WEBVTT 00:00.270 --> 00:07.740 This is the solution of the previous activity where you have to make an entity fade in, fade out from 00:07.920 --> 00:15.710 directly from the potential meter, and on top of that, you add a cap value that you set from the sale. 00:15.900 --> 00:19.880 And when you set the cover, you from the sale, you also save to it. 00:20.310 --> 00:24.520 So the next time you start the program, you keep the same default setting. 00:25.290 --> 00:27.130 So we have a few different things to do. 00:27.300 --> 00:34.290 Let's go step by step and let's choose the first thing to do so we can directly validate what we are 00:34.290 --> 00:35.850 doing with the memory. 00:36.660 --> 00:39.200 So I'm going to do the sale code. 00:39.210 --> 00:42.600 So first sale begin. 00:45.130 --> 00:50.530 Right, and in the loop, I am going to do if. 00:51.910 --> 00:53.890 Take a look at the label. 00:55.760 --> 00:56.930 Is your return zero? 00:57.050 --> 01:09.190 So if we have data that was received in decision and going to the end data is serial that pass it. 01:09.880 --> 01:10.340 All right. 01:10.760 --> 01:13.810 So I get an integer, OK? 01:13.880 --> 01:15.350 Because this is what we expect. 01:15.350 --> 01:16.520 I get an integer. 01:16.940 --> 01:19.660 And I straight into this volume, though. 01:19.820 --> 01:23.660 Of course, what I'm going to do is also say that that. 01:25.040 --> 01:29.870 Time out with 10 milliseconds so we don't wait too long for this. 01:30.290 --> 01:36.260 OK, so if you don't understand everything here, please go back to the cellular section to practice 01:36.260 --> 01:38.000 more and which the clinicians. 01:38.450 --> 01:38.860 All right. 01:38.870 --> 01:44.210 And now this data before I do anything, I'm going to validate the data. 01:44.720 --> 01:50.930 Whenever you receive something from an external source, you want to validate the data because you don't 01:50.930 --> 01:51.100 know. 01:51.110 --> 01:53.390 Maybe I could send the value. 01:53.570 --> 01:56.120 Ten thousand, OK, if I send 10000. 01:56.150 --> 02:01.710 Well, the thing is that these data, this value is going to be used for the analogue right. 02:01.730 --> 02:02.170 Function. 02:02.200 --> 02:12.870 So we expect a value that is the data is greater or equal than zero and the data is lower. 02:13.190 --> 02:20.840 So let's say strictly lower than 256, which means 255 just for readability. 02:21.620 --> 02:22.250 And this. 02:25.810 --> 02:29.320 And OK, now we have validated the data. 02:29.800 --> 02:37.690 So what I'm going to do is say that print and then data, so I'm just going to validate that when we 02:37.690 --> 02:41.770 are at this point, then I will be able to do it from that. 02:42.460 --> 02:44.080 Right, Kate? 02:44.740 --> 02:46.120 Because we are in the loop. 02:46.750 --> 02:48.300 So I don't want to do it from that. 02:48.310 --> 02:48.610 Right. 02:48.610 --> 02:52.690 Somewhere where I'm not sure how often it will be updated. 02:53.150 --> 02:55.390 But no, let's run that first program. 02:55.390 --> 02:57.400 Something to see if it is activity. 02:58.800 --> 02:59.340 13. 03:02.390 --> 03:05.110 OK, let's open the sale monitor. 03:06.410 --> 03:12.930 Which has nothing for now, and we seen the value, let's say twenty three, I get twenty three and 03:12.960 --> 03:15.470 say I think zero zero. 03:15.470 --> 03:16.600 Two hundred fifty five. 03:16.940 --> 03:18.160 Yes, that's the minimum. 03:18.170 --> 03:18.850 The maximum. 03:19.160 --> 03:20.510 Let's try minus one. 03:21.180 --> 03:22.310 OK, we have nothing. 03:22.790 --> 03:24.890 Let's try 256. 03:25.760 --> 03:30.620 We have nothing in any other value above two hundred fifty six. 03:30.620 --> 03:31.940 We would have nothing. 03:32.210 --> 03:40.090 So we only write it, we sell the print and then when we have received the data and the data is valid 03:40.100 --> 03:40.490 ok. 03:41.740 --> 03:49.570 So we know we can do it from your right, OK, and remove Sayle that print, Ellen. 03:51.080 --> 03:59.180 Here we are sure we are not going to rate it at full speed, and I did that to verify the code, actually, 03:59.180 --> 04:05.780 because when you send some code, maybe it's competing correctly, but maybe you have made some little 04:05.780 --> 04:09.770 mistake and then the behavior is not what you would expect. 04:10.220 --> 04:14.730 So by doing this, you are sure the behavior is correct, so it's not right. 04:14.750 --> 04:20.750 So I'm going to write an address, let's say altoist 350. 