diff --git a/.gitignore b/.gitignore
index bc9e916..d9fe7f5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,7 @@ cmake/pico_sdk_import.cmake
# clangd stuff
.cache
compile_commands.json
+
+#kate backups
+*~
+
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 18bf22d..9856d5d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.19)
+cmake_minimum_required(VERSION 3.18)
find_package(Perl)
if(NOT PERL_FOUND)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c44f51a..9864242 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -14,12 +14,13 @@ execute_process(COMMAND
WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
ECHO_OUTPUT_VARIABLE
ECHO_ERROR_VARIABLE
- COMMAND_ERROR_IS_FATAL ANY
)
file(RENAME fsdata.c my_fsdata.c)
add_executable(${PROGRAM_NAME}
main.cpp
+ ssi.cpp
+ cgi.cpp
)
target_compile_definitions(${PROGRAM_NAME} PRIVATE
WIFI_SSID=\"${WIFI_SSID}\"
@@ -37,7 +38,7 @@ target_link_libraries(${PROGRAM_NAME}
)
pico_enable_stdio_usb(${PROGRAM_NAME} TRUE)
-pico_enable_stdio_uart(${PROGRAM_NAME} FALSE)
+pico_enable_stdio_uart(${PROGRAM_NAME} TRUE)
suppress_tinyusb_warnings()
pico_add_extra_outputs(${PROGRAM_NAME})
diff --git a/src/cgi.cpp b/src/cgi.cpp
new file mode 100644
index 0000000..10fb034
--- /dev/null
+++ b/src/cgi.cpp
@@ -0,0 +1,138 @@
+#include "lwip/apps/httpd.h"
+#include "pico/cyw43_arch.h"
+#include "lwipopts.h"
+#include "cgi.h"
+
+
+static const tCGI cgi_handlers[] = {
+ {
+ /* Html request for "/leds.cgi" will start cgi_handler_basic */
+ "/leds.cgi", cgi_handler_basic
+ },
+ {
+ /* Html request for "/leds2.cgi" will start cgi_handler_extended */
+ "/leds_ext.cgi", cgi_handler_extended
+ }
+};
+
+
+
+/* cgi-handler triggered by a request for "/leds.cgi" */
+const char *
+cgi_handler_basic(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
+{
+ int i=0;
+
+ /* We use this handler for one page request only: "/leds.cgi"
+ * and it is at position 0 in the tCGI array (see above).
+ * So iIndex should be 0.
+ */
+ printf("cgi_handler_basic called with index %d\n", iIndex);
+
+ /* All leds off */
+ Led_Off(LED1);
+ Led_Off(LED2);
+ Led_Off(LED3);
+ Led_Off(LED4);
+
+ /* Check the query string.
+ * A request to turn LED2 and LED4 on would look like: "/leds.cgi?led=2&led=4"
+ */
+ for (i = 0; i < iNumParams; i++){
+ /* check if parameter is "led" */
+ if (strcmp(pcParam[i] , "led") == 0){
+ /* look ar argument to find which led to turn on */
+ if(strcmp(pcValue[i], "1") == 0)
+ Led_On(LED1);
+ else if(strcmp(pcValue[i], "2") == 0)
+ Led_On(LED2);
+ else if(strcmp(pcValue[i], "3") == 0)
+ Led_On(LED3);
+ else if(strcmp(pcValue[i], "4") == 0)
+ Led_On(LED4);
+ }
+ }
+
+ /* Our response to the "SUBMIT" is to simply send the same page again*/
+ return "/cgi.html";
+}
+
+/* cgi-handler triggered by a request for "/leds_ext.cgi".
+ *
+ * It is almost identical to cgi_handler_basic().
+ * Both handlers could be easily implemented in one function -
+ * distinguish them by looking at the iIndex parameter.
+ * I left it this way to show how to implement two (or more)
+ * enirely different handlers.
