1 00:00:00,640 --> 00:00:02,210 Hello, welcome back. 2 00:00:02,590 --> 00:00:09,520 In this lesson, we go in to see how to work with Q sets of going ahead to create a new project here 3 00:00:09,520 --> 00:00:12,250 called Number 17 Work in which Q sits. 4 00:00:12,940 --> 00:00:14,860 And this is an empty project. 5 00:00:14,860 --> 00:00:17,530 It's got no free Artus so far. 6 00:00:17,830 --> 00:00:19,720 I've cleaned all the free AHTO stuff. 7 00:00:20,050 --> 00:00:27,160 All we have here is our Jhpiego, you alternate system clock in it and the our respective functions. 8 00:00:27,430 --> 00:00:29,470 OK, so we're going to build it from scratch. 9 00:00:30,580 --> 00:00:31,780 So let's start off. 10 00:00:31,780 --> 00:00:37,720 We're going to have to Kyuss and we're going to add these two cubes to a single sets and we're going 11 00:00:37,720 --> 00:00:44,230 to see how our tasks will be able to receive and send using this new architecture of Q sets. 12 00:00:44,680 --> 00:00:50,170 So I'm going to start off by declaring two Qs, Q1 and Q2 like this. 13 00:00:50,680 --> 00:00:57,550 So I've declared to Qs over here, Q1 of initialize it to now like you to know, and then we're going 14 00:00:57,550 --> 00:00:59,620 to declare a single kupets. 15 00:01:01,370 --> 00:01:02,600 OK, like this. 16 00:01:04,330 --> 00:01:04,790 OK. 17 00:01:05,750 --> 00:01:14,420 So we have to kutya Q1 and Q2 and one, cuz it's cuz it's before we proceed, we would have to go to 18 00:01:14,420 --> 00:01:19,120 our three Arktos config, not each file to enable Khoosat to be able to use it. 19 00:01:19,790 --> 00:01:21,800 So I'm going to come over here. 20 00:01:22,300 --> 00:01:23,780 Our include foda. 21 00:01:24,740 --> 00:01:28,580 And then free artist config dot h, I'll double click this. 22 00:01:31,010 --> 00:01:34,640 And then it's open and I'm going to scroll down to find cuz it's. 23 00:01:37,020 --> 00:01:40,460 If CUSA doesn't exist here, we would have to type it ourselves. 24 00:01:42,450 --> 00:01:46,260 I can do control of who don't control and press F. 25 00:01:47,040 --> 00:01:48,030 And then search. 26 00:01:50,210 --> 00:01:51,260 Q sets. 27 00:01:52,340 --> 00:01:57,810 Well, it just keeps so we have you over here, another queue and then another queue. 28 00:01:58,070 --> 00:01:59,000 There is no queues. 29 00:01:59,000 --> 00:02:01,160 It's so we have to define it. 30 00:02:01,160 --> 00:02:03,110 We have to type this bit ourself. 31 00:02:06,190 --> 00:02:13,360 So close this and I'll come up over here to the top of the fall and over here, I'm simply where I have 32 00:02:13,360 --> 00:02:16,450 this, I'm simply going to add a new one. 33 00:02:18,420 --> 00:02:22,380 Config use underscore, it's so you type this. 34 00:02:24,260 --> 00:02:32,680 OK, so now cusa to be available and then control hesta safe and then may not see you over here so as 35 00:02:32,690 --> 00:02:33,990 to save may not see us. 36 00:02:34,010 --> 00:02:34,310 Well. 37 00:02:35,320 --> 00:02:39,160 Now we can proceed with created to accuse one Clouzot's. 38 00:02:40,570 --> 00:02:48,130 Now, in our main function, we go into we've declared the hunt for the Qs, sorry, if not created. 39 00:02:48,790 --> 00:02:50,470 Now we're going to create the Qs. 40 00:02:51,740 --> 00:02:54,140 So we're going to create Q1 and Q2. 41 00:02:56,540 --> 00:03:04,730 OK, so we've created two cues, each sense a character pointer and key, one offense, execute, create 42 00:03:05,420 --> 00:03:11,570 one size of character pointer and then cue to also the same thing. 43 00:03:12,290 --> 00:03:18,650 OK, so now we're going to add these cues to the cues using the execute function. 44 00:03:21,660 --> 00:03:29,070 It's as simple as excuse, could you give the name of the Q and a Q said you want to add it to so we 45 00:03:29,070 --> 00:03:34,170 add one to the Q set that we are two to the Q set as well. 46 00:03:35,080 --> 00:03:38,770 OK, once that is done, we're going to create our tasks. 47 00:03:39,100 --> 00:03:46,930 We're going to have to send the tasks of the same priority of one and then one receive our task with 48 00:03:46,930 --> 00:03:48,430 a higher priority of two. 49 00:03:49,280 --> 00:03:52,120 OK, so I'm going to bring descender tasks. 50 00:03:53,920 --> 00:03:55,390 We have to send a task. 51 00:03:55,960 --> 00:04:02,140 We have sent a task one over here to the stack size is too much. 52 00:04:02,150 --> 00:04:03,880 I'm going to reduce it to one hundred. 53 00:04:05,900 --> 00:04:12,940 OK, so then we have send a task one over here, we're going to create a task function for it's called 54 00:04:12,950 --> 00:04:17,790 we send a task one and then it's got a priority of one over here. 55 00:04:18,110 --> 00:04:22,570 Send a task to priority of one as well, OK? 56 00:04:23,090 --> 00:04:28,130 And we're going to create a receiver task with a higher priority. 57 00:04:31,780 --> 00:04:38,410 We've created a receiver task once that is done, we going to start our scheduler, lest we forget. 58 00:04:40,450 --> 00:04:47,120 We start the show, OK, so then we only have to deal with our task functions. 59 00:04:47,140 --> 00:04:54,880 Now I'm going to create the task function for the first and the task as simple as this V task one, 60 00:04:54,880 --> 00:05:00,640 because that's the name we said we given the send task one task function and we're going to declare 61 00:05:00,640 --> 00:05:02,020 the amount of time to wait. 62 00:05:02,500 --> 00:05:03,550 We're going to say wait. 63 00:05:03,550 --> 00:05:04,570 Four hundred Ms. 64 00:05:07,150 --> 00:05:12,450 We're going to see, OK, this the amount of time you should block with four hundred Ms. 65 00:05:19,540 --> 00:05:25,030 And we're going to define the data to say and remember, we said our cue is going to be send in character 66 00:05:25,030 --> 00:05:25,560 pointers. 67 00:05:26,140 --> 00:05:32,410 So we're going to say, OK, send MSG, MSG message from V. Task one. 68 00:05:32,980 --> 00:05:33,550 OK. 69 00:05:35,650 --> 00:05:39,700 Once that is done, we going to open our infinite loop over here. 70 00:05:44,470 --> 00:05:52,080 And we're going to see wait for them is by putting it in the blog states four hundred Ms. 71 00:05:53,160 --> 00:05:54,720 So we're going to save TASC. 72 00:05:57,870 --> 00:06:03,960 V. Task DeLay, one hundred M is OK, and then once that is done, we're going to send it. 73 00:06:05,930 --> 00:06:15,260 So we're going to send our MSgt to one like this Kyuss and we send into Q1 address of MSgt, we put 74 00:06:15,260 --> 00:06:23,050 zero here, OK, for the takeaway timeout, OK, once that is done, we going to copy this. 75 00:06:23,810 --> 00:06:28,430 This is V tasc one and then paste it over here to get V task to. 76 00:06:30,090 --> 00:06:35,940 Over here and over here, the message is going to be message from send a task to and I'm going to make 77 00:06:35,940 --> 00:06:37,740 this one wait for two hundred Ms. 78 00:06:38,800 --> 00:06:39,360 OK. 79 00:06:42,870 --> 00:06:50,010 And over here, we send in this information to task to Q2, sorry, OK, so, so far so good. 80 00:06:50,010 --> 00:06:55,750 We are using just cuz we've not written anything with regards to Cusato yet. 81 00:06:56,520 --> 00:07:03,380 OK, so it's in the receiver task that we find the the use and the benefit of the queue sits. 82 00:07:03,780 --> 00:07:08,490 We're going to come down here to create the task function for our receiver task. 83 00:07:12,820 --> 00:07:23,440 We first start off by declaring a Q variable to hold the the AQ Hondo variable, because what is going 84 00:07:23,440 --> 00:07:28,890 to happen is our Q set is going to return the handle of the Q that has new data. 85 00:07:29,290 --> 00:07:30,790 So we need to store it somewhere. 86 00:07:30,790 --> 00:07:39,190 We declare this excuse that contains data as the name of the variable to hold the Q and then we're going 87 00:07:39,190 --> 00:07:48,910 to have a character pointer as well for the data because our Qs data type is character pointer. 88 00:07:49,510 --> 00:07:55,330 OK, so then we're going to open our infinite loop over here, I'll say. 89 00:07:55,330 --> 00:07:58,300 Well one open and close. 90 00:07:59,180 --> 00:08:05,930 And then we're going to use the function excuse selects from set, then we pass the cue sets and then 91 00:08:06,200 --> 00:08:07,790 we delete infinitely. 92 00:08:09,310 --> 00:08:12,030 OK, so we see excuse. 93 00:08:13,350 --> 00:08:15,030 Select from set and then. 94 00:08:15,920 --> 00:08:20,360 This function were returned, accuses the House, new data and storage in a. 95 00:08:21,960 --> 00:08:24,150 Khuda content states are variable here. 96 00:08:26,150 --> 00:08:26,660 OK. 97 00:08:28,260 --> 00:08:29,430 Or minimize this. 98 00:08:29,610 --> 00:08:30,140 OK. 99 00:08:33,910 --> 00:08:38,410 So we are blocking here indefinitely until they're secured data. 100 00:08:38,500 --> 00:08:44,920 So that's why we're using Portsmouth's delay here, we blocking for an infinite amount of time, essentially 101 00:08:45,340 --> 00:08:46,200 maximum delay. 102 00:08:47,050 --> 00:08:53,350 And then when there is data, when Cuba's new data then is going to be returned and stored in our variable 103 00:08:53,350 --> 00:08:53,680 here. 104 00:08:54,250 --> 00:09:02,010 OK, so now that we have the handle of the KHUDA has new data, then we can use our Q API to receive. 105 00:09:02,290 --> 00:09:10,990 So we use our curacy function excusive function and we simply pass the handle of the Q that we want 106 00:09:10,990 --> 00:09:14,380 to receive from and then we store it over here. 107 00:09:15,640 --> 00:09:16,210 OK. 108 00:09:18,350 --> 00:09:22,250 And once that is done, we can print the results. 109 00:09:22,770 --> 00:09:24,080 I can simply say printf. 110 00:09:26,910 --> 00:09:27,990 The content of this. 111 00:09:29,470 --> 00:09:31,060 OK, like this. 112 00:09:33,200 --> 00:09:39,800 So that is it, so that's the essential part our accused use uses excuse select from set. 113 00:09:40,340 --> 00:09:47,180 You pass the cue set on those arguments and take wait time, OK? 114 00:09:47,190 --> 00:09:54,290 And then this function is going to get stuck here or is going to wait here until there is a queue in 115 00:09:54,290 --> 00:09:56,050 the queue sets that has new data. 116 00:09:56,270 --> 00:10:02,210 When that happens, the handle of that queue is going to be returned and stored in our variable and 117 00:10:02,210 --> 00:10:03,530 we're going to use the handle. 118 00:10:05,020 --> 00:10:08,980 I commend to our curacy function to receive data from its. 119 00:10:09,890 --> 00:10:12,560 OK, so all we have to do. 120 00:10:13,450 --> 00:10:19,600 Descender function, prototypes of our task functions to the top over here. 121 00:10:22,120 --> 00:10:29,890 This is the one for senator, one task and then send to we need the last one for the receiver to ask. 122 00:10:31,370 --> 00:10:34,450 Grab this over here, put this over here. 123 00:10:37,680 --> 00:10:43,560 OK, so we're looking good, no, let's build and see what we have. 124 00:10:44,870 --> 00:10:46,730 I'm going to explain this. 125 00:10:47,950 --> 00:10:53,140 And then I'm going to right click over here, I'll see Build Project. 126 00:10:54,420 --> 00:10:55,080 Like this. 127 00:10:56,540 --> 00:10:59,660 And then I'll explain this a bit so that we can see the progress. 128 00:11:01,540 --> 00:11:03,790 It says it's built successfully. 129 00:11:04,900 --> 00:11:13,440 OK, I'm going to right click and then I'll say run us ASTM 30 to Coatex and I'll select 17 over here. 130 00:11:13,480 --> 00:11:15,700 I'll double click on 17 click. 131 00:11:15,700 --> 00:11:16,840 OK, over here. 132 00:11:21,290 --> 00:11:23,060 And it's flashing onto the board. 133 00:11:24,060 --> 00:11:26,120 I see we still have real time here. 134 00:11:27,280 --> 00:11:32,080 This is from our previous project, I'm going to clear this, I'm going to open the port. 135 00:11:34,670 --> 00:11:40,360 I'm going to press the reset to my board to see real time, it's not opening. 136 00:11:40,670 --> 00:11:41,180 Let's see. 137 00:11:42,450 --> 00:11:45,750 The last time we had that, there was an anomaly in the code. 138 00:11:46,860 --> 00:11:49,190 Let's see if we have similar issues. 