04:21.760 --> 04:27.880 I'm going to write the data and it's better not to just how it could be, otherwise what I can do is 04:27.880 --> 04:29.230 create a define here. 04:30.370 --> 04:34.360 So define EPROM and race. 04:35.310 --> 04:43.520 Max, let's see, brightness or intensity of the same thing and let's say three hundred fifty, OK, 04:43.950 --> 04:45.660 and I'm going to put that here. 04:46.350 --> 04:48.990 So the name is quite long but quite explicit. 04:49.620 --> 04:54.840 And of course, because I use EPROM, I need to do include. 04:56.420 --> 04:57.980 EPROM notes H. 04:59.190 --> 05:05.540 All right, so now we have commercialized the cell communication and whenever we send some data, so 05:05.610 --> 05:14.010 some number to the from the computer, we're going to validate that data and write it in to the. 05:15.120 --> 05:20.970 So let us handle the energy and the potential to bring all that. 05:23.100 --> 05:30.150 Well, let's hear Define Energy Bill, which is AFSA 10. 05:31.930 --> 05:33.490 Define what lunchmeat. 05:38.330 --> 05:44.690 In which is a two and in the void, he said, I'm going to do. 05:46.510 --> 05:47.560 Incommode. 05:50.410 --> 05:50.800 In. 05:52.870 --> 06:03.730 But I do need to set a pin mode for the put on the pin because as default, this is an input pin and 06:03.730 --> 06:04.480 then in the loop. 06:04.630 --> 06:09.160 So we have our action one which is checking the sale. 06:09.490 --> 06:11.710 So this is going very fast. 06:12.750 --> 06:19.320 And then I can do my sergant action and I'm going to read the value from the put on Schmitter and also 06:19.320 --> 06:25.440 because the value from the potentiator is from zero to one thousand twenty three, I would need to divide 06:25.440 --> 06:27.020 this value by four. 06:27.300 --> 06:32.370 But we can have a value between zero and two hundred and fifty five for the analogue. 06:32.370 --> 06:32.790 Right. 06:32.790 --> 06:44.190 Function them directly going to the bait and the ripeness is equal to analog read on the potential to 06:44.190 --> 06:44.490 be. 06:48.030 --> 06:50.190 It divided by four. 06:51.660 --> 06:59.820 I read this to give the value between zero and one thousand twenty three, I divide by four and then 06:59.820 --> 07:06.630 I put this directly into the brightness viable, which is a bit dated. 07:06.960 --> 07:15.270 OK, but instead of just putting this inside a viable and then completing this, I just put everything 07:15.270 --> 07:18.720 together and then we have analogue. 07:19.770 --> 07:20.370 Right. 07:21.240 --> 07:25.410 And then with the added brightness. 07:27.520 --> 07:37.010 But the thing we want to cap the volume so we will need to have somewhere a max brightness volume. 07:37.330 --> 07:43.810 OK, I'm going to create here, right, max brightness. 07:44.320 --> 07:49.430 So we have the available not initialized yet, but I'm going to use it here. 07:50.620 --> 07:52.410 So if ready. 07:53.910 --> 07:55.890 Right now, this is. 07:56.820 --> 07:58.620 Greater than the max. 08:00.180 --> 08:05.100 Brightness, what we are going to do is to see that the energy. 08:06.520 --> 08:10.780 So the brightness is equal to the max brightness. 08:11.890 --> 08:15.090 And this is how you can cut a volume. 08:15.660 --> 08:20.180 OK, you check if the value is greater than the maximum. 08:20.860 --> 08:24.790 If yes, then you just say that the value becomes the maximum. 08:25.480 --> 08:29.020 So this can be very useful in many different applications. 08:29.480 --> 08:35.260 So what do we do here is we check the brightness from the bottom and then we make sure it's not greater 08:35.260 --> 08:41.720 than the maximum or else we change it and then we can give it as a parameter for our function. 08:42.160 --> 08:46.450 And now let's actually see how to set this value here. 08:46.810 --> 08:55.090 So first here, when we actually do this, when we write to the memory, we can also do Max. 08:57.130 --> 09:01.820 Rottenness is the data, so the validated data. 09:01.850 --> 09:02.190 OK. 09:03.690 --> 09:11.310 Once we validate the data, we save it into the EPROM, but we also set it in our code so that the value 09:11.310 --> 09:14.640 we send to the sale will be used here. 09:15.270 --> 09:17.370 So that is during the execution of the program. 09:17.550 --> 09:22.490 But now how to initialize the valuable when the program starts? 09:23.360 --> 09:23.590 Well. 09:24.570 --> 09:26.230 So we are going to initialize it here. 09:26.640 --> 09:27.150 Max. 09:28.510 --> 09:29.260 Brightness. 09:31.090 --> 09:33.610 Is equal to EPROM. 09:35.080 --> 09:37.810 Read from this. 09:39.950 --> 09:47.680 Otherwise, OK, so by using a defined here, I can use the name here of the constant here and here, 09:47.900 --> 09:54.020 so if I want to change the address, I just need to change it here and I can be sure that it would not 09:54.020 --> 09:55.220 affect the program. 