1 00:00:00,970 --> 00:00:01,270 Hello. 2 00:00:01,590 --> 00:00:02,080 Welcome back. 3 00:00:02,680 --> 00:00:05,200 So, um, let's continue where we left off. 4 00:00:06,280 --> 00:00:09,580 Now let's analyze our free Archos config dot h file. 5 00:00:09,790 --> 00:00:13,020 Because if you want to change the, um, the settings of the kernel. 6 00:00:13,120 --> 00:00:14,170 This is why you do it. 7 00:00:14,590 --> 00:00:15,460 So double click here. 8 00:00:15,500 --> 00:00:17,320 Free Archos config dot h. 9 00:00:18,060 --> 00:00:23,830 And over here, this is where we decide to use various aspects of the kernel. 10 00:00:24,040 --> 00:00:26,290 It says over here, config use preemption. 11 00:00:27,100 --> 00:00:27,790 One means. 12 00:00:28,690 --> 00:00:29,230 Use it. 13 00:00:29,500 --> 00:00:32,320 Zero means force meaning do not use it. 14 00:00:32,660 --> 00:00:35,140 So we want to use preemption set to one. 15 00:00:35,950 --> 00:00:38,230 We want to support static allocation. 16 00:00:38,260 --> 00:00:41,440 This is a two one dynamic allocation is set to one. 17 00:00:42,340 --> 00:00:43,490 We don't want to use either. 18 00:00:43,690 --> 00:00:44,860 Hook is set to zero. 19 00:00:44,890 --> 00:00:47,020 We don't want to use take hook is set to zero. 20 00:00:47,620 --> 00:00:53,200 So if you want to know more about these parameters, I would advise you to free up to, um, to take 21 00:00:53,200 --> 00:00:54,150 a look at the, um. 22 00:00:54,610 --> 00:00:56,260 To take a look at my other. 23 00:00:56,890 --> 00:00:59,140 Free ATA's on, um, process source. 24 00:00:59,560 --> 00:01:00,310 From ground up. 25 00:01:01,000 --> 00:01:02,280 Um, most um. 26 00:01:02,590 --> 00:01:02,830 Oh. 27 00:01:02,890 --> 00:01:08,920 If you're already seeing the free Artus for uh for um process source then you'd already know this. 28 00:01:09,610 --> 00:01:16,510 The reason I'm saying this is that in free ATA's on um processors from ground up we use the call I d 29 00:01:16,570 --> 00:01:24,250 e and this lesson might be included in that same course to show people how to use free ARTUS with Cuba 30 00:01:24,260 --> 00:01:24,860 mix in Cuba. 31 00:01:25,210 --> 00:01:29,560 So if you are viewing free arter from, um, processors from ground up, you already know these. 32 00:01:29,890 --> 00:01:34,750 But if you're not you, your view and just kinda makes ASTM to Cuba mix. 33 00:01:34,900 --> 00:01:39,940 Cause then you wouldn't know the meaning of these parameters and you could check that other course out 34 00:01:40,000 --> 00:01:43,540 or you could just um search the free ARTUS, uh, manual. 35 00:01:44,670 --> 00:01:44,970 Okay. 36 00:01:45,070 --> 00:01:47,020 So these are where all parameters are. 37 00:01:47,710 --> 00:01:49,880 So if I want to use something, we set it here. 38 00:01:49,930 --> 00:01:52,290 If we do not, we set it off. 39 00:01:52,300 --> 00:01:58,180 We turn it on and off in this file config use mutex because we are using mbewe text is set to one if 40 00:01:58,180 --> 00:01:59,590 we were going to be set to zero. 41 00:02:00,010 --> 00:02:01,600 We're not using the sixteen bits tick's. 42 00:02:01,780 --> 00:02:04,890 So it is set to zero maximum number of priorities. 43 00:02:04,990 --> 00:02:05,500 Seven. 44 00:02:06,370 --> 00:02:10,550 The take rate is to 1000 hertz the clock. 