindex.js
b/content/docs/12.5.1/searchindex.js
index ea160cda8a..57135a25ae 100644
--- a/content/docs/12.5.1/searchindex.js
+++ b/content/docs/12.5.1/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/coremark/index", "applications/benchmarks/index",
"applications/boot/index", "applications/boot/mcuboot/index",
"applications/boot/miniboot/index", "applications/canutils/candump/index",
"applications/canutils/canlib/index", "applications/canutils/cansend/index",
"applications/c [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/coremark/index", "applications/benchmarks/index",
"applications/boot/index", "applications/boot/mcuboot/index",
"applications/boot/miniboot/index", "applications/canutils/candump/index",
"applications/canutils/canlib/index", "applications/canutils/cansend/index",
"applications/c [...]
\ No newline at end of file
diff --git a/content/docs/12.6.0/index.html b/content/docs/12.6.0/index.html
index f56c1d2eb1..0f380c0fec 100644
--- a/content/docs/12.6.0/index.html
+++ b/content/docs/12.6.0/index.html
@@ -186,7 +186,7 @@ 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: 14 May 26 at 00:45</p>
+<p>Last Updated: 14 May 26 at 12:15</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/12.6.0/searchindex.js
b/content/docs/12.6.0/searchindex.js
index 58d28539f4..c9f0fa8807 100644
--- a/content/docs/12.6.0/searchindex.js
+++ b/content/docs/12.6.0/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/benchmarks/iozone/index",
"applications/bench [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/benchmarks/iozone/index",
"applications/bench [...]
\ No newline at end of file
diff --git a/content/docs/12.7.0/index.html b/content/docs/12.7.0/index.html
index 92516f1b0c..8f4a1f21bf 100644
--- a/content/docs/12.7.0/index.html
+++ b/content/docs/12.7.0/index.html
@@ -185,7 +185,7 @@ 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: 14 May 26 at 00:47</p>
+<p>Last Updated: 14 May 26 at 12:16</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/12.7.0/searchindex.js
b/content/docs/12.7.0/searchindex.js
index b4f9d456a2..1bff8f000f 100644
--- a/content/docs/12.7.0/searchindex.js
+++ b/content/docs/12.7.0/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/benchmarks/iozone/index",
"applications/bench [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/benchmarks/iozone/index",
"applications/bench [...]
\ No newline at end of file
diff --git a/content/docs/12.8.0/index.html b/content/docs/12.8.0/index.html
index 8b3d07b99b..2a6543b745 100644
--- a/content/docs/12.8.0/index.html
+++ b/content/docs/12.8.0/index.html
@@ -185,7 +185,7 @@ 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: 14 May 26 at 00:48</p>
+<p>Last Updated: 14 May 26 at 12:18</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/12.8.0/searchindex.js
b/content/docs/12.8.0/searchindex.js
index 64c36aaff0..db712b254b 100644
--- a/content/docs/12.8.0/searchindex.js
+++ b/content/docs/12.8.0/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/benchmarks/iozone/index",
"applications/bench [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/benchmarks/iozone/index",
"applications/bench [...]
\ No newline at end of file
diff --git a/content/docs/12.9.0/index.html b/content/docs/12.9.0/index.html
index 2b0159bb17..dfff45af1f 100644
--- a/content/docs/12.9.0/index.html
+++ b/content/docs/12.9.0/index.html
@@ -185,7 +185,7 @@ 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: 14 May 26 at 00:49</p>
+<p>Last Updated: 14 May 26 at 12:19</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/12.9.0/searchindex.js
b/content/docs/12.9.0/searchindex.js
index c3cd72bbbd..ce30e56e08 100644
--- a/content/docs/12.9.0/searchindex.js
+++ b/content/docs/12.9.0/searchindex.js
@@ -1 +1 @@
-Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/cyclictest/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/b [...]
\ No newline at end of file
+Search.setIndex({"docnames": ["applications/audioutils/fmsynt/index",
"applications/audioutils/index", "applications/audioutils/mml_parser/index",
"applications/audioutils/nxaudio/index",
"applications/benchmarks/cachespeed/index",
"applications/benchmarks/coremark-pro/index",
"applications/benchmarks/coremark/index",
"applications/benchmarks/cyclictest/index",
"applications/benchmarks/dhrystone/index", "applications/benchmarks/fio/index",
"applications/benchmarks/index", "applications/b [...]