09:55.910 --> 09:58.340 OK, so here we have negative brightness. 09:58.700 --> 10:05.810 We said it directly first from the employment rates or the value that was stored previously and then 10:05.810 --> 10:07.160 during the program execution. 10:07.730 --> 10:10.090 We can update this at any time. 10:10.100 --> 10:14.690 So we updated in the code and we also added eat into it from memory. 10:14.720 --> 10:21.110 So the next time we start the program again with this line, we are going to get the last value that 10:21.110 --> 10:30.920 we have set here with this and pass it and note that we need to also handle the case if we haven't written 10:30.920 --> 10:32.040 in the April yet. 10:32.080 --> 10:36.700 OK, so far we haven't written in the three hundred fifty address. 10:36.710 --> 10:45.620 So what we are going to write here, maybe two hundred fifty five are also maybe zero and we don't want 10:45.800 --> 10:51.800 the next brightness of zero to start the program because this means here if it's zero. 10:51.810 --> 10:57.140 Well the analog rate we just sent is zero and LG will not be put on. 10:57.540 --> 10:59.300 What I'm going to do is check if. 11:00.910 --> 11:02.530 Mike's Bruckner's. 11:04.230 --> 11:07.800 Is equal to equal to zero. 11:09.410 --> 11:11.120 Then I'm going to do Max. 11:12.750 --> 11:21.030 Bruckner's I'm going to set a default value, let's see, two hundred fifty five and instead of cutting 11:21.030 --> 11:23.910 it, I'm going to do you define. 11:29.240 --> 11:29.990 Brightness. 11:31.390 --> 11:35.610 Default, and it's a two hundred fifty five and let's put that here. 11:36.850 --> 11:40.910 OK, so this way we can change all the parameters directly from those two defined. 11:41.380 --> 11:41.730 All right. 11:41.770 --> 11:49.300 So for the first run, if what we read from the EPROM zero, then we directly change it, but we don't 11:49.300 --> 11:53.410 have zero as a default value and then everything will restart the program. 11:53.410 --> 11:56.930 If we have set a new value here, we're going to the new value. 11:57.490 --> 11:57.970 All right. 11:57.970 --> 11:59.770 And now let's upload the program. 12:02.110 --> 12:09.730 So as you can see here, this is on, but not at the max intensity, so this is just because it was 12:09.730 --> 12:11.580 in the middle of the potential meter. 12:11.920 --> 12:13.180 So I turn it. 12:14.280 --> 12:23.040 Off I go to the minimum and then I turn it on, you can see it goes to the maximum. 12:23.730 --> 12:24.810 Know what I'm going to do? 12:24.810 --> 12:26.730 I'm going to open the cell monitor. 12:29.000 --> 12:34.790 So this will restart the program, as you may know, and I'm going to set a different view, so let's 12:34.790 --> 12:39.120 say I send 60, I send 60. 12:39.140 --> 12:47.750 You can see the brightness is lower than before, OK, because the max brightness is 60, OK, they 12:47.750 --> 12:55.360 can go down to zero and then they can go up, but it will cap at 60. 12:55.490 --> 12:58.460 OK, if I put, let's say, 200. 12:59.800 --> 13:02.150 It the brightness has just increased. 13:02.620 --> 13:06.710 I can go up to two hundred or so as low as zero, up to 200. 13:07.270 --> 13:12.010 Let's put a little bit at the brightness. 13:12.010 --> 13:14.290 Not maximum brightness is eight. 13:14.320 --> 13:20.500 So from zero eight in any value after eight, we just stay at 80. 13:20.530 --> 13:22.730 OK, so I can tend to put on shmita. 13:22.780 --> 13:26.010 The brightness will not increase after a certain point. 13:27.350 --> 13:29.090 And no, let's restart the program. 13:29.930 --> 13:32.370 I'm going to press on this reset button here. 13:33.950 --> 13:40.460 The program has restarted and oh, well, the max intensity is still the same as before. 13:41.360 --> 13:47.030 OK, it is 80 now, let's say, but two hundred forty. 13:48.230 --> 13:49.410 OK, much brighter. 13:50.060 --> 13:51.530 I can. 13:52.700 --> 14:01.060 Or is it the program and it's still 240, OK, can go down and can go up, it's tribal for a very small 14:01.060 --> 14:08.670 value, 20, OK, so the max is 20, I can go to zero, etc., but it's going to zero. 14:09.070 --> 14:10.300 Let's restart the program. 14:14.000 --> 14:20.550 And now let's go up and I can only go up to 20 in the morning. 14:22.140 --> 14:26.610 All right, and that's the end of the security as well as the section on April. 14:27.180 --> 14:31.030 So the important thing is make sure you don't write at full speed. 14:31.170 --> 14:34.740 OK, but if you correctly test your program, you should be fine. 14:34.920 --> 14:40.950 And as you can see, that's a quite powerful way of setting a default value and keeping this default 14:40.950 --> 14:43.850 value for multiple runs of your program.