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웹서버 통신 질문입니다.
김국환 | 2015-05-14
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#include
#include
char ssid[] = "AXLER-AP"; // your network SSID (name)
char pass[] = "16881688"; // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0; // your network key Index number (needed only for WEP)
int status = WL_IDLE_STATUS;
// if you don't want to use DNS (and reduce your sketch size)
// use the numeric IP instead of the name for the server:
//IPAddress server(74,125,232,128); // numeric IP for Google (no DNS)
char server[] = "lunahigh.sshel.com"; // name address for Google (using DNS)
// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 80 is default for HTTP):
WiFiClient client;
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while (true);
}
String fv = WiFi.firmwareVersion();
if ( fv != "1.1.0" )
Serial.println("Please upgrade the firmware");
// attempt to connect to Wifi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
Serial.println("Connected to wifi");
printWifiStatus();
Serial.println("\nStarting connection to server...");
// if you get a connection, report back via serial:
}
void loop() {
cn();
// if there are incoming bytes available
// from the server, read them and print them:
while (client.available()) {
char c = client.read();
Serial.write(c);
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting from server.");
// client.stop();
// do nothing forevermore:
// while (true);
}
}
void cn()
{
if (client.connect(server, 80)) {
Serial.println("connected to server");
// Make a HTTP request:
client.print("GET http://lunahigh.sshel.com/test/newardup.php?");
client.println("Host: lunahigh.sshel.com");
client.println("Connection: close");
client.println("refresh: 1");
client.println();
}
}
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
}
----------------------------------------------- 안녕하세요. 웹서버로 실시간 값을 읽어오게 하고싶은데 모르는게 많습니다. 먼저 안드로이드 어플리케이션과 /호스팅 웹서버 /아두이노(와이파이쉴드) 로 통신을합니다. 위의 코드는 웹클라이언트 예제를 변경한건데 실행을 하면 ------------------- connected to server connected to server connected to server connected to server NO Socket availabe ------------------- 이런 메시지가 뜹니다. 어느 부분을 고쳐야 웹서버에서 실시간으로 데이터를 받을 수 있을까요? 폴링방식으로 리프레쉬를 하라고했는데 도저히 어떻게 해야될지 모르겠습니다.
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| 이전글 | 리드스위치를 이용한 속도계만들기 질문입니다.... | 2015-05-13 |
| 다음글 | 궁금한 것이 있습니다. | 2015-05-14 |
