我的新Arduino Uno + WifiShield出現問題。我想測試示例代碼,通過arduino.cc或Arduino的IDE「WifiChatServer」發表:Arduino Uno + WifiShield:Telnet錯誤「拒絕連接」
#include <SPI.h>
#include <WiFi.h>
char ssid[] = "ssid"; // your network SSID (name)
char pass[] = "password"; // 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;
WiFiServer server(23);
boolean alreadyConnected = false; // whether or not the client was connected previously
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);
}
// 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);
}
// start the server:
server.begin();
// you're connected now, so print out the status:
printWifiStatus();
}
void loop() {
// wait for a new client:
WiFiClient client = server.available();
// when the client sends the first byte, say hello:
if (client) {
if (!alreadyConnected) {
// clead out the input buffer:
client.flush();
Serial.println("We have a new client");
client.println("Hello, client!");
alreadyConnected = true;
}
if (client.available() > 0) {
// read the bytes incoming from the client:
char thisChar = client.read();
// echo the bytes back to the client:
server.write(thisChar);
// echo the bytes to the server as well:
Serial.write(thisChar);
}
}
}
void printWifiStatus() {
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");
}
你也可以在這裏查找代碼:http://arduino.cc/en/Tutorial/WiFiChatServer
我沒有做任何除外變化進入我的家庭無線連接數據。將代碼上傳到我的arduino後,控制器連接到wifi並打印他的ip地址,由我的路由器分配。此外,路由器上的連接設備列表中列出了arduino。
從我的筆記本電腦ping arduino成功!
嘗試通過telnet(putty)連接到arduino時,顯示錯誤「連接被拒絕」。我嘗試使用另一個端口(8888/9999)和智能手機連接筆記本電腦上的禁用防火牆,每次都出現相同的錯誤。
這裏有一個簡單的ping和Telnet的請求Wireshark的捕獲:http://imagizer.imageshack.us/v2/800x600q90/34/ayo5.png
任何人都有一個想法來解決這個問題?
無法解釋它,但它使用完全相同的代碼..荒謬的是它是最好的。 Thx的提示;-) – JU5T1C3