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478b5bb6e6
Author | SHA1 | Date |
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Alexander Popov | 478b5bb6e6 | |
Alexander Popov | e67e8c4acc | |
Alexander Popov | 2c0c22538d | |
Alexander Popov | ffd578ad39 |
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## Память
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| Тип | Чтение из программы | Запись из программы | Очистка при перезагрузке |
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|--------|---------------------|---------------------|--------------------------|
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| Flash | Да, PROGMEM | Можно, но сложно | Нет |
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| SRAM | Да | Да | Да |
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| EEPROM | Да | Да | Нет |
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EEPROM представляет собой область памяти, состоящую из элементарных ячеек
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с размером в один байт (как SRAM). Объём EEPROM разный у разных моделей МК:
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* ATmega328 (Arduino UNO, Nano, Pro Mini): `1 кБ`
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* ATmega2560 (Arduino Mega): `4 кБ`
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* ATtiny85 (Digispark): `512 Б`
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* ESP8266 / ESP32: `4096 Б`
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#include <EEPROM.h>
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/**
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* EEPROM.write(адрес, данные) – пишет данные (только byte!) по адресу
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* EEPROM.update(адрес, данные) – обновляет (та же запись, но лучше) байт данных,
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* находящийся по адресу. Не реализована для esp8266/32!
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* EEPROM.read(адрес) – читает и возвращает байт данных, находящийся по адресу
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* EEPROM.put(адрес, данные) – записывает (по факту – обновляет, update) данные любого типа
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* (типа переданной переменной) по адресу
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* EEPROM.get(адрес, данные) – читает данные по адресу
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* и сам записывает их в данные – указанную переменную
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* EEPROM[] – библиотека позволяет работать с EEPROM памятью
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* как с обычным массивом типа byte (uint8_t)
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*/
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void setup() {
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Serial.begin(9600);
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Serial.println(EEPROM.read(10)); // выведет 255
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Serial.println(EEPROM.get(10)); // выведет 255
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Serial.println(EEPROM[10]); // выведет 255
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}
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void loop() {
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//
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}
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void setup() {
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Serial.begin(9600);
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size_t size_variable;
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int example_int;
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unsigned int example_uint;
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signed int example_sint;
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unsigned long example_ulint;
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float example_float;
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double example_double;
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char example_char;
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char * example_string;
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size_variable = sizeof(example_int);
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Serial.print("int bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_uint);
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Serial.print("unsigned int bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_sint);
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Serial.print("signed int bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_ulint);
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Serial.print("unsigned long bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_float);
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Serial.print("float bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_double);
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Serial.print("double bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_char);
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Serial.print("char bytes size: " );
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Serial.println(size_variable);
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size_variable = sizeof(example_string);
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Serial.print("char * bytes size: " );
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Serial.println(size_variable);
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}
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void loop() {
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//
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}
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@ -0,0 +1,2 @@
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[{*.c,*.h}]
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indent_size = unset
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[{*.c,*.h}]
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indent_size = unset
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[{*.c,*.h}]
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indent_size = unset
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// Call C from JavaScript Example
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#include "webui.h"
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void my_function_string(webui_event_t* e) {
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// JavaScript:
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// webui_fn('MyID_One', 'Hello');
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const char* str = webui_get_string(e);
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printf("my_function_string: %s\n", str); // Hello
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// Need Multiple Arguments?
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//
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// WebUI support only one argument. To get multiple arguments
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// you can send a JSON string from JavaScript then decode it.
