There are two ways to send data to Xively.
- Use the Xively library,
- forms a string that is sent to the Xively server.
I've gotten the Xively library method to work, so I know that the ethernet shield connects to my home network OK, but I'd like to use the other method. I'm trying to use an nRF24L01+ on the same SPI bus as the ethernet shield, and there's something goofy going on that I need to turn off the Ethernet shield in order to use the nRF24L01.
So I think I have to use the second method. My attempts at using the sample code hasn't lead me anywhere, however. I'm using this tutorial:
And really didn't modify the code much, just entered in my feed ID and stuff. This is the output I get from the serial monitor:
You do not have permission to access this resource
disconnecting.
connecting...
HTTP/1.1 401 Unauthorized
Date: Sat, 29 Mar 2014 23:28:16 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 50
Connection: close
WWW-Authenticate: Basic realm="Web Password"
X-Request-Id: xxxxxxx
Set-Cookie: _pachcore_app_session=xxxxxxx; domain=.xively.com; path=/; expires=Sat, 12-Apr-2014 23:28:16 GMT; HttpOnlyYou do not have permission to access this resource
disconnecting.
Here's my code, with the private stuff taking out. If you wouldn't mind taking a look and giving me some advice? I got this code from here:
http://arduino.cc/en/Tutorial/XivelyClient
/*
http://arduino.cc/en/Tutorial/XivelyClient
Xively sensor client
This sketch connects an analog sensor to Xively (http://www.xively.com)
using a Wiznet Ethernet shield. You can use the Arduino Ethernet shield, or
the Adafruit Ethernet shield, either one will work, as long as it's got
a Wiznet Ethernet module on board.
This example has been updated to use version 2.0 of the Xively.com API.
To make it work, create a feed with a datastream, and give it the ID
sensor1. Or change the code below to match your feed.
Circuit:
* Analog sensor attached to analog in 0
* Ethernet shield attached to pins 10, 11, 12, 13
created 15 March 2010
modified 9 Apr 2012
by Tom Igoe with input from Usman Haque and Joe Saavedra
http://arduino.cc/en/Tutorial/XivelyClient
This code is in the public domain.
*/
#include <SPI.h>
#include <Ethernet.h>
#define APIKEY "xxxxxxxx" // replace your xively api key here
#define FEEDID xxxxxxxx // replace your feed ID
#define USERAGENT "Arduinnoooo" // user agent is the project name
// assign a MAC address for the ethernet controller.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
// fill in your address here:
byte mac[] = {0xDE, 0xAD, 0xEE, 0xEE, 0xEE, 0x11};
// fill in an available IP address on your network here,
// for manual configuration:
IPAddress ip(192,168,2,230);
// initialize the library instance:
EthernetClient client;
// 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(173,203,98,29); // numeric IP for api.xively.com 173.203.98.29
//char server[] = "api.xively.com"; // name address for xively API
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
boolean lastConnected = false; // state of the connection last time through the main loop
const unsigned long postingInterval = 10*1000; //delay between updates to Xively.com
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.println("Hola");
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// DHCP failed, so use a fixed IP address:
Ethernet.begin(mac, ip);
}
}
void loop() {
// read the analog sensor:
int sensorReading = 5;
// if there's incoming data from the net connection.
// send it out the serial port. This is for debugging
// purposes only:
if (client.available()) {
char c = client.read();
Serial.print(c);
}
// if there's no net connection, but there was one last time
// through the loop, then stop the client:
if (!client.connected() && lastConnected) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
}
Serial.println("waiting to send data!");
// if you're not connected, and ten seconds have passed since
// your last connection, then connect again and send data:
if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
sendData(sensorReading);
}
// store the state of the connection for next time through
// the loop:
lastConnected = client.connected();
}
// this method makes a HTTP connection to the server:
void sendData(int thisData) {
// if there's a successful connection:
if (client.connect(server, 80)) {
Serial.println("connecting...");
// send the HTTP PUT request:
client.print("PUT /v2/feeds/");
client.print(FEEDID);
client.println(".csv HTTP/1.1");
client.println("Host: api.xively.com");
client.print("X-XivelyApiKey: ");
client.println(APIKEY);
client.print("User-Agent: ");
client.println(USERAGENT);
client.print("Content-Length: ");
// calculate the length of the sensor reading in bytes:
// 8 bytes for "sensor1," + number of digits of the data:
int thisLength = 8 + getLength(thisData);
client.println(thisLength);
// last pieces of the HTTP PUT request:
client.println("Content-Type: text/csv");
client.println("Connection: close");
client.println();
// here's the actual content of the PUT request:
client.print("Temp_LivingRoom,");
client.println(thisData);
}
else {
// if you couldn't make a connection:
Serial.println("connection failed");
Serial.println();
Serial.println("disconnecting.");
client.stop();
}
// note the time that the connection was made or attempted:
lastConnectionTime = millis();
}
// This method calculates the number of digits in the
// sensor reading. Since each digit of the ASCII decimal
// representation is a byte, the number of digits equals
// the number of bytes:
int getLength(int someValue) {
// there's at least one byte:
int digits = 1;
// continually divide the value by ten,
// adding one to the digit count for each
// time you divide, until you're at 0:
int dividend = someValue /10;
while (dividend > 0) {
dividend = dividend /10;
digits++;
}
// return the number of digits:
return digits;
}
