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Reviewed-on: #12

.gitignore

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+hdlc1.c
+hdlc1.h
+hdlc_frame.c
+hdlc_frame.h
+main1.c
+uart.c
+uart.h
+
+!./hdlc
+/.idea/Display_Avr_3.iml
+/.idea/.gitignore
+/.idea/vcs.xml
+/.idea/modules.xml

Lcd_print.cpp

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+#include <avr/io.h>
+#include <util/delay.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <compat/twi.h>
+#include <inttypes.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <stdio.h>
+#include "lcdpcf8574.h"
+#include "pcf8574.h"
+#include "i2cmaster.h"
+#include "lcd.h"
+#include <Arduino.h>
+
+struct DisplayData {
+  char topLine[64];
+  int value1;
+  int value2;
+  int value3;
+};
+
+struct TextCounter {
+  unsigned long startTime;
+  int incrementValue;
+};
+
+TextCounter textCounter;
+
+void Lcd_inciliation() {
+  lcd_init(LCD_DISP_ON_BLINK); // инициализация дисплея
+  lcd_home(); // домой курсор
+  lcd_led(0); // вкл подсветки
+  textCounter.startTime = millis(); // Запоминаем время запуска программы
+}
+
+void fillBuffer1(const char * source, char * buffer, size_t bufferSize, int incrementValue) {
+  int startIndex = incrementValue % strlen(source); // Определяем начальный индекс на основе incrementValue
+  int endIndex = startIndex + 16;
+
+  if (endIndex > strlen(source)) {
+  // Если endIndex превышает длину строки source, переносим его на начало строки
+  endIndex = endIndex - strlen(source);
+
+  // Копируем символы с конца строки source
+  strncpy(buffer, source + startIndex, strlen(source) - startIndex);
+
+  // Копируем оставшиеся символы с начала строки source
+  strncat(buffer, source, endIndex);
+  } else {
+    strncpy(buffer, source + startIndex, endIndex - startIndex);
+  }
+  buffer[endIndex - startIndex] = '\0'; // Установка нулевого символа в конце буфера
+}
+
+void fillBuffer2(int value1, int value2, int value3, char * buffer, size_t bufferSize) {
+  snprintf(buffer, bufferSize, "%d.%d.%d", value1, value2, value3);
+}
+
+int convertR(char h, char t, char o)
+{
+    return ((h - '0') * 100 + (t - '0') * 10 + (o - '0') * 1);
+
+}
+
+
+void first_nine(struct DisplayData arr) {
+    size_t len = strlen(arr.topLine);
+    memmove(arr, arr.topLine + 9, len - 8 );
+}
+
+void printLcd(const char * inputText)
+{
+  unsigned long currentTime = millis(); // Текущее время
+  // Проверяем, прошло ли 500 мс с момента последнего увеличения incrementValue
+  if (currentTime - textCounter.startTime >= 500) {
+    textCounter.incrementValue++; // Увеличиваем incrementValue на 1
+    textCounter.startTime = currentTime; // Обновляем время
+  }
+
+  struct DisplayData displayData;
+  strncpy(displayData.topLine, inputText, sizeof(displayData.topLine) - 1);
+  displayData.topLine[sizeof(displayData.topLine) - 1] = '\0';
+  displayData.value1 = convertR(displayData.topLine[0], displayData.topLine[1], displayData.topLine[2]);
+  displayData.value2 = convertR(displayData.topLine[3], displayData.topLine[4], displayData.topLine[5]);
+  displayData.value3 = convertR(displayData.topLine[6], displayData.topLine[7], displayData.topLine[8]);
+                  
+  first_nine(displayData);
+
+  // Буферы для заполнения данных
+  char buffer1[17];
+  char buffer2[17];
+
+  // Заполнение буфера 1
+  fillBuffer1(displayData.topLine, buffer1, sizeof(buffer1), textCounter.incrementValue);
+
+  // Заполнение буфера 2
+  fillBuffer2(displayData.value1, displayData.value2, displayData.value3, buffer2, sizeof(buffer2));
+
+  // Создание массива для вывода на дисплей
+  char displayArray[32];
+  strncpy(displayArray, buffer1, 16); // Копирование первых 16 символов из buffer1 в displayArray
+  strncpy(displayArray + 16, buffer2, 16); // Копирование первых 16 символов из buffer2 в displayArray, начиная с позиции 16
+
+  // Вывод данных на экран
+  lcd_gotoxy(0, 0);
+  lcd_puts(displayArray);
+
+  lcd_gotoxy(0, 1);
+  lcd_puts(displayArray + 16); // Вывод второй половины displayArray
+}
+

