Fan: O’rnatilgan tizimlar Bajardi: Olimjonov Xasanboy Tekshirdi

O‘ZBEKISTON RESPUBLIKASI AXBOROT TEXNOLOGIYALARI VA KOMMUNIKATSIYALARINI RIVOJLANTIRISH VAZIRLIGI
MUHAMMAD AL-XORAZMIY NOMIDAGI TOSHKENT AXBOROT TEXNOLOGIYALARI UNIVERSITETI
Topshiriq-2
Mavzu: RGB led hamda 7 segmentli indikatorlardan foydalanish
Fan: O’rnatilgan tizimlar
Bajardi: Olimjonov Xasanboy
Tekshirdi: Xoldorov Shohruhmirzo

2-topshiriq.

Vazifalar
1. RGB led orqali jarayonlarni boshqarish
2. 1 razryad 7 segmentli indikator yordamida jarayonlarni boshqarish
3. 4 razryadli 7 segmentli indikator yordamida jarayonlarni boshqarish

1. RGB led orqali jarayonlarni boshqarish

Qisqacha nazariy ma’lumot
LED yorug'lik chiqaradigan diyotdir. Arzon va ishlatish uchun qulay bo'lgan, har qanday elektron kartaga ega uskuna. Uning asosiy funktsiyalari iste'mol qilinadigan kam energiya va biz LED-lar bilan topadigan turli xil formatlardir. Shunday qilib, bizni yoritadigan an'anaviy lampalardan farqli o'laroq, LEDlar ularni turli xil qurilmalarda ishlatishga va hatto an'anaviy lampochka shaklidan uzoqroq bo'lgan boshqa shakllarni yaratishga imkon beradi. LEDlarning foydali soatlari boshqa qurilmalarga qaraganda ancha yuqori. Shunday qilib, lampochka sifatida ushbu turdagi diod an'anaviy lampochkadan ko'ra ko'proq soatlab yorug'lik beradi; Ekranning bir qismi sifatida LED piksellari oddiy pikselga qaraganda ko'proq umr ko'rishadi; Va shuning uchun texnologiyadan foydalanadigan turli xil qurilmalar bilan ishlaydi. Ammo bu holda biz RGB chiroqlari, tobora ommalashib borayotgan chiroqlar haqida gaplashamiz. Ushbu muvaffaqiyatning sababi ularning oddiy chiroqlardan yuqori bo'lgan imkoniyatlari bilan bog'liq. LED diod yorug'likning faqat bitta rangini taklif qiladi, agar biz diyotni o'zgartirmasak, uni qurilmaga o'zgartira olmaymiz. RGB Led diodasi uchta rangda yorug'lik chiqaradi: Qizil (Qizil), Yashil (Yashil) va Moviy (Moviy) va ularning kombinatsiyalari, ya'ni diodani o'zgartirmasdan rangni bizning xohishimizga o'zgartirishi mumkin. RGB LED yoritgichlarining muvaffaqiyati diodani o'zgartirmasdan yorug'lik rangini o'zgartirish imkoniyatiga bog'liq bo'lib, u uchun faqat dasturiy bilim kerak bo'lgan juda amaliy narsa.
Amaliy qism:

Topshoroq kod qismi:
const int rgbPins[] = { 11, 10, 9};
const int buttonPins[] = { 4, 3, 2}; // input pins for Red, Green and Blue button.

float newStatus = 50.0; // the new status from 0.0 to 100.0, 50 = Green

float filteredStatus = 50.0; // low pas filtered status of the project from 0.0 to 100.0

float x = -0.5; // from -0.5 to 0.5, value on the time axis of the pulse

// A millis-timer of 40ms is used to update the PWM value for the RGB led
// The PWM signal itself is about 500Hz for a Arduino Uno
unsigned long previousMillis;
const unsigned long interval = 40; // 40 ms interval for 25 Hz

void setup()

{
for( int i=0; i<3; i++)
pinMode( rgbPins[i], OUTPUT);

for( int i=0; i<3; i++)

pinMode( buttonPins[i], INPUT_PULLUP);
}

void loop()

{
unsigned long currentMillis = millis();

// The buttons do not need any debounce in this specific sketch.

// They can be pressed long or short or multiple times.
if( digitalRead(buttonPins[0]) == LOW) // Red button, active LOW
newStatus = 100.0;
if( digitalRead(buttonPins[1]) == LOW) // Green button, active LOW
newStatus = 50.0;
if( digitalRead(buttonPins[2]) == LOW) // Blue button, active LOW
newStatus = 0.0;

// Millis timer to set the update rate of the PWM for RGB led,

// and to provide a constant interval to calculate the pulse.
if( currentMillis - previousMillis >= interval)
{
previousMillis = currentMillis;

// Low pass filter.

// Lower percentage for slower filter, higher percentage for faster filter
const float pct = 1.8; // percentage of new value added to filter
filteredStatus = (( 1.0 - (pct / 100.0)) * filteredStatus) + (pct / 100.0 * newStatus);

float r, g, b; // values 0...1

float f; // frequency of the pulse in Hz

// Convert status (0...100) to hue and frequency

// 0 = blue = 0.5 Hz
// 50 = green = 1.0 Hz
// 100 = red = 3.0 Hz
if( filteredStatus < 50.0)
{
r = 0.0;
g = filteredStatus / 50.0;
b = 1.0 - g;
f = 0.5 + (g / 2); // 0.5 to 1.0 for lower range
}
else
{
r = (filteredStatus - 50.0) / 50.0;
g = 1.0 - r;
b = 0.0;
f = 1.0 + (2 * r); // 1.0 to 3.0 for higher range
}

// The standard deviation is:

// y = e ^ ( -0.5 * x * x )
// This sketch uses:
// y = expf ( -s * squaref ( x ) ) // s = steepness, -50 is normal, -150 is steep
// The 'y' will be used for the amplitude of the r, g, b values.
float y = expf( -50.0 * squaref( x));

// Increment 'x' for the time axis.

// Keep 'x' between -0.5 and 0.5
x += f * float( interval) / 1000.0; // divide interval by 1000 because it is in milliseconds
if( x >= 0.5)
x -= 1.0;

// Multiply each color by the amplitude of the pulse.

// The minimal value is set to 1, because turning the led completely off
// didn't look good.
int pwmR = (int) round( 1.0 + (r * y * 254.0));
int pwmG = (int) round( 1.0 + (g * y * 254.0));
int pwmB = (int) round( 1.0 + (b * y * 254.0));

// Write the new PWM value to the PWM pins for the Red, Green and Blue led colors.

analogWrite( rgbPins[0], pwmR);
analogWrite( rgbPins[1], pwmG);
analogWrite( rgbPins[2], pwmB);
}
}
Topshiriq linki:
https://www.tinkercad.com/things/gnyAbBxGtDj-shiny-gogo/editel?sharecode=XJSlPTmU_qJt9sdVMVjFOMyfnZFOFriWZmafpvPMEGY
2. 1 razryad 7 segmentli indikator yordamida jarayonlarni boshqarish