Arduino ESP32SmartConfig配网+NTP时间获取

Posted 2021-12-28 perseverance52

Arduino ESP32SmartConfig配网+NTP时间获取

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• 配网看这篇《Arduino ESP32SmartConfig配网》

本篇的内容是在SmartConfig配网篇的基础上新增的获取NTP时间。

示例代码

#include <WiFi.h>
#include <esp_wifi.h>     //用于esp_wifi_restore() 删除保存的wifi信息

#define LED_BUILTIN  (2)    //板载led灯
#define NTP1  "ntp1.aliyun.com"
#define NTP2  "ntp2.aliyun.com"
#define NTP3  "ntp3.aliyun.com"
const unsigned long interval = 6000UL;//设置更新频率
unsigned long previousMillis = 0;
bool ledState = false;

void SmartConfig()
 
  // WiFi.mode(WIFI_AP_STA);
   WiFi.mode(WIFI_STA);
   Serial.println("\\r\\n wait for smartconfig....");
   WiFi.beginSmartConfig();
     while(1)
   
    Serial.print(".");
    delay(500);
    if ( WiFi.smartConfigDone())
    
      Serial.println("SmartConfig Success");
      Serial.printf("SSID:%s\\r\\n",WiFi.SSID().c_str());
      Serial.printf("PSW:%s\\r\\n",WiFi.psk().c_str());    
      break;      
    
    

bool AutoConfig()

  WiFi.begin();
  for (int i=0; i<20; i++)
  
    int wstatus = WiFi.status();
    if (wstatus == WL_CONNECTED )  
         
          Serial.println("wifi smartConfig success");
          Serial.printf("SSID:%s",WiFi.SSID().c_str());
          Serial.printf(",PWS:%s\\r\\n",WiFi.psk().c_str());
          Serial.print("localIP:");
          Serial.println(WiFi.localIP());
          Serial.print(",GateIP:");
          Serial.println(WiFi.gatewayIP()); 
          esp_wifi_set_storage(WIFI_STORAGE_RAM);//自动保存wifi信息
          WiFi.setAutoConnect(true);  // 设置自动连接      
          return true;
       
       else
       
          Serial.print("WIFI AutoConfig Waiting ....");
          Serial.println(wstatus);
          delay(1000);
          
  
  Serial.println("Wifi autoconfig faild!");
  return false;
  
void setup() 
  Serial.begin(115200);
 pinMode(LED_BUILTIN, OUTPUT);//板载led灯作为指示
 delay(100);
   if (!AutoConfig())
  
   SmartConfig();
    
 configTime(8 * 3600, 0, NTP1, NTP2,NTP3);
 // esp_wifi_restore();  //删除保存的wifi信息
  

 
void loop()   
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) 
     ledState = !ledState;//状态翻转
     digitalWrite(LED_BUILTIN, ledState);
     struct tm timeInfo; //声明一个结构体
  if (!getLocalTime(&timeInfo))
   //一定要加这个条件判断，否则内存溢出
    Serial.println("Failed to obtain time");
  
   Serial.println(&timeInfo, "%F %T %A"); 
        previousMillis = currentMillis;

 

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