Question

背景：我试图从一个简单的开关传感器上传数据，以学习Xively方法。我正在使用带有WiFi Shield的Arduino Uno。我对Xively库中的示例草图进行了一些简单的更改，以使其非常简单。我已阅读文档和常见问题解答，并在网上搜索。有一个类似的问题（无法使用Arduino + wifi屏蔽连接到Xively，“ret = -1没有可用的套接字），答案是减少加载的库的数量。我使用的是相同的库列表post.I还更新了我的Arduino IDE并下载了最新的xively和HTTP库。代码编译没有错误。我在xively网站上重新加载了我的设备并获得了一个新的API密钥和编号。另外，我保证了使用正确的传感器名称添加了通道。我还检查了我的路由器并确保WiFi屏蔽连接正确。

问题：我无法在Xively网站上看到数据，并且我在Arduino的串行监视器上不断收到以下错误消息：

xivelyclint.put返回-1

此外，经过多次尝试，我得到“没有套接字可用”

问题：代码有问题还是其他问题？

当前的Arduino代码（实际的ssid，密码和API密钥以及删除的数字）：

#include <SPI.h>
#include <WiFi.h>
#include <HttpClient.h>
#include <Xively.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;

// Your Xively key to let you upload data
char xivelyKey[] = "api_key";

// Analog pin which we're monitoring (0 and 1 are used by the Ethernet shield)
int sensorPin = 2;

// Define the strings for our datastream IDs
char sensorId[] = "sensor_id";
XivelyDatastream datastreams[] = {
  XivelyDatastream(sensorId, strlen(sensorId), DATASTREAM_INT),
};
// Finally, wrap the datastreams into a feed
XivelyFeed feed(feed no., datastreams, 1 /* number of datastreams */);

WiFiClient client;
XivelyClient xivelyclient(client);

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");
}
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);

  Serial.println("Starting single datastream upload to Xively...");
  Serial.println();

  // attempt to connect to Wifi network:
  while ( status != WL_CONNECTED) { 
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    status = WiFi.begin(ssid, pass);
    // wait 10 seconds for connection:
    delay(10000);
  } 
  Serial.println("Connected to wifi");
  printWifiStatus();
}

void loop() {
  int sensorValue = digitalRead(sensorPin);
  datastreams[0].setInt(sensorValue);

  Serial.print("Read sensor value ");
  Serial.println(datastreams[0].getInt());

  Serial.println("Uploading it to Xively");
  int ret = xivelyclient.put(feed, xivelyKey);
  Serial.print("xivelyclient.put returned ");
  Serial.println(ret);

  Serial.println();
  delay(15000);
}

无法上传数据获取xivelyclient.put返回-1

0 个答案: