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Video tags
Subtitles
Russian
00:00:01
[music]00:00:02
hello everyone, dear friends, today we00:00:05
continue to00:00:06
program microcontrollers pic we still have00:00:08
peak 16 f 84,00:00:13
well, we can say at the moment it is the00:00:15
simplest, but it is convenient to00:00:17
start with since it has a00:00:21
smaller datasheet and is harder to get confused that is, if00:00:24
you, for example, take some00:00:27
877 peak and run the same project, but00:00:30
not necessarily the same one, you create a new one00:00:32
but use the same code, then the code00:00:35
will work successfully on those00:00:37
controllers, that is, what is good about the peak, it is00:00:40
backward compatible,00:00:42
but although if in the average family this would be true,00:00:45
that is, for example, timer 0 or there are00:00:48
some other registers that 84 already has,00:00:51
877 definitely has it, and then00:00:55
new registers could appear, but these00:00:57
will definitely be there, that is, these are00:00:59
very convenient, that is, I this I checked00:01:02
it all works great, you can00:01:04
easily choose a board from your ball with 87700:01:09
and work with my lessons safely, well, that’s00:01:12
okay today we have a continuation so far00:01:15
working with ports,00:01:17
we already worked with them in the last lesson00:01:20
successfully on the output00:01:23
by using them and controlling them on the output00:01:26
Today we’ll try to use the00:01:29
input port school and track the level at this input00:01:32
and, for example, connect a00:01:36
button there with this button to control something,00:01:39
so we’ll name our project00:01:42
accordingly, let’s call mine bottom 0 1st00:01:46
place blink and now I’ll teach you how to make a00:01:48
project out of a previous project another, that00:01:52
is, without losing the code, we can do this00:01:55
already on vr on stm, it’s peak I haven’t00:01:59
shown it yet, create a folder, here’s the loaf 0 100:02:03
x copy everything from our code in the00:02:07
last lesson, not everything, but you can take00:02:10
this file resisted the main mix file and the00:02:14
nb project folder, accordingly,00:02:18
we rename the file with the prosthesis, of00:02:21
course we don’t touch anything here, we go into the00:02:24
India project folder, we leave there only00:02:26
these two configurations files of its00:02:30
project, we delete everything else, we00:02:31
go into the project xml and we change00:02:36
only this x in it, we remove it and that’s it00:02:41
blink 01 to loaf 01, that’s it, we save everything00:02:45
and our project is basically ready, we can00:02:48
safely go to VMP Lap and connect it,00:02:52
that is, this is how we created a new00:02:54
project without losing the codes of the old project,00:02:57
or on this button we press open00:03:00
project or file open project,00:03:03
respectively in the folder with our00:03:05
projects, select the corresponding00:03:08
project00:03:09
bottom 01 with the right button, call up the00:03:13
context menu in the tree of00:03:15
our project and put it in the main set00:03:20
with my project, we open beyonce in it00:03:24
and try to assemble it, press f11,00:03:28
but everything is assembled as you see00:03:31
loaf 0 1 x production hex00:03:34
we created perfectly, what needs to be done to00:03:38
assign a00:03:39
port pin to the output is clear to do since when00:03:45
we assigned it, that is, to the input,00:03:47
once we assigned it to the output,00:03:50
we set the corresponding bit of this00:03:52
pin to one, then it’s clear that we00:03:54
need to set it to zero in the00:03:59
fig register of the corresponding the letter of the port,00:04:02
so well, you00:04:07
can try to assemble the project again, you ca00:04:10
n’t try it, it wo00:04:12
n’t go anywhere, it will assemble, let’s first00:04:15
take a00:04:16
little break from where and work a little with the00:04:20
opposite ourselves, we’ll connect a button there, that is,00:04:22
we connect the button with you, as we00:04:26
understood from if there is a 4 here, it means00:04:29
2 bit is not 0 not 1 2 that is, from the right we00:04:34
are moving 2 0 will be to the right 3 100:04:37
if you imagine what 4 is in00:04:39
hexadecimal then 100 in binary in00:04:42
binary calculus y add a button I00:04:46
think the button we all know how to add00:04:49
forced we type here the loaf and the button00:04:55
ours00:04:56
will be connected, let's first00:05:03
probably move a little here00:05:07
so it will be easier, well, let's00:05:13
connect it like this, and I can do everything with a common wire like this, so00:05:21
copy here, let's connect like this with a00:05:24
common wire, and because we have00:05:29
ports with you and00:05:30
open collector of their legs, then it is best to00:05:33
tighten it with some kind of00:05:35
resistor because power wires, that is,00:05:40