LiquidCrystal_I2C/LiquidCrystal_I2C.cpp

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+// Based on the work by DFRobot
+
+#include "LiquidCrystal_I2C.h"
+#include <inttypes.h>
+#if defined(ARDUINO) && ARDUINO >= 100
+
+#include "Arduino.h"
+
+#define printIIC(args)	Wire.write(args)
+inline size_t LiquidCrystal_I2C::write(uint8_t value) {
+	send(value, Rs);
+	return 1;
+}
+
+#else
+#include "WProgram.h"
+
+#define printIIC(args)	Wire.send(args)
+inline void LiquidCrystal_I2C::write(uint8_t value) {
+	send(value, Rs);
+}
+
+#endif
+#include "Wire.h"
+
+
+
+// When the display powers up, it is configured as follows:
+//
+// 1. Display clear
+// 2. Function set: 
+//    DL = 1; 8-bit interface data 
+//    N = 0; 1-line display 
+//    F = 0; 5x8 dot character font 
+// 3. Display on/off control: 
+//    D = 0; Display off 
+//    C = 0; Cursor off 
+//    B = 0; Blinking off 
+// 4. Entry mode set: 
+//    I/D = 1; Increment by 1
+//    S = 0; No shift 
+//
+// Note, however, that resetting the Arduino doesn't reset the LCD, so we
+// can't assume that its in that state when a sketch starts (and the
+// LiquidCrystal constructor is called).
+
+LiquidCrystal_I2C::LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows)
+{
+  _Addr = lcd_Addr;
+  _cols = lcd_cols;
+  _rows = lcd_rows;
+  _backlightval = LCD_NOBACKLIGHT;
+}
+
+void LiquidCrystal_I2C::init(){
+	init_priv();
+}
+
+void LiquidCrystal_I2C::init_priv()
+{
+	Wire.begin();
+	_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
+	begin(_cols, _rows);  
+}
+
+void LiquidCrystal_I2C::begin(uint8_t cols, uint8_t lines, uint8_t dotsize) {
+	if (lines > 1) {
+		_displayfunction |= LCD_2LINE;
+	}
+	_numlines = lines;
+
+	// for some 1 line displays you can select a 10 pixel high font
+	if ((dotsize != 0) && (lines == 1)) {
+		_displayfunction |= LCD_5x10DOTS;
+	}
+
+	// SEE PAGE 45/46 FOR INITIALIZATION SPECIFICATION!
+	// according to datasheet, we need at least 40ms after power rises above 2.7V
+	// before sending commands. Arduino can turn on way befer 4.5V so we'll wait 50
+	delay(50); 
+  
+	// Now we pull both RS and R/W low to begin commands
+	expanderWrite(_backlightval);	// reset expanderand turn backlight off (Bit 8 =1)
+	delay(1000);
+
+  	//put the LCD into 4 bit mode
+	// this is according to the hitachi HD44780 datasheet
+	// figure 24, pg 46
+	
+	  // we start in 8bit mode, try to set 4 bit mode
+   write4bits(0x03 << 4);
+   delayMicroseconds(4500); // wait min 4.1ms
+   
+   // second try
+   write4bits(0x03 << 4);
+   delayMicroseconds(4500); // wait min 4.1ms
+   
+   // third go!
+   write4bits(0x03 << 4); 
+   delayMicroseconds(150);
+   
+   // finally, set to 4-bit interface
+   write4bits(0x02 << 4); 
+
+
+	// set # lines, font size, etc.
+	command(LCD_FUNCTIONSET | _displayfunction);  
+	
+	// turn the display on with no cursor or blinking default
+	_displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
+	display();
+	
+	// clear it off
+	clear();
+	
+	// Initialize to default text direction (for roman languages)
+	_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
+	
+	// set the entry mode
+	command(LCD_ENTRYMODESET | _displaymode);
+	
+	home();
+  
+}
+
+/********** high level commands, for the user! */
+void LiquidCrystal_I2C::clear(){
+	command(LCD_CLEARDISPLAY);// clear display, set cursor position to zero
+	delayMicroseconds(2000);  // this command takes a long time!
+}
+
+void LiquidCrystal_I2C::home(){
+	command(LCD_RETURNHOME);  // set cursor position to zero
+	delayMicroseconds(2000);  // this command takes a long time!
+}
+
+void LiquidCrystal_I2C::setCursor(uint8_t col, uint8_t row){
+	int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
+	if ( row > _numlines ) {
+		row = _numlines-1;    // we count rows starting w/0
+	}
+	command(LCD_SETDDRAMADDR | (col + row_offsets[row]));
+}
+
+// Turn the display on/off (quickly)
+void LiquidCrystal_I2C::noDisplay() {
+	_displaycontrol &= ~LCD_DISPLAYON;
+	command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+void LiquidCrystal_I2C::display() {
+	_displaycontrol |= LCD_DISPLAYON;
+	command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+
+// Turns the underline cursor on/off
+void LiquidCrystal_I2C::noCursor() {
+	_displaycontrol &= ~LCD_CURSORON;
+	command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+void LiquidCrystal_I2C::cursor() {
+	_displaycontrol |= LCD_CURSORON;
+	command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+
+// Turn on and off the blinking cursor
+void LiquidCrystal_I2C::noBlink() {
+	_displaycontrol &= ~LCD_BLINKON;
+	command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+void LiquidCrystal_I2C::blink() {
+	_displaycontrol |= LCD_BLINKON;
+	command(LCD_DISPLAYCONTROL | _displaycontrol);
+}
+
+// These commands scroll the display without changing the RAM
+void LiquidCrystal_I2C::scrollDisplayLeft(void) {
+	command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVELEFT);
+}
+void LiquidCrystal_I2C::scrollDisplayRight(void) {
+	command(LCD_CURSORSHIFT | LCD_DISPLAYMOVE | LCD_MOVERIGHT);
+}
+
+// This is for text that flows Left to Right
+void LiquidCrystal_I2C::leftToRight(void) {
+	_displaymode |= LCD_ENTRYLEFT;
+	command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// This is for text that flows Right to Left
+void LiquidCrystal_I2C::rightToLeft(void) {
+	_displaymode &= ~LCD_ENTRYLEFT;
+	command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// This will 'right justify' text from the cursor
+void LiquidCrystal_I2C::autoscroll(void) {
+	_displaymode |= LCD_ENTRYSHIFTINCREMENT;
+	command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// This will 'left justify' text from the cursor
+void LiquidCrystal_I2C::noAutoscroll(void) {
+	_displaymode &= ~LCD_ENTRYSHIFTINCREMENT;
+	command(LCD_ENTRYMODESET | _displaymode);
+}
+
+// Allows us to fill the first 8 CGRAM locations
+// with custom characters
+void LiquidCrystal_I2C::createChar(uint8_t location, uint8_t charmap[]) {
+	location &= 0x7; // we only have 8 locations 0-7
+	command(LCD_SETCGRAMADDR | (location << 3));
+	for (int i=0; i<8; i++) {
+		write(charmap[i]);
+	}
+}
+
+// Turn the (optional) backlight off/on
+void LiquidCrystal_I2C::noBacklight(void) {
+	_backlightval=LCD_NOBACKLIGHT;
+	expanderWrite(0);
+}
+
+void LiquidCrystal_I2C::backlight(void) {
+	_backlightval=LCD_BACKLIGHT;
+	expanderWrite(0);
+}
+
+
+
+/*********** mid level commands, for sending data/cmds */
+
+inline void LiquidCrystal_I2C::command(uint8_t value) {
+	send(value, 0);
+}
+
+
+/************ low level data pushing commands **********/
+
+// write either command or data
+void LiquidCrystal_I2C::send(uint8_t value, uint8_t mode) {
+	uint8_t highnib=value&0xf0;
+	uint8_t lownib=(value<<4)&0xf0;
+       write4bits((highnib)|mode);
+	write4bits((lownib)|mode); 
+}
+
+void LiquidCrystal_I2C::write4bits(uint8_t value) {
+	expanderWrite(value);
+	pulseEnable(value);
+}
+
+void LiquidCrystal_I2C::expanderWrite(uint8_t _data){                                        
+	Wire.beginTransmission(_Addr);
+	printIIC((int)(_data) | _backlightval);
+	Wire.endTransmission();   
+}
+
+void LiquidCrystal_I2C::pulseEnable(uint8_t _data){
+	expanderWrite(_data | En);	// En high
+	delayMicroseconds(1);		// enable pulse must be >450ns
+	
+	expanderWrite(_data & ~En);	// En low
+	delayMicroseconds(50);		// commands need > 37us to settle
+} 
+
+
+// Alias functions
+
+void LiquidCrystal_I2C::cursor_on(){
+	cursor();
+}
+
+void LiquidCrystal_I2C::cursor_off(){
+	noCursor();
+}
+
+void LiquidCrystal_I2C::blink_on(){
+	blink();
+}
+
+void LiquidCrystal_I2C::blink_off(){
+	noBlink();
+}
+
+void LiquidCrystal_I2C::load_custom_character(uint8_t char_num, uint8_t *rows){
+		createChar(char_num, rows);
+}
+
+void LiquidCrystal_I2C::setBacklight(uint8_t new_val){
+	if(new_val){
+		backlight();		// turn backlight on
+	}else{
+		noBacklight();		// turn backlight off
+	}
+}
+
+void LiquidCrystal_I2C::printstr(const char c[]){
+	//This function is not identical to the function used for "real" I2C displays
+	//it's here so the user sketch doesn't have to be changed 
+	print(c);
+}
+
+
+// unsupported API functions
+void LiquidCrystal_I2C::off(){}
+void LiquidCrystal_I2C::on(){}
+void LiquidCrystal_I2C::setDelay (int cmdDelay,int charDelay) {}
+uint8_t LiquidCrystal_I2C::status(){return 0;}
+uint8_t LiquidCrystal_I2C::keypad (){return 0;}
+uint8_t LiquidCrystal_I2C::init_bargraph(uint8_t graphtype){return 0;}
+void LiquidCrystal_I2C::draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len,  uint8_t pixel_col_end){}
+void LiquidCrystal_I2C::draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len,  uint8_t pixel_row_end){}
+void LiquidCrystal_I2C::setContrast(uint8_t new_val){}
+
+	

