ESP32: website Buttons um-designen
hallo,
ich versuche gerade ein webserver-html-example für meine Zecke umzudesignen, kann aber leider kein html...
Der Beispielcode funktioniert, aber ich möchte nicht pro LED je 1 Button, der wechselweise eine LED an- oder ausschaltet,
sondern jeweils 2 getrennte Buttons pro LED nebeneinander, je einer für an und einer für aus.
Auch soll sich nicht mehr die Farbe des Buttons je nach led-status ändern (der aktuelle LED-Zustand wird ja oberhalb des betr. Buttons angezeigt).
Wer kann mir das bitte umschreiben?
Funktion String SendHTML(uint8_t led1stat,uint8_t led2stat){} ab Codezeile 208
Code:
//----------------------------------------------------------
String SendHTML(uint8_t led1stat,uint8_t led2stat){
String ptr = "<!DOCTYPE html> <html>\n";
ptr +="<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\">\n";
ptr +="<title>LED Control</title>\n";
ptr +="<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n";
ptr +="body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;} h3 {color: #444444;margin-bottom: 50px;}\n";
ptr +=".button {display: block;width: 80px;background-color: #3498db;border: none;color: white;padding: 13px 30px;text-decoration: none;font-size: 25px;margin: 0px auto 35px;cursor: pointer;border-radius: 4px;}\n";
ptr +=".button-on {background-color: #3498db;}\n";
ptr +=".button-on:active {background-color: #2980b9;}\n";
ptr +=".button-off {background-color: #34495e;}\n";
ptr +=".button-off:active {background-color: #2c3e50;}\n";
ptr +="p {font-size: 14px;color: #888;margin-bottom: 10px;}\n";
ptr +="</style>\n";
ptr +="</head>\n";
ptr +="<body>\n";
ptr +="<h1>ESP32 Web Server</h1>\n";
ptr +="<h3>Using Station(STA) Mode</h3>\n";
if(led1stat)
{ptr +="<p>LED1 Status: ON</p><a class=\"button button-off\" href=\"/led1off\">OFF</a>\n";}
else
{ptr +="<p>LED1 Status: OFF</p><a class=\"button button-on\" href=\"/led1on\">ON</a>\n";}
if(led2stat)
{ptr +="<p>LED2 Status: ON</p><a class=\"button button-off\" href=\"/led2off\">OFF</a>\n";}
else
{ptr +="<p>LED2 Status: OFF</p><a class=\"button button-on\" href=\"/led2on\">ON</a>\n";}
ptr +="</body>\n";
ptr +="</html>\n";
return ptr;
}
Komplettcode von der ESP32 github repo (library examples):
Code:
// Create A Simple ESP32 Web Server In Arduino IDE
// https://lastminuteengineers.com/creating-esp32-web-server-arduino-ide/
#include <WiFi.h>
#include <WiFiClient.h>
#include <ESPmDNS.h>
#include <ArduinoOTA.h>
#include <WebServer.h>
#include <WiFiServer.h>
/*Put your SSID & Password*/
const char* ssid = "WLAN"; // Enter SSID here
const char* password = "1865844"; //Enter Password here
char www_username[64] = "admin";
char www_password[64] = "esp32";
#define this_ip_4 202 // <<< static webserver ip (4th byte)
IPAddress this_ip(192, 168, 2, this_ip_4); // <<< static local IP of this ESP-webserver
IPAddress gateway(192, 168, 2, 1); // <<< LAN Gateway IP
IPAddress subnet(255, 255, 255, 0); // <<< LAN Subnet Mask
#define wwwport 8008
#define lanport 8081
WebServer webserver(wwwport); // router http port www
WiFiServer wifiserver(lanport); // router wifi port lan
// allows you to set the realm of authentication Default:"Login Required"
const char* www_realm = "Custom Auth Realm";
// the Content of the HTML response in case of Unautherized Access Default:empty
String authFailResponse = "Authentication Failed";
uint8_t LED1pin = LED_BUILTIN;
bool LED1status = LOW;
uint8_t LED2pin = 12;
bool LED2status = LOW;
//----------------------------------------------------------
void handleNotFound() {
String message = "File Not Found\n\n";
message += "URI: ";
message += webserver.uri();
message += "\nMethod: ";
message += (webserver.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += webserver.args();
message += "\n";
for (uint8_t i = 0; i < webserver.args(); i++) {
message += " " + webserver.argName(i) + ": " + webserver.arg(i) + "\n";
}
webserver.send(404, "text/plain", message);
}
//----------------------------------------------------------
void setup() {
Serial.begin(115200);
delay(1000);
pinMode(LED1pin, OUTPUT);
pinMode(LED2pin, OUTPUT);
Serial.println("Connecting to ");
Serial.println(ssid);
//connect to your local wi-fi network
WiFi.begin(ssid, password);
WiFi.config(this_ip, gateway, subnet); // static IP
//check wi-fi is connected to wi-fi network
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected..!");
Serial.print("Got IP: "); Serial.println(WiFi.localIP());
ArduinoOTA.begin();
webserver.on("/", []() {
if (!webserver.authenticate(www_username, www_password))
//Basic Auth Method with Custom realm and Failure Response
//return webserver.requestAuthentication(BASIC_AUTH, www_realm, authFailResponse);
