ESP32 wifi WebServer設定
參考原文網址：https://kknews.cc/code/jleplne.html
https://kknews.cc/zh-tw/code/e6v88q4.html
網路資源
ESPAsyncWebServer下載位置
https://github.com/me-no-dev/ESPAsyncWebServer
AsyncTCP下載位置
https://github.com/me-no-dev/AsyncTCP
建立ESP32 WebServer 的網路教學文
https://randomnerdtutorials.com/esp32-dht11-dht22-temperature-humidity-web-server-arduino-ide/
https://randomnerdtutorials.com/esp32-client-server-wi-fi/
(本文為記錄)
//匯入Wifi標頭檔
#include <WiFi.h>
//設置WiFi工作模式，參數可選WIFI_OFF WIFI_STA WIFI_AP WIFI_AP_STA；bool
WiFi.mode(wifi_mode_t)
mode(WIFI_OFF) //關閉
mode(WIFI_AP) //AP模式
mode(WIFI_STA) //Station模式
mode(WIFI_AP_STA) //AP 和 Station模式並存
ESP32 wifi 3種模式
station 模式
soft-AP 模式
station + soft-AP 模式
//將ESP32設定為AP模式，SSID=ESP32_AP，可連4個設備，建立為AP時，默認IP 192.168.4.1
WiFi.softAP("ESP32_AP");
//AP模式使用方法，成功啟動後返回布林值
softAP(const char* ssid, const char* passphrase = NULL, int channel = 1, int ssid_hidden = 0, int max_connection = 4)
//const char* SSID(自訂ESP32網路名稱)，指標類型
//const char* passphrase=NULL (連線密碼，此設定為不用密碼)
//int ssid_hidden=0(是否隱藏SSID名稱，0設定為不隱藏，1設定為隱藏)
//int max_connection=4( 設定最大連接數量，設定為4，ESP32連接裝置有限5以下)
bool softAPConfig(IPAddress local_ip, IPAddress gateway, IPAddress subnet)
設置本地地址、網關地址和子網掩碼，默認分別為192.168.4.1 192.168.4.1 255.255.255.0；
bool softAPdiscon
原文網址：https://kknews.cc/code/jleplne.html
//設定websever port 為80 通訊埠
WifiSever sever(80)
//可自訂義ESP32為靜態IP 後面IP位置可自己設定
IPAddress apIP(192, 168, 1, 100);
//你想要ESP32連線的網絡名稱
const char *ssid = "你的網絡名稱";
//你想要ESP32連線的網絡密碼
const char *password = "網絡密碼";
//開始連接你指定的網路
Wifi.begin(SSID你的網絡名稱, password網絡密碼)
//WIFI連接中，返回值 TRUE
WL_CONNECTED
//設置斷網自動重連接；返回值(true,false)
setAutoReconnect(bool autoReconnect)
//返回是否自動重連接；返回值(true,false)
getAutoReconnect()
//wifi連線狀態
WiFi.status()
//網路連線後，自動產生的動態IP，返回值 為IP位址(IP address)
WiFi.localIP()
//返回MAC地址；(字串String)
uint8_t * macAddress(uint8_t* mac)
macAddress()
//主機名字；返回值const
char * getHostname()
//設置主機名字(自訂主機名字Hostname)
setHostname(const char * hostname)
//聯網狀態，返回值所代表的狀態如下：
wl_status_t status()
255：WL_NO_SHIELD不用在意（兼容WiFi Shield而設計）
0：WL_IDLE_STATUS正在WiFi工作模式間切換；
1：WL_NO_SSID_AVAIL無法訪問設置的SSID網絡；
2：WL_SCAN_COMPLETED掃描完成；
3：WL_CONNECTED連接成功；
4：WL_CONNECT_FAILED連接失敗；
5：WL_CONNECTION_LOST丟失連接；
6：WL_DISCONNECTED斷開連接；
事件列表
SYSTEM_EVENT_WIFI_READY < ESP32 WiFi ready
SYSTEM_EVENT_SCAN_DONE < ESP32 finish scanning AP
SYSTEM_EVENT_STA_START < ESP32 station start
SYSTEM_EVENT_STA_STOP < ESP32 station stop
SYSTEM_EVENT_STA_CONNECTED < ESP32 station connected to AP
SYSTEM_EVENT_STA_DISCONNECTED < ESP32 station disconnected from AP
SYSTEM_EVENT_STA_AUTHMODE_CHANGE < the auth mode of AP connected by ESP32 station changed
SYSTEM_EVENT_STA_GOT_IP < ESP32 station got IP from connected AP
SYSTEM_EVENT_STA_LOST_IP < ESP32 station lost IP and the IP is reset to 0
SYSTEM_EVENT_STA_WPS_ER_SUCCESS < ESP32 station wps succeeds in enrollee mode
SYSTEM_EVENT_STA_WPS_ER_FAILED < ESP32 station wps fails in enrollee mode
SYSTEM_EVENT_STA_WPS_ER_TIMEOUT < ESP32 station wps timeout in enrollee mode
