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boards/linum-stm32h753bi: add curl config and document the curl command
Add a "curl" configuration for the linum-stm32h753bi board, based on the netnsh configuration (ethernet + DHCP). It enables the system/curl HTTP client command, SD card support (mounted manually, as in the sdcard configuration) and a larger console line buffer (CONFIG_LINE_MAX=256) so long URLs and JSON bodies are not truncated at the NSH prompt. Also document the curl command: add a man page under Documentation/applications/system/curl and a usage example (download, POST JSON, multipart upload) to the board documentation. Signed-off-by: Jorge Guzman <jorge.gzm@gmail.com>
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Jorge Guzman
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107
Documentation/applications/system/curl/index.rst
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107
Documentation/applications/system/curl/index.rst
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===============================
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``curl`` HTTP client command
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===============================
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The ``curl`` command is a small command-line HTTP client built on top of the
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``netutils`` webclient library. It mimics a subset of the well known
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`curl <https://curl.se/docs/manpage.html>`_ tool so the same option syntax can
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be used to exercise HTTP servers from the NuttShell (NSH).
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It is **HTTP only** (no HTTPS/TLS) and supports the following options:
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============ ================================================================
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Option Description
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============ ================================================================
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``-X`` HTTP method (default ``GET``, or ``POST`` when a body is sent).
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``-H`` Add a request header (e.g. ``-H Content-Type:application/json``).
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``-d`` Raw request body; ``-d @file`` reads the body from a file.
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``-F`` multipart/form-data field; ``-F name=@file`` uploads a file.
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``-o`` Write the response body to a file instead of stdout.
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``-v`` Verbose: print the request line and status.
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============ ================================================================
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Configuration
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=============
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- ``CONFIG_SYSTEM_CURL``: Enable the ``curl`` command.
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- ``CONFIG_NETUTILS_WEBCLIENT``: HTTP client library (required dependency).
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- ``CONFIG_NET_TCP``: TCP support (required by the webclient).
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The following additional options are available:
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- ``CONFIG_SYSTEM_CURL_PROGNAME`` - Program name (default: ``curl``).
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- ``CONFIG_SYSTEM_CURL_PRIORITY`` - Task priority (default: 100).
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- ``CONFIG_SYSTEM_CURL_STACKSIZE`` - Task stack size. A networked HTTP
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client needs a comfortable stack; 8192 is a safe value.
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- ``CONFIG_SYSTEM_CURL_BUFFERSIZE`` - Transfer buffer size (default: 512).
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It must be large enough to hold the whole request/response header line.
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Usage
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=====
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.. code-block:: text
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curl [options] <url> ...
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Examples
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========
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Download a file and save it with ``-o`` (using the public ``httpbin.org``
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HTTP test service):
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.. code-block:: text
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nsh> curl -o /mnt/dl.json http://httpbin.org/json
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curl: HTTP 200
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nsh> curl -o /mnt/img.png http://httpbin.org/image/png
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curl: HTTP 200
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nsh> ls -l /mnt/img.png
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-rw-rw-rw- 8090 /mnt/img.png
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Send a JSON body with POST (``-d`` selects ``POST`` automatically, ``-H`` sets
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the content type). ``httpbin.org/post`` echoes back what it received:
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.. code-block:: text
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nsh> curl -H Content-Type:application/json -d '{"temp":25.3,"hum":60}' http://httpbin.org/post
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{
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"data": "{\"temp\":25.3,\"hum\":60}",
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"headers": {
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"Content-Type": "application/json",
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"Host": "httpbin.org"
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},
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"json": {
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"hum": 60,
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"temp": 25.3
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},
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"url": "http://httpbin.org/post"
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}
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curl: HTTP 200
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Select a different method with ``-X``:
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.. code-block:: text
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nsh> curl -X PUT -d '{"x":1}' http://httpbin.org/put
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curl: HTTP 200
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Upload a file with multipart/form-data (``-F name=@file``) and download it
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back with ``-o``:
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.. code-block:: text
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nsh> curl -F file=@/mnt/nuttx_logo.png "http://192.168.1.10:8000/upload?version=logo1"
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{"filename":"nuttx_logo.png","sha256":"ca278dcb...","size_bytes":40343}curl: HTTP 201
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nsh> curl -o /mnt/logo_back.png http://192.168.1.10:8000/download/logo1/nuttx_logo.png
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curl: HTTP 200
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.. note::
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The webclient transfer buffer is small and the request has a short timeout,
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so prefer small files (a few KB up to ~100 KB). HTTPS is not supported; use
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plain ``http://`` URLs only.
