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>
This commit is contained in:
Jorge Guzman 2026-07-19 14:13:21 -03:00 committed by Xiang Xiao
parent e2ff8be900
commit 13c6c7032e
3 changed files with 300 additions and 0 deletions

View file

@ -0,0 +1,107 @@
===============================
``curl`` HTTP client command
===============================
The ``curl`` command is a small command-line HTTP client built on top of the
``netutils`` webclient library. It mimics a subset of the well known
`curl <https://curl.se/docs/manpage.html>`_ tool so the same option syntax can
be used to exercise HTTP servers from the NuttShell (NSH).
It is **HTTP only** (no HTTPS/TLS) and supports the following options:
============ ================================================================
Option Description
============ ================================================================
``-X`` HTTP method (default ``GET``, or ``POST`` when a body is sent).
``-H`` Add a request header (e.g. ``-H Content-Type:application/json``).
``-d`` Raw request body; ``-d @file`` reads the body from a file.
``-F`` multipart/form-data field; ``-F name=@file`` uploads a file.
``-o`` Write the response body to a file instead of stdout.
``-v`` Verbose: print the request line and status.
============ ================================================================
Configuration
=============
- ``CONFIG_SYSTEM_CURL``: Enable the ``curl`` command.
- ``CONFIG_NETUTILS_WEBCLIENT``: HTTP client library (required dependency).
- ``CONFIG_NET_TCP``: TCP support (required by the webclient).
The following additional options are available:
- ``CONFIG_SYSTEM_CURL_PROGNAME`` - Program name (default: ``curl``).
- ``CONFIG_SYSTEM_CURL_PRIORITY`` - Task priority (default: 100).
- ``CONFIG_SYSTEM_CURL_STACKSIZE`` - Task stack size. A networked HTTP
client needs a comfortable stack; 8192 is a safe value.
- ``CONFIG_SYSTEM_CURL_BUFFERSIZE`` - Transfer buffer size (default: 512).
It must be large enough to hold the whole request/response header line.
Usage
=====
.. code-block:: text
curl [options] <url> ...
Examples
========
Download a file and save it with ``-o`` (using the public ``httpbin.org``
HTTP test service):
.. code-block:: text
nsh> curl -o /mnt/dl.json http://httpbin.org/json
curl: HTTP 200
nsh> curl -o /mnt/img.png http://httpbin.org/image/png
curl: HTTP 200
nsh> ls -l /mnt/img.png
-rw-rw-rw- 8090 /mnt/img.png
Send a JSON body with POST (``-d`` selects ``POST`` automatically, ``-H`` sets
the content type). ``httpbin.org/post`` echoes back what it received:
.. code-block:: text
nsh> curl -H Content-Type:application/json -d '{"temp":25.3,"hum":60}' http://httpbin.org/post
{
"data": "{\"temp\":25.3,\"hum\":60}",
"headers": {
"Content-Type": "application/json",
"Host": "httpbin.org"
},
"json": {
"hum": 60,
"temp": 25.3
},
"url": "http://httpbin.org/post"
}
curl: HTTP 200
Select a different method with ``-X``:
.. code-block:: text
nsh> curl -X PUT -d '{"x":1}' http://httpbin.org/put
curl: HTTP 200
Upload a file with multipart/form-data (``-F name=@file``) and download it
back with ``-o``:
.. code-block:: text
nsh> curl -F file=@/mnt/nuttx_logo.png "http://192.168.1.10:8000/upload?version=logo1"
{"filename":"nuttx_logo.png","sha256":"ca278dcb...","size_bytes":40343}curl: HTTP 201
nsh> curl -o /mnt/logo_back.png http://192.168.1.10:8000/download/logo1/nuttx_logo.png
curl: HTTP 200
.. note::
The webclient transfer buffer is small and the request has a short timeout,
so prefer small files (a few KB up to ~100 KB). HTTPS is not supported; use
plain ``http://`` URLs only.
See Also
========
- `curl manual page <https://curl.se/docs/manpage.html>`_

