ESP32 UNO D1 R32보드-와이파이 통신

▶ 와이파이 통신

#include <WiFi.h>

 

const char* ssid = "JYPC";

const char* password = "12345678";

 

const char* host = "172.30.1.33";

//const char* streamId = "....................";

//const char* privateKey = "....................";

 

void setup()

{

Serial.begin(115200);

delay(10);

 

// We start by connecting to a WiFi network

 

Serial.println();

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

 

WiFi.begin(ssid, password);

 

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

 

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

}

 

int value = 0;

 

void loop()

{

delay(5000);

++value;

 

Serial.print("connecting to ");

Serial.println(host);

 

// Use WiFiClient class to create TCP connections

WiFiClient client;

const int httpPort = 8081;

if (!client.connect(host, httpPort)) {

Serial.println("connection failed");

return;

}

 

// We now create a URI for the request

String url = "/ArduinoTest/wifiTest.jsp?sensor=456";

// url += streamId;

// url += "?private_key=";

// url += privateKey;

// url += "&value=";

// url += value;

 

Serial.print("Requesting URL: ");

Serial.println(url);

 

// This will send the request to the server

client.print(String("GET ") + url + " HTTP/1.1\r\n" +

"Host: " + host + "\r\n" +

"Connection: close\r\n\r\n");

unsigned long timeout = millis();

while (client.available() == 0) {

if (millis() - timeout > 5000) {

Serial.println(">>> Client Timeout !");

client.stop();

return;

}

}

 

// Read all the lines of the reply from server and print them to Serial

while(client.available()) {

String line = client.readStringUntil('\r');

Serial.print(line);

}

 

Serial.println();

Serial.println("closing connection");

}

 

 

▶ 와이파이 통신 변수로 따로 잡아줘서 loop문 안에만 수정해주면 됨.

 

#include <WiFi.h>

 

const char* ssid = "JYPC";

const char* password = "12345678";

 

const char* host = "172.30.1.33";

//const char* streamId = "....................";

//const char* privateKey = "....................";

 

void setup()

{

Serial.begin(115200);

delay(10);

 

// We start by connecting to a WiFi network

 

Serial.println();

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

 

WiFi.begin(ssid, password);

 

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

 

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

}

 

int value = 0;

 

void loop(){

int sensorValue = analogRead(39);

if(digitalRead(25) == 1){

ServerConn("abcd");

}

}

 

void ServerConn(String sensorData){

delay(5000);

 

Serial.print("connecting to ");

Serial.println(host);

 

// Use WiFiClient class to create TCP connections

WiFiClient client;

const int httpPort = 8081;

if (!client.connect(host, httpPort)) {

Serial.println("connection failed");

return;

}

 

// We now create a URI for the request

String url = "/ArduinoTest/wifiTest.jsp?sensor="+sensorData;

// url += streamId;

// url += "?private_key=";

// url += privateKey;

// url += "&value=";

// url += value;

 

Serial.print("Requesting URL: ");

Serial.println(url);

 

// This will send the request to the server

client.print(String("GET ") + url + " HTTP/1.1\r\n" +

"Host: " + host + "\r\n" +

"Connection: close\r\n\r\n");

unsigned long timeout = millis();

while (client.available() == 0) {

if (millis() - timeout > 5000) {

Serial.println(">>> Client Timeout !");

client.stop();

return;

}

}

 

// Read all the lines of the reply from server and print them to Serial

while(client.available()) {

String line = client.readStringUntil('\r');

Serial.print(line);

}

 

Serial.println();

Serial.println("closing connection");

}