70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
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* This example shows how to use WebSerial variant to send data to the browser when timing, speed and latency are important.
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* WebSerial focuses on reducing latency and increasing speed by enqueueing messages and sending them in a single packet.
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*
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* The responsibility is left to the caller to ensure that the messages sent are not too large or not too small and frequent.
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* For example, use of printf(), write(c), print(c), etc are not recommended.
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*
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* This variant can allow WebSerial to support a high speed of more than 20 messages per second like in this example.
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*
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* It can be used to log data, debug, or send data to the browser in real-time without any delay.
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*
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* You might want to look at the Logging variant to see how to better use WebSerial for streaming logging.
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*
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* You might want to control these flags to control the async library performance:
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* -D CONFIG_ASYNC_TCP_QUEUE_SIZE=128
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* -D CONFIG_ASYNC_TCP_RUNNING_CORE=1
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* -D WS_MAX_QUEUED_MESSAGES=128
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*/
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#include <Arduino.h>
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#if defined(ESP8266)
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#include <ESP8266WiFi.h>
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#include <ESPAsyncTCP.h>
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#elif defined(ESP32)
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#include <AsyncTCP.h>
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#include <WiFi.h>
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#endif
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#include <DNSServer.h>
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#include <ESPAsyncWebServer.h>
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#include <WString.h>
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#include <MycilaWebSerial.h>
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AsyncWebServer server(80);
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static const char* dict = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890";
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static uint32_t last = millis();
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static uint32_t count = 0;
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void setup() {
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Serial.begin(115200);
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WiFi.softAP("WSLDemo");
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Serial.print("IP Address: ");
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Serial.println(WiFi.softAPIP().toString());
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WebSerial.onMessage([](const String& msg) { Serial.println(msg); });
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WebSerial.begin(&server);
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server.onNotFound([](AsyncWebServerRequest* request) { request->redirect("/webserial"); });
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server.begin();
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}
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void loop() {
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if (millis() - last > 50) {
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count++;
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long r = random(10, 250) + 15;
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String buffer;
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buffer.reserve(r);
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buffer += count;
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while (buffer.length() < 10) {
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buffer += " ";
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}
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buffer += "";
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for (int i = 0; i < r; i++) {
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buffer += dict[random(0, 62)];
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}
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WebSerial.print(buffer);
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last = millis();
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}
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}
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