我尝试为光传感器修改温度 Web 面板示例（在 arduino-1.5.6-rw/libraries/Bridge/examples/TemperatureWebPanel 中找到）。不幸的是，似乎即使是最简单的通过 wifi 接收和传输的结果也不起作用！如您所见，我什至注释掉了工作部分，只是将一些文本发送回浏览器，但我仍然在浏览器中什么也看不到：
#include <Bridge.h>
#include <YunServer.h>
#include <YunClient.h>
// Listen on default port 5555, the webserver on the Yun
// will forward there all the HTTP requests for us.
YunServer server;
String startString;
long hits = 0;
void setup() {
Serial.begin(9600);
// For debugging, wait until the serial console is connected.
/*delay(4000);
while(!Serial);
Bridge.begin();
*/
// Bridge startup
pinMode(13, OUTPUT);
Bridge.begin();
digitalWrite(13, HIGH);
pinMode(A0, INPUT);
// Listen for incoming connection only from localhost
// (no one from the external network could connect)
server.listenOnLocalhost();
server.begin();
// get the time that this sketch started:
Process startTime;
startTime.runShellCommand("date");
while (startTime.available()) {
char c = startTime.read();
startString += c;
}
Serial.println("yeah\n");
Serial.println(startTime);
}
void loop() {
// Get clients coming from server
Serial.println("a\n");
YunClient client = server.accept();
// There is a new client?
if (client) {
Serial.println("Client!\n");
// read the command
String command = client.readString();
client.print('(This should definitely be sent over bridge)');
/*command.trim(); //kill whitespace
Serial.println(command);
// is "temperature" command?
if (command == "temperature") {
// get the time from the server:
Process time;
time.runShellCommand("date");
String timeString = "";
while (time.available()) {
char c = time.read();
timeString += c;
}
Serial.println(timeString);
int sensorValue = analogRead(A0);
// convert the reading to millivolts:
client.print("Current time on the Yún: ");
client.println(timeString);
client.print("<br>Current value: ");
client.print(sensorValue);
client.print("<br>This sketch has been running since ");
client.print(startString);
client.print("<br>Hits so far: ");
client.print(hits);
}*/
// Close connection and free resources.
client.stop();
hits++;
}
delay(50); // Poll every 50ms
}
我在串行监视器中多次看到“a”，但从未在arduino.local/arduino/temperatureurl 中看到任何内容，只是一个空白响应。
此外，一段时间后，云似乎与网络断开连接，无法通过 http 或 ssh 访问。考虑到 ssh 是与这台计算机通信的主要方式，如何调试这样的问题？