45 00:02:10,570 --> 00:02:12,360 Hertz is using system clock. 46 00:02:13,400 --> 00:02:14,010 When I use it I. 47 00:02:14,080 --> 00:02:14,810 I do hook. 48 00:02:16,360 --> 00:02:22,030 And when we come down here we use using our cystic as the time base for our ARTUS. 49 00:02:22,120 --> 00:02:23,110 Like I mentioned earlier. 50 00:02:23,980 --> 00:02:24,450 So yeah. 51 00:02:25,120 --> 00:02:27,100 So let's move on with our Y experiment. 52 00:02:27,190 --> 00:02:28,790 I'll come back to the main dot CFR. 53 00:02:30,520 --> 00:02:35,190 So now, um, we have our system work in a round robin harbor. 54 00:02:35,260 --> 00:02:36,810 We talk about LTE. 55 00:02:37,190 --> 00:02:38,350 We're going to use our thread. 56 00:02:38,440 --> 00:02:41,140 Want to talk it with reality so we can go to the thread. 57 00:02:41,140 --> 00:02:42,360 Function off the one. 58 00:02:43,480 --> 00:02:46,300 And at the ality Togo code over there. 59 00:02:47,060 --> 00:02:48,010 This is the red one. 60 00:02:48,310 --> 00:02:50,590 We have the pre uh, we have the profile. 61 00:02:50,680 --> 00:02:52,030 We can comment this out. 62 00:02:52,510 --> 00:02:54,010 The profile is good for debugging. 63 00:02:54,040 --> 00:02:58,220 We only turn it on when we want to see how things y a threat is not working. 64 00:02:58,240 --> 00:03:02,920 The first thing you do is you profile it to see if it's change and meaning the threat is executing. 65 00:03:04,000 --> 00:03:04,300 Right. 66 00:03:04,330 --> 00:03:11,440 So I'm going to comment out of profilers and bring back the the delay it I was in the thread function 67 00:03:11,500 --> 00:03:13,270 when it was first created for us. 68 00:03:17,120 --> 00:03:19,140 Okay, common desalt also. 69 00:03:20,860 --> 00:03:23,760 So the third one, this was thread function one. 70 00:03:23,780 --> 00:03:30,240 I'm going to start off by talking in our early deoxy hall on the score cheapie I oh, on the score, 71 00:03:32,440 --> 00:03:35,510 Torgau Pain and our early DP five. 72 00:03:35,550 --> 00:03:36,800 So CGP are you a 73 00:03:39,590 --> 00:03:46,820 comma qpr you g.p.a. you on this score pain underscore five like this. 74 00:03:49,810 --> 00:03:52,310 We can also send some um some data from here. 75 00:03:52,340 --> 00:03:55,070 We can um tell you what I'll say. 76 00:03:55,640 --> 00:04:04,670 You ain't eight, you ain't eight on the score t and then I'll call this message and then I'll give 77 00:04:04,670 --> 00:04:16,400 it a size of let's say twenty five and then I'll see maybe greetings from third one. 78 00:04:16,550 --> 00:04:17,270 Something like that. 79 00:04:18,050 --> 00:04:20,300 I'll put new line encourage return here. 80 00:04:20,540 --> 00:04:30,130 Oh increase this to thirty five and then semicolon over here so we can transmit this using our you ut. 81 00:04:30,860 --> 00:04:42,590 So now we simply see how an escort you out on the score transmit and then you are Tando the address 82 00:04:42,680 --> 00:04:48,110 h you two and then the pa voice quote message 83 00:04:50,830 --> 00:04:57,290 the prophesies to get an actual size we can count one, two, three, four, five, six, seven, eight, 84 00:04:57,320 --> 00:04:58,200 nine, ten. 85 00:04:58,910 --> 00:05:04,130 Okay I'll just put thirty five to thirty five and then we can put a time out of one. 86 00:05:04,370 --> 00:05:04,760 Okay. 87 00:05:06,120 --> 00:05:07,670 Cause we've declared thirty five. 88 00:05:07,770 --> 00:05:13,790 It might be bigger than that, although we could include the string dot h and be able to automatically 89 00:05:13,790 --> 00:05:15,350 compute the size of the buffer. 