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See Also
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========
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- `curl manual page <https://curl.se/docs/manpage.html>`_
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@ -802,6 +802,92 @@ This configuration is focused on network testing using the ethernet periferal::
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10 packets transmitted, 10 received, 0% packet loss, time 10100 ms
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rtt min/avg/max/mdev = 0.000/1.000/10.000/3.000 ms
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curl
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----
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Based on the ``netnsh`` configuration (ethernet + DHCP), this configuration adds
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the ``curl`` HTTP client command (``system/curl`` on top of
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``netutils/webclient``), SD card support (same as the ``sdcard`` configuration,
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mounted manually) and a larger console line buffer (``CONFIG_LINE_MAX=256``) so
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long URLs and JSON bodies are not truncated when typed at the NSH prompt.
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It implements a subset of the real ``curl`` options: ``-X`` (method), ``-H``
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(header), ``-d`` (request body, also ``-d @file``), ``-F name=@file``
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(multipart/form-data upload), ``-o`` (save the response to a file) and ``-v``
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(verbose). It is HTTP only (no HTTPS). For the full option semantics see the
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curl manual page: https://curl.se/docs/manpage.html
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Mount the SD card (destination for downloads) and bring up the network::
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nsh> mount -t vfat /dev/mmcsd0 /mnt
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nsh> ifconfig
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eth0 Link encap:Ethernet HWaddr 00:e0:de:ad:be:ef at RUNNING mtu 1486
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inet addr:192.168.15.3 DRaddr:192.168.15.1 Mask:255.255.255.0
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Download a file and save it on the SD card with ``-o`` (a public HTTP test
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service such as ``httpbin.org`` requires the gateway to have internet access)::
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nsh> curl -o /mnt/dl.json http://httpbin.org/json
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curl: HTTP 200
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nsh> cat /mnt/dl.json
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{
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"slideshow": {
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"author": "Yours Truly",
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"title": "Sample Slide Show",
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...
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}
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}
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nsh> curl -o /mnt/1kb.bin http://httpbin.org/bytes/1024
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curl: HTTP 200
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nsh> curl -o /mnt/img.png http://httpbin.org/image/png
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curl: HTTP 200
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nsh> ls -l /mnt/img.png
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-rw-rw-rw- 8090 /mnt/img.png
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Send a JSON body with POST (``-d`` selects POST automatically; ``-H`` sets the
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content type). The ``httpbin.org/post`` endpoint echoes back what it received::
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nsh> curl -H Content-Type:application/json -d '{"temp":25.3,"hum":60}' http://httpbin.org/post
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{
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"data": "{\"temp\":25.3,\"hum\":60}",
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"headers": {
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"Content-Type": "application/json",
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"Host": "httpbin.org",
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...
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},
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"json": {
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"hum": 60,
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"temp": 25.3
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},
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"url": "http://httpbin.org/post"
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}
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curl: HTTP 200
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Select a different HTTP method with ``-X``::
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nsh> curl -X PUT -d '{"x":1}' http://httpbin.org/put
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curl: HTTP 200
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Upload a file with multipart/form-data (``-F name=@file``) and download it back
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with ``-o`` (this example targets a local server that stores the file and serves
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it again)::
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nsh> curl -F file=@/mnt/nuttx_logo.png "http://192.168.15.12:8000/api/projects/default/ota/upload?version=logo1"
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{"id":3,"version":"logo1","filename":"nuttx_logo.png","sha256":"ca278dcb...abed1ba","size_bytes":40343}curl: HTTP 201
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nsh> curl -o /mnt/logo_back.png http://192.168.15.12:8000/api/api/ota/default/logo1/nuttx_logo.png
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curl: HTTP 200
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nsh> ls -l /mnt
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-rw-rw-rw- 40343 nuttx_logo.png
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-rw-rw-rw- 40343 logo_back.png
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.. note::
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The webclient transfer buffer is small and the request has a ~10 s timeout,
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so prefer small files (a few KB up to ~100 KB). HTTPS is not supported; use
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plain ``http://`` URLs only. When there is no internet on the bench, point
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``curl`` at a server on the local network instead of a public test service.
