Saya ingin mengirim permintaan HTTP GET dari nodemcu saya ke server localhost. Baik nodemcu maupun laptop saya terhubung ke jaringan Wifi yang sama. Meskipun nodemcu terhubung ke jaringan, ia tidak mengirimkan permintaan. Saya mencoba mengirim permintaan secara manual dan menggunakan "tukang pos" dan kemudian berhasil. Jadi menurut saya masalahnya ada pada kode nodemcu atau sesuatu pada perangkat. Setiap ide diterima.
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266HTTPClient.h>
/* Set these to your desired credentials. */
const char *ssid = "******"; //ENTER YOUR WIFI SETTINGS
const char *password = "****";
//Web/Server address to read/write from
//website or IP address of server
//=======================================================================
// Power on setup
//=======================================================================
void setup() {
delay(1000);
Serial.begin(115200);
WiFi.mode(WIFI_OFF); //Prevents reconnection issue (taking too long to connect)
delay(1000);
WiFi.mode(WIFI_STA); //This line hides the viewing of ESP as wifi hotspot
WiFi.begin(ssid, password); //Connect to your WiFi router
Serial.println("");
Serial.print("Connecting");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
//If connection successful show IP address in serial monitor
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP()); //IP address assigned to your ESP
}
//=======================================================================
// Main Program Loop
//=======================================================================
void loop() {
HTTPClient http; //Declare object of class HTTPClient
String ADCData, station, getData, Link;
int adcvalue=253; //Read Analog value of LDR
ADCData = String(adcvalue); //String to interger conversion
station = "B";
//GET Data
getData = "?status=" + ADCData + "&station=" + station ; //Note "?" //added at front
Link = "http://localhost/welcome.php" + getData;
http.begin(Link); //Specify request destination
int httpCode = http.GET(); //Send the request
String payload = http.getString(); //Get the response payload
Serial.println(httpCode); //Print HTTP return code
Serial.println(payload); //Print request response payload
http.end(); //Close connection
delay(5000); //GET Data at every 5 seconds
}
//=======================================================================
Kode php situs localhost ditampilkan di sini.
<html>
<body>
status: <?php echo $_GET["status"]; ?><br>
station: <?php echo $_GET["station"]; ?>
</body>
</html>
getData
, yang berisi parameter kueri. Namun, saya tidak melihat Anda benar-benar menggunakan variabel itu di mana pun? - person Magnus Eriksson   schedule 17.07.2019localhost
karena itu mengacu pada dirinya sendiri (nodemcu memanggil dirinya sendiri). - person Magnus Eriksson   schedule 17.07.2019