?電腦端運(yùn)行通訊貓調(diào)試助手,作為服務(wù)端:

電腦端

電腦的IP地址是: 192.168.2.232

手機(jī)與電腦之間的TCP通訊

手機(jī)端運(yùn)行網(wǎng)絡(luò)調(diào)試精靈,作為客戶端:

手機(jī)端

如果從手機(jī)端點(diǎn)擊"發(fā)送"按鈕,則也會(huì)將"ghhh東方紅廣場"幾個(gè)字發(fā)送到電腦上(服務(wù)端).

ESP8266作為客戶端:

// 注意如果是本地設(shè)備作服務(wù)器,則要求TCP Sever 和 ESP8266 都連接到同一個(gè)路由器。

#include <ESP8266WiFi.h>
#define AP_SSID "trdjtxxx"       //所用WiFi的名字
#define AP_PSW  "xh36xxxx"       //所用WiFi的密碼const uint16_t port = 10002;        //Tcp 服務(wù)器的端口
const char * host = "120.76.100.197"; //Tcp 服務(wù)器的ip地址WiFiClient client;                 //創(chuàng)建一個(gè)tcp client連接void setup() {Serial.begin(115200);delay(5000);WiFi.mode(WIFI_STA);              //設(shè)置WiFi 為 Station 模式WiFi.begin(AP_SSID,AP_PSW);       //連接WiFiSerial.println("Connecting to WiFi... ");//等待wifi連接成功while (WiFi.status() != WL_CONNECTED) {Serial.println("Failed!");delay(500);}Serial.println("");Serial.println("Connected");Serial.println("Local IP: ");Serial.println(WiFi.localIP());delay(500);
}void loop() {Serial.println("Connecting to TCP Server :");Serial.println(host);if (!client.connect(host, port)) {Serial.println("Failed");Serial.println("Reconnect in 5 seconds");delay(5000);return;}// 發(fā)送數(shù)據(jù)到 Tcp Server Serial.println("Send The String to TCP Server :\"I am Esp8266\"");client.println(String("I am Esp8266"));//讀取從 Tcp Server 返回的數(shù)據(jù)（以回車符結(jié)尾）String line = client.readStringUntil('\n');Serial.println(line);//3s 后關(guān)閉連接delay(3000);Serial.println("");client.stop();//等待5s，程序循環(huán)運(yùn)行，即5s后從新開始連接Serial.println("wait 5 sec...");delay(5000);
}

120.76.100.197 即:webtcp.tongxinmao.com的IP地址.

ESP8266作為TCP服務(wù)器:

// ESP8266 TCP服務(wù)端程序,同時(shí)也作為一個(gè)WIFI AP
// 注意作為客戶端的電腦或手機(jī)必須先通過WIFI連接到此ESP8200上
// 即和 ESP8266 都連接到同一個(gè)網(wǎng)絡(luò)中。

Arduino 程序代碼:

#include <ESP8266WiFi.h>
#define MAX_SRV_CLIENTS 3    //最大同時(shí)連接數(shù)，即可接入的設(shè)備數(shù)量的最大值，//8266 tcpserver只能接入5個(gè)（此數(shù)據(jù)不確定，網(wǎng)上是這么說的）WiFiServer server(8266);     //端口號(hào)，范圍  0-65535
WiFiClient serverClients[MAX_SRV_CLIENTS];const char WiFiAPPSW[] = "xh36xxxx";    //設(shè)置AP模式下模塊所發(fā)出的WIFI的密碼
char data[1500];
int ind = 0;void setupWiFi()
{WiFi.mode(WIFI_AP);uint8_t mac[WL_MAC_ADDR_LENGTH];WiFi.softAPmacAddress(mac);String macID = String(mac[WL_MAC_ADDR_LENGTH - 3], HEX) +String(mac[WL_MAC_ADDR_LENGTH - 2], HEX) +String(mac[WL_MAC_ADDR_LENGTH - 1], HEX);macID.toUpperCase();//設(shè)置AP模式下的WIFI名稱：12345678_ + MAC地址后六位  String AP_NameString = "12345678" + macID;char AP_NameChar[AP_NameString.length() + 1];memset(AP_NameChar, AP_NameString.length() + 1, 0);for (int i=0; i<AP_NameString.length(); i++)AP_NameChar[i] = AP_NameString.charAt(i);WiFi.softAP(AP_NameChar, WiFiAPPSW);Serial.println();Serial.print ( "IP address: " );Serial.println ( WiFi.softAPIP() );server.begin();}
void setup() 
{Serial.begin(115200);Serial.println ("\nBegin now!!!");setupWiFi();
}void loop() 
{uint8_t i;//檢測服務(wù)器端是否有活動(dòng)的客戶端連接if (server.hasClient()){       for (i = 0; i < MAX_SRV_CLIENTS; i++)//查找空閑或者斷開連接的客戶端，并置為可用{if (!serverClients[i] || !serverClients[i].connected()){if (serverClients[i]) serverClients[i].stop();  //未連接,就釋放serverClients[i] = server.available();          //分配新的//  Serial.print("New client: "); Serial.println(i);continue;} }//若沒有可用客戶端，則停止連接WiFiClient serverClient = server.available();serverClient.stop();}//檢查客戶端的數(shù)據(jù)for (i = 0; i < MAX_SRV_CLIENTS; i++){if (serverClients[i] && serverClients[i].connected()){if (serverClients[i].available()){Serial.println("Connected to client !!! ");//從Telnet客戶端獲取數(shù)據(jù)while (serverClients[i].available()) {data[ind] = serverClients[i].read(); //讀取client端發(fā)送的字符ind++;}for(int j=0;j < ind; j++){Serial.print(data[j]);}Serial.println();ind = 0;serverClients[i].print("OK! Got your request.");        //在client端回復(fù)       }     }}
}

參考:

esp筆記（5）esp8266 與 TCP Sever 建立通訊_esp8266tcp server程序-CSDN博客

【ESP8266】ESP8266作為TCPServer與其他設(shè)備建立一個(gè)TCP網(wǎng)絡(luò)進(jìn)行局域網(wǎng)通訊_多個(gè)esp8266如何組網(wǎng)-CSDN博客