90 00:05:16,380 --> 00:05:17,930 Uh I'll leave that to you. 91 00:05:20,030 --> 00:05:21,480 And uh um one M. 92 00:05:21,480 --> 00:05:22,820 S delays too late too. 93 00:05:22,850 --> 00:05:24,170 So I'm going to increase this a bit. 94 00:05:25,130 --> 00:05:26,750 Once this is done, I'll build. 95 00:05:34,280 --> 00:05:37,290 And I'm going to turn it on to the board by clicking over here debug. 96 00:05:45,390 --> 00:05:47,830 And I'm going to open up terror term. 97 00:05:48,140 --> 00:05:52,390 Zero program to see what a I can view the data. 98 00:05:52,730 --> 00:05:53,650 It's like this. 99 00:05:54,820 --> 00:05:55,330 This is it. 100 00:05:56,020 --> 00:05:57,960 And then you orthopod rate the default. 101 00:05:58,000 --> 00:05:58,780 But wait, what are you. 102 00:05:58,780 --> 00:06:01,540 What is it? 103 00:06:01,600 --> 00:06:04,150 One hundred and fifteen thousand two hundred. 104 00:06:04,720 --> 00:06:06,780 Okay, then, um. 105 00:06:08,250 --> 00:06:10,100 I'm gonna click play over here. 106 00:06:13,240 --> 00:06:19,440 So we have greetings from threat one, the reason it's behaving like this. 107 00:06:21,360 --> 00:06:24,540 It's because of our courage, return with courage, return is not. 108 00:06:28,410 --> 00:06:28,890 Let's see, 109 00:06:32,580 --> 00:06:34,230 I've reset my board. 110 00:06:34,530 --> 00:06:37,310 Let me see the same way, okay. 111 00:06:41,530 --> 00:06:46,170 OK, I'm going to change this, then this. 112 00:06:46,720 --> 00:06:50,250 We have 24 characters in our cities, two to enforce. 113 00:06:50,300 --> 00:06:52,270 Well, I'm going to click here to build. 114 00:06:56,270 --> 00:06:58,580 It's important that we get it to right? 115 00:06:58,940 --> 00:07:05,330 Perfectly so that when it jumbo's up, we can know that it's jumbled up because I want to demonstrate 116 00:07:05,360 --> 00:07:11,090 what happens when we are trying to use to threats to access the same resource. 117 00:07:12,530 --> 00:07:16,130 So we need this to one to show how it's working in it. 118 00:07:16,760 --> 00:07:18,080 Good work and condition. 119 00:07:18,590 --> 00:07:25,310 And then when it starts jumbling up text and we no doubt it is not the way it should work in a way. 120 00:07:25,340 --> 00:07:26,390 You would see what I mean. 121 00:07:28,620 --> 00:07:28,990 OK. 122 00:07:29,480 --> 00:07:30,900 So click here to run this. 123 00:07:30,960 --> 00:07:34,730 Do I have to return open Tobin? 124 00:07:39,080 --> 00:07:39,550 Lucy. 125 00:07:49,320 --> 00:07:54,710 You know, I escape from this, then I'm out of the Dybbuk. 126 00:07:54,830 --> 00:07:55,490 Of course, we don't need. 127 00:07:55,560 --> 00:07:58,790 We just need to flush it to our board once I'm out. 128 00:07:58,910 --> 00:08:00,770 I'm going to press to reset my board. 129 00:08:09,990 --> 00:08:10,860 It's strange. 130 00:08:11,940 --> 00:08:15,060 I'm going to start to reteam again because it's misbehaving. 