ESP8266代碼無法正常工作

這是打開/關閉LED的ESP8266代碼。我正在使用Arduino IDE內置的示例代碼。該LED工作正常，但我想發送HTTP請求到我本地託管的網站（發送電子郵件），但它不起作用。ESP8266代碼無法正常工作

跟我的本地WiFi
分配一個靜態IP
當我打192.168.1.101/gpio/1(Led ON）
當我打192.168.1.101/gpio/0(Led關）它的工作，但無法打我的網站。
當我打192.168.1.101/gpio/1那麼就應該打我的本地託管的URL（192.168.1.100/home/ardchk）

請幫助我理清這個問題。

#include <ESP8266WiFi.h> 

const char* ssid = "SMART"; 
const char* password = "123456789"; 
const char* host = "192.168.1.100"; // Your domain 
IPAddress ip(192, 168, 1, 101); // 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); 
WiFiServer server(80); 

void setup() { 
    Serial.begin(115200); 
    delay(10); 
    // prepare GPIO3 
    pinMode(3, OUTPUT); 
    digitalWrite(3, 0); 
    // Connect to WiFi network 
    Serial.println(); 
    Serial.println(); 
    Serial.print("Connecting to "); 
    Serial.println(ssid); 
    WiFi.config(ip,gateway,subnet); 
    WiFi.begin(ssid, password); 
    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.println(WiFi.localIP()); 
} 

void loop() { 
    // Check if a client has connected 
    WiFiClient client = server.available(); 
    if (!client) { 
    return; 
    } 
    // Wait until the client sends some data 
    Serial.println("new client"); 
    while(!client.available()) { 
    delay(1); 
    } 
    // Read the first line of the request 
    String req = client.readStringUntil('\r'); 
    Serial.println(req); 
    // Match the request 
    int val; 
    if (req.indexOf("/gpio/0") != -1) { 
    val = 0; 
    if (client.connect(host, 80)) { 
     //starts client connection, checks for connection 
     Serial.println("connected to website/server"); 
     client.println("GET /home/ardchk HTTP/1.1"); //Send data 
     client.println("Host: 192.168.1.100"); 
     Serial.println("Email Sended"); 
     client.println("Connection: close"); 
     //close 1.1 persistent connection 
     client.println(); //end of get request 
    } 
    } else if (req.indexOf("/gpio/1") != -1) { 
    val = 1; 
    } else { 
    Serial.println("invalid request"); 
    client.stop(); 
    return; 
    } 
    // Set GPIO2 according to the request 
    digitalWrite(3, val); 
    client.flush(); 
    // Prepare the response 
    String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now "; 
    s += (val)?"high":"low"; 
    s += "</html>\n"; 
    // Send the response to the client 
    client.print(s); 
    delay(1); 
    Serial.println("Client disconnected"); 
    // The client will actually be disconnected 
    // when the function returns and 'client' object is destroyed 
}

來源

2017-09-01 MR Legend

請解釋當您嘗試點擊網址時會發生什麼。「不工作」不清楚 – Billa

您需要學會拼寫（隨機大寫字母不會被視爲正確的拼寫），並正確縮進您的代碼。幸運的是，Arduino IDE爲您做到了這一點：按下ctrl-T ... – dda

代碼塊：if（client.connect（host，80）） {此代碼未運行，因爲未與主機連接}甚至網站託管於同一網絡 –

根據您的問題/評論，我假設client.connect(host, 80)返回false。

我相信你無法連接到你的host，因爲你正在嘗試連接兩次相同的client。

你的代碼如下所示：

// returns an already connected client, if available 
WiFiClient client = server.available() 

//... 

if (client.connect(host, 80)) {/*...*/}

你看，你正在使用的已經連接客戶端嘗試連接到主機。相反，嘗試創建該作業單獨WiFiClient：

WiFiClient requesting_client = server.available(); 
//... 
if (req.indexOf("/gpio/0") != -1) { 
    val = 0; 
    // create a fresh, new client 
    WiFiClient emailing_client; 
    if (emailing_client.connect(host, 80)) { 
    // ... 
    // don't forget that you need to close this client as well! 
    emailing_client.stop(); 
    }

希望這有助於！

來源

2017-09-05 14:01:35 ContinuousLoad

ESP8266代碼無法正常工作

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