View file

@ -802,6 +802,92 @@ This configuration is focused on network testing using the ethernet periferal::
10 packets transmitted, 10 received, 0% packet loss, time 10100 ms
rtt min/avg/max/mdev = 0.000/1.000/10.000/3.000 ms
curl
----
Based on the ``netnsh`` configuration (ethernet + DHCP), this configuration adds
the ``curl`` HTTP client command (``system/curl`` on top of
``netutils/webclient``), SD card support (same as the ``sdcard`` configuration,
mounted manually) and a larger console line buffer (``CONFIG_LINE_MAX=256``) so
long URLs and JSON bodies are not truncated when typed at the NSH prompt.
It implements a subset of the real ``curl`` options: ``-X`` (method), ``-H``
(header), ``-d`` (request body, also ``-d @file``), ``-F name=@file``
(multipart/form-data upload), ``-o`` (save the response to a file) and ``-v``
(verbose). It is HTTP only (no HTTPS). For the full option semantics see the
curl manual page: https://curl.se/docs/manpage.html
Mount the SD card (destination for downloads) and bring up the network::
nsh> mount -t vfat /dev/mmcsd0 /mnt
nsh> ifconfig
eth0 Link encap:Ethernet HWaddr 00:e0:de:ad:be:ef at RUNNING mtu 1486
inet addr:192.168.15.3 DRaddr:192.168.15.1 Mask:255.255.255.0
Download a file and save it on the SD card with ``-o`` (a public HTTP test
service such as ``httpbin.org`` requires the gateway to have internet access)::
nsh> curl -o /mnt/dl.json http://httpbin.org/json
curl: HTTP 200
nsh> cat /mnt/dl.json
{
"slideshow": {
"author": "Yours Truly",
"title": "Sample Slide Show",
...
}
}
nsh> curl -o /mnt/1kb.bin http://httpbin.org/bytes/1024
curl: HTTP 200
nsh> curl -o /mnt/img.png http://httpbin.org/image/png
curl: HTTP 200
nsh> ls -l /mnt/img.png
-rw-rw-rw- 8090 /mnt/img.png
Send a JSON body with POST (``-d`` selects POST automatically; ``-H`` sets the
content type). The ``httpbin.org/post`` endpoint echoes back what it received::
nsh> curl -H Content-Type:application/json -d '{"temp":25.3,"hum":60}' http://httpbin.org/post
{
"data": "{\"temp\":25.3,\"hum\":60}",
"headers": {
"Content-Type": "application/json",
"Host": "httpbin.org",
...
},
"json": {
"hum": 60,
"temp": 25.3
},
"url": "http://httpbin.org/post"
}
curl: HTTP 200
Select a different HTTP method with ``-X``::
nsh> curl -X PUT -d '{"x":1}' http://httpbin.org/put
curl: HTTP 200
Upload a file with multipart/form-data (``-F name=@file``) and download it back
with ``-o`` (this example targets a local server that stores the file and serves
it again)::
nsh> curl -F file=@/mnt/nuttx_logo.png "http://192.168.15.12:8000/api/projects/default/ota/upload?version=logo1"
{"id":3,"version":"logo1","filename":"nuttx_logo.png","sha256":"ca278dcb...abed1ba","size_bytes":40343}curl: HTTP 201
nsh> curl -o /mnt/logo_back.png http://192.168.15.12:8000/api/api/ota/default/logo1/nuttx_logo.png
curl: HTTP 200
nsh> ls -l /mnt
-rw-rw-rw- 40343 nuttx_logo.png
-rw-rw-rw- 40343 logo_back.png
.. note::
The webclient transfer buffer is small and the request has a ~10 s timeout,
so prefer small files (a few KB up to ~100 KB). HTTPS is not supported; use
plain ``http://`` URLs only. When there is no internet on the bench, point
``curl`` at a server on the local network instead of a public test service.
qencoder
--------