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qencoder
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--------
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107
boards/arm/stm32h7/linum-stm32h753bi/configs/curl/defconfig
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107
boards/arm/stm32h7/linum-stm32h753bi/configs/curl/defconfig
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#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_MMCSD_MMCSUPPORT is not set
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# CONFIG_STANDARD_SERIAL is not set
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CONFIG_ARCH="arm"
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CONFIG_ARCH_BOARD="linum-stm32h753bi"
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CONFIG_ARCH_BOARD_LINUM_STM32H753BI=y
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CONFIG_ARCH_CHIP="stm32h7"
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CONFIG_ARCH_CHIP_STM32=y
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CONFIG_ARCH_CHIP_STM32H753BI=y
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CONFIG_ARCH_CHIP_STM32H7=y
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CONFIG_ARCH_CHIP_STM32H7_CORTEXM7=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARMV7M_DCACHE=y
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CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
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CONFIG_ARMV7M_DTCM=y
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CONFIG_ARMV7M_ICACHE=y
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CONFIG_BOARD_LOOPSPERMSEC=43103
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CONFIG_BUILTIN=y
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CONFIG_DEBUG_FEATURES=y
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CONFIG_DEBUG_SYMBOLS=y
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CONFIG_ETH0_PHY_KSZ8081=y
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CONFIG_EXAMPLES_ALARM=y
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CONFIG_FAT_DMAMEMORY=y
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CONFIG_FAT_LCNAMES=y
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CONFIG_FAT_LFN=y
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CONFIG_FS_FAT=y
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CONFIG_FS_PROCFS=y
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CONFIG_FS_TMPFS=y
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CONFIG_GRAN=y
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CONFIG_GRAN_INTR=y
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CONFIG_INIT_ENTRYPOINT="nsh_main"
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CONFIG_INIT_STACKSIZE=4096
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CONFIG_INTELHEX_BINARY=y
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CONFIG_LIBC_MEMFD_ERROR=y
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CONFIG_LIBM=y
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CONFIG_LINE_MAX=256
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CONFIG_MMCSD=y
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CONFIG_MMCSD_SDIO=y
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CONFIG_MMCSD_SDIOWAIT_WRCOMPLETE=y
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CONFIG_MM_REGIONS=4
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CONFIG_NET=y
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CONFIG_NETDB_DNSCLIENT=y
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CONFIG_NETDB_DNSSERVER_IPv4ADDR=0x08080808
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CONFIG_NETDEV_PHY_DEBUG=y
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CONFIG_NETINIT_DHCPC=y
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CONFIG_NETINIT_DRIPADDR=0x08080808
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CONFIG_NETINIT_NOMAC=y
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CONFIG_NETINIT_THREAD=y
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CONFIG_NETUTILS_DHCPC=y
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CONFIG_NETUTILS_DISCOVER=y
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CONFIG_NETUTILS_TELNETD=y
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CONFIG_NETUTILS_WEBCLIENT=y
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CONFIG_NET_ARP_IPIN=y
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CONFIG_NET_BROADCAST=y
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CONFIG_NET_ETH_PKTSIZE=1500
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CONFIG_NET_ICMP_SOCKET=y
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CONFIG_NET_IGMP=y
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CONFIG_NET_ROUTE=y
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CONFIG_NET_STATISTICS=y
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CONFIG_NET_TCP=y
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CONFIG_NET_UDP=y
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CONFIG_NSH_BUILTIN_APPS=y
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CONFIG_NSH_DISABLE_IFUPDOWN=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_READLINE=y
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CONFIG_PREALLOC_TIMERS=4
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CONFIG_RAM_SIZE=245760
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CONFIG_RAM_START=0x20010000
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CONFIG_RAW_BINARY=y
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CONFIG_READLINE_CMD_HISTORY=y
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CONFIG_READLINE_TABCOMPLETION=y
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CONFIG_RR_INTERVAL=200
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CONFIG_RTC_ALARM=y
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CONFIG_RTC_DATETIME=y
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CONFIG_RTC_DRIVER=y
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CONFIG_SCHED_HPWORK=y
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CONFIG_SCHED_WAITPID=y
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CONFIG_SDMMC1_SDIO_MODE=y
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CONFIG_START_DAY=6
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CONFIG_START_MONTH=12
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CONFIG_START_YEAR=2011
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CONFIG_STM32_ETHMAC=y
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CONFIG_STM32_HSI48=y
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CONFIG_STM32_PHYSR=30
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CONFIG_STM32_PHYSR_100FD=0x6
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CONFIG_STM32_PHYSR_100HD=0x2
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CONFIG_STM32_PHYSR_10FD=0x5
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CONFIG_STM32_PHYSR_10HD=0x1
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CONFIG_STM32_PHYSR_ALTCONFIG=y
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CONFIG_STM32_PHYSR_ALTMODE=0x7
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CONFIG_STM32_PWR=y
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CONFIG_STM32_RMII_MCO1=y
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CONFIG_STM32_RTC=y
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CONFIG_STM32_SDMMC1=y
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CONFIG_STM32_USART1=y
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CONFIG_SYSTEM_CURL=y
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CONFIG_SYSTEM_CURL_STACKSIZE=8192
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CONFIG_SYSTEM_NSH=y
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CONFIG_SYSTEM_PING=y
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CONFIG_TASK_NAME_SIZE=0
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CONFIG_USART1_SERIAL_CONSOLE=y
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