[esp8266 arduino]nodemcu wifi code

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nodemcu wifi code

nodemcu esp8266有三种wifi模式:WIFI_AP, WIFI_STA,WIFI_AP_STA
通过修改WIFI.mode(WIFI_STA)来设置

WIFI_AP, WIFI_STA, WIFI_AP_STA or WIFI_OFF

1. #include <Arduino.h>
   
2. #include <ESP8266WiFi.h>
   
3. #include <WiFiClient.h>
   
4. #include <ESP8266WebServer.h>
   
5. // ********** set wifi and bit rate ***************
   
6. const char* ssid = "xxxxx"; //wifi SSID which you want to join
   
7. const char* password = "xxxx"; //wifi password
   
8. void light (int delaySecond){
   
9.     delay ( delaySecond * 1000);
   
10.   }
    
11. void setup() {
    
12.     // put your setup code here, to run once:
    
13.     Serial.begin(921600);  //default bit rate
    
14.     WiFi.mode(WIFI_STA); //set to STA mode
    
15.     WiFi.begin(ssid, password); //connect to WiFi
    
16.     Serial.println("ESP8266 module start!");
    
17.     Serial.print("ESP8266 MAC: "); //show nodemcu mac address before connect to wifi. as some network env bond mac address
    
18.     Serial.println(WiFi.macAddress()); //show nodemcu mac address
    
19.     // Wait for connection
    
20.     while (WiFi.status() != WL_CONNECTED) {
    
21.     delay(500);
    
22.     Serial.print(".");
    
23.   }
    
24.     // show info after connected!
    
25.     Serial.println("");
    
26.     Serial.print("Connected to ");
    
27.     Serial.println(ssid);
    
28.     Serial.print("IP address: ");
    
29.     Serial.println(WiFi.localIP()); //show nodemcu ip address

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