\ No newline at end of file
diff --git a/content/docs/latest/_sources/applications/nsh/commands.rst.txt
b/content/docs/latest/_sources/applications/nsh/commands.rst.txt
index 56052bcc38..bc6abcafc2 100644
--- a/content/docs/latest/_sources/applications/nsh/commands.rst.txt
+++ b/content/docs/latest/_sources/applications/nsh/commands.rst.txt
@@ -198,6 +198,51 @@ Also sets the previous working directory environment
variable
``cd ..`` sets the current working directory to the parent
directory.
================== =====================================
+.. _cmdchmod:
+
+``chmod`` Change File Permissions
+==================================
+
+**Command Syntax**::
+
+ chmod <octal-mode> <path>
+
+**Synopsis**. Change the permission bits of ``<path>``. Only numeric
+(octal) modes are supported.
+
+**Example**::
+
+ nsh> chmod 600 /tmp/secret
+ nsh> chmod 755 /usr/bin/app
+
+.. _cmdchown:
+
+``chown`` Change File Owner and Group
+======================================
+
+**Command Syntax**::
+
+ chown <uid>[:gid] <path>
+
+**Synopsis**. Change the owner and/or group of ``<path>``. Only
+numeric uid and gid values are accepted. Omitted uid or gid fields
+are left unchanged.
+
+**Forms:**
+
+===================
===============================================================
+``chown uid:gid`` Sets owner to uid and group to gid.
+``chown uid`` Sets owner to uid; group is unchanged.
+``chown uid:`` Sets owner to uid; group is unchanged.
+``chown :gid`` Sets group to gid; owner is unchanged.
+===================
===============================================================
+
+**Example**::
+
+ nsh> chown 1000:1000 /tmp/file
+ nsh> chown 0: /tmp/file
+ nsh> chown :100 /tmp/file
+
.. _cmdcmp:
``cmp`` Compare Files
diff --git
a/content/docs/latest/_sources/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.rst.txt
b/content/docs/latest/_sources/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.rst.txt
index 6631614e9e..7d9e2ca11b 100644
---
a/content/docs/latest/_sources/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.rst.txt
+++
b/content/docs/latest/_sources/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.rst.txt
@@ -1,3 +1,5 @@
+.. _esp32p4-function-ev-board:
+
==========================
ESP32-P4-Function-EV-Board
==========================
diff --git
a/content/docs/latest/_sources/platforms/risc-v/esp32p4/index.rst.txt
b/content/docs/latest/_sources/platforms/risc-v/esp32p4/index.rst.txt
index 6727d465a1..03aef9e2c8 100644
--- a/content/docs/latest/_sources/platforms/risc-v/esp32p4/index.rst.txt
+++ b/content/docs/latest/_sources/platforms/risc-v/esp32p4/index.rst.txt
@@ -31,12 +31,19 @@ descriptions.
* Datasheet: `ESP32-P4 Datasheet (v1.3)
<https://documentation.espressif.com/esp32-p4-chip-revision-v1.3_datasheet_en.pdf>`_
* Technical Reference Manual: `ESP32-P4 TRM (v1.3)
<https://documentation.espressif.com/esp32-p4-chip-revision-v1.3_technical_reference_manual_en.pdf>`_
+.. note:: NuttX by default supports ESP32-P4 chip revisions v3.0 and above.
+ If your build and flash works fine but firmware does not run as
+ expected (i.e. stuck in a boot loop) then additional tuning is
+ required, see `ESP32-P4 Chip Revisions`_ section for details.
+
+
ESP32-P4 Toolchain
==================
-A generic RISC-V toolchain can be used to build ESP32-P4 projects. It's
recommended
-to use the same toolchain version used by NuttX CI for RISC-V.
-Please refer to the Docker
+A generic RISC-V toolchain can be used to build ESP32-P4 projects.
+You can use standard ``riscv32-esp-elf-gcc`` provided by ESP IDF Tools.
