也许是一个非常非常愚蠢的问题，但是我的c ++技能是0。...
我的情况：
首先，Sensor和Relay值通过http.GET（）发送到服务器。 这些值通过PHP保存在mysql数据库中。 很好。
第二，通过AJAX / JQUERY发出的请求从wemos读取时间，游乐设施等数据。 继承人的问题。 会有很大的延迟（〜30秒）。
我认为这是由于delay（30000）; （第一）
那么我该怎么做，将其中的2个进程拆分为ajax请求，没有太大的延迟？ 我不知道ajax不好-它在草图中的延迟
在这里输入我的代码：
//A lot of this code have been resued from the example on the ESP8266 Learning Webpage below.
//http://www.esp8266learning.com/wemos-webserver-example.php
//CODE START
//1
#include <ESP8266WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <ArduinoJson.h>
#include <Time.h>
#include <TimeAlarms.h>
#include <ESP8266HTTPClient.h>
#include "DHT.h"
long Day2=0;
int Hour2 =0;
int Minute2=0;
int Second2=0;
int HighMillis2=0;
int Rollover2=0;
// Below you will need to use your own WIFI informaiton.
//2
const char* ssid = "xxxxxxxxxxxxxxxxxxx"; //WIFI Name, WeMo will only connect to a 2.4GHz network.
const char* password = "xxxxxxxxxxxxxxx"; //WIFI Password
//defining the pin and setting up the "server"
//3
#define DHTTYPE DHT21 // DHT 11
int relayPin = D1; // The Shield uses pin 1 for the relay
WiFiServer server(80);
IPAddress ip(192, 168, 1, 94); // where xx is the desired IP Address
IPAddress gateway(192, 168, 1, 1); // set gateway to match your network
IPAddress subnet(255, 255, 255, 0); // set subnet mask to match your network
// DHT Sensor
const int DHTPin = 4;
// Initialize DHT sensor.
DHT dht(DHTPin, DHTTYPE);
// Temporary variables
static char celsiusTemp[7];
static char fahrenheitTemp[7];
static char humidityTemp[7];
// void setup is where we initialize variables, pin modes, start using libraries, etc.
//The setup function will only run once, after each powerup or reset of the wemos board.
//4
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "192.168.1.1:1233", 3600, 60000);
void setup() {
Serial.begin(115200);
delay(10);
dht.begin();
pinMode(relayPin, OUTPUT);
digitalWrite(relayPin, LOW);
Serial.print(F("Setting static ip to : "));
Serial.println(ip);
// Connect to WiFi network
//5
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.config(ip, gateway, subnet);
WiFi.begin(ssid, password);
//Trying to connect it will display dots
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print("-");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.print("Use this URL : ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
timeClient.begin();
timeClient.update();
setTime(timeClient.getHours(),timeClient.getMinutes(),timeClient.getSeconds(),1,1,11); // set time to Saturday 8:29:00am Jan 1 2011
//Serial.print(timeClient.getFormattedTime());
//Serial.print("^^^^");
// create the alarms
Alarm.alarmRepeat(8,0,0, TurnLightOn); // 8:30am every day
Alarm.alarmRepeat(20,0,0, TurnLightOff); // 8:30am every day
}
//void loop is where you put all your code. it is a funtion that returns nothing and will repeat over and over again
//6
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
//Serial.print(client);
if (!client) {
Serial.println("-------------KEIN CLIENT AUTOMATISCH ----------------------");
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)
float f = dht.readTemperature(true);
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t) || isnan(f)) {
Serial.println("Failed to read from DHT sensor!");
strcpy(celsiusTemp,"Failed");
strcpy(fahrenheitTemp, "Failed");
strcpy(humidityTemp, "Failed");
} else{
// Computes temperature values in Celsius + Fahrenheit and Humidity
//send sensor data to server
HTTPClient http; //Declare object of class HTTPClient
//GET Data
String Link;
String GetURL;
int RelayLightStatus = digitalRead (5);
GetURL += F("http://192.168.1.1:8082/controlcenter/api.php?name=wemosd1mini%&do=updateepsvalue");
GetURL += F("&temp=");
GetURL += String(t, 2);
GetURL += F("&rlf=");
GetURL += String(h, 2);
GetURL += F("&relaylightstatus=");
GetURL += String(RelayLightStatus);
Serial.println(GetURL);
http.begin(GetURL); //Specify request destination
http.addHeader("Content-Type", "text/plain"); //Specify content-type header
int httpCode = http.GET(); //Send the request
