commit c1d7fc043422a0eeba736c2a22263f63f7dd0d89
Author: Класс <class@vyatsu.ru>
Date:   Tue Apr 11 14:28:20 2023 +0300

    add base info, pwm, i2c

diff --git a/info.docx b/info.docx
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diff --git a/info.txt b/info.txt
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+существует 5 блоков 
+1 блок - опрашивание (пришла ли команда)
+2 блок - TWI (I2C)
+3 блок - работа с ШИМ (ВКЛ, частота, скважность) - 8-bit T/C0
+
+Самый низкий уровень - блок 2-wire и блок 8-bit timer
+
+шим таймер:
+изначальные регистры инициализация
+до куда считать и когда сбрасывать
+компаратор
+
+i2c
+16000000UL
+
+Информация:
+https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7810-Automotive-Microcontrollers-ATmega328P_Datasheet.pdf
+https://robotclass.ru/tutorials/pwm/
+https://3d-diy.ru/wiki/arduino-moduli/interfeys-peredachi-dannykh-i2c/
+https://smartep.ru/index.php?page=avr_c_examples#p12
+http://microsin.net/programming/avr/example-using-the-twi-i2c.html
+https://forum.amperka.ru/threads/%D0%B0%D0%BF%D0%BF%D0%B0%D1%80%D0%B0%D1%82%D0%BD%D1%8B%D0%B9-i2c-%D0%B2-atmega328p.18806/
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diff --git a/mega pinout.jpg b/mega pinout.jpg
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diff --git a/program PWM.c b/program PWM.c
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+#define F_CPU 16000000UL //частота работы микроконтроллера
+#include <util/delay.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+  
+
+void timer1_init(int frequency, int dutycycle){
+  DDRD |= (1 << PORTD6);  //OC1A (12)
+  DDRD |= (1 << PORTD5);  //OC1B (11)
+
+  TCCR1A = 0;
+  TCCR1B = 0;
+  TCNT1 = 0;
+
+  // Не инверсный режим работы и OC0B 
+  TCCR1A |= (1 << COM1A1) | (0 << COM1A0);
+
+  //Fast PWM (Быстрый ШИМ)
+  TCCR1A |= (1 << WGM11) | (1 << WGM10);
+  TCCR1B |= (1 << WGM13) | (1 << WGM12); 
+
+  //Предделитель - 1024
+  TCCR1B |= (1 << CS12) | (0 << CS11) | (1 << CS10);
+
+  //Частота = Частота_мк / (Предделитель * OCR1A)
+  OCR1A = F_CPU / 1024 / frequency;
+
+  //Скважность
+  OCR1B = OCR1A * dutycycle / 100;
+}
+
+int main(void){
+
+  cli();
+  timer1_init(); //после инициализации на выводе OC1B (11) будет ШИМ сигнал 
+  sei();
+
+    while (1){
+    }
+
+  return 0;
+}
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diff --git a/program i2c (2-wire).c b/program i2c (2-wire).c
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+// Wire Peripheral Receiver
+// by Nicholas Zambetti <http://www.zambetti.com>
+// Demonstrates use of the Wire library
+// Receives data as an I2C/TWI Peripheral device
+// Refer to the "Wire Master Writer" example for use with this
+
+// Created 29 March 2006
+
+// This example code is in the public domain.
+
+
+#include <Wire.h>
+
+void setup()
+{
+  Wire.begin(4);                // join i2c bus with address #4
+  Wire.onReceive(receiveEvent); // register event
+  Serial.begin(9600);           // start serial for output
+}
+
+void loop()
+{
+  delay(100);
+}
+
+// function that executes whenever data is received from master
+// this function is registered as an event, see setup()
+void receiveEvent(int howMany)
+{
+  while(1 < Wire.available()) // loop through all but the last
+  {
+    char c = Wire.read(); // receive byte as a character
+    Serial.print(c);         // print the character
+  }
+  int x = Wire.read();    // receive byte as an integer
+  Serial.println(x);         // print the integer
+}
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