+However, it is recommended to use the same toolchain version as used by
+the NuttX CI for RISC-V. Please refer to our CI Docker configuration
`container
<https://github.com/apache/nuttx/tree/master/tools/ci/docker/linux/Dockerfile>`_
and check for the current compiler version being used. For instance:
@@ -75,6 +82,7 @@ Add the toolchain to your ``PATH``:
You can edit your shell's rc files if you don't use bash.
+
Building and flashing NuttX
===========================
@@ -193,6 +201,7 @@ The following is **not** supported when building with CMake
yet; use the Make-ba
* **ULP / LP core** — Low-power coprocessor support
(``CONFIG_ESPRESSIF_USE_LP_CORE``) is
not wired up for CMake (ULP/LP integration is TODO).
+
.. _esp32p4_debug:
Debugging
@@ -306,6 +315,7 @@ possible to track the root cause of the crash. Saving this
output to a file and
Backtrace for task 0:
0x4000bb20: up_idle at esp_idle.c:76
+
Peripheral Support
==================
@@ -373,7 +383,6 @@ Touch Sensor No
eFuse Yes Virtual eFuses supported
================= ======= ==================================
-
Security
--------
@@ -402,6 +411,7 @@ PMP/PMA Mo
:file:`arch/risc-v/src/common/espressif/Kconfig` for feature flags and
pin selections.
+
.. _esp32p4_ulp:
ULP LP Core Coprocessor
@@ -749,6 +759,42 @@ so ubsan can help to catch some errors. But note that it
will increase code size
it can happen that application won't fit into RTC RAM.
To enable ubsan for ULP please add ``CONFIG_ESPRESSIF_ULP_ENABLE_UBSAN`` in
menuconfig.
+
+ESP32-P4 Chip Revisions
+=======================
+
+.. attention:: NuttX by default supports ESP32-P4 chip revisions starting
+ from v3.0.
+
+Different ESP32-P4 chip revisions contain internal hardware breaking
+changes. Revisions 3.0 and higher are not compatible with 0.x and 1.x.
+Older chip revisions may work but require dedicated firmware builds.
+Compatibility is verified by the 2nd stage bootloader against following
+firmware build parameters: ``CONFIG_ESP32P4_SELECTS_REV_LESS_V3``,
+``CONFIG_ESP32P4_REV_*``, ``CONFIG_ESP_REV_*``,
+and ``CONFIG_ESP_EFUSE_BLOCK_REV_*``.
+These parameters are set with ``make menuconfig`` in the ``System Type`` menu:
+
+* ``Select ESP32-P4 revisions <3.0`` - enable if your chip is older than v3.0.
+* ``Minimum Supported ESP32-P4 Revision`` - select minimum chip revision
+ on which the firmware can boot, refuse to boot otherwise (boot loop).
+ Note that older chip revisions may contain bugs or have missing features.
+ Selecting wide range of supported revisions will increase firmware size.
+* ``Minimum Supported ESP32-P4 eFuse Block Revision`` - select minimum eFuse
+ block revision on which the firmware can boot, refuse to boot otherwise
+ (boot loop).
+
+You can check your chip revision with ``esptool`` utility that is used
+by ``make flash`` command, for instance::
+
+ esptool v5.2.0
+ Connected to ESP32-P4 on /dev/cuaU0:
+ Chip type: ESP32-P4 (revision v1.3)
+ Features: Dual Core + LP Core, 400MHz
+ Crystal frequency: 40MHz
+ MAC: XXX
+
+
Supported Boards
================
@@ -757,3 +803,13 @@ Supported Boards
:maxdepth: 1
boards/*/*
+
+Other Boards
+------------
+
+* `WaveShare ESP32-P4-Nano <https://www.waveshare.com/wiki/ESP32-P4-NANO>`_
+ is similar in design to
+ :ref:`ESP32-P4-Function-EV-Board <esp32p4-function-ev-board>`.
