Calling the SetDigitalOutput function for an Arduino microcontroller

[Former Member]

Hello,

I am trying to call the SetDigitalOutput function for an Arduino Uno microcontroller that has an Arduino Ethernet shield. I am able to call this function from the Teleduino website. If I have to call the function I use the below URL.

https://us01.proxy.teleduino.org/api/1.0/328.php?k=<key for my Arduino Uno>&r=setDigitalOutput&pin=3&output=1&expire_time=0&save=1

Using the above URL I can set a value of 1 to a digital pin 3 on the microcontroller.

Now, what I am trying to figure out is how I can call the SetDigitalOutput function from the Hana Cloud Platform (hcp) IOT services. In the MMS cockpit when I paste the above URL and paste it as shown below in the screenshot it doesn't do anything to my Arduino

Is there a lot to be done yet? My main concern is that the Teleduino URL appears to be a https Get command while all the MMS messaging technique appear to be sending messages through the Post command.

Comments welcome.

Regards

Bala

[anton_levin · Accepted solution]

Hello Bala, let's elaborate it a bit.

What you want, is to send a message to your device (Arduino Uno in your case), right?

What you did, is that you used Teleduino Platform [1] and its setDigitalOutput API [2] (which is a HTTP GET endpoint which you may call and set query parameters i.e "pin", "output" etc) to send a message to Arduino.

If yo want to send a message to your device with the HCP IoT Services, you will have to use its Push API. Please, see official documentation here [3]

It might be also helpful to explore different examples from the IoT Starter Kit on GitHub [4] and especially Arduino scripts to send the messages from the device as well as push the message to the device [5] (ESP8266 controller was taken there as an example hardware).

Regards,

Anton

[1] Arduino Internet / Web Control with Teleduino

[2] Arduino Internet / Web Control with Teleduino

[3] SAP HANA Cloud Platform Internet of Things (IoT) Services

[4] GitHub - SAP/iot-starterkit: This repository provides information and code for working with SAP HANA...

[5] iot-starterkit/src/hardware/ESP8266/Arduino at master · SAP/iot-starterkit · GitHub