131 00:08:19,930 --> 00:08:20,410 This is it. 132 00:08:20,950 --> 00:08:21,880 This over here. 133 00:08:23,680 --> 00:08:25,150 And then zero port. 134 00:08:26,290 --> 00:08:29,720 One hundred and fifteen thousand two hundred, OK. 135 00:08:30,220 --> 00:08:30,850 Like this. 136 00:08:32,240 --> 00:08:35,740 They reset board is giving us. 137 00:08:52,340 --> 00:08:54,200 So let's increase the time out a bit. 138 00:08:54,260 --> 00:08:56,450 I'm going to increase it over here to ten. 139 00:08:57,200 --> 00:08:57,710 Okay. 140 00:08:57,980 --> 00:08:58,820 This is the same. 141 00:08:58,820 --> 00:09:02,900 We have our courage return a new line when I click here to build. 142 00:09:10,490 --> 00:09:11,720 It's built successfully. 143 00:09:12,050 --> 00:09:13,570 Click here to get onto the board. 144 00:09:25,330 --> 00:09:29,790 Okay, it's downloaded a quick here. 145 00:09:30,670 --> 00:09:37,690 It's still working this way, too, but I can escape this by simply coming out since it's already on 146 00:09:37,690 --> 00:09:38,200 the board. 147 00:09:38,380 --> 00:09:40,060 No, I can go to to. 148 00:09:42,390 --> 00:09:43,260 And take a look at it. 149 00:09:43,680 --> 00:09:44,520 Come over here. 150 00:09:45,990 --> 00:09:51,300 This is the port and then select the portrait. 151 00:09:53,090 --> 00:09:54,760 Over here like this and then. 152 00:09:54,870 --> 00:09:55,280 Okay. 153 00:09:57,720 --> 00:09:58,780 And this is what we have. 154 00:09:59,350 --> 00:10:05,560 It's a peer, not a one second rate, and my ality is totally at a one second rate as well because we 155 00:10:05,560 --> 00:10:06,520 are talking in reality. 156 00:10:07,000 --> 00:10:07,540 So this is it. 157 00:10:07,600 --> 00:10:10,630 We are sending this this message to the U. 158 00:10:10,720 --> 00:10:10,840 S. 159 00:10:11,020 --> 00:10:11,980 From our threat one. 160 00:10:13,540 --> 00:10:13,960 Right. 161 00:10:14,050 --> 00:10:18,060 Moving on, no less. 162 00:10:18,790 --> 00:10:25,510 Interact with threat to what we're going to do in threat to check if the button is pressed and if that 163 00:10:25,510 --> 00:10:25,870 is price. 164 00:10:25,880 --> 00:10:29,910 We want to send you a greeting from threat to us. 165 00:10:29,950 --> 00:10:32,260 Well, so come over here. 166 00:10:34,390 --> 00:10:40,120 This is a threat function to what I'm gonna do is check if the push button is pressed. 167 00:10:40,840 --> 00:10:45,370 We can see how on this call we want to use that GPL. 168 00:10:45,370 --> 00:10:50,650 You read Peine, GPL, you underscore read. 169 00:10:51,370 --> 00:10:56,650 And then this one takes the port and then a PIN number GPL. 170 00:10:56,650 --> 00:11:00,070 You print 13 because it's P.c 13. 171 00:11:03,840 --> 00:11:11,990 And we want to check if this is reset, meaning, uh, this push button is active, low by default, 172 00:11:12,020 --> 00:11:12,650 it is high. 173 00:11:12,710 --> 00:11:15,040 When you press it to activate it, it becomes law. 174 00:11:15,470 --> 00:11:24,350 You want to check if it's Lowe's, which upl you opinion on this call reset like this. 175 00:11:26,120 --> 00:11:28,540 This is surrounded by an if 176 00:11:31,920 --> 00:11:38,780 if this is reset, then we want to send a message and the message can be similar to the one we sent. 177 