LiquidCrystal_I2C/LiquidCrystal_I2C.h

@@ -0,0 +1,126 @@
+//YWROBOT
+#ifndef LiquidCrystal_I2C_h
+#define LiquidCrystal_I2C_h
+
+#include <inttypes.h>
+#include "Print.h" 
+#include <Wire.h>
+
+// commands
+#define LCD_CLEARDISPLAY 0x01
+#define LCD_RETURNHOME 0x02
+#define LCD_ENTRYMODESET 0x04
+#define LCD_DISPLAYCONTROL 0x08
+#define LCD_CURSORSHIFT 0x10
+#define LCD_FUNCTIONSET 0x20
+#define LCD_SETCGRAMADDR 0x40
+#define LCD_SETDDRAMADDR 0x80
+
+// flags for display entry mode
+#define LCD_ENTRYRIGHT 0x00
+#define LCD_ENTRYLEFT 0x02
+#define LCD_ENTRYSHIFTINCREMENT 0x01
+#define LCD_ENTRYSHIFTDECREMENT 0x00
+
+// flags for display on/off control
+#define LCD_DISPLAYON 0x04
+#define LCD_DISPLAYOFF 0x00
+#define LCD_CURSORON 0x02
+#define LCD_CURSOROFF 0x00
+#define LCD_BLINKON 0x01
+#define LCD_BLINKOFF 0x00
+
+// flags for display/cursor shift
+#define LCD_DISPLAYMOVE 0x08
+#define LCD_CURSORMOVE 0x00
+#define LCD_MOVERIGHT 0x04
+#define LCD_MOVELEFT 0x00
+
+// flags for function set
+#define LCD_8BITMODE 0x10
+#define LCD_4BITMODE 0x00
+#define LCD_2LINE 0x08
+#define LCD_1LINE 0x00
+#define LCD_5x10DOTS 0x04
+#define LCD_5x8DOTS 0x00
+
+// flags for backlight control
+#define LCD_BACKLIGHT 0x08
+#define LCD_NOBACKLIGHT 0x00
+
+#define En B00000100  // Enable bit
+#define Rw B00000010  // Read/Write bit
+#define Rs B00000001  // Register select bit
+
+class LiquidCrystal_I2C : public Print {
+public:
+  LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows);
+  void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS );
+  void clear();
+  void home();
+  void noDisplay();
+  void display();
+  void noBlink();
+  void blink();
+  void noCursor();
+  void cursor();
+  void scrollDisplayLeft();
+  void scrollDisplayRight();
+  void printLeft();
+  void printRight();
+  void leftToRight();
+  void rightToLeft();
+  void shiftIncrement();
+  void shiftDecrement();
+  void noBacklight();
+  void backlight();
+  void autoscroll();
+  void noAutoscroll(); 
+  void createChar(uint8_t, uint8_t[]);
+  void setCursor(uint8_t, uint8_t); 
+#if defined(ARDUINO) && ARDUINO >= 100
+  virtual size_t write(uint8_t);
+#else
+  virtual void write(uint8_t);
+#endif
+  void command(uint8_t);
+  void init();
+
+////compatibility API function aliases
+void blink_on();						// alias for blink()
+void blink_off();       					// alias for noBlink()
+void cursor_on();      	 					// alias for cursor()
+void cursor_off();      					// alias for noCursor()
+void setBacklight(uint8_t new_val);				// alias for backlight() and nobacklight()
+void load_custom_character(uint8_t char_num, uint8_t *rows);	// alias for createChar()
+void printstr(const char[]);
+
+////Unsupported API functions (not implemented in this library)
+uint8_t status();
+void setContrast(uint8_t new_val);
+uint8_t keypad();
+void setDelay(int,int);
+void on();
+void off();
+uint8_t init_bargraph(uint8_t graphtype);
+void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len,  uint8_t pixel_col_end);
+void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len,  uint8_t pixel_col_end);
+	 
+
+private:
+  void init_priv();
+  void send(uint8_t, uint8_t);
+  void write4bits(uint8_t);
+  void expanderWrite(uint8_t);
+  void pulseEnable(uint8_t);
+  uint8_t _Addr;
+  uint8_t _displayfunction;
+  uint8_t _displaycontrol;
+  uint8_t _displaymode;
+  uint8_t _numlines;
+  uint8_t _cols;
+  uint8_t _rows;
+  uint8_t _backlightval;
+};
+
+#endif

LiquidCrystal_I2C/README.md

@@ -0,0 +1,2 @@
+# LiquidCrystal_I2C
+LiquidCrystal Arduino library for the DFRobot I2C LCD displays

LiquidCrystal_I2C/examples/CustomChars/CustomChars.pde

@@ -0,0 +1,70 @@
+//YWROBOT
+//Compatible with the Arduino IDE 1.0
+//Library version:1.1
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+
+#if defined(ARDUINO) && ARDUINO >= 100
+#define printByte(args)  write(args);
+#else
+#define printByte(args)  print(args,BYTE);
+#endif
+
+uint8_t bell[8]  = {0x4,0xe,0xe,0xe,0x1f,0x0,0x4};
+uint8_t note[8]  = {0x2,0x3,0x2,0xe,0x1e,0xc,0x0};
+uint8_t clock[8] = {0x0,0xe,0x15,0x17,0x11,0xe,0x0};
+uint8_t heart[8] = {0x0,0xa,0x1f,0x1f,0xe,0x4,0x0};
+uint8_t duck[8]  = {0x0,0xc,0x1d,0xf,0xf,0x6,0x0};
+uint8_t check[8] = {0x0,0x1,0x3,0x16,0x1c,0x8,0x0};
+uint8_t cross[8] = {0x0,0x1b,0xe,0x4,0xe,0x1b,0x0};
+uint8_t retarrow[8] = {	0x1,0x1,0x5,0x9,0x1f,0x8,0x4};
+  
+LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
+
+void setup()
+{
+  lcd.init();                      // initialize the lcd 
+  lcd.backlight();
+  
+  lcd.createChar(0, bell);
+  lcd.createChar(1, note);
+  lcd.createChar(2, clock);
+  lcd.createChar(3, heart);
+  lcd.createChar(4, duck);
+  lcd.createChar(5, check);
+  lcd.createChar(6, cross);
+  lcd.createChar(7, retarrow);
+  lcd.home();
+  
+  lcd.print("Hello world...");
+  lcd.setCursor(0, 1);
+  lcd.print(" i ");
+  lcd.printByte(3);
+  lcd.print(" arduinos!");
+  delay(5000);
+  displayKeyCodes();
+  
+}
+
+// display all keycodes
+void displayKeyCodes(void) {
+  uint8_t i = 0;
+  while (1) {
+    lcd.clear();
+    lcd.print("Codes 0x"); lcd.print(i, HEX);
+    lcd.print("-0x"); lcd.print(i+16, HEX);
+    lcd.setCursor(0, 1);
+    for (int j=0; j<16; j++) {
+      lcd.printByte(i+j);
+    }
+    i+=16;
+    
+    delay(4000);
+  }
+}
+
+void loop()
+{
+
+}
+

LiquidCrystal_I2C/examples/HelloWorld/HelloWorld.pde

@@ -0,0 +1,28 @@
+//YWROBOT
+//Compatible with the Arduino IDE 1.0
+//Library version:1.1
+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
+
+void setup()
+{
+  lcd.init();                      // initialize the lcd 
+  lcd.init();
+  // Print a message to the LCD.
+  lcd.backlight();
+  lcd.setCursor(3,0);
+  lcd.print("Hello, world!");
+  lcd.setCursor(2,1);
+  lcd.print("Ywrobot Arduino!");
+   lcd.setCursor(0,2);
+  lcd.print("Arduino LCM IIC 2004");
+   lcd.setCursor(2,3);
+  lcd.print("Power By Ec-yuan!");
+}
+
+
+void loop()
+{
+}

LiquidCrystal_I2C/examples/SerialDisplay/SerialDisplay.pde

@@ -0,0 +1,34 @@
+/*
+ * Displays text sent over the serial port (e.g. from the Serial Monitor) on
+ * an attached LCD.
+ * YWROBOT
+ *Compatible with the Arduino IDE 1.0
+ *Library version:1.1
+ */
+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
+
+void setup()
+{
+  lcd.init();                      // initialize the lcd 
+  lcd.backlight();
+  Serial.begin(9600);
+}
+
+void loop()
+{
+  // when characters arrive over the serial port...
+  if (Serial.available()) {
+    // wait a bit for the entire message to arrive
+    delay(100);
+    // clear the screen
+    lcd.clear();
+    // read all the available characters
+    while (Serial.available() > 0) {
+      // display each character to the LCD
+      lcd.write(Serial.read());
+    }
+  }
+}

LiquidCrystal_I2C/keywords.txt

@@ -0,0 +1,46 @@
+###########################################
+# Syntax Coloring Map For LiquidCrystal_I2C
+###########################################
+
+###########################################
+# Datatypes (KEYWORD1)
+###########################################
+
+LiquidCrystal_I2C	KEYWORD1
+
+###########################################
+# Methods and Functions (KEYWORD2)
+###########################################
+init	KEYWORD2
+begin	KEYWORD2
+clear	KEYWORD2
+home	KEYWORD2
+noDisplay	KEYWORD2
+display	KEYWORD2
+noBlink	KEYWORD2
+blink	KEYWORD2
+noCursor	KEYWORD2
+cursor	KEYWORD2
+scrollDisplayLeft	KEYWORD2
+scrollDisplayRight	KEYWORD2
+leftToRight	KEYWORD2
+rightToLeft	KEYWORD2
+shiftIncrement	KEYWORD2
+shiftDecrement	KEYWORD2
+noBacklight	KEYWORD2
+backlight	KEYWORD2
+autoscroll	KEYWORD2
+noAutoscroll	KEYWORD2
+createChar	KEYWORD2
+setCursor	KEYWORD2
+print	KEYWORD2
+blink_on	KEYWORD2
+blink_off	KEYWORD2
+cursor_on	KEYWORD2
+cursor_off	KEYWORD2
+setBacklight	KEYWORD2
+load_custom_character	KEYWORD2
+printstr	KEYWORD2
+###########################################
+# Constants (LITERAL1)
+###########################################