//Digest Auth Method with realm="Login Required" and empty Failure Response
//return webserver.requestAuthentication(DIGEST_AUTH);
//Digest Auth Method with Custom realm and empty Failure Response
//return webserver.requestAuthentication(DIGEST_AUTH, www_realm);
//Digest Auth Method with Custom realm and Failure Response
{
return webserver.requestAuthentication(DIGEST_AUTH, www_realm, authFailResponse);
}
handle_OnConnect();
});
/*
webserver.on("/inline", []() {
webserver.send(200, "text/plain", "this works as well");
});
*/
webserver.on("/led1on", handle_led1on);
webserver.on("/led1off", handle_led1off);
webserver.on("/led2on", handle_led2on);
webserver.on("/led2off", handle_led2off);
webserver.onNotFound(handle_NotFound);
webserver.begin();
Serial.println("HTTP webserver started");
}
//----------------------------------------------------------
void loop() {
ArduinoOTA.handle();
webserver.handleClient();
if(LED1status)
{digitalWrite(LED1pin, HIGH);}
else
{digitalWrite(LED1pin, LOW);}
if(LED2status)
{digitalWrite(LED2pin, HIGH);}
else
{digitalWrite(LED2pin, LOW);}
}
//----------------------------------------------------------
void handle_OnConnect() {
LED1status = LOW;
LED2status = LOW;
Serial.println("GPIO13 Status: OFF | GPIO12 Status: OFF");
webserver.send(200, "text/html", SendHTML(LED1status,LED2status));
}
//----------------------------------------------------------
void handle_led1on() {
LED1status = HIGH;
Serial.println("GPIO13 Status: ON");
webserver.send(200, "text/html", SendHTML(true,LED2status));
}
//----------------------------------------------------------
void handle_led1off() {
LED1status = LOW;
Serial.println("GPIO13 Status: OFF");
webserver.send(200, "text/html", SendHTML(false,LED2status));
}
//----------------------------------------------------------
void handle_led2on() {
LED2status = HIGH;
Serial.println("GPIO12 Status: ON");
webserver.send(200, "text/html", SendHTML(LED1status,true));
}
//----------------------------------------------------------
void handle_led2off() {
LED2status = LOW;
Serial.println("GPIO12 Status: OFF");
webserver.send(200, "text/html", SendHTML(LED1status,false));
}
//----------------------------------------------------------
void handle_NotFound(){
String message = "File Not Found\n\n";
message += "URI: ";
message += webserver.uri();
message += "\nMethod: ";
message += (webserver.method() == HTTP_GET) ? "GET" : "POST";
message += "\nArguments: ";
message += webserver.args();
message += "\n";
for (uint8_t i = 0; i < webserver.args(); i++) {
message += " " + webserver.argName(i) + ": " + webserver.arg(i) + "\n";
}
webserver.send(404, "text/plain", message);
//webserver.send(404, "text/plain", "Not found");
}
//----------------------------------------------------------
String SendHTML(uint8_t led1stat,uint8_t led2stat){
String ptr = "<!DOCTYPE html> <html>\n";
ptr +="<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\">\n";
ptr +="<title>LED Control</title>\n";
ptr +="<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n";
ptr +="body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;} h3 {color: #444444;margin-bottom: 50px;}\n";
ptr +=".button {display: block;width: 80px;background-color: #3498db;border: none;color: white;padding: 13px 30px;text-decoration: none;font-size: 25px;margin: 0px auto 35px;cursor: pointer;border-radius: 4px;}\n";
ptr +=".button-on {background-color: #3498db;}\n";
ptr +=".button-on:active {background-color: #2980b9;}\n";
ptr +=".button-off {background-color: #34495e;}\n";
ptr +=".button-off:active {background-color: #2c3e50;}\n";
ptr +="p {font-size: 14px;color: #888;margin-bottom: 10px;}\n";
ptr +="</style>\n";
ptr +="</head>\n";
ptr +="<body>\n";
ptr +="<h1>ESP32 Web Server</h1>\n";
ptr +="<h3>Using Station(STA) Mode</h3>\n";
if(led1stat)
{ptr +="<p>LED1 Status: ON</p><a class=\"button button-off\" href=\"/led1off\">OFF</a>\n";}
else
{ptr +="<p>LED1 Status: OFF</p><a class=\"button button-on\" href=\"/led1on\">ON</a>\n";}
if(led2stat)
{ptr +="<p>LED2 Status: ON</p><a class=\"button button-off\" href=\"/led2off\">OFF</a>\n";}
else
{ptr +="<p>LED2 Status: OFF</p><a class=\"button button-on\" href=\"/led2on\">ON</a>\n";}
ptr +="</body>\n";
ptr +="</html>\n";
return ptr;
}
PS,
den Farbwechsel zumindest kann man durch auskommentieren der 4 Zeilen verhindern:
/*
ptr +=".button-on {background-color: #3498db;}\n";
ptr +=".button-on:active {background-color: #2980b9;}\n";
ptr +=".button-off {background-color: #34495e;}\n";
ptr +=".button-off:active {background-color: #2c3e50;}\n";
Jetzt braucht man nur noch 2 getrennte on/off Buttons pro LED
*/