+ Aside from a few onboard component differences you can play around using
+ existing configurations for start. Note that it may contain ESP32-P4 v1.3 so
+ additional configuration tuning is required (see `ESP32-P4 Chip Revisions`_).
diff --git a/content/docs/latest/applications/nsh/commands.html
b/content/docs/latest/applications/nsh/commands.html
index 9b3d8a81ac..cd265cbcac 100644
--- a/content/docs/latest/applications/nsh/commands.html
+++ b/content/docs/latest/applications/nsh/commands.html
@@ -165,6 +165,8 @@
<li class="toctree-l4"><a class="reference internal"
href="#break-terminate-a-loop"><code class="docutils literal notranslate"><span
class="pre">break</span></code> Terminate a Loop</a></li>
<li class="toctree-l4"><a class="reference internal"
href="#cat-concatenate-files"><code class="docutils literal notranslate"><span
class="pre">cat</span></code> Concatenate Files</a></li>
<li class="toctree-l4"><a class="reference internal"
href="#cd-change-current-working-directory"><code class="docutils literal
notranslate"><span class="pre">cd</span></code> Change Current Working
Directory</a></li>
+<li class="toctree-l4"><a class="reference internal"
href="#chmod-change-file-permissions"><code class="docutils literal
notranslate"><span class="pre">chmod</span></code> Change File
Permissions</a></li>
+<li class="toctree-l4"><a class="reference internal"
href="#chown-change-file-owner-and-group"><code class="docutils literal
notranslate"><span class="pre">chown</span></code> Change File Owner and
Group</a></li>
<li class="toctree-l4"><a class="reference internal"
href="#cmp-compare-files"><code class="docutils literal notranslate"><span
class="pre">cmp</span></code> Compare Files</a></li>
<li class="toctree-l4"><a class="reference internal"
href="#cp-copy-files"><code class="docutils literal notranslate"><span
class="pre">cp</span></code> Copy Files</a></li>
<li class="toctree-l4"><a class="reference internal"
href="#date-show-or-set-the-date-and-time"><code class="docutils literal
notranslate"><span class="pre">date</span></code> Show or set the date and
time</a></li>
@@ -473,6 +475,53 @@ in the configuration file. The default home directory is
/.</p></td>
</tbody>
</table>
</section>
+<section id="chmod-change-file-permissions">
+<span id="cmdchmod"></span><h2><code class="docutils literal
notranslate"><span class="pre">chmod</span></code> Change File Permissions<a
class="headerlink" href="#chmod-change-file-permissions" title="Permalink to
this heading"></a></h2>
+<p><strong>Command Syntax</strong>:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>chmod <octal-mode> <path>
+</pre></div>
+</div>
+<p><strong>Synopsis</strong>. Change the permission bits of <code
class="docutils literal notranslate"><span
class="pre"><path></span></code>. Only numeric
+(octal) modes are supported.</p>
+<p><strong>Example</strong>:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>nsh> chmod 600 /tmp/secret
+nsh> chmod 755 /usr/bin/app
+</pre></div>
+</div>
+</section>
+<section id="chown-change-file-owner-and-group">
+<span id="cmdchown"></span><h2><code class="docutils literal
notranslate"><span class="pre">chown</span></code> Change File Owner and
Group<a class="headerlink" href="#chown-change-file-owner-and-group"
title="Permalink to this heading"></a></h2>
+<p><strong>Command Syntax</strong>:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>chown <uid>[:gid] <path>
+</pre></div>
+</div>
+<p><strong>Synopsis</strong>. Change the owner and/or group of <code
class="docutils literal notranslate"><span
class="pre"><path></span></code>. Only
+numeric uid and gid values are accepted. Omitted uid or gid fields
+are left unchanged.</p>
+<p><strong>Forms:</strong></p>
+<table class="docutils align-default">
+<tbody>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span
class="pre">chown</span> <span class="pre">uid:gid</span></code></p></td>
+<td><p>Sets owner to uid and group to gid.</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span
