pico_lwip_http

LwIP HTTP client and server library.

LwIP HTTP client and server library.

This library enables you to make use of the LwIP HTTP client and server library

LwIP HTTP server

To make use of the LwIP HTTP server you need to provide the HTML that the server will return to the client. This is done by compiling the content directly into the executable.

makefsdata

LwIP provides a c-library tool makefsdata to compile your HTML into a source file for inclusion into your program. This is quite hard to use as you need to compile the tool as a native binary, then run the tool to generate a source file before compiling your code for the Pico device.

pico_set_lwip_httpd_content

To make this whole process easier, a python script makefsdata.py is provided to generate a source file for your HTML content. A CMake function pico_set_lwip_httpd_content takes care of running the makefsdata.py python script for you. To make use of this, specify the name of the source file as pico_fsdata.inc in lwipopts.h.

#define HTTPD_FSDATA_FILE "pico_fsdata.inc"

Then call the CMake function pico_set_lwip_httpd_content in your CMakeLists.txt to add your content to a library. Make sure you add this library to your executable by adding it to your target_link_libraries list. Here is an example from the httpd example in pico-examples.

pico_add_library(pico_httpd_content NOFLAG)
pico_set_lwip_httpd_content(pico_httpd_content INTERFACE
       ${CMAKE_CURRENT_LIST_DIR}/content/404.html
       ${CMAKE_CURRENT_LIST_DIR}/content/index.shtml
       ${CMAKE_CURRENT_LIST_DIR}/content/test.shtml
       ${CMAKE_CURRENT_LIST_DIR}/content/ledpass.shtml
       ${CMAKE_CURRENT_LIST_DIR}/content/ledfail.shtml
       ${CMAKE_CURRENT_LIST_DIR}/content/img/rpi.png
       )