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Former Member
Jul 08, 2015 at 06:23 PM

SAP IoT : Unable to send message using arduino board

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Hi All,

I am trying to send data from Arduino UNO R3 board attached to arduino ethernet shield but I am facing some issues.

Below is my code which I am using on arduino board.

#include <Ethernet.h>

#include <SPI.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

byte ip[] = { 192, 168, 0, 107 };

String data = "{\"mode\":\"async\", \"messageType\":\"1\", \"messages\":[{\"value\"=\"true\", \"timestamp\"=\"2015-06-30T01:30:30\"}]}";

const char Server[] = "https://iotmmss0014298301trial.hanatrial.ondemand.com";

const char Url[] = "/com.sap.iotservices.mms/v1/api/http/data/2f071193-41f9-4e2d-a0ee-108f7c797dde";

EthernetClient client;

void setup()

{

Ethernet.begin(mac, ip);

Serial.begin(9600);

delay(1000);

Serial.println("connecting...");

if (client.connect(Server, 80)) {

client.println("POST " + String(Url) + " HTTP/1.1");

client.println("Host: " + String(Server));

Serial.println("connected");

client.println("Authorization: Bearer a6af6518708c4f5d669eff8a2f34b44");

client.println("Content-Type: application/json;charset=utf-8");

client.print(data);

client.println();

} else {

Serial.println("connection failed");

}

}

void loop()

{

if (client.available()) {

char c = client.read();

Serial.print(c);

}

if (!client.connected()) {

Serial.println();

Serial.println("disconnecting.");

client.stop();

for(;;)

;

}

}

But there is arduino is unable to make connection to the IoT server link. (getting connection failed as error)

Please help me resolve this issue.

Regards,

Abhishek Bajaj.