我正在做一个涉及从模拟传感器无线上传数据的项目。在这种情况下，它是一个光传感器。
我正在使用 Arduino Uno R2 和官方的 Arduino Wi-Fi Shield。下面是我的代码：
#include <SPI.h>
#include <WiFi.h>
#include <HttpClient.h>
#include <Xively.h>
char ssid[] = "Bradley's MacBook Pro"; // your network SSID (name)
int status = WL_IDLE_STATUS;
// Your Xively key to let you upload data
char xivelyKey[] = "SOP7lASYJVcRecV98zlHosDc9nLIAXqnDnIxRnXAmNeKorIk";
// Analog pin which we monitor (0 and 1 are used by the Ethernet shield)
int sensorPin = 2;
// Define the strings for our datastream IDs
char sensorId[] = "light";
XivelyDatastream datastreams[] = {
XivelyDatastream(sensorId, strlen(sensorId), DATASTREAM_FLOAT),
};
// Finally, wrap the datastreams into a feed
XivelyFeed feed(1125419529, 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);
// wait 10 seconds for connection:
delay(10000);
}
Serial.println("Connected to wifi");
printWifiStatus();
}
void loop() {
int sensorValue = analogRead(sensorPin);
datastreams[0].setFloat(sensorValue);
Serial.print("Read sensor value ");
Serial.println(datastreams[0].getFloat());
Serial.println("Uploading it to Xively");
int ret = xivelyclient.put(feed, xivelyKey);
Serial.print("xivelyclient.put returned ");
Serial.println(ret);
Serial.println();
delay(15000);
}
但是不幸的是，每次我以串行方式返回此内容时：
Attempting to connect to SSID: Bradley's MacBook Pro
Connected to wifi
SSID: Bradley's MacBook Pro
IP Address: 10.0.2.3
signal strength (RSSI):-20 dBm
Read sensor value 1023.00
Uploading it to Xively
xivelyclient.put returned -1
Read sensor value 1023.00
Uploading it to Xively
xivelyclient.put returned -1
Read sensor value 684.00
Uploading it to Xively
xivelyclient.put returned -1
Read sensor value 684.00
Uploading it to Xively
xivelyclient.put returned -1
Read sensor value 684.00
Uploading it to Xively
No Socket available
xivelyclient.put returned -1
Read sensor value 684.00
Uploading it to Xively
No Socket available
xivelyclient.put returned -1
我注意到，经过几次尝试后，它开始说没有可用的套接字。
有没有人知道我哪里出错了？