+ */
+const char *
+cgi_handler_extended(int iIndex, int iNumParams, char *pcParam[], char *pcValue[])
+{
+ int i=0;
+
+ /* We use this handler for one page request only: "/leds_ext.cgi"
+ * and it is at position 1 in the tCGI array (see above).
+ * So iIndex should be 1.
+ */
+ printf("cgi_handler_extended called with index %d\n", iIndex);
+
+ /* All leds off */
+ Led_Off(LED1);
+ Led_Off(LED2);
+ Led_Off(LED3);
+ Led_Off(LED4);
+
+ /* Check the query string.
+ * A request to turn LED2 and LED4 on would look like: "/leds.cgi?led=2&led=4"
+ */
+ for (i = 0; i < iNumParams; i++){
+ /* check if parameter is "led" */
+ if (strcmp(pcParam[i] , "led") == 0){
+ /* look ar argument to find which led to turn on */
+ if(strcmp(pcValue[i], "1") == 0)
+ Led_On(LED1);
+ else if(strcmp(pcValue[i], "2") == 0)
+ Led_On(LED2);
+ else if(strcmp(pcValue[i], "3") == 0)
+ Led_On(LED3);
+ else if(strcmp(pcValue[i], "4") == 0)
+ Led_On(LED4);
+ }
+ }
+
+ /* Our response to the "SUBMIT" is to send "/ssi_cgi.shtml".
+ * The extension ".shtml" tells the server to insert some values
+ * which show the user what has been done in response.
+ */
+ return "/ssi_cgi.shtml";
+}
+
+/* initialize the CGI handler */
+void
+cgi_init(void)
+{
+ http_set_cgi_handlers(cgi_handlers, 2);
+
+ for(int i = LED1; i <= LED4; i++){
+ gpio_init(i);
+ gpio_set_dir(i, GPIO_OUT);
+ gpio_put(i, 0);
+ }
+}
+
+/* led control and debugging info */
+void
+Led_On(int led)
+{
+ printf("GPIO%d on\n", led);
+ gpio_put(led, 1);
+}
+
+void
+Led_Off(int led)
+{
+ printf("GPIO%d off\n", led);
+ gpio_put(led, 0);
+}
+
+
diff --git a/src/cgi.h b/src/cgi.h
new file mode 100644
index 0000000..de1f8cf
--- /dev/null
+++ b/src/cgi.h
@@ -0,0 +1,23 @@
+#ifndef __CGI_H__
+#define __CGI_H__
+
+// GPIOs for Leds
+#define LED1 18
+#define LED2 19
+#define LED3 20
+#define LED4 21
+
+/* initialize the CGI handler */
+void cgi_init(void);
+
+/* CGI handler for LED control */
+const char * cgi_handler_basic(int iIndex, int iNumParams, char *pcParam[], char *pcValue[]);
+/* CGI handler for LED control with feedback*/
+const char * cgi_handler_extended(int iIndex, int iNumParams, char *pcParam[], char *pcValue[]);
+
+
+/* led control and debugging info */
+void Led_On(int led);
+void Led_Off(int led);
+
+#endif // __CGI_H__
diff --git a/src/fs/cgi.html b/src/fs/cgi.html
new file mode 100644
index 0000000..ef3c8a4
--- /dev/null
+++ b/src/fs/cgi.html
@@ -0,0 +1,25 @@
+
+
+ Pico W CGI-PAGE
+ Pico W
+ CGI-PAGE
+
+
+ This page allows you to control four leds: LED1, LED2, LED3 and LED4 connected to GPIO18 - 21
+ To turn a led on/off check/uncheck its corresponding checkbox.
+ Then click on the "Send" button to submit the changes.
+
+
+
+
+
+ Back
+
+
diff --git a/src/fs/index.html b/src/fs/index.html
index 84671f9..054cc2c 100644
--- a/src/fs/index.html
+++ b/src/fs/index.html
@@ -3,5 +3,11 @@
Pico W
Pico W
Hello World
-
-