class="pre">chown</span> <span class="pre">uid</span></code></p></td>
+<td><p>Sets owner to uid; group is unchanged.</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span
class="pre">chown</span> <span class="pre">uid:</span></code></p></td>
+<td><p>Sets owner to uid; group is unchanged.</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span
class="pre">chown</span> <span class="pre">:gid</span></code></p></td>
+<td><p>Sets group to gid; owner is unchanged.</p></td>
+</tr>
+</tbody>
+</table>
+<p><strong>Example</strong>:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>nsh> chown 1000:1000 /tmp/file
+nsh> chown 0: /tmp/file
+nsh> chown :100 /tmp/file
+</pre></div>
+</div>
+</section>
<section id="cmp-compare-files">
<span id="cmdcmp"></span><h2><code class="docutils literal notranslate"><span
class="pre">cmp</span></code> Compare Files<a class="headerlink"
href="#cmp-compare-files" title="Permalink to this heading"></a></h2>
<p><strong>Command Syntax</strong>:</p>
diff --git a/content/docs/latest/applications/nsh/index.html
b/content/docs/latest/applications/nsh/index.html
index 3335c12f18..0e0b2fb46f 100644
--- a/content/docs/latest/applications/nsh/index.html
+++ b/content/docs/latest/applications/nsh/index.html
@@ -243,6 +243,8 @@ starts a given task instead of the main <code
class="docutils literal notranslat
<li class="toctree-l2"><a class="reference internal"
href="commands.html#break-terminate-a-loop"><code class="docutils literal
notranslate"><span class="pre">break</span></code> Terminate a Loop</a></li>
<li class="toctree-l2"><a class="reference internal"
href="commands.html#cat-concatenate-files"><code class="docutils literal
notranslate"><span class="pre">cat</span></code> Concatenate Files</a></li>
<li class="toctree-l2"><a class="reference internal"
href="commands.html#cd-change-current-working-directory"><code class="docutils
literal notranslate"><span class="pre">cd</span></code> Change Current Working
Directory</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="commands.html#chmod-change-file-permissions"><code class="docutils
literal notranslate"><span class="pre">chmod</span></code> Change File
Permissions</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="commands.html#chown-change-file-owner-and-group"><code class="docutils
literal notranslate"><span class="pre">chown</span></code> Change File Owner
and Group</a></li>
<li class="toctree-l2"><a class="reference internal"
href="commands.html#cmp-compare-files"><code class="docutils literal
notranslate"><span class="pre">cmp</span></code> Compare Files</a></li>
<li class="toctree-l2"><a class="reference internal"
href="commands.html#cp-copy-files"><code class="docutils literal
notranslate"><span class="pre">cp</span></code> Copy Files</a></li>
<li class="toctree-l2"><a class="reference internal"
href="commands.html#date-show-or-set-the-date-and-time"><code class="docutils
literal notranslate"><span class="pre">date</span></code> Show or set the date
and time</a></li>
diff --git a/content/docs/latest/guides/fully_linked_elf.html
b/content/docs/latest/guides/fully_linked_elf.html
index 55b0ce43a5..ce641acc31 100644
--- a/content/docs/latest/guides/fully_linked_elf.html
+++ b/content/docs/latest/guides/fully_linked_elf.html
@@ -484,7 +484,7 @@ NuttX package: <code class="docutils literal
notranslate"><span class="pre">nutt
<div
class="admonition-here-is-an-alternative-minimal-and-possibly-outdated-version
admonition">
<p class="admonition-title">Here is an alternative minimal (and possibly
outdated) version</p>
<div class="sphinx_collapse docutils">
-<input class="sphinx_collapse__input"
id="8ad68600-3f79-4dbd-b626-e7f3c8658737"
name="8ad68600-3f79-4dbd-b626-e7f3c8658737" type="checkbox"><label
class="sphinx_collapse__label" for="8ad68600-3f79-4dbd-b626-e7f3c8658737"><i
class="sphinx_collapse__icon"></i>Show content:</label><div
class="sphinx_collapse__content docutils">
+<input class="sphinx_collapse__input"
id="fcb6a169-4bd6-428c-9f67-fa814045cd3f"
name="fcb6a169-4bd6-428c-9f67-fa814045cd3f" type="checkbox"><label
