SAP IOT – Connecting the dots
There has recently been a lot of palpable excitement , and rightly so , around Internet of Things (IOT) . SAP has been quick to take a leap and come up with set of IOT enabling services bundled within its HANA Cloud Platform (HCP ) .
When I started to play around with SAP IOT some time ago , I found a lot of awesome stuff on internet in the form of blogs and presentations . However , what I could not find was something that would quickly explain to
me as to how the SAP IOT paradigm works on a technical level . I have been able to figure out most of the stuff after a couple of weeks ( thanks to the awesome SDN contributors ) and am sharing it here for the benefit of impatient folks like myself .
A number of questions had popped up in my mind when I was trying to understand SAP IOT . So I am presenting this blog as a series of questions and answers .
Question Number 1 : I do not have an IOT device . Will I still be able to learn anything ?
Answer : Yes , even if you do not have an IOT device there is still a lot that you can learn and understand . In fact , you can gain 90 percent of knowledge around SAP IOT without an actual device .
Question Number 2 : OK. Is there online available that will help me learn ?
Answer : Lots of it . There is the official SAP help page that you can refer to . There is also some very good stuff on the IOT page on SDN . (I will provide the links at the end of the blog )
Question Number 3 : So how do I start .
Answer : There are three basic and essential steps
- Configure messages types to define the message body and the direction of the message ( from device , to device , bidirectional )
- Configure device type . Device types will be associated with message types .
- Create devices . Each device will be one of the Device Types that you have defined above and thereby will be associated with a message type . Note that the devices that you create here are all virtual devices . Real devices will mapto one of these virtual devices .
Question Number 4 : What next ? How do I send messages from HANA Cloud Platform ( HCP ) to the device ?
Answer : SAP Provided a web client that will allow you to send data to devices and also receive data from them ( receiving is what you will be doing most of the time ) . You just need to enter the correct values for Device ID and message ID and
make sure that your message format matches the message configuration .
Question Number 5 : So the messages that I receive from ( or send to ) the device , are they stored on HCP ?
Answer : Yes . These messages are stored in tables in HCP . You can read them and use the data in whichever way you want to .
Question Number 6 : Can I expose this data to a UI5 application ?
Answer : Yes you can . The data can be exposed via an XS oData service and can be consumed by a UI5 application .
Question Number 7 : How do I make a real IOT device talk to HCP .
Answer : Coming soon . As soon as I can make it work .
Here is some great content that helped me navigate my way around SAP IOT :