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Up to now, we have been programming the 3-2 by having it constantly connected to the computer and we

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were able to click on the green button to get the program to run.

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I imagine when you have finished development and you want your hospitality to be independent of your

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computer and to be able to automatically execute a given script when power is applied.

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There's a couple of ways by which you can do that in this.

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Let's show you both of them both ways involve the supply file.

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So the bid to be fine as long as it exists, is going to be the file that the EPA authority will attempt

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to execute when it's powered up.

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You can see here that in this instance, it does have some code in it, but it's all commented out.

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And that's why when we do start the hospitality, nothing happens.

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There is code that is coming out is not going to be executed.

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You can replace this code with your own code.

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So I'm going to do this right now.

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I'm going to copy the code from previous lecture and I'm going to pasted here.

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It's going to leave the previous committed out code as it is.

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I'm going to paste it in here and then save this file.

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Now, what I'm going to do is I'm going to disconnect the computer, cable, USB, cable, and I'm going

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to replace it with a cable that I have connected to a power supply.

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This one's a battery power supply and plug it in and you can see the reality is blinking, meaning that

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my code in the P.

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Y script is being executed.

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So that's the first way.

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Could you connect my Richard back to my computer and now let's see what happens.

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Remember that pill, one that contains code and my attitude is executing it, which means that it's

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locked inside this loop, going to click on the stop restart back in button.

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And.

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I'm not getting any files in the file browser for the connected device.

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Because, again, the device is busy executing the Blink script, so I'm going to send a control scene

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to interrupt the execution so that the device is released and I can continue to interact with it via

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Sony.

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So that's something to remember.

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When you do have a script that contains infinite loops like that, you need to remember to hit control,

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see to regain control of the device.

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So the first way is to just simply copy your code inside the file and then it will execute the contained

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code.

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But a better way to go about doing this is to use input.

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And because we already have the code that we want to execute on bood in a separate file, we don't want

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really to copy across into the boot.

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So a better way to do that and reuse the work that we have already done is to use the import function

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and just simply import Elida.

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And it's called Blinkx without the extensions.

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So this.

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To save this file, so say the new version of Bitter Pill, why so what's going to happen now is when

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power is applied to the big three to it is going to look inside.

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Would it be wise for executable code?

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It's going to find a link to the ality and it's called blink.

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That file will import it and they will execute it as it comes in.

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And the effect is going to be exactly the same, except that now we can continue working on our ALYDA

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linked or Peepli File, knowing that it will be executed on boot up because of the input instruction

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in line seven of the top file.

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So I've got my input statement here.

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But just one thing that I've noticed is that the ability in cobbling to Kidwai file is not my ISP through

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the device, it's on my local file system, so I won't need to bring it across.

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I believe there is this file here, so I'm just going to upload it.

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And now that it is here, that reference will actually be correct and it will work.

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All right.

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So I'm going to unplug the data from my computer and then bring the power cable from the battery room.

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And there you go.

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It works.

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Let's connect back to Sony, and it's like power, like two computers, USB, cable.

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And the hospital, too, is now locked into the infinite loop.

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So I'm going to hit on the stop button to restart the back end.

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And then control, see?

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To stop the execution and we've got control back.

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OK, so let's sit with the two methods by which you can automatically run a program on time or power

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up on your AHP suited to the last thing that I want to show you in this section is how to do simple

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debugging of your of Python scripts using phony I.D. And we'll do that in the next lecture.