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我正在使用ESP8266-12 WiFi模塊訪問我的家庭無線網絡來控制燈。爲了上傳新固件（OTA：Over the Air）更新，我想使用ESP8266的熱點AccessPoint，因爲更改我的wifi網絡密碼後，我無法做到這一點。這是我的Arduino代碼：如何切換到正常的WiFi模式，以接入點模式ESP8266
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <ArduinoOTA.h>
#include <ESP8266WebServer.h>
//ssid and password of your wifi network
const char* ssid = "wifi_ssid";
const char* password = "wifi_password";
//ssid and password to connect to local hotspot of ESP8266
const char *esp_ssid = "your_desired_ssid";
const char *esp_password = "your_desired_password";
IPAddress ip(192, 168, 1, xx); // where xx is the desired IP Address
IPAddress gateway(192, 168, 1, 254); // set gateway to match your wifi network
IPAddress subnet(255, 255, 255, 0); // set subnet mask to match your wifi network
ESP8266WebServer server(80);
int status = LOW;
const int pin = 5;
const char* serverIndex = "<form method='POST' action='/update' enctype='multipart/form-data'><input type='file' name='update'><input type='submit' value='Update'></form>";
//Authorization username and password before updating firmware
const char* www_username = "admin";
const char* www_password = "esp8266";
void connectToWifi() {
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.config(ip, gateway, subnet);
WiFi.begin(ssid, password);
while(WiFi.waitForConnectResult() != WL_CONNECTED) {
delay(500);
Serial.print(".");
//ESP.restart();
}
Serial.print("WiFi connected to ");
Serial.println(WiFi.localIP());
}
void createAccessPoint() {
Serial.println("Configuring access point for wifi network *your_desired_ssid*...");
WiFi.softAP(esp_ssid, esp_password);
IPAddress accessIP = WiFi.softAPIP();
Serial.print("ESP AccessPoint IP address: ");
Serial.println(accessIP);
/* Go to http://192.168.4.1 in a web browser
* connected to this access point to see it.
*/
}
void serverResponse(){
server.sendHeader("Connection", "close");
server.sendHeader("Access-Control-Allow-Origin", "*");
server.send(200, "text/plain", String(status));
}
void setup() {
Serial.begin(115200);
pinMode(pin, OUTPUT);
connectToWifi();
ArduinoOTA.begin();
server.on("/fupdate", [](){
if(server.authenticate(www_username, www_password)){
createAccessPoint();
server.sendHeader("Connection", "close");
server.sendHeader("Access-Control-Allow-Origin", "*");
server.send(200, "text/html", serverIndex);
}
else{
return server.requestAuthentication();
}
});
server.on("/status", [](){
serverResponse();
});
server.on("/on", [](){
status = HIGH;
serverResponse();
});
server.on("/off", [](){
status = LOW;
serverResponse();
});
server.on("/update", HTTP_POST, [](){
server.sendHeader("Connection", "close");
server.sendHeader("Access-Control-Allow-Origin", "*");
server.send(200, "text/plain", (Update.hasError())?"FAIL":"OK");
ESP.restart();
},[](){
HTTPUpload upload = server.upload();
if(upload.status == UPLOAD_FILE_START){
Serial.setDebugOutput(true);
WiFiUDP::stopAll();
Serial.printf("Update: %s\n", upload.filename.c_str());
uint32_t maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;
if(!Update.begin(maxSketchSpace)){//start with max available size
Update.printError(Serial);
}
} else if(upload.status == UPLOAD_FILE_WRITE){
if(Update.write(upload.buf, upload.currentSize) != upload.currentSize){
Update.printError(Serial);
}
} else if(upload.status == UPLOAD_FILE_END){
if(Update.end(true)){ //true to set the size to the current progress
Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
} else {
Update.printError(Serial);
}
Serial.setDebugOutput(false);
}
yield();
});
server.begin();
MDNS.addService("http", "tcp", 80);
Serial.print("Open http://");
Serial.print(WiFi.localIP());
Serial.println("/ in your browser to see it working");
}
void loop() {
digitalWrite(pin, status);
ArduinoOTA.handle();
server.handleClient();
delay(1);
}
我有一個簡單的WifiWebServer處理請求。當我發送/fupdate請求時，ESP模塊應該創建熱點，並且我可以通過接入點連接我的計算機以更新固件。爲了更新固件，我設置了授權。如果授權完成，只有T可以上傳新的固件。 但是我的ESP8266模塊在發送/fupdate **請求或授權之前正在創建熱點。這是當我賦予權力時啓用熱點。有人可以如何解決這個問題？