I want to send sensor value from a arduino mega to Thingworx.
I have a thing and a service created however I got an Client got end of stream when I execute my processing program.When I am using HTTPIE (that I have found on REST API tutorial) to make a single post request it is working however when i use my processing program. I am not able to make it work.
Is there conditions to make multiple post request each time I get my data ?
Is there a way to see what happen on thingworx when I make a POST request ? Thanks in advance
I have follow this tutorial.
https://eacpds.com/thingworx-using-an-arduino-uno-and-serial-connection/
My code :
import http.requests.*;
import processing.net.*; //librarie for post request to the server
import processing.serial.*; //serial connexion to arduino
//import java.net.SocketException; //add for client end of stream (socket)
Client myClient; // Client object
Serial myPort; // The serial port
final int SENSORCOUNT = 12; // This value must match SENSORCOUNT in your Arduino Code
String sensorValues[] = new String[SENSORCOUNT];
String junk;
String beginString = "begin";
//String myServer = "localhost";
String myServer = "127.0.0.1";//server IP, warning don't put port number here
String appKey = "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"; // xxxx are remplace in my code by my application key for admin that you have created on thingworx
String thingName = "myArduinoThing";
String serviceName = "myArduinoService";
String myURI = "http -v -j POST :8080/Thingworx/Things/" + thingName + "/Services/" + serviceName + " appKey:" + appKey;
//meme erreur
//String myURI = "POST/Thingworx/Things/" + thingName + "/Services/" + serviceName + " appKey:" + appKey;
String myHost = "Host: " + myServer;
//String myContent = "Content-type: text/html\n"; we need to send json type
String myContent = "Content-type: application/json\n";
String sensorNames[] = {
"value1", "value2", "value3", "value4", "value5", "value6", "value7", "value8", "value9", "value10", "value11", "value12"
}; //Enter your variable names (these must match the inputs in your Service)
void setup() {
// Print a list of the serial ports, for debugging purposes:
println(Serial.list());
String portName = Serial.list()[0];
myPort = new Serial(this, portName, 9600);
//myPort = new Serial(this, "COM14", 9600); //Port number for serial to arduino
myClient = new Client(this, myServer, 8080);
print("my client: ",myClient);
}
int idx = SENSORCOUNT + 2;
void draw() {
if (myPort.available() > 0)
{
junk = null;
junk = myPort.readStringUntil('\n');
// look for the initial “begin” string that Arduino sends
if (junk != null)
{
if (beginString.equals(trim(junk)))
{
junk = null;
idx=0;
}
}
//Read each sensor value
if ((junk != null) && (idx < SENSORCOUNT))
{
sensorValues[idx] = junk;
junk = null;
idx++;
}
//When all sensor values have been read, send the info to ThingWorx
if (idx == SENSORCOUNT)
{
// myURI=trim(myURI);// ajout
print("my URI : ",myURI);
myClient.write(myURI);
for (int index = 0; index < SENSORCOUNT; index++)
{
//myClient.write("" + sensorNames[index] + "=" + trim(sensorValues[index] + " "));
myClient.write(sensorNames[index] + "=" + trim(sensorValues[index])+"");
}
//myClient.write(" HTTP/1.1\r\n");
print("send http");
myClient.write(myHost + "\r\n");
myClient.write(myContent + "\r\n");
println("Sending this REST call:");
print(myURI);
for (int index = 0; index < SENSORCOUNT; index++)
{
print(" " + sensorNames[index] + "=" + trim(sensorValues[index] + " "));
}
print(" HTTP/1.1\n");
print(myHost + '\n');
print(myContent + '\n');
print('\n');
idx = SENSORCOUNT + 2;
}
}
}