LiquidCrystal_I2C/library.json

@@ -0,0 +1,15 @@
+{
+  "name": "LiquidCrystal_I2C",
+  "keywords": "LCD, liquidcrystal, I2C",
+  "description": "A library for DFRobot I2C LCD displays",
+  "repository":
+  {
+    "type": "git",
+    "url": "https://github.com/marcoschwartz/LiquidCrystal_I2C.git"
+  },
+  "frameworks": "arduino",
+  "platforms":
+  [
+    "atmelavr"
+  ]
+}

LiquidCrystal_I2C/library.properties

@@ -0,0 +1,9 @@
+name=LiquidCrystal I2C
+version=1.1.2
+author=Frank de Brabander
+maintainer=Marco Schwartz <marcolivier.schwartz@gmail.com>
+sentence=A library for I2C LCD displays.
+paragraph= The library allows to control I2C displays with functions extremely similar to LiquidCrystal library. THIS LIBRARY MIGHT NOT BE COMPATIBLE WITH EXISTING SKETCHES.
+category=Display
+url=https://github.com/marcoschwartz/LiquidCrystal_I2C
+architectures=avr

Lsd_print/Lsd_print.cpp

@@ -0,0 +1,100 @@
+#include <avr/io.h>
+#include <util/delay.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <compat/twi.h>
+#include <inttypes.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <stdio.h>
+#include "lcdpcf8574.h"
+#include "pcf8574.h"
+#include "i2cmaster.h"
+#include "lsd.h"
+#include <Arduino.h>
+
+struct DisplayData {
+  char topLine[64];
+  int value1;
+  int value2;
+  int value3;
+};
+
+struct TextCounter {
+  unsigned long startTime;
+  int incrementValue;
+};
+
+TextCounter textCounter;
+
+void Lsd_inciliation() {
+  lcd_init(LCD_DISP_ON_BLINK); // инициализация дисплея
+  lcd_home(); // домой курсор
+  lcd_led(0); // вкл подсветки
+  textCounter.startTime = millis(); // Запоминаем время запуска программы
+}
+
+void fillBuffer1(const char * source, char * buffer, size_t bufferSize, int incrementValue) {
+  int startIndex = incrementValue % strlen(source); // Определяем начальный индекс на основе incrementValue
+  int endIndex = startIndex + 16;
+
+  if (endIndex > strlen(source)) {
+  // Если endIndex превышает длину строки source, переносим его на начало строки
+  endIndex = endIndex - strlen(source);
+
+  // Копируем символы с конца строки source
+  strncpy(buffer, source + startIndex, strlen(source) - startIndex);
+
+  // Копируем оставшиеся символы с начала строки source
+  strncat(buffer, source, endIndex);
+  } else {
+    strncpy(buffer, source + startIndex, endIndex - startIndex);
+  }
+  buffer[endIndex - startIndex] = '\0'; // Установка нулевого символа в конце буфера
+}
+
+void fillBuffer2(int value1, int value2, int value3, char * buffer, size_t bufferSize) {
+  snprintf(buffer, bufferSize, "%d.%d.%d", value1, value2, value3);
+}
+
+
+void printLsd(const char * inputText)
+{
+  unsigned long currentTime = millis(); // Текущее время
+  // Проверяем, прошло ли 500 мс с момента последнего увеличения incrementValue
+  if (currentTime - textCounter.startTime >= 500) {
+    textCounter.incrementValue++; // Увеличиваем incrementValue на 1
+    textCounter.startTime = currentTime; // Обновляем время
+  }
+
+  DisplayData displayData;
+  strncpy(displayData.topLine, inputText, sizeof(displayData.topLine) - 1);
+  displayData.topLine[sizeof(displayData.topLine) - 1] = '\0';
+  displayData.value1 = 500;
+  displayData.value2 = 800;
+  displayData.value3 = 855;
+
+  // Буферы для заполнения данных
+  char buffer1[17];
+  char buffer2[17];
+
+  // Заполнение буфера 1
+  fillBuffer1(displayData.topLine, buffer1, sizeof(buffer1), textCounter.incrementValue);
+
+  // Заполнение буфера 2
+  fillBuffer2(displayData.value1, displayData.value2, displayData.value3, buffer2, sizeof(buffer2));
+
+  // Создание массива для вывода на дисплей
+  char displayArray[32];
+  strncpy(displayArray, buffer1, 16); // Копирование первых 16 символов из buffer1 в displayArray
+  strncpy(displayArray + 16, buffer2, 16); // Копирование первых 16 символов из buffer2 в displayArray, начиная с позиции 16
+
+  // Вывод данных на экран
+  lcd_gotoxy(0, 0);
+  lcd_puts(displayArray);
+
+  lcd_gotoxy(0, 1);
+  lcd_puts(displayArray + 16); // Вывод второй половины displayArray
+}
+

Lsd_print/lsd.h

@@ -0,0 +1,8 @@
+#ifndef Lsd_print_h
+#define Lsd_print_h
+#include <Arduino.h>
+
+void Lsd_inciliation();
+void printLsd(const char* inputText);
+
+#endif

MyLCD/MyLCD.h

@@ -0,0 +1,22 @@
+
+#ifndef MYLCD_H_
+#define MYLCD_H_
+
+
+// ïîäêëþ÷àåì âñå ëèáû
+#include <avr/io.h>
+#include <util/delay.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <compat/twi.h>
+#include <inttypes.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <stdio.h>
+#include "lcdpcf8574.h"
+#include "pcf8574.h"
+#include "i2cmaster.h"
+
+
+#endif

MyLCD/i2cmaster.h

@@ -0,0 +1,42 @@
+#ifndef _I2CMASTER_H
+#define _I2CMASTER_H
+
+// флаг, отвечающий за чтение данных по i2c
+#define I2C_READ    1
+
+// флаг, отвечающий за отправку данных по i2c
+#define I2C_WRITE   0
+
+// частота тактирования линии в Герцах
+#define SCL_CLOCK 100000L
+
+// инициализация интерфейса
+void i2c_init(void);
+
+// передача условия СТОП на шину
+void i2c_stop(void);
+
+// передача условия СТАРТ на шину
+unsigned char i2c_start(unsigned char addr);
+
+// повторный старт(перезапуск)
+unsigned char i2c_rep_start(unsigned char addr);
+
+// ждем, если устрой-во занято, а потом передаем условие СТАРТ на шину
+void i2c_start_wait(unsigned char addr);
+
+ // отправка данных
+unsigned char i2c_write(unsigned char data);
+
+// читаем данные и продолжаем вещание
+unsigned char i2c_readAck(void);
+
+// читаем данные и после их получения передаем услови СТОП
+unsigned char i2c_readNak(void);
+
+// читаем данные с шины
+unsigned char i2c_read(unsigned char ack);
+
+// выбираем какой варинт чтения данных будет
+#define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak(); 
+#endif

MyLCD/keywords.txt

@@ -0,0 +1,10 @@
+lcd_init  KEYWORD2
+lcd_clrscr  KEYWORD2
+lcd_home  KEYWORD2
+lcd_gotoxy  KEYWORD2
+lcd_led  KEYWORD2
+lcd_putc  KEYWORD2
+lcd_puts  KEYWORD2
+lcd_puts_p  KEYWORD2
+lcd_command  KEYWORD2
+lcd_data  KEYWORD2