SYSTEM_EVENT_STA_WPS_ER_PIN < ESP32 station wps pin code in enrollee mode
SYSTEM_EVENT_AP_START < ESP32 soft-AP start
SYSTEM_EVENT_AP_STOP < ESP32 soft-AP stop
SYSTEM_EVENT_AP_STACONNECTED < a station connected to ESP32 soft-AP
SYSTEM_EVENT_AP_STADISCONNECTED < a station disconnected from ESP32 soft-AP
SYSTEM_EVENT_AP_PROBEREQRECVED < Receive probe request packet in soft-AP interface
SYSTEM_EVENT_GOT_IP6 < ESP32 station or ap or ethernet interface v6IP addr is preferred
SYSTEM_EVENT_ETH_START < ESP32 ethernet start
SYSTEM_EVENT_ETH_STOP < ESP32 ethernet stop
SYSTEM_EVENT_ETH_CONNECTED < ESP32 ethernet phy link up
SYSTEM_EVENT_ETH_DISCONNECTED < ESP32 ethernet phy link down
SYSTEM_EVENT_ETH_GOT_IP < ESP32 ethernet got IP from connected AP
SYSTEM_EVENT_MAX
//listen for client incoming，在LOOP裡
//隨時等待用戶端發出請求訊息，有就運作
//sever client.avaliable()回返布林值
WiFiClient client=sever client.avaliabe();
//如果client為true，(sever client.avaliable()=true)
//執行大括號裡的程式
if (client){ }
//字串變數，接收紀錄來自client端的請求
//先用空白字串
String currentLine="";
#include <WiFi.h>
const char* ssid = "ssid";
const char* password = "pwd";
WiFiServer server(80);
HardwareSerial myHardwareSerial(1); //ESP32可宣告需要一個硬體序列，軟體序列會出錯
void setup()
{
Serial.begin(115200);
//啟動WIFI
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) //等候連線成功
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");//連線成功
//啟動WEB Server
server.begin();
Serial.println("Server started");
//顯示IP
Serial.print("Use this URL : ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
Serial.println("use 'http://ip/?mp3=x;' to play x'th mp3 file");
//啟動mp3連線
myHardwareSerial.begin(9600, SERIAL_8N1, 12, 13); // Serial的TX,RX
//實際上只用到TX傳送指令，因此RX可不接（接收player狀態）
Serial.println("Initializing DFPlayer ... (May take 1-2 seconds)");
delay(500);
}
void loop()
{
//WIFI指令-------------------
WiFiClient client = server.available();
if (!client) //有人連入才執行
{
return;
}
Serial.println("new client");
delay(100);
//讀取url中的指令
String request = client.readStringUntil('\r');
Serial.println(request);
//-------------------以下為網站內容：HTML語法
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); // do not forget this one
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.print("<h1>Mp3 now is playing: ");
client.print(i_mp3no);
client.print("</h1>");
client.println("</html>");
delay(1);
//-------------------網站內容結束
client.flush();//清除client
Serial.println("Client disconnected");
Serial.println("");
}
WIFI 在AP模式的設定
WiFi.mode(WIFI_AP); //設置工作在AP模式 WiFi.softAPConfig(local_IP, gateway, subnet); //設置AP地址 while(!WiFi.softAP(ssid, password)){}; //啟動AP Serial.println("AP啟動成功"); Serial.print("IP address: "); Serial.println(WiFi.softAPIP()); // 列印IP位址 WiFi.softAPsetHostname("myHostName"); //設置主機名 Serial.print("HostName: "); Serial.println(WiFi.softAPgetHostname()); //列印主機名 Serial.print("mac Address: "); Serial.println(WiFi.softAPmacAddress()); //列印mac地址
原文網址：https://kknews.cc/code/jleplne.html
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