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// Example:
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//
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// my_json = my_json_decoder(str);
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// foo = my_json[0];
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// bar = my_json[1];
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}
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void my_function_integer(webui_event_t* e) {
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// JavaScript:
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// webui_fn('MyID_Two', 123456789);
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long long number = webui_get_int(e);
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printf("my_function_integer: %lld\n", number); // 123456789
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}
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void my_function_boolean(webui_event_t* e) {
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// JavaScript:
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// webui_fn('MyID_Three', true);
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bool status = webui_get_bool(e); // True
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if(status)
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printf("my_function_boolean: True\n");
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else
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printf("my_function_boolean: False\n");
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}
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void my_function_with_response(webui_event_t* e) {
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// JavaScript:
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// const result = webui_fn('MyID_Four', number);
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long long number = webui_get_int(e);
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number = number * 2;
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printf("my_function_with_response: %lld\n", number);
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// Send back the response to JavaScript
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webui_return_int(e, number);
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}
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int main() {
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// HTML
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const char* my_html =
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"<html>"
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" <head>"
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" <title>Call C from JavaScript Example</title>"
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" <style>"
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" body {"
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" color: white;"
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" background: #0F2027;"
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" text-align: center;"
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" font-size: 16px;"
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" font-family: sans-serif;"
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" }"
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" </style>"
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" </head>"
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" <body>"
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" <h2>WebUI - Call C from JavaScript Example</h2>"
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" <p>Call C function with argument (<em>See the logs in your terminal</em>)</p>"
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" <br>"
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" <button onclick=\"webui_fn('MyID_One', 'Hello');\">Call my_function_string()</button>"
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" <br>"
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" <br>"
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" <button onclick=\"webui_fn('MyID_Two', 123456789);\">Call my_function_integer()</button>"
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" <br>"
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" <br>"
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" <button onclick=\"webui_fn('MyID_Three', true);\">Call my_function_boolean()</button>"
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" <br>"
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" <br>"
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" <p>Call C function and wait for the response</p>"
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" <br>"
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" <button onclick=\"MyJS();\">Call my_function_with_response()</button>"
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" <br>"
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" <br>"
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" <input type=\"text\" id=\"MyInputID\" value=\"2\">"
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" <script>"
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" function MyJS() {"
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" const MyInput = document.getElementById('MyInputID');"
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" const number = MyInput.value;"
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" webui_fn('MyID_Four', number).then((response) => {"
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" MyInput.value = response;"
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" });"
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" }"
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" </script>"
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" <script src=\"/webui.js\"></script>"
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" </body>"
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"</html>";
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// Create a window
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size_t my_window = webui_new_window();
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// Bind HTML elements with C functions
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webui_bind(my_window, "MyID_One", my_function_string);
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webui_bind(my_window, "MyID_Two", my_function_integer);
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webui_bind(my_window, "MyID_Three", my_function_boolean);
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webui_bind(my_window, "MyID_Four", my_function_with_response);
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// Show the window
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webui_show(my_window, my_html); // webui_show_browser(my_window, my_html, Chrome);
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// Wait until all windows get closed
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webui_wait();
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return 0;
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}
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#if defined(_MSC_VER)
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int APIENTRY WinMain(HINSTANCE hInst, HINSTANCE hInstPrev, PSTR cmdline, int cmdshow) {
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return main();
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}
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#endif
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@ -0,0 +1,23 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>ololo</title>
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<script src="/webui.js"></script>
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</head>
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<body>
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<button onclick="abc('string');">ssf</button>
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<br>
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<button id="clck">Click</button>
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<script type="text/javascript">
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window.onload = function () {
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window.resizeTo(500, 500);
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}
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function abc(text) {
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webui_fn('MyID', text).then((response) => { console.log(response); });
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}
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</script>
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</body>
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</html>
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#include <stdio.h>
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#include "webui.h"
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void fn_one(webui_event_t *e) {
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const char *str = webui_get_string(e);
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printf("Data from JavaScript: %s\n", str);
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webui_return_string(e, "Message from C");
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}
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void fn_two(webui_event_t *e) { puts("Click!"); }
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int main() {
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size_t my_window = webui_new_window();
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webui_bind(my_window, "MyID", fn_one);
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webui_bind(my_window, "clck", fn_two);
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webui_show(my_window, "index.html");
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webui_run(my_window, "alert('Fast!');");
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webui_wait();
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return 0;
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}
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import socket
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import os
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# Set the path for the Unix socket
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socket_path = '/tmp/myapp.sock'
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# Create the Unix socket client
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client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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# Connect to the server
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client.connect(socket_path)
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# Send a message to the server
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message = 'Hello from the client!'
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client.sendall(message.encode())
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# Receive a response from the server
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response = client.recv(1024)
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print(f'Received response: {response.decode()}')
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# Close the connection
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client.close()
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@ -0,0 +1,49 @@
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import socket
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import sys
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import os
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import base64
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def prep():
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srv_sock = '/tmp/myapp.sock'
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try:
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os.unlink(srv_sock)
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except:
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if os.path.exists(srv_sock):
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raise
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sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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try:
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print('Setting up server socket on %s\n' % srv_sock)
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sock.bind(srv_sock)
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sock.listen(1)
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print('Success, listening on unix domain socket %s\n' % srv_sock)
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return(sock)
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except Exception as e:
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print(e)
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return False
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def main():
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sock = prep()
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if not sock:
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return False
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while True:
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connection, client_address = sock.accept()
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try:
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buffer = ''
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rcvd_bytes = 0
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while True:
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data = connection.recv(1024)
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rcvd_bytes = rcvd_bytes + len(data)
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if not data:
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print('Finished receiving data\n')
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break
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buffer = buffer + data.decode()
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buffer = buffer[:-1]
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# print(base64.b64encode(buffer.rstrip('\x00')))
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print('Total bytes received bytes: %s\n' % len(buffer))
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finally:
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print('Closing the connection\n')
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connection.close()
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print('Connection closed\n')
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if __name__=="__main__":
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main()
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@ -0,0 +1,9 @@
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import vweb
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struct App {
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vweb.Context
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}
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fn main() {
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vweb.run(&App{}, 8080)
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}
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