we find the power wire, more go,00:05:51
the resistor was already with you, so it00:05:53
will be easier for us and this is exactly00:06:00
what we need a 10 kilohm press in00:06:03
the most normal way, I also connected it,00:06:06
as you remember, if you watched my00:06:08
classes on the era then this resistor00:06:11
could be tightened programmatically, they say, the00:06:13
peak also has software00:06:16
support for resistor registers, sorry,00:06:18
but it’s not quite so simple, the hatch of00:06:23
any leg is difficult, the resistor00:06:26
can be tightened, you can00:06:28
pull up the resistors with port B, there is a special00:06:32
register there for this, but it’s better to00:06:35
use a real resistor At the00:06:38
same time, let's go to the property of00:06:40
the controller and show our project00:06:45
because I'm showing it to you because00:06:48
I've already done all this and that's why he00:06:50
remembers, that is, we need to show him our00:06:53
current firmware, I hope you00:06:56
know how to do this, but let's say for now what kind of00:06:58
cat there is, let's say you and I have00:07:01
LEDs running well, now let's go to the project00:07:05
and let's add a function here to00:07:07
determine whether a button is pressed or not pressed00:07:11
a function that at first glance seems00:07:13
not entirely easy, in fact it is very00:07:17
easy to know what we do here when00:07:20
entering a function we have no there00:07:22
will be no parameters since we are not00:07:25
setting something, but on the contrary we are getting it, that00:07:27
is, on the contrary, we00:07:29
will have an 8-bit unsigned response00:07:34
from the function, that is, the returned parameter00:07:36
will be therefore we create similar00:07:39
variables locally and00:07:41
resort also another variable for00:07:43
counting and now you will understand why we can00:07:45
count and go into such a cycle00:07:48
that will determine whether00:07:51
our leg is pressed,00:07:52
but since we need to track the low00:07:54
level, it is always a high level and the00:07:57
mouse is pulled up to a high button pressed,00:07:59
on the contrary, we will have the leg so00:08:01
low level00:08:03
when pressing connect, so we00:08:06
monitor the low level on these legs,00:08:09
that is, we check the bit00:08:12
for zero, so this is how we do00:08:16
ra2! we put it, that is, we have a negation,00:08:21
that is, a low level, so to speak, and00:08:24
if we have this bit to it is not equal to00:08:27
ten thousand,00:08:28
then we increase it, then we no longer00:08:32
fall into this wells condition in this body,00:08:35
since we still have00:08:38
less00:08:39
again, or do the next iteration,00:08:41
run through the body of our loop00:08:44
and until we reach 10,000,00:08:47
then here in thousands we get 1000:08:49
milliseconds, somewhere around 20, you can00:08:52
check all this, as I showed you,00:08:54
there is an excellent tool called00:08:58
stopwatch feet or stopwatch that is,00:09:02
you can use it, it can all be00:09:05
selected experimentally, why do00:09:08
we need it, we need it in order to00:09:11
combat chattering at the same time,00:09:14
that is, a short00:09:18
circuit to the buttons may accidentally occur, but not a short circuit, the00:09:20
connection of the contacts, but as a rule, it’s00:09:23
accidental, but sometimes it’s not necessary,00:09:24
but 10 milliseconds, I think we can easily00:09:29
hold the button, that is, when we00:09:31
press it, if we press it very briefly,00:09:33
it will not work the code, that is, now00:09:35
we have reached 10 thousand, that is,00:09:38
we already have no less than a baht count of 10 thousand,00:09:41
then we find ourselves in this is the cycle, that00:09:45
is, in this condition we00:09:47
set the result to one and we00:09:50
exit this cycle, we00:09:53
get here and return the resort if00:09:55
suddenly we do not reach this value and00:09:59
find that here the00:10:01
level we need is low will disappear, then we00:10:05
will exit this loop but the result00:10:08
variable will remain zero, that00:10:10
is, by doing so, we define the check00:10:13
as if it is a loaf or nothing, that is, whether00:10:16
it is pressed or not, that is, that is,00:10:18
in a very convenient function, you00:10:20
can try to place a thousand, I00:10:23
even did earlier up to 5 I thought it00:10:25
worked quite well, that is, this is how00:10:26
contact bounce tracking works, but00:10:29
all we have to do is call00:10:32
the function given somewhere with you, you can call it here, here, that is,00:10:37
we are here with you,00:10:39
if you remember from the last lesson,00:10:41
the mileage is happening lit00:10:44
LEDs, that is, a running fire, and00:10:48
here we will insert the data with you,00:10:53
in general, this entire cycle will run00:10:55
so much only when we discover00:10:57
here that we have00:10:58
a button pressed, if our button is not00:11:04