00:11:39,290 --> 00:11:42,500 So just come over here and copy this. 178 00:11:45,710 --> 00:11:50,760 And then push this in here and then I'm going to copy this. 179 00:11:50,780 --> 00:11:57,440 This message we have here and then I'll pasted up here and I'll just change the number one to two. 180 00:11:59,180 --> 00:12:04,730 So this creten from third to like this. 181 00:12:07,010 --> 00:12:11,990 And just like, well, we have in thread one, I'm going to set it Dilli here to 1000 as well. 182 00:12:13,530 --> 00:12:13,900 Right. 183 00:12:14,340 --> 00:12:15,560 So I'm going to click here to build. 184 00:12:22,740 --> 00:12:23,880 It's built successfully. 185 00:12:25,150 --> 00:12:27,310 I'll get it onto the board by clicking over here. 186 00:12:39,230 --> 00:12:39,750 Okay. 187 00:12:45,150 --> 00:12:46,660 It's downloaded onto the board. 188 00:12:46,720 --> 00:12:49,590 I'm simply going to escape this and go to Terra to 189 00:12:52,300 --> 00:12:53,560 click over here to open. 190 00:12:56,050 --> 00:12:59,050 Over here, then. 191 00:12:59,740 --> 00:13:00,340 Okay. 192 00:13:00,730 --> 00:13:04,480 And then I'm going to set the ball straight through a port. 193 00:13:07,270 --> 00:13:10,380 This is all board rates and I'm going to press to reset my board. 194 00:13:14,440 --> 00:13:14,580 OK. 195 00:13:14,660 --> 00:13:15,850 The boathouse where we sit. 196 00:13:16,810 --> 00:13:18,490 So I've not pressed a button yet. 197 00:13:18,520 --> 00:13:20,980 So we just get in hello from threat one. 198 00:13:22,120 --> 00:13:25,180 So I'm gonna press the button and we have. 199 00:13:25,210 --> 00:13:25,480 Hello. 200 00:13:25,480 --> 00:13:26,320 From threat to. 201 00:13:26,950 --> 00:13:27,390 Okay. 202 00:13:30,780 --> 00:13:33,220 Sometimes when I press the button, there's a miss. 203 00:13:33,270 --> 00:13:34,290 But we can see it. 204 00:13:35,040 --> 00:13:41,970 Okay, so the reason this is work and thus far and there is no conflict is because we have a significant 205 00:13:41,970 --> 00:13:43,620 amount of delay between the two. 206 00:13:44,590 --> 00:13:47,130 What we're going to do now is reduce the amount of delay. 207 00:13:48,420 --> 00:13:48,880 Let's do that. 208 00:13:48,960 --> 00:13:52,800 See what we get before we reduce the delay. 209 00:13:52,830 --> 00:13:54,220 Before we reduce the delay. 210 00:13:54,240 --> 00:13:58,950 Let's get the two threads to have the same amount of work to do. 211 00:13:59,430 --> 00:14:02,340 What I mean by that is I'm going to comment thread one. 212 00:14:02,490 --> 00:14:06,450 Libby togo out such that they are both doing exactly the same thing. 213 00:14:07,680 --> 00:14:10,320 They just transmitting this. 214 00:14:11,860 --> 00:14:12,270 Right. 215 00:14:13,110 --> 00:14:14,550 They just transmitted the message. 216 00:14:18,060 --> 00:14:20,790 OK, so when I click over here. 217 00:14:27,900 --> 00:14:28,560 It's built in. 218 00:14:29,700 --> 00:14:30,820 It's built successfully. 219 00:14:32,350 --> 00:14:33,110 And then, um. 220 00:14:36,400 --> 00:14:39,160 We get to the debug to get onto a board. 221 00:14:50,790 --> 00:14:53,880 Okay, let's download it. 222 00:14:54,130 --> 00:14:56,850 So I'm going to escape this and then try it manually. 223 00:14:57,940 --> 00:15:00,880 What I mean by my knowledge is actually the was on the board. 