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36f903443b
* Add const char* content to ESP8266WebSerer::send() Supercedes #3492 Allow sending raw binary data or strings directly without conversion to a String to reduce memory overhead when possible. From original @timw1971 PR #3492 Added public functions to allow content to be uploaded using const char*. For some cases, this can remove the need for content to be copied into a String, and thus can be considerably more space-efficient. * Fix example formatting * Make GIF example use static const array * Make the example really need to use const char* Make the generated GIF dynamic in the example and move the original to PROGMEM (since that's where const arrays like this belong).
97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
#include <ESP8266WiFi.h>
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#include <WiFiClient.h>
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#include <ESP8266WebServer.h>
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#include <ESP8266mDNS.h>
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#ifndef STASSID
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#define STASSID "your-ssid"
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#define STAPSK "your-password"
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#endif
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const char* ssid = STASSID;
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const char* password = STAPSK;
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ESP8266WebServer server(80);
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const int led = 13;
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void handleRoot() {
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digitalWrite(led, 1);
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server.send(200, "text/plain", "hello from esp8266!");
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digitalWrite(led, 0);
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}
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void handleNotFound() {
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digitalWrite(led, 1);
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String message = "File Not Found\n\n";
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message += "URI: ";
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message += server.uri();
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message += "\nMethod: ";
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message += (server.method() == HTTP_GET) ? "GET" : "POST";
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message += "\nArguments: ";
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message += server.args();
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message += "\n";
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for (uint8_t i = 0; i < server.args(); i++) {
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message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
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}
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server.send(404, "text/plain", message);
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digitalWrite(led, 0);
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}
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void setup(void) {
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pinMode(led, OUTPUT);
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digitalWrite(led, 0);
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Serial.begin(115200);
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid, password);
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Serial.println("");
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// Wait for connection
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.print("Connected to ");
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Serial.println(ssid);
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Serial.print("IP address: ");
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Serial.println(WiFi.localIP());
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if (MDNS.begin("esp8266")) {
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Serial.println("MDNS responder started");
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}
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server.on("/", handleRoot);
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server.on("/inline", []() {
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server.send(200, "text/plain", "this works as well");
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});
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server.on("/gif", []() {
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static const uint8_t gif[] PROGMEM = {
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0x47, 0x49, 0x46, 0x38, 0x37, 0x61, 0x10, 0x00, 0x10, 0x00, 0x80, 0x01,
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0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x2c, 0x00, 0x00, 0x00, 0x00,
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0x10, 0x00, 0x10, 0x00, 0x00, 0x02, 0x19, 0x8c, 0x8f, 0xa9, 0xcb, 0x9d,
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0x00, 0x5f, 0x74, 0xb4, 0x56, 0xb0, 0xb0, 0xd2, 0xf2, 0x35, 0x1e, 0x4c,
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0x0c, 0x24, 0x5a, 0xe6, 0x89, 0xa6, 0x4d, 0x01, 0x00, 0x3b
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};
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char gif_colored[sizeof(gif)];
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memcpy_P(gif_colored, gif, sizeof(gif));
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// Set the background to a random set of colors
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gif_colored[16] = millis() % 256;
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gif_colored[17] = millis() % 256;
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gif_colored[18] = millis() % 256;
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server.send(200, "image/gif", gif_colored, sizeof(gif_colored));
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});
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server.onNotFound(handleNotFound);
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server.begin();
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Serial.println("HTTP server started");
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}
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void loop(void) {
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server.handleClient();
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MDNS.update();
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}
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