MyLCD/lcdpcf8574.cpp

@@ -0,0 +1,316 @@
+#include "MyLCD.h"
+
+// задержеки через асемблер
+#define lcd_e_delay()   __asm__ __volatile__( "rjmp 1f\n 1:" );
+#define lcd_e_toggle()  toggle_e()
+
+
+volatile uint8_t dataport = 0;
+
+static void toggle_e(void);
+
+// сама реализация задержек
+static inline void _delayFourCycles(unsigned int __count)
+{
+    if ( __count == 0 )    
+        __asm__ __volatile__( "rjmp 1f\n 1:" );    
+    else
+        __asm__ __volatile__ (
+    	    "1: sbiw %0,1" "\n\t"                  
+    	    "brne 1b"                              
+    	    : "=w" (__count)
+    	    : "0" (__count)
+    	   );
+}
+
+// тупа оборачиваем функцию в макрос
+#define delay(us)  _delayFourCycles( ( ( 1*(F_CPU/4000) )*us)/1000 )
+
+// переключение пина для начала записи команды
+static void toggle_e(void)
+{
+	pcf8574_setoutputpinhigh(LCD_PCF8574_DEVICEID, LCD_E_PIN);
+    lcd_e_delay();
+    pcf8574_setoutputpinlow(LCD_PCF8574_DEVICEID, LCD_E_PIN);
+}
+
+
+// отправка байта для контроллера LCD
+static void lcd_write(uint8_t data,uint8_t rs) 
+{
+	if (rs) //отправка данных (RS=1, RW=0)
+		dataport |= _BV(LCD_RS_PIN);
+	else // отпрака инструкций(RS=0, RW=0)
+		dataport &= ~_BV(LCD_RS_PIN);
+	dataport &= ~_BV(LCD_RW_PIN);
+	pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+
+	// отправка старшего полубайта
+    dataport &= ~_BV(LCD_DATA3_PIN);
+    dataport &= ~_BV(LCD_DATA2_PIN);
+    dataport &= ~_BV(LCD_DATA1_PIN);
+    dataport &= ~_BV(LCD_DATA0_PIN);
+	if(data & 0x80) dataport |= _BV(LCD_DATA3_PIN);
+	if(data & 0x40) dataport |= _BV(LCD_DATA2_PIN);
+	if(data & 0x20) dataport |= _BV(LCD_DATA1_PIN);
+	if(data & 0x10) dataport |= _BV(LCD_DATA0_PIN);
+	pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+	lcd_e_toggle();
+
+	// отправка младшего полубайта
+	dataport &= ~_BV(LCD_DATA3_PIN);
+	dataport &= ~_BV(LCD_DATA2_PIN);
+	dataport &= ~_BV(LCD_DATA1_PIN);
+	dataport &= ~_BV(LCD_DATA0_PIN);
+	if(data & 0x08) dataport |= _BV(LCD_DATA3_PIN);
+	if(data & 0x04) dataport |= _BV(LCD_DATA2_PIN);
+	if(data & 0x02) dataport |= _BV(LCD_DATA1_PIN);
+	if(data & 0x01) dataport |= _BV(LCD_DATA0_PIN);
+	pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+	lcd_e_toggle();
+
+	// завершаем передачу
+	dataport |= _BV(LCD_DATA0_PIN);
+	dataport |= _BV(LCD_DATA1_PIN);
+	dataport |= _BV(LCD_DATA2_PIN);
+	dataport |= _BV(LCD_DATA3_PIN);
+	pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+}
+
+// чтение байта
+static uint8_t lcd_read(uint8_t rs) 
+{
+    uint8_t data;
+
+    if (rs) // запись данных (RS=1, RW=0) 
+    	dataport |= _BV(LCD_RS_PIN);
+    else // запись инструкций (RS=0, RW=0)
+    	dataport &= ~_BV(LCD_RS_PIN);
+    dataport |= _BV(LCD_RW_PIN);
+    pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+
+    pcf8574_setoutputpinhigh(LCD_PCF8574_DEVICEID, LCD_E_PIN);
+	lcd_e_delay();
+	// чтение страшего полубайта
+	data = pcf8574_getoutputpin(LCD_PCF8574_DEVICEID, LCD_DATA0_PIN) << 4;   
+	pcf8574_setoutputpinlow(LCD_PCF8574_DEVICEID, LCD_E_PIN);
+
+	lcd_e_delay();                  
+
+	pcf8574_setoutputpinhigh(LCD_PCF8574_DEVICEID, LCD_E_PIN);
+	lcd_e_delay();
+	// чтение младшего полубайта
+	data |= pcf8574_getoutputpin(LCD_PCF8574_DEVICEID, LCD_DATA0_PIN) &0x0F; 
+	pcf8574_setoutputpinlow(LCD_PCF8574_DEVICEID, LCD_E_PIN);
+
+    return data;
+}
+
+// ждем пока ЖК освободится
+static uint8_t lcd_waitbusy(void)
+
+{
+    register uint8_t c;
+    
+    // ждем
+    while ( (c=lcd_read(0)) & (1<<LCD_BUSY)) {}
+    // задержка
+    delay(2);
+	// получаем адрес
+    return (lcd_read(0)); 
+}
+
+
+// перемещение курсора по строкам
+static inline void lcd_newline(uint8_t pos)
+{
+    register uint8_t addressCounter;
+
+
+#if LCD_LINES==1
+    addressCounter = 0;
+#endif
+#if LCD_LINES==2
+    if ( pos < (LCD_START_LINE2) )
+        addressCounter = LCD_START_LINE2;
+    else
+        addressCounter = LCD_START_LINE1;
+#endif
+#if LCD_LINES==4
+    if ( pos < LCD_START_LINE3 )
+        addressCounter = LCD_START_LINE2;
+    else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE4) )
+        addressCounter = LCD_START_LINE3;
+    else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE2) )
+        addressCounter = LCD_START_LINE4;
+    else 
+        addressCounter = LCD_START_LINE1;
+#endif
+    lcd_command((1<<LCD_DDRAM)+addressCounter);
+}
+
+// служебная функция для отправки команд дисплею
+void lcd_command(uint8_t cmd)
+{
+    lcd_waitbusy();
+    lcd_write(cmd,0);
+}
+
+// отправка байта на дисплей
+void lcd_data(uint8_t data)
+{
+    lcd_waitbusy();
+    lcd_write(data,1);
+}
+
+// перемещение курсора по координатам
+void lcd_gotoxy(uint8_t x, uint8_t y)
+{
+#if LCD_LINES==1
+    lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+x);
+#endif
+#if LCD_LINES==2
+    if ( y==0 ) 
+        lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+x);
+    else
+        lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+x);
+#endif
+#if LCD_LINES==4
+    if ( y==0 )
+        lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+x);
+    else if ( y==1)
+        lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+x);
+    else if ( y==2)
+        lcd_command((1<<LCD_DDRAM)+LCD_START_LINE3+x);
+    else
+        lcd_command((1<<LCD_DDRAM)+LCD_START_LINE4+x);
+#endif
+}
+
+// тырим координаты
+int lcd_getxy(void)
+{
+    return lcd_waitbusy();
+}
+
+// очистка дисплея
+void lcd_clrscr(void)
+{
+    lcd_command(1<<LCD_CLR);
+}
+
+// вкл и откл подсветки
+void lcd_led(uint8_t onoff)
+{
+	if(onoff)
+		dataport &= ~_BV(LCD_LED_PIN);
+	else
+		dataport |= _BV(LCD_LED_PIN);
+	pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+}
+
+// курсов в начало координат
+void lcd_home(void)
+{
+    lcd_command(1<<LCD_HOME);
+}
+
+// отображение символа в текущей позиции курсора
+void lcd_putc(char c)
+{
+    uint8_t pos;
+
+    pos = lcd_waitbusy();
+    if (c=='\n')
+    {
+        lcd_newline(pos);
+    }
+    else
+    {
+#if LCD_WRAP_LINES==1
+#if LCD_LINES==1
+        if ( pos == LCD_START_LINE1+LCD_DISP_LENGTH ) {
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE1,0);
+        }
+#elif LCD_LINES==2
+        if ( pos == LCD_START_LINE1+LCD_DISP_LENGTH ) {
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE2,0);    
+        }else if ( pos == LCD_START_LINE2+LCD_DISP_LENGTH ){
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE1,0);
+        }
+#elif LCD_LINES==4
+        if ( pos == LCD_START_LINE1+LCD_DISP_LENGTH ) {
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE2,0);    
+        }else if ( pos == LCD_START_LINE2+LCD_DISP_LENGTH ) {
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE3,0);
+        }else if ( pos == LCD_START_LINE3+LCD_DISP_LENGTH ) {
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE4,0);
+        }else if ( pos == LCD_START_LINE4+LCD_DISP_LENGTH ) {
+            lcd_write((1<<LCD_DDRAM)+LCD_START_LINE1,0);
+        }
+#endif
+        lcd_waitbusy();
+#endif
+        lcd_write(c, 1);
+    }
+}
+
+// вывод строки на дисплей
+void lcd_puts(const char *s)
+{
+    register char c;
+
+    while ( (c = *s++) ) {
+        lcd_putc(c);
+    }
+}
+
+// вывод строки из памяти
+void lcd_puts_p(const char *progmem_s)
+{
+    register char c;
+
+    while ( (c = pgm_read_byte(progmem_s++)) ) {
+        lcd_putc(c);
+    }
+}
+
+// инициализация дисплея
+void lcd_init(uint8_t dispAttr)
+{
+	#if LCD_PCF8574_INIT == 1
+	//инициализация pcf
+	pcf8574_init();
+	#endif
+
+	dataport = 0;
+	pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+
+    delay(16000);
+
+    // первоначальная запись на ЖК-дисплей — 8 бит
+    dataport |= _BV(LCD_DATA1_PIN);  // _BV(LCD_FUNCTION)>>4;
+    dataport |= _BV(LCD_DATA0_PIN);  // _BV(LCD_FUNCTION_8BIT)>>4;
+    pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+
+	// дрючим дисплей чтобы он начал работать
+    lcd_e_toggle();
+    delay(4992);
+    lcd_e_toggle();      
+    delay(64);        
+    lcd_e_toggle();      
+    delay(64);          
+
+    // переходим в 4 битный режим
+    dataport &= ~_BV(LCD_DATA0_PIN);
+    pcf8574_setoutput(LCD_PCF8574_DEVICEID, dataport);
+    lcd_e_toggle();
+    delay(64); 
+    
+
+    lcd_command(LCD_FUNCTION_DEFAULT);      // настраиваем кол-во строк
+    lcd_command(LCD_DISP_OFF);              // вырубаем дисплей
+    lcd_clrscr();                           // чистим экран
+    lcd_command(LCD_MODE_DEFAULT);          // запускаемся в стандартном режиме
+    lcd_command(dispAttr);                  // отправляем настройки
+}