class="sphinx_collapse__label" for="fcb6a169-4bd6-428c-9f67-fa814045cd3f"><i
class="sphinx_collapse__icon"></i>Show content:</label><div
class="sphinx_collapse__content docutils">
<div class="highlight-text notranslate"><div
class="highlight"><pre><span></span>SECTIONS
{
.text 0x00000000 :
diff --git a/content/docs/latest/guides/partially_linked_elf.html
b/content/docs/latest/guides/partially_linked_elf.html
index 5e29e79b73..dd2b0924f8 100644
--- a/content/docs/latest/guides/partially_linked_elf.html
+++ b/content/docs/latest/guides/partially_linked_elf.html
@@ -510,7 +510,7 @@ NuttX package: <code class="docutils literal
notranslate"><span class="pre">nutt
<div
class="admonition-here-is-an-alternative-minimal-and-possibly-outdated-version
admonition">
<p class="admonition-title">Here is an alternative minimal (and possibly
outdated) version</p>
<div class="sphinx_collapse docutils">
-<input class="sphinx_collapse__input"
id="5e49e55e-7482-4a8e-b390-188f9c1e0527"
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class="sphinx_collapse__icon"></i>Show content:</label><div
class="sphinx_collapse__content docutils">
+<input class="sphinx_collapse__input"
id="04d76002-c075-47ad-8db9-40b9089ee521"
name="04d76002-c075-47ad-8db9-40b9089ee521" type="checkbox"><label
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diff --git a/content/docs/latest/index.html b/content/docs/latest/index.html
index 4166ab9078..25c2a59feb 100644
--- a/content/docs/latest/index.html
+++ b/content/docs/latest/index.html
@@ -193,7 +193,7 @@ 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: 14 May 26 at 00:58</p>
+<p>Last Updated: 14 May 26 at 12:28</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 34d2f6a4d8..1effb8d4fc 100644
Binary files a/content/docs/latest/objects.inv and
b/content/docs/latest/objects.inv differ
diff --git
a/content/docs/latest/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.html
b/content/docs/latest/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.html
index 6959723975..8e1d7ab5d1 100644
---
a/content/docs/latest/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.html
+++
b/content/docs/latest/platforms/risc-v/esp32p4/boards/esp32p4-function-ev-board/index.html
@@ -159,8 +159,10 @@
<li class="toctree-l4"><a class="reference internal"
href="../../index.html#debugging">Debugging</a></li>
<li class="toctree-l4"><a class="reference internal"
href="../../index.html#peripheral-support">Peripheral Support</a></li>
<li class="toctree-l4"><a class="reference internal"
href="../../index.html#ulp-lp-core-coprocessor">ULP LP Core Coprocessor</a></li>
+<li class="toctree-l4"><a class="reference internal"
href="../../index.html#esp32-p4-chip-revisions">ESP32-P4 Chip Revisions</a></li>
<li class="toctree-l4 current"><a class="reference internal"
href="../../index.html#supported-boards">Supported Boards</a><ul
class="current">
<li class="toctree-l5 current"><a class="current reference internal"
href="#">ESP32-P4-Function-EV-Board</a></li>
+<li class="toctree-l5"><a class="reference internal"
href="../../index.html#other-boards">Other Boards</a></li>
</ul>
</li>
</ul>
@@ -235,7 +237,7 @@
<div itemprop="articleBody">
<section id="esp32-p4-function-ev-board">
-<h1>ESP32-P4-Function-EV-Board<a class="headerlink"
href="#esp32-p4-function-ev-board" title="Permalink to this heading"></a></h1>
+<span id="esp32p4-function-ev-board"></span><h1>ESP32-P4-Function-EV-Board<a
class="headerlink" href="#esp32-p4-function-ev-board" title="Permalink to this
heading"></a></h1>
<p class="tags"><span>Tags: </span><a class="sd-sphinx-override sd-badge
sd-bg-secondary sd-bg-text-secondary reference internal"
href="../../../../../_tags/chip-esp32p4.html"><span
class="doc">chip:esp32p4</span></a><span> </span><a class="sd-sphinx-override
sd-badge sd-bg-primary sd-bg-text-primary reference internal"
href="../../../../../_tags/arch-risc-v.html"><span
class="doc">arch:risc-v</span></a><span> </span><a class="sd-sphinx-override
sd-badge sd-bg-primary sd-bg-text-primary [...]