View file

@ -0,0 +1,107 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_MMCSD_MMCSUPPORT is not set
# CONFIG_STANDARD_SERIAL is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="linum-stm32h753bi"
CONFIG_ARCH_BOARD_LINUM_STM32H753BI=y
CONFIG_ARCH_CHIP="stm32h7"
CONFIG_ARCH_CHIP_STM32=y
CONFIG_ARCH_CHIP_STM32H753BI=y
CONFIG_ARCH_CHIP_STM32H7=y
CONFIG_ARCH_CHIP_STM32H7_CORTEXM7=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_ARMV7M_DCACHE=y
CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y
CONFIG_ARMV7M_DTCM=y
CONFIG_ARMV7M_ICACHE=y
CONFIG_BOARD_LOOPSPERMSEC=43103
CONFIG_BUILTIN=y
CONFIG_DEBUG_FEATURES=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_ETH0_PHY_KSZ8081=y
CONFIG_EXAMPLES_ALARM=y
CONFIG_FAT_DMAMEMORY=y
CONFIG_FAT_LCNAMES=y
CONFIG_FAT_LFN=y
CONFIG_FS_FAT=y
CONFIG_FS_PROCFS=y
CONFIG_FS_TMPFS=y
CONFIG_GRAN=y
CONFIG_GRAN_INTR=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_INIT_STACKSIZE=4096
CONFIG_INTELHEX_BINARY=y
CONFIG_LIBC_MEMFD_ERROR=y
CONFIG_LIBM=y
CONFIG_LINE_MAX=256
CONFIG_MMCSD=y
CONFIG_MMCSD_SDIO=y
CONFIG_MMCSD_SDIOWAIT_WRCOMPLETE=y
CONFIG_MM_REGIONS=4
CONFIG_NET=y
CONFIG_NETDB_DNSCLIENT=y
CONFIG_NETDB_DNSSERVER_IPv4ADDR=0x08080808
CONFIG_NETDEV_PHY_DEBUG=y
CONFIG_NETINIT_DHCPC=y
CONFIG_NETINIT_DRIPADDR=0x08080808
CONFIG_NETINIT_NOMAC=y
CONFIG_NETINIT_THREAD=y
CONFIG_NETUTILS_DHCPC=y
CONFIG_NETUTILS_DISCOVER=y
CONFIG_NETUTILS_TELNETD=y
CONFIG_NETUTILS_WEBCLIENT=y
CONFIG_NET_ARP_IPIN=y
CONFIG_NET_BROADCAST=y
CONFIG_NET_ETH_PKTSIZE=1500
CONFIG_NET_ICMP_SOCKET=y
CONFIG_NET_IGMP=y
CONFIG_NET_ROUTE=y
CONFIG_NET_STATISTICS=y
CONFIG_NET_TCP=y
CONFIG_NET_UDP=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_DISABLE_IFUPDOWN=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_READLINE=y
CONFIG_PREALLOC_TIMERS=4
CONFIG_RAM_SIZE=245760
CONFIG_RAM_START=0x20010000
CONFIG_RAW_BINARY=y
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_READLINE_TABCOMPLETION=y
CONFIG_RR_INTERVAL=200
CONFIG_RTC_ALARM=y
CONFIG_RTC_DATETIME=y
CONFIG_RTC_DRIVER=y
CONFIG_SCHED_HPWORK=y
CONFIG_SCHED_WAITPID=y
CONFIG_SDMMC1_SDIO_MODE=y
CONFIG_START_DAY=6
CONFIG_START_MONTH=12
CONFIG_START_YEAR=2011
CONFIG_STM32_ETHMAC=y
CONFIG_STM32_HSI48=y
CONFIG_STM32_PHYSR=30
CONFIG_STM32_PHYSR_100FD=0x6
CONFIG_STM32_PHYSR_100HD=0x2
CONFIG_STM32_PHYSR_10FD=0x5
CONFIG_STM32_PHYSR_10HD=0x1
CONFIG_STM32_PHYSR_ALTCONFIG=y
CONFIG_STM32_PHYSR_ALTMODE=0x7
CONFIG_STM32_PWR=y
CONFIG_STM32_RMII_MCO1=y
CONFIG_STM32_RTC=y
CONFIG_STM32_SDMMC1=y
CONFIG_STM32_USART1=y
CONFIG_SYSTEM_CURL=y
CONFIG_SYSTEM_CURL_STACKSIZE=8192
CONFIG_SYSTEM_NSH=y
CONFIG_SYSTEM_PING=y
CONFIG_TASK_NAME_SIZE=0
CONFIG_USART1_SERIAL_CONSOLE=y