Hi!
I'm new to arduino.
I want to make an automatic plant watering system. two important functions are:
-send data to cosm
-telnet client to change setpoint for soil moist
So i have tried to combine the examples for cosmClient og chatServer.
/*
Cosm sensor client
This sketch connects an analog sensor to Cosm (http://www.cosm.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 Cosm.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
updated 16 Mar 2012
by Tom Igoe with input from Usman Haque and Joe Saavedra
http://arduino.cc/en/Tutorial/PachubeClient
This code is in the public domain.
*/
#include <SPI.h>
#include <Ethernet.h>
#define APIKEY "of3ryVkzitUd7Sz9wdXXJ65Z0-2SAKw2djZKNFl2UW1VWT0g" // your cosm api key
#define FEEDID 61758 // your feed ID
#define USERAGENT "Cosm Arduino Example (61758)" // 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[] = { 0x90, 0xa2, 0xda, 0x00, 0x78, 0x08 };
// fill in an available IP address on your network here,
// for manual configuration:
IPAddress ip(10,0,1,20);
// initialize the library instance:
EthernetClient cosmclient;
// 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 cosmserver(216,52,233,121); // numeric IP for api.cosm.com
//char server[] = "api.cosm.com"; // name address for cosm 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 Cosm.com
// telnet defaults to port 23
EthernetServer telnetserver(23);
boolean gotAMessage = false; // whether or not you got a message from the client yet
void setup() {
// start serial port:
Serial.begin(9600);
// 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);
}
//Telnet config
IPAddress ip(192,168,0, 150);
IPAddress gateway(192,168,0, 1);
IPAddress subnet(255, 255, 255, 0);
Ethernet.begin(mac, ip, gateway, subnet);
// start listening for clients
telnetserver.begin();
}
void loop() {
EthernetClient telnetclient = telnetserver.available();
// when the client sends the first byte, say hello:
if (telnetclient) {
if (!gotAMessage) {
Serial.println("We have a new client");
telnetclient.println("Hello, client!");
gotAMessage = true;
}
// read the bytes incoming from the client:
char thisChar = telnetclient.read();
// echo the bytes back to the client:
telnetserver.write(thisChar);
// echo the bytes to the server as well:
Serial.print(thisChar);
}
// read the analog sensor:
int sensorReading = analogRead(A0);
// if there's incoming data from the net connection.
// send it out the serial port. This is for debugging
// purposes only:
if (cosmclient.available()) {
char c = cosmclient.read();
Serial.print(c);
}
// if there's no net connection, but there was one last time
// through the loop, then stop the client:
if (!cosmclient.connected() && lastConnected) {
Serial.println();
Serial.println("disconnecting.");
cosmclient.stop();
}
// if you're not connected, and ten seconds have passed since
// your last connection, then connect again and send data:
if(!cosmclient.connected() && (millis() - lastConnectionTime > postingInterval)) {
sendData(sensorReading);
}
// store the state of the connection for next time through
// the loop:
lastConnected = cosmclient.connected();
}
// this method makes a HTTP connection to the server:
void sendData(int thisData) {
// if there's a successful connection:
if (cosmclient.connect(cosmserver, 80)) {
Serial.println("connecting...");
// send the HTTP PUT request:
cosmclient.print("PUT /v2/feeds/");
cosmclient.print(FEEDID);
cosmclient.println(".csv HTTP/1.1");
cosmclient.println("Host: api.cosm.com");
cosmclient.print("X-ApiKey: ");
cosmclient.println(APIKEY);
cosmclient.print("User-Agent: ");
cosmclient.println(USERAGENT);
cosmclient.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);
cosmclient.println(thisLength);
// last pieces of the HTTP PUT request:
cosmclient.println("Content-Type: text/csv");
cosmclient.println("Connection: close");
cosmclient.println();
// here's the actual content of the PUT request:
cosmclient.print("sensor1,");
cosmclient.println(thisData);
}
else {
// if you couldn't make a connection:
Serial.println("connection failed");
Serial.println();
Serial.println("disconnecting.");
cosmclient.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;
}
Over the serialport I get this:
connection failed
disconnecting.
We have a new client
ÿû ÿû ÿûÿû'ÿýÿûÿýÿþ ÿþ ÿþÿþ'ÿüÿû$ÿþ$tset
connection faileddisconnecting.
connection faileddisconnecting.
connection faileddisconnecting.
connection faileddisconnecting.
connection faileddisconnecting.
connection faileddisconnecting.
connection failed
The tset was a typo, trying to write test, using putty
No API requests on cosm.com
How can I make the cosm part work? It looks like the telnet server is working.. (exept for the strange letters: ÿû ÿû ÿûÿû'ÿýÿûÿýÿþ ÿþ ÿþÿþ'ÿüÿû$ÿþ$)
Please help a newbie with some code!
regards Magnus
Norway