MyLCD/lcdpcf8574.h

@@ -0,0 +1,110 @@
+#ifndef LCD_H
+#define LCD_H
+
+#define LCD_PCF8574_INIT 1 //èíèöèàëèçàöèÿ pcf
+
+#define LCD_PCF8574_DEVICEID 0 //id óñò-âà
+#define LCD_FUNCTION_DEFAULT    LCD_FUNCTION_4BIT_2LINES 
+
+// óñòàíîâêà ðåæèìà ââîäà: âêëþ÷åíèå/âûêëþ÷åíèå ñìåùåíèÿ äèñïëåÿ, íàïðàâëåíèå ïåðåìåùåíèÿ êóðñîðà óìåíüøàòü/óâåëè÷èâàòü
+#define LCD_ENTRY_DEC            0x04   // ñìåùåíèå äèñïëåÿ âûêëþ÷åíî, êóðñîð ïåðåìåùàåòñÿ ïî íàêëîíó
+#define LCD_ENTRY_DEC_SHIFT      0x05   // âêëþ÷åíèå ñäâèãà äèñïëåÿ, ïåðåìåùåíèå êóðñîðà ïî íàêëîíó
+#define LCD_ENTRY_INC_           0x06   // ñìåùåíèå äèñïëåÿ âûêëþ÷åíî, âêë. ïåðåìåùåíèå êóðñîðà â íàïðàâëåíèè
+#define LCD_ENTRY_INC_SHIFT      0x07   // âêëþ÷åíèå ñìåùåíèÿ äèñïëåÿ, óâåëè÷åíèå íàïðàâëåíèÿ ïåðåìåùåíèÿ êóðñîðà
+
+// âêëþ÷åíèå/âûêëþ÷åíèå äèñïëåÿ, âêëþ÷åíèå/âûêëþ÷åíèå êóðñîðà, ìèãàþùèé ñèìâîë â ïîçèöèè êóðñîðà
+#define LCD_DISP_OFF             0x08   // äèñïëåé âûêëþ÷åí
+#define LCD_DISP_ON              0x0C   // äèñïëåé âêë, êóðñîð âûêë
+#define LCD_DISP_ON_BLINK        0x0D   // äèñïëåé âêë, êóðñîð âûêë, åñòü ìèãàþùèé ñèìâë
+#define LCD_DISP_ON_CURSOR       0x0E   // äèñïëåé âêë, êóðñîð âêë
+#define LCD_DISP_ON_CURSOR_BLINK 0x0F   // äèñïëåé âêë, êóðñîð âêë, åñòü ìèãàþùèé ñèìâë
+
+// ïåðåìåùåíèå êóðñîðà/ñìåùåíèå äèñïëåÿ
+#define LCD_MOVE_CURSOR_LEFT     0x10   // êóðñîð íàëåâî
+#define LCD_MOVE_CURSOR_RIGHT    0x14   // êóðñîð íàïðàâî
+#define LCD_MOVE_DISP_LEFT       0x18   // ñäâèã âëåâî
+#define LCD_MOVE_DISP_RIGHT      0x1C   // ñäâèã âïðàâî
+
+// íàáîð ôóíêöèé: óñòàíîâêà äëèíû äàííûõ èíòåðôåéñà è êîëè÷åñòâà ñòðîê îòîáðàæåíèÿ
+#define LCD_FUNCTION_4BIT_1LINE  0x20   // 4-áèòíûé èíòåðôåéñ, îäíà ñòðîêà, 5x7 òî÷åê
+#define LCD_FUNCTION_4BIT_2LINES 0x28   // 4-áèòíûé èíòåðôåéñ, äâóõñòðî÷íûé, 5x7 òî÷åê
+#define LCD_FUNCTION_8BIT_1LINE  0x30   // 8-áèòíûé èíòåðôåéñ, îäíà ñòðîêà, 5x7 òî÷åê
+#define LCD_FUNCTION_8BIT_2LINES 0x38   // 8-áèòíûé èíòåðôåéñ, äâóõñòðî÷íûé, 5x7 òî÷åê
+
+#define LCD_LINES           2	  // êîë-âî ñòðîê
+#define LCD_DISP_LENGTH    16     // êîë-âî ñèìâîëîâ â ñòðîêå
+#define LCD_LINE_LENGTH  0x40	  // âíóòðåííÿÿ äëèíà ñòðîêè äèñïëåÿ
+#define LCD_START_LINE1  0x00     // DDRM àäðåñ äëÿ 1 ñòðîêè
+#define LCD_START_LINE2  0x40     // DDRM àäðåñ äëÿ 2 ñòðîêè
+#define LCD_WRAP_LINES      1     // ïåðåíîñ ñòðîêè
+
+
+
+#define LCD_DATA0_PIN    4            // ïèí äëÿ äàííûõ
+#define LCD_DATA1_PIN    5            // ïèí äëÿ äàííûõ
+#define LCD_DATA2_PIN    6            // ïèí äëÿ äàííûõ
+#define LCD_DATA3_PIN    7            // ïèí äëÿ äàííûõ
+#define LCD_RS_PIN       0            // ïèí ëèíèè RS
+#define LCD_RW_PIN       1            // ïèí ëèíèè RW
+#define LCD_E_PIN        2            // ïèí ëèíèè òàêòèðîâàíèÿ
+#define LCD_LED_PIN      3            // ïèí ïîäñâåòêè
+
+
+// Ïîçèöèè áèòîâ ðåãèñòðà êîìàíä HD44780U.
+#define LCD_CLR               0      // îò÷èñòèòü äèñïëåé
+#define LCD_HOME              1      // âåðíóòü êóðñîð äîìîé
+#define LCD_ENTRY_MODE        2      // óñòàíîâêà ðåæèìà ââîäà
+#define LCD_ENTRY_INC         1      // èíêðåìåíò
+#define LCD_ENTRY_SHIFT       0      // âêë ñìåùåíèå
+#define LCD_ON                3      // âêë êóðñîðà
+#define LCD_ON_DISPLAY        2      // âûêë äèñïëåé
+#define LCD_ON_CURSOR         1      // âûêë êóðñîð
+#define LCD_ON_BLINK          0      // ìèãàíèå êóðñîðà
+#define LCD_MOVE              4      // ïåðåäâèæåíèå êóðñîðà
+#define LCD_MOVE_DISP         3      // ïåðåäâèæåíèå êóðñîðà
+#define LCD_MOVE_RIGHT        2      // ïåðåäâèæåíèå êóðñîðà íàïðàâî
+#define LCD_FUNCTION          5      // íàñòðîéêà ôóíêöèé
+#define LCD_FUNCTION_8BIT     4      // 8 áèòíûé ðåæèì
+#define LCD_FUNCTION_2LINES   3      // àêòèâàöèÿ ñòðîê
+#define LCD_FUNCTION_10DOTS   2      // øðèôòû
+#define LCD_CGRAM             6      // óñòàíîâêà àäðåñà CG RAM
+#define LCD_DDRAM             7      // óñòàíîâêà àäðåñà DD RAM
+#define LCD_BUSY              7      // äèñïëåé çàíÿò
+
+// ñòàíäàðòíûé ðåæèì
+#define LCD_MODE_DEFAULT     ((1<<LCD_ENTRY_MODE) | (1<<LCD_ENTRY_INC) )
+
+// èíèöèàëèçàöèÿ äèñïëåÿ
+void lcd_init(uint8_t dispAttr);
+
+// î÷èñòêà äèñïëåÿ
+void lcd_clrscr(void);
+
+// êóðñîâ â íà÷àëî êîîðäèíàò
+void lcd_home(void);
+
+// ïåðåìåùåíèå êóðñîðà ïî êîîðäèíàòàì
+void lcd_gotoxy(uint8_t x, uint8_t y);
+
+// âêë è îòêë ïîäñâåòêè
+void lcd_led(uint8_t onoff);
+
+// îòîáðàæåíèå ñèìâîëà â òåêóùåé ïîçèöèè êóðñîðà
+void lcd_putc(char c);
+
+// âûâîä ñòðîêè íà äèñïëåé
+void lcd_puts(const char *s);
+
+// âûâîä ñòðîêè èç ïàìÿòè
+void lcd_puts_p(const char *progmem_s);
+
+// ñëóæåáíàÿ ôóíêöèÿ äëÿ îòïðàâêè êîìàíä äèñïëåþ
+void lcd_command(uint8_t cmd);
+
+// îòïðàâêà áàéòà íà äèñïëåé
+void lcd_data(uint8_t data);
+
+// ìàêðîñû äëÿ àâòîìàòè÷åñêîãî ñîõðàíåíèÿ ñòðîêîâîé êîíñòàíòû â ïàìÿòè ïðîãðàììû
+#define lcd_puts_P(__s)         lcd_puts_p(PSTR(__s))
+
+#endif