String payload = http.getString(); //Get the response payload
Serial.println(httpCode); //Print HTTP return code
//Serial.println(payload); //Print request response payload
http.end(); //Close connection
//ZSU FUnktion
String currenttime;
currenttime = timeClient.getFormattedTime();
Serial.println(currenttime);
uptime(); //Runs the uptime script located below the main loop and reenters the main loop
//print_Uptime();
delay(30000); //GET Data at every 5 seconds
Alarm.delay(1000); // wait one second between clock display
}
Serial.println("-------------KEIN CLIENT AUTOMATISCH ENDE----------------------");
} else {
Serial.println("------------- CLIENT AUTOMATISCH ----------------------");
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: application/json");
client.println("Access-Control-Allow-Origin: *");
client.println("");
// Return the response, build the html page
if (request.indexOf("/sysinfo") != -1) {
String freemem;
String output;
freemem = ESP.getFreeHeap();
StaticJsonBuffer<300> JSONbuffer;
JsonObject& JSONencoder = JSONbuffer.createObject();
JSONencoder["freemem"] = freemem;
//JsonArray& values = JSONencoder.createNestedArray("values");
//values.add(freemem);
JSONencoder["uptimed"] = Day2;
JSONencoder["uptimeh"] = Hour2;
JSONencoder["uptimem"] = Minute2;
JSONencoder["uptimes"] = Second2;
JSONencoder["systime"] = timeClient.getFormattedTime();
JSONencoder["hostname"] = String(WiFi.hostname());
JSONencoder["dsdd"] = String(WiFi.localIP());
JSONencoder["ssid"] = String(ssid);
JSONencoder["wifistatus"] = String(WiFi.status());
Serial.println(ESP.getResetInfo());
JSONencoder.printTo(client);
client.println();
}
if (request.indexOf("/switchRelay") != -1 or request.indexOf("/switchRelayrelayrelayLight=OFF") != -1 or request.indexOf("/switchRelayrelayrelayLight=OFF") != -1) {
//Match the request, checking to see what the currect state is
int value = LOW;
if (request.indexOf("/switchRelayrelayrelayLight=ON") != -1) {
digitalWrite(D1, HIGH);
client.print("{\"status\": {\"state\": \"ok\"}}");
value = HIGH;
}
if (request.indexOf("/switchRelayrelayrelayLight=OFF") != -1){
digitalWrite(D1, LOW);
client.print("{\"status\": {\"state\": \"ok\"}}");
value = LOW;
}
}
delay(1);
Serial.println("Client disconnected");
Serial.println("");
client.setNoDelay(true);
Serial.println("------------- CLIENT END ----------------------");
}
//CLOCK
}//END
void TurnLightOn(){
Serial.println("Turn light on");
digitalWrite(D1, HIGH);
HTTPClient http1;
String GetURL1;
GetURL1 += F("http://192.168.1.1:8082/controlcenter/api.php?do=addRun&task=2&value=on&trigger=auto");
http1.begin(GetURL1); //Specify request destination
http1.addHeader("Content-Type", "text/plain"); //Specify content-type header
int httpCode1 = http1.GET(); //Send the request
String payload1 = http1.getString(); //Get the response payload
//Serial.println(httpCode); //Print HTTP return code
//Serial.println(payload); //Print request response payload
http1.end(); //Close connection
}
void TurnLightOff(){
Serial.println("Turn light off");
digitalWrite(D1, LOW);
HTTPClient http1;
String GetURL1;
GetURL1 += F("http://192.168.1.1:8082/controlcenter/api.php?do=addRun&task=2&value=off&trigger=auto");
http1.begin(GetURL1); //Specify request destination
http1.addHeader("Content-Type", "text/plain"); //Specify content-type header
int httpCode1 = http1.GET(); //Send the request
String payload1 = http1.getString(); //Get the response payload
//Serial.println(httpCode); //Print HTTP return code
//Serial.println(payload); //Print request response payload
http1.end(); //Close connection
}
void uptime(){
//** Making Note of an expected rollover *****//
if(millis()>=3000000000){
HighMillis2=1;
}
//** Making note of actual rollover **//
if(millis()<=100000&&HighMillis2==1){
Rollover2++;
HighMillis2=0;
}
long secsUp = millis()/1000;
Second2 = secsUp%60;
Minute2 = (secsUp/60)%60;
Hour2 = (secsUp/(60*60))%24;
Day2 = (Rollover2*50)+(secsUp/(60*60*24)); //First portion takes care of a rollover [around 50 days]
};