pressed, then no we00:11:07
don’t get into this cycle, that is, the kit, without any00:11:10
delays, constantly monitors here to see if00:11:13
the button is pressed, this is our00:11:15
infinite loop, if it’s pressed00:11:17
suddenly there and we get here, even if we press the00:11:20
button while working, this is the00:11:24
code, then the code before works until end, well,00:11:28
there is some problem here, we00:11:30
will see it with you now, let’s not localize it00:11:33
with you for now, so to speak, look,00:11:36
we launch accordingly,00:11:39
nothing is running now, we press the button,00:11:41
the fire started running and it didn’t go out for us in the00:11:44
end here than the chip, that is,00:11:47
we will remove this chip with you, that is, we00:11:49
will take this from here with you to the clipboard,00:11:52
we will delete the data center and we will dry it, the00:11:56
LED data connected through a00:12:00
current-limiting resistor. and ra2 is00:12:03
right here after the delay that’s all and00:12:06
we’ll have everything work fine with you then00:12:08
let’s try again,00:12:12
assemble, launch, press, it00:12:17
ran and went out, that is, and just like that, we00:12:19
can, as we remember,00:12:22
lock the button if we00:12:24
always have it with a knife this will be the00:12:27
running lights and that's it, this is how we00:12:31
got the code, that is, today we00:12:33
learned how00:12:35
to track the level on the port leg,00:12:38
well, let's of course look at all this00:12:42
on the real diagram,00:12:44
let's run with you the programs for00:12:47
flashing since you have a programmer with00:12:50
us we agreed with you that it’s not00:12:54
branded, it’s not a third party, he doesn’t00:12:57
know ours, he wanted to say our studio, this is what00:13:00
happens, so to speak, an00:13:04
option when we haven’t yet connected00:13:06
the programmer, we launched00:13:08
this thing, that is, we won’t disable this00:13:10
program00:13:11
close and now let’s connect00:13:14
our controller,00:13:17
connect it and do this, check00:13:22
communications and most likely we00:13:25
will have our controller, but it wasn’t found,00:13:28
apparently I may be here, but I did00:13:30
n’t connect it quite correctly;00:13:36
and we found everything under00:13:42
control, let’s turn it down a little here with00:13:45
the key and here we have a tiny little one00:13:49
running, but these are some lights of this one, and then it00:13:52
tries to trust and the lights run according to a00:13:54
timer, so wait for a lesson, that00:13:57
is, the code and the timer are mixed here not a00:14:02
timer, that is, and in an endless loop, I will00:14:04
now press a button and there will be another00:14:06
light before occupying that quadruples he will00:14:08
lag behind will see that in the00:14:12
timer procedure in the00:14:14
interrupt handler the fire is running and the fact that I00:14:17
press the button, that is, what I am00:14:21
showing is that the processing procedure of00:14:23
the timer does not depend in any way on the main00:14:25
code, it does not interfere with its work,00:14:28
that’s the thing, well, the button is like this, I00:14:31
connected it to the phone, you can see it just00:14:34
with the legs first, the usual clock00:14:36
button is here, I stuck it in, but it00:14:41
often popped out, so I soldered it to it00:14:45
These are the usual pins I took from the00:14:48
pin strip and now she00:14:51
feels very confident here, so to speak,00:14:55
and plus, of course, we see the button where we00:14:58
connect from, we connect and Minvod from the00:15:00
very first contact with you, let’s00:15:07
open the datasheet or something and peak 8400:15:12
hey document here we are We’ll see that this is00:15:16
ra2, which is great, and it goes to the button here,00:15:21
and the second contact button is this00:15:24
part, it goes to the common wire, to the00:15:27
minus wire, to the blue stripe, and we have a00:15:30
10 kilo-ohm resistor like this, some00:15:32
old one, I found, well, it works fine00:15:35
you have already noticed that this is of course a00:15:38
different project, but I just00:15:40
delighted you in advance before the00:15:43
next lessons, I usually keep it a secret,00:15:47
well, I don’t see the point in it now, well, of course, I00:15:52
already tried it here, but it’s better00:15:54
let’s open it as expected, here00:15:56
we are blink and we need bottom00:15:59
01 go to gist default production then 000:16:04
1 x we all have configuration00:16:07
bits and we are flashing our controller,00:16:11
all the controller is flashed we see that00:16:13
no lights are running, we press the00:16:16
button they ran very00:16:18
briefly press they did not run,00:16:20
that is, like this fight against rattling,00:16:22
that is, we turned it down and it will work for a short time,00:16:25
work will work,00:16:28
we press normally, that is, they ran, so the00:16:30