139 00:11:50,170 --> 00:11:53,370 I don't think we have any such issues today. 140 00:11:56,730 --> 00:12:03,720 So let's inspect our code to see where we may have anomalies, so we started off over here by creating 141 00:12:03,720 --> 00:12:04,590 two Qs. 142 00:12:06,040 --> 00:12:13,310 And storing them in their handles and then we added these two accused to our Cusato known as Cusato, 143 00:12:13,320 --> 00:12:14,290 whose handle this year. 144 00:12:15,070 --> 00:12:20,440 OK, the issue is we didn't agree to discuss it, so we just declared its Hondo. 145 00:12:20,440 --> 00:12:21,370 We've not created it. 146 00:12:22,120 --> 00:12:22,560 Right. 147 00:12:23,380 --> 00:12:25,600 So we have to create accuses. 148 00:12:26,440 --> 00:12:33,070 I'll come over here and we just use the excuse to create set function. 149 00:12:34,240 --> 00:12:37,270 To critics, it's like this, OK? 150 00:12:38,760 --> 00:12:43,140 So this Cusato is going to hold to Kyuss HQ has a single element. 151 00:12:44,870 --> 00:12:51,980 OK, also, one other thing we're going to do is I'm going to be printing something here so that whenever 152 00:12:51,980 --> 00:12:54,350 we have an issue, a list. 153 00:12:55,970 --> 00:13:02,840 We can eliminate the cause being that you add to our print system initializing whenever we start. 154 00:13:06,060 --> 00:13:10,110 So that when we see this get printed, we know this, that you are just fine. 155 00:13:10,540 --> 00:13:17,190 OK, so we're looking good and then yeah, the stock size looks fine. 156 00:13:17,880 --> 00:13:22,710 When I scroll down here and over here, we can simplify it. 157 00:13:23,700 --> 00:13:24,660 We need not. 158 00:13:26,330 --> 00:13:29,090 We can just see a character pointer should be fine. 159 00:13:33,230 --> 00:13:36,320 This is in to we do the same for task one. 160 00:13:39,770 --> 00:13:50,760 OK, and then over here in print, if I'm going to see percentages, when you give the specify a percentages, 161 00:13:51,470 --> 00:13:52,760 print this string. 162 00:13:53,330 --> 00:13:54,560 Yeah, this string could. 163 00:13:54,570 --> 00:13:54,960 Yes, here. 164 00:13:55,190 --> 00:13:58,240 OK, let's see whether this will get us running. 165 00:13:58,610 --> 00:13:59,960 I'll click over here to build. 166 00:14:06,280 --> 00:14:07,480 It's built successfully. 167 00:14:09,080 --> 00:14:10,640 All right, click over here. 168 00:14:12,100 --> 00:14:13,720 Run us SDM 30 to. 169 00:14:14,840 --> 00:14:16,940 Double click number 17 over here. 170 00:14:20,600 --> 00:14:22,250 It's downloading onto the board. 171 00:14:29,580 --> 00:14:32,430 It's finished downloading, I'm going to open real to. 172 00:14:35,550 --> 00:14:37,300 OK, you know, we have real time. 173 00:14:37,320 --> 00:14:43,630 I'm going to clear, as can see, a message from V Task one V. Task to oppose. 174 00:14:44,430 --> 00:14:45,210 So we have. 175 00:14:46,430 --> 00:14:53,420 Send a task to send a task, one task, one task to task, one task, one task to the reason why we 176 00:14:53,420 --> 00:15:00,590 have task one more than task to of course, you would realize that we put in one of the senders for 177 00:15:00,590 --> 00:15:02,240 a longer time in the blocked state. 178 00:15:03,220 --> 00:15:08,830 Task to entice block states for two hundred Emmis, whereas task one enters for one hundred. 179 00:15:09,490 --> 00:15:11,880 So that is why Task one is having more time. 180 00:15:12,160 --> 00:15:15,090 That's why I want to send in more than task, too. 181 00:15:15,550 --> 00:15:17,670 But this is a this is how to use it. 182 00:15:17,890 --> 00:15:24,730 So whichever has new data to use, it will return the handle of the queue and then we can use the handle 183 00:15:24,730 --> 00:15:28,390 to receive from the Q and use the data as we wish. 184 00:15:28,870 --> 00:15:33,160 So this or the risk for this lesson, if you have any questions, leave them in the questions analysis 185 00:15:33,160 --> 00:15:35,080 area and I shall see you later. 186 00:15:35,180 --> 00:15:35,920 Have a nice the.