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modified picow access point example to use lwip http server #701

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modified picow access point example to use lwip http server #701

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489fce1
modified picow access point example to use lwip http server
Louis31423142 Aug 22, 2025
431e689
Update pico_w/wifi/access_point/picow_access_point.c
Louis31423142 Aug 22, 2025
d316952
applied suggested changes
Louis31423142 Aug 22, 2025
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13 changes: 13 additions & 0 deletions pico_w/wifi/access_point/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,15 @@ target_include_directories(picow_access_point_background PRIVATE
${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts
${CMAKE_CURRENT_LIST_DIR}/dhcpserver
${CMAKE_CURRENT_LIST_DIR}/dnsserver
${PICO_LWIP_CONTRIB_PATH}/apps/httpd
)

target_link_libraries(picow_access_point_background
pico_cyw43_arch_lwip_threadsafe_background
pico_stdlib
pico_lwip_http
ap_content
pico_status_led
)
# You can change the address below to change the address of the access point
pico_configure_ip4_address(picow_access_point_background PRIVATE
Expand All @@ -31,13 +35,22 @@ target_include_directories(picow_access_point_poll PRIVATE
${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts
${CMAKE_CURRENT_LIST_DIR}/dhcpserver
${CMAKE_CURRENT_LIST_DIR}/dnsserver
${PICO_LWIP_CONTRIB_PATH}/apps/httpd
)
target_link_libraries(picow_access_point_poll
pico_cyw43_arch_lwip_poll
pico_stdlib
pico_lwip_http
ap_content
pico_status_led
)
# You can change the address below to change the address of the access point
pico_configure_ip4_address(picow_access_point_poll PRIVATE
CYW43_DEFAULT_IP_AP_ADDRESS 192.168.4.1
)
pico_add_extra_outputs(picow_access_point_poll)

pico_add_library(ap_content NOFLAG)
pico_set_lwip_httpd_content(ap_content INTERFACE
${CMAKE_CURRENT_LIST_DIR}/content/index.shtml
)
13 changes: 13 additions & 0 deletions pico_w/wifi/access_point/content/index.shtml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
<html>
<head>
<title>Pico Access Point</title>
</head>
<body>
<h1>Hello from Pico.</h1>
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Perhaps this ought to say "Hello from Pico W" ? 😉

<p>Led is <!--#led--></p>
<p></p>
<form action="/switch.cgi" method="get">
<button name="switch" value="switch">Turn led <!--#not_led--></button>
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Hmmm, rather than having the switch_cgi_handler simply reading the LED's current state, and then inverting it, I wonder if it might be more idiomatic to do e.g.:

<button name="switch" value="<!--#not_led-->">Turn led <!--#not_led--></button>

and then have the switch_cgi_handler read the value of the switch parameter? (which I guess would also serve as a useful example of how to deal with GET query-parameters 🙂 )

</form>
</body>
</html>
10 changes: 10 additions & 0 deletions pico_w/wifi/access_point/lwipopts.h
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Expand Up @@ -7,4 +7,14 @@
// This example uses a common include to avoid repetition
#include "lwipopts_examples_common.h"

// Enable some httpd features
#define LWIP_HTTPD_CGI 1
#define LWIP_HTTPD_SSI 1
#define LWIP_HTTPD_SSI_MULTIPART 1
#define LWIP_HTTPD_SUPPORT_POST 0
#define LWIP_HTTPD_SSI_INCLUDE_TAG 0

// Generated file containing html data
#define HTTPD_FSDATA_FILE "pico_fsdata.inc"

#endif
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