224 00:15:00,910 --> 00:15:02,270 So I don't need to be in the debark. 225 00:15:02,340 --> 00:15:03,760 I'm going to click here to stop it. 226 00:15:04,460 --> 00:15:05,680 And then I'm going to. 227 00:15:08,110 --> 00:15:09,810 And then I'm going to go to Terra term. 228 00:15:13,370 --> 00:15:14,270 Click over here. 229 00:15:15,470 --> 00:15:19,970 This is it then set up through a port. 230 00:15:21,500 --> 00:15:23,660 This are bought right then. 231 00:15:23,720 --> 00:15:24,010 OK. 232 00:15:24,140 --> 00:15:24,770 Over here. 233 00:15:27,010 --> 00:15:31,480 OK, I'm going to press the button when I press the button. 234 00:15:31,570 --> 00:15:32,410 We still get it. 235 00:15:33,030 --> 00:15:33,430 OK. 236 00:15:34,730 --> 00:15:36,640 They're doing the same amount of work. 237 00:15:37,840 --> 00:15:44,860 Sometimes when I press the button, I don't get no threat to appear at all cause there's conflict sometimes. 238 00:15:45,640 --> 00:15:45,940 OK. 239 00:15:46,240 --> 00:15:52,510 So next experiment, I'm going to disable the button, then just let him, you know, run on your own. 240 00:15:55,390 --> 00:16:01,660 We just push on it to the part where we realize the system cannot be able to provide us both at the 241 00:16:01,660 --> 00:16:02,290 same time. 242 00:16:03,340 --> 00:16:04,750 So over here we have. 243 00:16:04,870 --> 00:16:07,180 If the button is pressed, transmit the message. 244 00:16:07,710 --> 00:16:16,930 So I'm going to just take this out and then put over here and then comment out this this block of code. 245 00:16:19,340 --> 00:16:20,200 Switch it up. 246 00:16:20,290 --> 00:16:20,820 Are the same. 247 00:16:20,830 --> 00:16:21,110 No. 248 00:16:21,840 --> 00:16:25,150 The red one transmits greetings from threat one. 249 00:16:25,630 --> 00:16:30,000 Always daily this and then through to transmits this was delayed this. 250 00:16:30,530 --> 00:16:30,840 Okay. 251 00:16:31,420 --> 00:16:35,080 This could work as well because that delayed is a huge delay. 252 00:16:35,080 --> 00:16:38,140 One second real time reporting system. 253 00:16:38,520 --> 00:16:41,740 You know, universe is quite a lot of time to wait. 254 00:16:43,000 --> 00:16:43,390 Right. 255 00:16:45,040 --> 00:16:46,270 So it's build successfully. 256 00:16:46,360 --> 00:16:48,070 We click over here to go to the book. 257 00:16:56,840 --> 00:16:57,500 It open in. 258 00:17:04,650 --> 00:17:05,400 It's on our board. 259 00:17:05,550 --> 00:17:07,340 I'm just going to exit. 260 00:17:09,300 --> 00:17:10,610 I'm going to go to terror term. 261 00:17:14,670 --> 00:17:17,510 And then also like this. 262 00:17:20,030 --> 00:17:21,750 And then also like the board rate 263 00:17:25,090 --> 00:17:25,500 then. 264 00:17:25,870 --> 00:17:26,280 Okay. 265 00:17:27,980 --> 00:17:29,750 Gonna click to reset the board. 266 00:17:32,490 --> 00:17:32,880 OK. 267 00:17:33,100 --> 00:17:38,680 So we have the Cretans from thread one, Cretans from thread to greetings from thread to greetings from 268 00:17:38,680 --> 00:17:43,300 thread one, two, one, two, one, two, one. 269 00:17:43,330 --> 00:17:45,810 We're still looking good, right? 270 00:17:45,850 --> 00:17:49,120 So great to reduce the delay amount to 10, Emmis. 