1 00:00:00,060 --> 00:00:05,520 So let us start with adding a driver necessary for all the ideas that we have added, Rachel. 2 00:00:05,730 --> 00:00:11,430 If you go to a board support package, the recommended driver for our GPIO instance of an eyepiece is 3 00:00:11,730 --> 00:00:12,570 Dubai, right? 4 00:00:12,570 --> 00:00:17,130 So we just go ahead and there the queue, right? 5 00:00:17,610 --> 00:00:21,050 You just need to add a prefix that's X and then GPI, right? 6 00:00:21,750 --> 00:00:27,810 This is the driver file, which will be providing us the list of an EPA that allows us to interact with 7 00:00:27,810 --> 00:00:35,610 that GPI right along with this, we know that we need to have an access to environmental information 8 00:00:35,610 --> 00:00:41,590 which is present in that experimental, not accurate along with this to work with the engine controller. 9 00:00:41,910 --> 00:00:44,580 So if you just explore the again. 10 00:00:45,690 --> 00:00:48,250 OK, so we have an SUV, OK? 11 00:00:48,720 --> 00:00:50,910 That is our electric controller. 12 00:00:51,030 --> 00:00:51,360 OK. 13 00:00:51,810 --> 00:00:54,480 And that will be sensing and into from the sources. 14 00:00:54,480 --> 00:00:56,700 So we need to include this driver, right? 15 00:00:56,700 --> 00:00:57,660 So we go ahead. 16 00:00:57,840 --> 00:01:02,070 And then we had hash include, right? 17 00:01:03,110 --> 00:01:05,740 X, see you see, Dr.. 18 00:01:06,410 --> 00:01:10,730 One more thing that we need to do is to enable an exception handler, OK? 19 00:01:10,730 --> 00:01:17,520 And for that, we have an EPA president until unless for exception daughter. 20 00:01:17,910 --> 00:01:21,540 So this will be the list of the drivers that you require. 21 00:01:21,680 --> 00:01:21,990 OK. 22 00:01:23,000 --> 00:01:27,860 As you work with that interest, be only difference as you use a different peripheral. 23 00:01:27,860 --> 00:01:30,080 Is the GPI driver, right? 24 00:01:30,080 --> 00:01:35,240 So that will be different for the rest of the drivers you would be requiring right now. 25 00:01:35,240 --> 00:01:40,500 If you analyze whatever you have summarized, the first step is to perform an initialization right to 26 00:01:40,500 --> 00:01:47,390 the initialization of both the the paper, as well as an x ray or an intra controller. 27 00:01:47,390 --> 00:01:49,460 So we will be proceeding. 28 00:01:50,930 --> 00:01:55,220 And first, let's just explore the GPI, right? 29 00:01:55,520 --> 00:01:59,570 So this consists of all the function that could be used to work around with that UPI. 30 00:02:00,050 --> 00:02:01,550 So we have a two structure, right? 31 00:02:01,550 --> 00:02:08,120 So GPI config, OK, which is a config structure that we will be adding and this will again be appointed. 32 00:02:08,460 --> 00:02:12,380 So let me just leave this stupid you can pick OK? 33 00:02:12,380 --> 00:02:15,100 And the next structure that we require is an instance. 34 00:02:15,470 --> 00:02:18,770 So we just copy and then we add it all here, right? 35 00:02:18,770 --> 00:02:22,770 So these are the two structure which are required for initialization, you go. 36 00:02:23,120 --> 00:02:26,500 That us declared one function, which we need it. 37 00:02:27,800 --> 00:02:31,720 This consists of all the functions that could be used to initialized UPI. 38 00:02:31,760 --> 00:02:32,030 Right? 39 00:02:32,600 --> 00:02:38,630 So if you go ahead, the first function that we call is look up configuration, where we will be by 40 00:02:38,710 --> 00:02:39,760 a single device, Heidi. 41 00:02:39,770 --> 00:02:42,080 And this can lead to conflict structure for us. 42 00:02:42,080 --> 00:02:45,130 So we go head to head and will not see, right? 43 00:02:45,140 --> 00:02:51,920 So you can say, OK, so our code structure will be was to look up conflict where we are a device. 44 00:02:52,190 --> 00:02:56,900 So if you go to an X parameter dot fight and search for you. 45 00:02:57,140 --> 00:02:57,460 Right. 46 00:02:57,470 --> 00:03:03,110 So here you get the device that you need to add to a look up, right? 47 00:03:03,110 --> 00:03:05,320 So this will generate the config structure for us. 48 00:03:05,330 --> 00:03:10,190 And once we have a config structure, the initialization process is very simple. 