MyLCD/pcf8574.cpp

@@ -0,0 +1,115 @@
+#include "MyLCD.h"
+uint8_t pcf8574_pinstatus[PCF8574_MAXDEVICES];
+
+// инициализация pcf
+void pcf8574_init() {
+	#if PCF8574_I2CINIT == 1
+	// инитим i2c
+	i2c_init();
+	_delay_us(10);
+	#endif
+	uint8_t i = 0;
+	for(i=0; i<PCF8574_MAXDEVICES; i++)
+		pcf8574_pinstatus[i] = 0;
+
+}
+
+// получаем статус вывода
+int8_t pcf8574_getoutput(uint8_t deviceid) {
+	int8_t data = -1;
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES)) {
+		data = pcf8574_pinstatus[deviceid];
+	}
+	return data;
+}
+
+// получаем статус пинов вывода
+int8_t pcf8574_getoutputpin(uint8_t deviceid, uint8_t pin) {
+	int8_t data = -1;
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES) && (pin >= 0 && pin < PCF8574_MAXPINS)) {
+		data = pcf8574_pinstatus[deviceid];
+		data = (data >> pin) & 0b00000001;
+	}
+	return data;
+}
+
+// настройка вывода
+int8_t pcf8574_setoutput(uint8_t deviceid, uint8_t data) {
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES)) {
+		pcf8574_pinstatus[deviceid] = data;
+		i2c_start(((PCF8574_ADDRBASE+deviceid)<<1) | I2C_WRITE);
+		i2c_write(data);
+		i2c_stop();
+		return 0;
+	}
+	return -1;
+}
+
+// установить выходные контакты, заменить фактический статус устройства из pinstart для i2c
+int8_t pcf8574_setoutputpins(uint8_t deviceid, uint8_t pinstart, uint8_t pinlength, int8_t data) {
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES) && (pinstart - pinlength + 1 >= 0 && pinstart - pinlength + 1 >= 0 && pinstart < PCF8574_MAXPINS && pinstart > 0 && pinlength > 0)) {
+	    uint8_t b = 0;
+	    b = pcf8574_pinstatus[deviceid];
+	    uint8_t mask = ((1 << pinlength) - 1) << (pinstart - pinlength + 1);
+		data <<= (pinstart - pinlength + 1);
+		data &= mask;
+		b &= ~(mask);
+		b |= data;
+	    pcf8574_pinstatus[deviceid] = b;
+	    //рестартим
+		i2c_start(((PCF8574_ADDRBASE+deviceid)<<1) | I2C_WRITE);
+		i2c_write(b);
+		i2c_stop();
+		return 0;
+	}
+	return -1;
+}
+
+// настройка пинов вывода
+int8_t pcf8574_setoutputpin(uint8_t deviceid, uint8_t pin, uint8_t data) {
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES) && (pin >= 0 && pin < PCF8574_MAXPINS)) {
+	    uint8_t b = 0;
+	    b = pcf8574_pinstatus[deviceid];
+	    b = (data != 0) ? (b | (1 << pin)) : (b & ~(1 << pin));
+	    pcf8574_pinstatus[deviceid] = b;
+	    //рестартим
+		i2c_start(((PCF8574_ADDRBASE+deviceid)<<1) | I2C_WRITE);
+		i2c_write(b);
+		i2c_stop();
+		return 0;
+	}
+	return -1;
+}
+
+// установка высокого уровня на выходных пинах
+int8_t pcf8574_setoutputpinhigh(uint8_t deviceid, uint8_t pin) {
+	return pcf8574_setoutputpin(deviceid, pin, 1);
+}
+
+// установка низкого уровня на выходных пинах
+int8_t pcf8574_setoutputpinlow(uint8_t deviceid, uint8_t pin) {
+	return pcf8574_setoutputpin(deviceid, pin, 0);
+}
+
+// получение входных данных
+int8_t pcf8574_getinput(uint8_t deviceid) {
+	int8_t data = -1;
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES)) {
+		i2c_start(((PCF8574_ADDRBASE+deviceid)<<1) | I2C_READ);
+		data = ~i2c_readNak();
+		i2c_stop();
+	}
+	return data;
+}
+
+// получение входного контакта (высокий или низкий)
+int8_t pcf8574_getinputpin(uint8_t deviceid, uint8_t pin) {
+	int8_t data = -1;
+	if((deviceid >= 0 && deviceid < PCF8574_MAXDEVICES) && (pin >= 0 && pin < PCF8574_MAXPINS)) {
+		data = pcf8574_getinput(deviceid);
+		if(data != -1) {
+			data = (data >> pin) & 0b00000001;
+		}
+	}
+	return data;
+}

MyLCD/pcf8574.h

@@ -0,0 +1,21 @@
+#ifndef PCF8574_H_
+#define PCF8574_H_
+
+#define PCF8574_ADDRBASE (0x27) // àäðåñ óñò-âà
+
+#define PCF8574_I2CINIT 1 // èíèöèàëèçàöèÿ i2c
+
+#define PCF8574_MAXDEVICES 1 // ìàêñ êîë-âî óòðîéñòâ
+#define PCF8574_MAXPINS 8 // ìàêñ êîë-âî ïèíîâ
+
+void pcf8574_init();
+int8_t pcf8574_getoutput(uint8_t deviceid);
+int8_t pcf8574_getoutputpin(uint8_t deviceid, uint8_t pin);
+int8_t pcf8574_setoutput(uint8_t deviceid, uint8_t data);
+int8_t pcf8574_setoutputpins(uint8_t deviceid, uint8_t pinstart, uint8_t pinlength, int8_t data);
+int8_t pcf8574_setoutputpin(uint8_t deviceid, uint8_t pin, uint8_t data);
+int8_t pcf8574_setoutputpinhigh(uint8_t deviceid, uint8_t pin);
+int8_t pcf8574_setoutputpinlow(uint8_t deviceid, uint8_t pin);
+int8_t pcf8574_getinput(uint8_t deviceid);
+int8_t pcf8574_getinputpin(uint8_t deviceid, uint8_t pin);
+#endif

