ESP8266 (Arduino) 之 WIFI Scan(扫描wifi)

拼搏现实的明天。 2022-08-29 04:21 405阅读 0赞

wifi模块，既可以连接别人的wifi，也可以让别的人通过wifi访问自己。

所以是可以扫描周围都有啥wifi名称的

代码如下，也可以直接从Arduino打开 ，如下

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tlc3NoZWk_size_16_color_FFFFFF_t_70][]

#include "ESP8266WiFi.h"
    
    void setup() {
      Serial.begin(115200);
    
      // Set WiFi to station mode and disconnect from an AP if it was previously connected
      WiFi.mode(WIFI_STA);
      WiFi.disconnect();
      delay(100);
    
      Serial.println("Setup done");
    }
    
    void loop() {
      Serial.println("scan start");
    
      // WiFi.scanNetworks will return the number of networks found
      int n = WiFi.scanNetworks();
      Serial.println("scan done");
      if (n == 0) {
        Serial.println("no networks found");
      } else {
        Serial.print(n);
        Serial.println(" networks found");
        for (int i = 0; i < n; ++i) {
          // Print SSID and RSSI for each network found
          Serial.print(i + 1);
          Serial.print(": ");
          Serial.print(WiFi.SSID(i));
          Serial.print(" (");
          Serial.print(WiFi.RSSI(i));
          Serial.print(")");
          Serial.println((WiFi.encryptionType(i) == ENC_TYPE_NONE) ? " " : "*");
          delay(10);
        }
      }
      Serial.println("");
    
      // Wait a bit before scanning again
      delay(5000);
    }

编译，下载后

打开串口监控

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tlc3NoZWk_size_16_color_FFFFFF_t_70 1][]

可以看到 扫描到了17个 wifi

还是很不错的。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tlc3NoZWk_size_16_color_FFFFFF_t_70]: /images/20220829/0a4e8400bbf84909a2d52989d96ffbac.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tlc3NoZWk_size_16_color_FFFFFF_t_70 1]: /images/20220829/bda6b2a8d0484884856a6bbdbb13ab9a.png