49 00:03:10,190 --> 00:03:17,960 You just need to see if the initialize and designate criteria to first document is an instance structure, 50 00:03:18,410 --> 00:03:22,670 then you need to provide a config structure and finally be set. 51 00:03:22,790 --> 00:03:29,350 So these addresses were not a member of a config structure, so we could just access the basically stronger 52 00:03:29,360 --> 00:03:30,950 from the config structure itself. 53 00:03:30,980 --> 00:03:31,180 Right. 54 00:03:31,220 --> 00:03:35,240 So this new function will perform an initialization offered UPI. 55 00:03:35,420 --> 00:03:39,530 The next step is to check whether initialization is successful or not. 56 00:03:39,750 --> 00:03:45,620 Save status is equal to existing success rate in that case. 57 00:03:46,640 --> 00:03:47,870 The Proceed. 58 00:03:48,380 --> 00:03:52,160 OK, I mentioned GPIO in its success. 59 00:03:52,670 --> 00:03:55,700 This makes it and else we could just add. 60 00:03:56,820 --> 00:03:58,160 Keep you in it. 61 00:03:58,450 --> 00:03:58,950 We right? 62 00:04:00,300 --> 00:04:06,590 So whenever you are working with an interest to try to perform a configuration in any function set, 63 00:04:06,610 --> 00:04:11,460 right, so we know that you are working with the GPI and we want to utilize the switch, right? 64 00:04:11,460 --> 00:04:18,400 So the switch behave as an input put for so the configuration of output as an input should be done in 65 00:04:18,780 --> 00:04:20,190 init function itself, right? 66 00:04:20,430 --> 00:04:24,000 So that allow us to keep the algorithm often. 67 00:04:24,930 --> 00:04:32,130 Interrupt and then initialization separate, right, so all the initialization step, including configuration 68 00:04:32,130 --> 00:04:38,190 of different operations, setting up the direction, performing an initialization should be done in 69 00:04:38,190 --> 00:04:39,160 a single function. 70 00:04:39,200 --> 00:04:44,310 OK, whenever you are working with the complex applications or finding out specific. 71 00:04:45,350 --> 00:04:46,700 Bug becomes very easy. 72 00:04:47,010 --> 00:04:48,970 So this is what we got to do here. 73 00:04:49,290 --> 00:04:57,530 Now here we know that we want to utilize the bin as an input, so we go ahead and we set up the direction. 74 00:04:57,530 --> 00:05:00,500 All right, so we have a function to do that. 75 00:05:01,930 --> 00:05:06,310 OK, so safety direction can be used to set up the direction for. 76 00:05:07,900 --> 00:05:14,010 The specified rate, so we need to pass a it per child in the direction, right? 77 00:05:14,350 --> 00:05:15,100 And we knew that. 78 00:05:16,560 --> 00:05:21,960 For setting up the billions and output we need to actually look for setting pennies and input, we need 79 00:05:21,960 --> 00:05:23,940 to add what rates already just go ahead. 80 00:05:25,080 --> 00:05:31,970 Call this function right here, we need to add GPI, which is that instant structure we are utilizing 81 00:05:31,980 --> 00:05:32,760 a single it. 82 00:05:33,030 --> 00:05:35,580 And we want to utilize force, which is right. 83 00:05:35,580 --> 00:05:36,630 So we just need to add. 84 00:05:37,940 --> 00:05:38,600 Airport. 85 00:05:38,840 --> 00:05:39,120 Right? 86 00:05:39,140 --> 00:05:45,500 So if that basically is equally valid, you for one right and lets you set a better one. 87 00:05:45,800 --> 00:05:48,800 This will configure that plane as it input, right? 88 00:05:49,130 --> 00:05:52,070 So here we set up the direction of our. 89 00:05:53,160 --> 00:05:55,350 Peanuts, which is an input direction. 90 00:05:55,390 --> 00:06:02,400 Now here, one thing that is pending is you just need to add in, right, because this function return 91 00:06:02,400 --> 00:06:03,060 an intel. 92 00:06:03,220 --> 00:06:06,600 OK, so that be storing A.D.A. very well, that will be verified. 93 00:06:06,850 --> 00:06:07,800 So remember this thing. 94 00:06:08,100 --> 00:06:11,700 If you are working with a paper line, you are building a complex application. 95 00:06:11,700 --> 00:06:17,100 See that you incorporate all the configuration settings in that single function. 96 00:06:17,460 --> 00:06:17,590 Right. 97 00:06:17,670 --> 00:06:20,520 So this completes and initialization off UPI.