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So for those of you who have seen these step-by-step functionality demos, you've probably figured out by now that a lot of them were produced using Energia, which is Arduino for TI. Though, except for maybe this I2C/SMBus demo, there is very little tweaking done, even with the Wi-Fi. And so you could basically run them straight out of the box without any code changes at all. And at some point we'll revisit what some of those tweaks are later in this section.

But for now, let's look a little more detail at Energia at a high level, just to sort of understand what's under the hood. So Energia is yet another programming environment. It's on GitHub, basically run by the community. Energia itself runs on TI LaunchPad and as Boosterpacks, as we've seen. It is actually layered over C but makes programming a bit simpler. And the wiring language is the same language that Arduinos are using.

You can get the Energia from TI.com, though it'll actually board you straight to the Energia.nu website, which we'll refer to in the next couple of slides. And this is another advanced topic that we'll talk about later, debugging with Code Composer.

So a big part of that simplified environment is that you basically do some setup. And then you basically run through a loop. What might look familiar here, for this particular example, is our GPIO example or GPI output or square wave that was running the PFC controller, in this case, Blinky, as we call it. So we'll-- the next slide-- look a little more detail of the process. But taking a step back, the best thing to do is probably consider that Energia is nothing but running an oscilloscope on a TI LaunchPad.

So taking a closer look at the Energia application and process, I guess Energia is red, compared to blue or green. I have trouble with colors. As to that, Arduino might be. You basically use a bunch of dropdowns, one to specify which launchpad you're using. Another dropdown tells you which serial port the particular launch pad is recognized by your PC.

In Windows of course, you'll get a com port. In the case of Linux, you get ttyACM. And I got to admit, I've never plugged a launchpad into a Mac. But I guess there is a dev CU with 52y is the way that the Mac handles that. Then with another dropdown, you can pick a particular example. As we mentioned, we're going to go to our square wave, our GPI output, which is the Blinky demo.

And then we do what they call an upload, which is basically flashing that particular code into the example. And as we saw, we did see blinking. This is, I guess, if you were doing it yourself. So let's try to make some connections now with the Blinky code that we've seen previously on the demos and our Pin maps.

Going back to the Pin map, remember that we had a digital write and figured out which Pin was going to actually do the digital write. Note that there's a delay in here. And the delay, in this case, is a second, because it's 1,000 milliseconds. Full disclosure-- I actually, in the demo, took us down to 100 milliseconds. Because if we got a one second blink, it would be sort of boring.

Also when you look at the setup, here is again the Pin map of the particular digital Pin that we chose to use. And-- talked about that from a Pin Map standpoint earlier. And of course, if you want any more reference about the actual function call itself with digitalWrite, you go Energia.nu. And you can double-click and get a lot more detail on how the digitalWrite works.

And not to leave out the Read ADT example-- of course, we've also got a reference for the analogRead and how that particular works. So at this point, that's about it. It's just more to give you a quick background on how Energia works. And now we're going to jump back into more examples and demos and, in this case, concentrating more on the user interface.

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