I have tried for many hours to send data from the Arduino with HDC1008-Sensor (Temperature, Humidity) but at last i dont get any further. I tried to adjust the Weather App with Arduino Uno Project. The Thing is a Generic Thing and the properties (Temp, Humid) are from type Number.
I have created one Service:
The adjusted Code for the Arduino:
#include <HDC100X.h>
#include <Wire.h>
#include <SPI.h>
#include <WiFi101.h>
//How many values you will be pushing to ThingWorx
#define propertyCount 2
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local Network:
char server[] = "192.168.2.105";
char ssid[] = "xxxxxx"; // your network SSID (name)
char pass[] = "xxxxxx"; // your network password
int status = WL_IDLE_STATUS;
WiFiClient client;
//ThingWorx App key which replaces login credentials)
char appKey[] = "d9e8e9de-f548-43e0-aeaa-2b9c6847c7dc";
// ThingWorx Thing name for which you want to set properties values
char thingName[] = "SteamSensor2";
//Interval of time at which you want the properties values to be sent to TWX server
int timeBetweenRefresh = 5000;
// ThingWorx service that will set values for the properties you need
// See the documentation for this tutorial for more information
char serviceName[] = "SetTempAndHumid";
//Initialize Properties Names and Values Arrays
char* propertyNames[] = {"Temp", "Humid"};
double propertyValues[propertyCount];
// last time you connected to the server, in milliseconds
unsigned long lastConnectionTime = 0;
// state of the connection last time through the main loop
boolean lastConnected = false;
//Initialize an HTU21D library object to read
// temperature and humidity data from your connected sensor
HDC100X hdc(0x43);
void setup() {
// start serial port:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
//initialize HTU21D object to read values from sensors
hdc.begin(HDC100X_TEMP_HUMI,HDC100X_14BIT,HDC100X_14BIT,DISABLE);
Serial.println("Attempting to connect to WPA network...");
Serial.print("SSID: ");
Serial.println(ssid);
status = WiFi.begin(ssid, pass);
if ( status != WL_CONNECTED) {
Serial.println("Couldn't get a wifi connection");
// don't do anything else:
while(true);
}
else {
Serial.println("Connected to wifi");
Serial.println("\nStarting connection...");
// if you get a connection, report back via serial:
if (client.connect(server, 80)) {
Serial.println("connected1");
}
}
}
void loop() {
// Aquire sensor values
propertyValues[0] = hdc.getTemp();
propertyValues[1] = hdc.getHumi();
// wait the established interval of time before
// reading values from the sensor
// and sending them to the TWX server again
// delay(timeBetweenRefresh);
if (millis() - lastConnectionTime > timeBetweenRefresh) {
updateValues(propertyValues, client, server, appKey, thingName, serviceName, propertyNames);
}
}
void updateValues(double values[] , WiFiClient &client, char server[], char appKey[], char thingName[], char serviceName[], char* sensorNames[])
{
//build the String with the data that you will send
//through REST calls to your TWX server
char data[80];
strcpy(data, "?appKey=");
strcat(data, appKey);
strcat(data, "&method=post&x-thingworx-session=true");
// if you get a connection, report back via serial:
if (client.connected()) {
Serial.println("connected2");
// send the HTTP POST request:
client.print("POST /Thingworx/Things/");
client.print(thingName);
client.print("/Services/");
client.print(serviceName);
client.print(data);
client.print("<");
for (int idx = 0; idx < propertyCount; idx++)
{
client.print("&");
client.print(propertyNames[idx]);
client.print("=");
client.print(propertyValues[idx]);
}
client.print(">");
client.println(" HTTP/1.1");
client.print("Host: ");
client.println(server);
client.println("Content-Type: text/html");
client.println();
//client.stop();
lastConnectionTime = millis();
// print the request out
Serial.print("POST /Thingworx/Things/");
Serial.print(thingName);
Serial.print("/Services/");
Serial.print(serviceName);
Serial.print(data);
Serial.print("<");
for (int idx = 0; idx < propertyCount; idx++)
{
Serial.print("&");
Serial.print(propertyNames[idx]);
Serial.print("=");
Serial.print(propertyValues[idx]);
}
Serial.print(">");
Serial.println(" HTTP/1.1");
Serial.print("Host: ");
Serial.println(server);
Serial.println("Content-Type: text/html");
Serial.println();
}
else {
// kf you didn't get a connection to the server:
Serial.println("the connection could not be established");
client.stop();
}
}
The generated Serial-Output:
Attempting to connect to WPA network...
SSID: xxxx
Connected to wifi
Starting connection...
connected1
connected2
POST /Thingworx/Things/SteamSensor2/Services/SetTempAndHumid?appKey=d9e8e9de-f548-43e0-aeaa-2b9c6847c7dc&method=post&x-thingworx-session=true<&Temp=24.45&Humid=32.41> HTTP/1.1
Host: 192.168.2.105
Content-Type: text/html
And I tried the HTTP-Request Manual what ended up like this:
for: http://192.168.2.105/Thingworx/Things/SteamSensor2/Services/SetTempAndHumid?appKey=d9e8e9de-f548-43e0-aeaa-2b9c6847c7dc&method=post&x-thingworx-session=true<&Temp=24.40&Humid=32.21>
I think that the Arduino has established a Connection to my local ThingWorx Server, but I have not found any proof for this like a log-file.
Because of the "Unable To Convert From Java.lang.String to NUMBER"-Advice I changed the Base-Type of the Properties to String, but the message was still the same.
Next I added to the Service "parseFloat", but there is still the same Problem.
Marius, first thing would be to check for the Thing's (from which you have shared the screenshot above) isConnected property once connected you'll see following highlighted value changed to true
Otherwise you can also navigate to the \\ThingworxStorage\logs and check for the applicationlog.log the other option would be to check from the ThingWorx > Composer > Monitoring > RemoteThings