<figure class="align-center" id="id1">
<img alt="ESP32-P4-Function-EV-Board v1.5.2"
src="../../../../../_images/esp32-p4-function-ev-board-isometric_v1.5.2.png" />
diff --git a/content/docs/latest/platforms/risc-v/esp32p4/index.html
b/content/docs/latest/platforms/risc-v/esp32p4/index.html
index 8051f7024b..ff42697233 100644
--- a/content/docs/latest/platforms/risc-v/esp32p4/index.html
+++ b/content/docs/latest/platforms/risc-v/esp32p4/index.html
@@ -186,8 +186,10 @@
<li class="toctree-l5"><a class="reference internal"
href="#debugging-ulp-lp-core">Debugging ULP LP-Core</a></li>
</ul>
</li>
+<li class="toctree-l4"><a class="reference internal"
href="#esp32-p4-chip-revisions">ESP32-P4 Chip Revisions</a></li>
<li class="toctree-l4"><a class="reference internal"
href="#supported-boards">Supported Boards</a><ul>
<li class="toctree-l5"><a class="reference internal"
href="boards/esp32p4-function-ev-board/index.html">ESP32-P4-Function-EV-Board</a></li>
+<li class="toctree-l5"><a class="reference internal"
href="#other-boards">Other Boards</a></li>
</ul>
</li>
</ul>
@@ -288,11 +290,19 @@ descriptions.</p>
<li><p>Datasheet: <a class="reference external"
href="https://documentation.espressif.com/esp32-p4-chip-revision-v1.3_datasheet_en.pdf";>ESP32-P4
Datasheet (v1.3)</a></p></li>
<li><p>Technical Reference Manual: <a class="reference external"
href="https://documentation.espressif.com/esp32-p4-chip-revision-v1.3_technical_reference_manual_en.pdf";>ESP32-P4
TRM (v1.3)</a></p></li>
</ul>
+<div class="admonition note">
+<p class="admonition-title">Note</p>
+<p>NuttX by default supports ESP32-P4 chip revisions v3.0 and above.
+If your build and flash works fine but firmware does not run as
+expected (i.e. stuck in a boot loop) then additional tuning is
+required, see <a class="reference internal"
href="#esp32-p4-chip-revisions">ESP32-P4 Chip Revisions</a> section for
details.</p>
+</div>
<section id="esp32-p4-toolchain">
<h2>ESP32-P4 Toolchain<a class="headerlink" href="#esp32-p4-toolchain"
title="Permalink to this heading"></a></h2>
-<p>A generic RISC-V toolchain can be used to build ESP32-P4 projects. It’s
recommended
-to use the same toolchain version used by NuttX CI for RISC-V.
-Please refer to the Docker
+<p>A generic RISC-V toolchain can be used to build ESP32-P4 projects.
+You can use standard <code class="docutils literal notranslate"><span
class="pre">riscv32-esp-elf-gcc</span></code> provided by ESP IDF Tools.
+However, it is recommended to use the same toolchain version as used by
+the NuttX CI for RISC-V. Please refer to our CI Docker configuration
<a class="reference external"
href="https://github.com/apache/nuttx/tree/master/tools/ci/docker/linux/Dockerfile";>container</a>
and check for the current compiler version being used. For instance:</p>
<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>###############################################################################
@@ -1170,6 +1180,42 @@ it can happen that application won’t fit into RTC RAM.
To enable ubsan for ULP please add <code class="docutils literal
notranslate"><span class="pre">CONFIG_ESPRESSIF_ULP_ENABLE_UBSAN</span></code>
in menuconfig.</p>
</section>
</section>
+<section id="esp32-p4-chip-revisions">
+<h2>ESP32-P4 Chip Revisions<a class="headerlink"
href="#esp32-p4-chip-revisions" title="Permalink to this heading"></a></h2>
+<div class="admonition attention">
+<p class="admonition-title">Attention</p>
+<p>NuttX by default supports ESP32-P4 chip revisions starting
+from v3.0.</p>
+</div>
+<p>Different ESP32-P4 chip revisions contain internal hardware breaking
+changes. Revisions 3.0 and higher are not compatible with 0.x and 1.x.
+Older chip revisions may work but require dedicated firmware builds.