number is 10,000 where you can pick it yourself,00:16:34
I hope this is what we00:16:37
got today, a short but quite00:16:40
informative lesson we learned from you can00:16:43
monitor the status of the input port, we have00:16:46
connected a button to the input and now we00:16:48
can quite control something, that is, we can00:16:50
connect several buttons and so on,00:16:54
thank you all for your attention, wait for the00:16:56
next lessons, that is, the next lesson00:16:59
we will most likely have on a timer,00:17:01
that is, while we are working specifically with the00:17:04
eighty-fourth controller, but00:17:06
most likely after the fifth lesson on the00:17:08
timer we will switch to the 876 controller00:17:13
which has a slightly larger knife and there00:17:16
will be more of these different timers, we00:17:18
will work with other timers, they can00:17:21
already be used in shim mode, then a00:17:25
sold-out party00:17:27
at the sart awaits us As usual, you will be working with a00:17:30
static indication using a00:17:33
seven-segment indicator, also with a00:17:36
dynamic indication using00:17:38
several or a bass00:17:40
1 indicator leg of a bit, well, as a00:17:43
rule, 4 so wait, it will be interesting,00:17:46
that is, I have all this in the stm burst,00:17:49
you see, of course, but the peak is a little00:17:51
it’s all different, that is, so we’ll00:17:54
look and peak I won’t really00:17:57
explain the intricacies of C programming, I00:18:01
hope you know this, if you don’t know then00:18:04
look at the lessons there, I explain00:18:08
what such a function is, how it calls how00:18:11
it returns what parameters00:18:13
then there is how it accepts them, what are while00:18:16
loops, what is an infinite loop, a00:18:18
finite loop, a for loop, so if you need00:18:22
to look there, well, or some00:18:25
kind of reference books or00:18:26
lessons, you use it again,00:18:29
thank you all for your attention, write comments00:18:32
with press the button, I like it if you00:18:34
liked this video about leaving the age of00:18:36
what lesson you will immediately learn if00:18:39
you subscribe to the channel and turn on00:18:42
the notification to everyone, bye everyone00:18:45
good healthDescription:
Сегодня мы продолжим работу по программированию контроллеров PIC. На данном уроке мы по прежнему работаем с контроллером PIC16F84A и подключим к нему ещё кнопку. Цель подключения кнопки - поработать с ножками порта в режиме их настройки на вход. Мы также испытаем затем наш код и в протеусе и на практической схеме. Приобрести программатор PICKit3 (неоригинальный) можно здесь http://ali.pub/24fd8t Приобрести программатор PICKit3 (оригинальный) можно здесь http://ali.pub/24fdzu Навигация по видео: 00:00 Введение 01:40 Преобразуем прошлый проект в новый без потери кода 04:44 Подключим кнопку в протеусе 07:04 Напишем функцию отслеживания состояния кнопки, в которой также проведём борьбу с дребезгом 10:30 Отследим нажатие кнопки в бесконечном цикле 12:10 Проверим работу кода в протеусе 12:40 Проверим работу кода на практической схеме. Для более понятного просмотра данного видео предварительно рекомендуется посмотреть: Урок 1. Знакомство с семейством PIC https://www.youtube.com/watch?v=Ut9j4JINpSw Урок 2. Первый проект в MPLAB X IDE https://www.youtube.com/watch?v=P4CKlUionBo Текстовая версия урока и исходный код здесь https://narodstream.ru/pic-urok-4-knopka/ Группа в контакте http://vk.com/club116656325 Группа в Одноклассниках http://ok.ru/group/52987126153436 Группа в Facebook https://www.facebook.com/unsupportedbrowser Мой сайт "Программирование МК" https://narodstream.ru/ Форум https://narodstream.ru/forum/ Вы можете помочь проекту: ЮMoney https://yoomoney.ru/to/41001176473465 Webmoney Z341906933112 Карта Сбербанка (МИР) 2202201799288929 Можно в USDT 1) Сеть:TRC20 Адрес: TBBPFk5Widf1CYvF7Xk5ssKXeiPJHwtMgS 2) Сеть: BSC BNB Smart Chain (BEP20) (комиссия намного меньше) Адрес: 0x2e38754DF1e54649Bf0D5CD6fD6D8c96a9f22f17 3) Сеть: Huobi ECO Chain (HECO) (комиссия еще меньше) Адрес: 0x2e38754DF1e54649Bf0D5CD6fD6D8c96a9f22f17
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The most convenient way is to use the UDL Client program, which supports converting video to MP3 format. In some cases, MP3 can also be downloaded through the UDL Helper extension.
How can I save a frame from a video "Программирование МК PIC. Урок 4. Кнопка"?
This feature is available in the UDL Helper extension. Make sure that "Show the video snapshot button" is checked in the settings. A camera icon should appear in the lower right corner of the player to the left of the "Settings" icon. When you click on it, the current frame from the video will be saved to your computer in JPEG format.
What's the price of all this stuff?
It costs nothing. Our services are absolutely free for all users. There are no PRO subscriptions, no restrictions on the number or maximum length of downloaded videos.