271 00:17:58,930 --> 00:17:59,380 OK. 272 00:17:59,580 --> 00:18:00,720 Going to click here to build. 273 00:18:12,020 --> 00:18:12,230 Let's. 274 00:18:13,270 --> 00:18:19,690 Click here to go to debunk, and then I'm going to escape the debacle by clicking here. 275 00:18:23,090 --> 00:18:23,560 OK. 276 00:18:23,850 --> 00:18:26,800 And then to return. 277 00:18:31,120 --> 00:18:32,020 Come over here. 278 00:18:32,740 --> 00:18:37,600 This is how comport then I'm gonna select the board rate. 279 00:18:42,440 --> 00:18:45,890 And then click to reset a board. 280 00:18:46,780 --> 00:18:47,000 OK. 281 00:18:47,060 --> 00:18:49,810 So this where we get to know, we get in gibberish. 282 00:18:51,410 --> 00:18:59,000 This is it, because both of the threads are trying to access the same, um, the same resource at the 283 00:18:59,000 --> 00:18:59,630 same time. 284 00:18:59,750 --> 00:19:03,920 And because of this, there's a coalition and the the hardware, which is the single resource, cannot 285 00:19:03,920 --> 00:19:04,610 handle this. 286 00:19:05,540 --> 00:19:05,840 OK. 287 00:19:06,170 --> 00:19:08,090 To prove that this is what is really happening. 288 00:19:08,120 --> 00:19:12,370 I'm going to comment out thread two and keep thread one. 289 00:19:12,380 --> 00:19:17,000 Send in its message unless you because it could just be that 10 M. 290 00:19:17,000 --> 00:19:20,270 S is too, too little for any threat. 291 00:19:20,720 --> 00:19:22,430 So I'm going to comment on that threat, too. 292 00:19:23,610 --> 00:19:28,070 And let's just see thread one attempt to send with a delay of 10 M. 293 00:19:28,070 --> 00:19:28,370 S. 294 00:19:33,940 --> 00:19:34,590 It's built in. 295 00:19:39,780 --> 00:19:41,490 Click here to get onto the board. 296 00:19:54,260 --> 00:19:55,210 It's downloading. 297 00:19:57,920 --> 00:19:58,360 It's done. 298 00:19:58,400 --> 00:20:05,870 I'm going to click here to escape and then I'll go to terror turn by clicking over here. 299 00:20:09,630 --> 00:20:11,970 Then I select my port. 300 00:20:15,190 --> 00:20:17,830 Then I'll change the board rate by coming over here. 301 00:20:24,780 --> 00:20:28,040 She can see through it, one is working on its own with 10 M. 302 00:20:28,040 --> 00:20:28,630 S delay. 303 00:20:29,080 --> 00:20:36,760 So the problem was we had two threads trying to access the same resource at almost the same time. 304 00:20:37,330 --> 00:20:45,340 And if we had some delay, which is 10 Imus and 10 Imus in real, uh, in our toast time in our total 305 00:20:45,340 --> 00:20:46,670 universe, that's a lot of time. 306 00:20:47,350 --> 00:20:52,480 But that's the quittin allowed the, um, the two different threads to access the same resource. 307 00:20:52,920 --> 00:20:56,710 So we solve this problem using Ammu ticks the music we created earlier. 308 00:20:57,460 --> 00:20:57,880 Right. 309 00:20:58,210 --> 00:21:06,040 So I'm going to enable the message from thread to again, cause we can use, you know, with the aid 310 00:21:06,040 --> 00:21:10,060 of the mute ticks or just do controversy over hand and controversy over here. 311 00:21:11,410 --> 00:21:15,220 So we shall continue that experiment and the next lesson. 312 00:21:15,850 --> 00:21:22,050 So I'll see you in the next lesson as we see how to solve this issue using the UTX we created.