+Compatibility is verified by the 2nd stage bootloader against following
+firmware build parameters: <code class="docutils literal notranslate"><span
class="pre">CONFIG_ESP32P4_SELECTS_REV_LESS_V3</span></code>,
+<code class="docutils literal notranslate"><span
class="pre">CONFIG_ESP32P4_REV_*</span></code>, <code class="docutils literal
notranslate"><span class="pre">CONFIG_ESP_REV_*</span></code>,
+and <code class="docutils literal notranslate"><span
class="pre">CONFIG_ESP_EFUSE_BLOCK_REV_*</span></code>.
+These parameters are set with <code class="docutils literal notranslate"><span
class="pre">make</span> <span class="pre">menuconfig</span></code> in the <code
class="docutils literal notranslate"><span class="pre">System</span> <span
class="pre">Type</span></code> menu:</p>
+<ul class="simple">
+<li><p><code class="docutils literal notranslate"><span
class="pre">Select</span> <span class="pre">ESP32-P4</span> <span
class="pre">revisions</span> <span class="pre"><3.0</span></code> - enable
if your chip is older than v3.0.</p></li>
+<li><p><code class="docutils literal notranslate"><span
class="pre">Minimum</span> <span class="pre">Supported</span> <span
class="pre">ESP32-P4</span> <span class="pre">Revision</span></code> - select
minimum chip revision
+on which the firmware can boot, refuse to boot otherwise (boot loop).
+Note that older chip revisions may contain bugs or have missing features.
+Selecting wide range of supported revisions will increase firmware
size.</p></li>
+<li><p><code class="docutils literal notranslate"><span
class="pre">Minimum</span> <span class="pre">Supported</span> <span
class="pre">ESP32-P4</span> <span class="pre">eFuse</span> <span
class="pre">Block</span> <span class="pre">Revision</span></code> - select
minimum eFuse
+block revision on which the firmware can boot, refuse to boot otherwise
+(boot loop).</p></li>
+</ul>
+<p>You can check your chip revision with <code class="docutils literal
notranslate"><span class="pre">esptool</span></code> utility that is used
+by <code class="docutils literal notranslate"><span class="pre">make</span>
<span class="pre">flash</span></code> command, for instance:</p>
+<div class="highlight-none notranslate"><div
class="highlight"><pre><span></span>esptool v5.2.0
+Connected to ESP32-P4 on /dev/cuaU0:
+Chip type: ESP32-P4 (revision v1.3)
+Features: Dual Core + LP Core, 400MHz
+Crystal frequency: 40MHz
+MAC: XXX
+</pre></div>
+</div>
+</section>
<section id="supported-boards">
<h2>Supported Boards<a class="headerlink" href="#supported-boards"
title="Permalink to this heading"></a></h2>
<div class="toctree-wrapper compound">
@@ -1177,6 +1223,17 @@ To enable ubsan for ULP please add <code class="docutils
literal notranslate"><s
<li class="toctree-l1"><a class="reference internal"
href="boards/esp32p4-function-ev-board/index.html">ESP32-P4-Function-EV-Board</a></li>
</ul>
</div>
+<section id="other-boards">
+<h3>Other Boards<a class="headerlink" href="#other-boards" title="Permalink to
this heading"></a></h3>
+<ul class="simple">
+<li><p><a class="reference external"
href="https://www.waveshare.com/wiki/ESP32-P4-NANO";>WaveShare ESP32-P4-Nano</a>
+is similar in design to
+<a class="reference internal"
href="boards/esp32p4-function-ev-board/index.html#esp32p4-function-ev-board"><span
class="std std-ref">ESP32-P4-Function-EV-Board</span></a>.
+Aside from a few onboard component differences you can play around using
+existing configurations for start. Note that it may contain ESP32-P4 v1.3 so
+additional configuration tuning is required (see <a class="reference internal"
href="#esp32-p4-chip-revisions">ESP32-P4 Chip Revisions</a>).</p></li>
+</ul>
+</section>
</section>
</section>
diff --git a/content/docs/latest/searchindex.js
b/content/docs/latest/searchindex.js
index 72d745b544..53599ed0d1 100644
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diff --git a/content/feed.xml b/content/feed.xml
index b163c6f8d3..d9a8d6b3de 100644
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