MyLCD/twimaster.cpp

@@ -0,0 +1,117 @@
+#include "MyLCD.h"
+
+// инициализация интерфейса i2c
+void i2c_init(void)
+{
+  // предделитель тактовой частоты равен 1 
+  TWSR = 0;     
+  // рассчет скорости передачи данных                   
+  TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
+}
+
+// передача условия СТАРТ на шину
+unsigned char i2c_start(unsigned char address)
+{
+    uint8_t   twst;
+	
+	// отправка условия СТАРТ
+	TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+	// ожидание завершения передачи условия СТАРТ
+	while(!(TWCR & (1<<TWINT)));
+	// проверка значений регистра
+	twst = TW_STATUS & 0xF8;
+	if ( (twst != TW_START) && (twst != TW_REP_START)) return 1;
+	// отправка адреса устрой-ва
+	TWDR = address;
+	TWCR = (1<<TWINT) | (1<<TWEN);
+	// ожидание ответа от ведомого уст-ва
+	while(!(TWCR & (1<<TWINT)));
+	// проверка полученных значений
+	twst = TW_STATUS & 0xF8;
+	if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
+
+	return 0;
+
+}
+
+// ждем, если устрой-во занято, а потом передаем условие СТАРТ на шину
+void i2c_start_wait(unsigned char address)
+{
+    uint8_t   twst;
+
+    for(;;)
+    {
+	    // отправка условия СТАРТ
+	    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+    	// ожидание завершения передачи условия СТАРТ
+    	while(!(TWCR & (1<<TWINT)));
+    	// проверка значений регистра
+    	twst = TW_STATUS & 0xF8;
+    	if ( (twst != TW_START) && (twst != TW_REP_START)) continue;
+    	// отправка адреса устрой-ва
+    	TWDR = address;
+    	TWCR = (1<<TWINT) | (1<<TWEN);
+    	 // ожидание ответа от ведомого уст-ва
+    	while(!(TWCR & (1<<TWINT)));
+    	// проверка занято ли ведомое уст-во
+    	twst = TW_STATUS & 0xF8;
+    	if ( (twst == TW_MT_SLA_NACK )||(twst ==TW_MR_DATA_NACK) ) 
+    	{    	    
+    	    // устройство занято, отправьте условие остановки для прекращения операции записи
+	        TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+	        // ждем освобождения шины
+	        while(TWCR & (1<<TWSTO));
+    	    continue;
+    	}
+    	break;
+     }
+}
+
+// тупа повторяем условие СТАРТ
+unsigned char i2c_rep_start(unsigned char address)
+{
+    return i2c_start(address);
+}
+
+// передача условия СТОП на шину
+void i2c_stop(void)
+{
+    // отправка условия СТОП
+	TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+	// ждем выполнения условия остановки
+	while(TWCR & (1<<TWSTO));
+}
+
+// отправка данных, если функция вернет 0, то все успешно, иначе нет
+unsigned char i2c_write( unsigned char data )
+{	
+    uint8_t   twst;
+    
+	// отправляем данные на уст-во
+	TWDR = data;
+	TWCR = (1<<TWINT) | (1<<TWEN);
+	// ждем завершения передачи
+	while(!(TWCR & (1<<TWINT)));
+	// записываем ответ от ведомого уст-ва
+	twst = TW_STATUS & 0xF8;
+	if( twst != TW_MT_DATA_ACK) return 1;
+	return 0;
+}
+
+// читаем данные и продолжаем вещание
+unsigned char i2c_readAck(void)
+{
+	TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
+	while(!(TWCR & (1<<TWINT)));    
+
+    return TWDR;
+}
+
+// читаем данные и после их получения передаем услови СТОП
+unsigned char i2c_readNak(void)
+{
+	TWCR = (1<<TWINT) | (1<<TWEN);
+	while(!(TWCR & (1<<TWINT)));
+	
+    return TWDR;
+}

UART/circular_buf.c

@@ -3,7 +3,7 @@
 #include "circular_buf.h"
 
 
-void clear_buffer(struct circular_buffer* cb) {
+void initialize_buffer(struct circular_buffer* cb) {
 	cb->buf_head = 0;
 	cb->buf_tail = 0;
 }

UART/circular_buf.h

@@ -9,7 +9,7 @@ struct circular_buffer{
 	unsigned char buf_tail;
 };
 
-void clear_buffer(struct circular_buffer* cb);
+void initialize_buffer(struct circular_buffer* cb);
 int buffer_empty(const struct circular_buffer* cb);
 int buffer_full(const struct circular_buffer* cb);
 void write_buffer(struct circular_buffer* cb, int value);

UART/timer.c

@@ -0,0 +1,21 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+static volatile unsigned long timerMillis = 0;
+
+void timerInit() {
+	TCCR1B |= (1 << WGM12) | (1 << CS11) | (1 << CS10);
+	OCR1A = 250;
+	TIMSK1 |= (1 << OCIE1A);
+	sei();
+}
+
+unsigned long millis() {
+	unsigned long ms;
+	ms = timerMillis;
+	return ms;
+}
+
+ISR(TIMER1_COMPA_vect) {
+	timerMillis++;
+}

UART/timer.h

@@ -0,0 +1,7 @@
+#ifndef TIMER_H
+#define TIMER_H
+
+void timerInit();
+unsigned long millis();
+
+#endif // TIMER_H

UART/uart.c

@@ -2,14 +2,12 @@
 #include <avr/interrupt.h>
 #include <stdint.h>
 #include <string.h>
+#include "timer.h"
 #include "circular_buf.h"
 #include "uart.h"
 
-struct circular_buffer uartRxBuffer;
-struct circular_buffer uartTxBuffer;
-
 void UART_init(void) {
-	UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0) | (1<<TXCIE0) | (1 << UDRIE0); // прерывание по приему и передаче
+	UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0) | (1 << UDRIE0); // прерывание по приему и опустошению буфера передачи
 	UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
 	UBRR0H = 0;
 	UBRR0L = 103;
@@ -17,47 +15,50 @@ void UART_init(void) {
 
 void UART_send(uint8_t* data, size_t length) {
 	for (size_t i = 0; i < length; i++) {
-		if (!buffer_full(&uartTxBuffer)) {
+		if (!buffer_full(&usartTxBuffer)) {
-			write_buffer(&uartTxBuffer, data[i]);
+			write_buffer(&usartTxBuffer, data[i]);
 			} else {
 			break; // если буфер передачи заполнен, то отправка прерывается
 		}
 	}
-	UCSR0B |= (1 << TXCIE0); // включаем прерывание по завершении передачи
+	UCSR0B |= (1 << UDRIE0); // Включаем прерывание по опустошению буфера
-	clear_buffer(&uartTxBuffer);
 }
 
 // Получение данных из буфера
 int UART_receive(uint8_t* data, size_t length) {
-    char overflow = 0;  // Флаг переполнения, который устанавливается, если превышен размер массива 
+	char overflow=0; // Флаг переполнения, который устанавливается, если превышен размер массива 
-    uint32_t byteCount = 0;  // Счетчик байтов, принятых из буфера приема
+	uint32_t byteCount=0; // Счетчик байтов, принятых из буфера приема
-    // Пока буфер приема не пуст и не превышен лимит длины массива,
+	uint32_t timeout_ms = 4; // Таймаут в миллисекундах для общего времени приема данных
-    // функция продолжает читать байты из буфера и сохранять их в массив data.
+	uint32_t start_time = millis();
-    while (!buffer_empty(&uartRxBuffer) && byteCount < length) {
+	//Цикл приема данных с таймаутом
-        int reader = read_buffer(&uartRxBuffer);  // Прием и запись символа в переменную
+	while(1)
-        data[byteCount] = reader;  // Запись в массив с индексом byteCount
+	{
-        byteCount++;
+		// Пока буфер приема не пуст и не истек таймаут общего времени,  
-    }
+		// функция продолжает читать байты из буфера и сохранять их в массив data.
-    // Проверка переполнения
+		while (!buffer_empty(&usartRxBuffer)) {
-    if (byteCount > length) {
+			int  reader = read_buffer(&usartRxBuffer);//прием и запись символа в переменную
-        overflow = 1;
+			if(byteCount<=length){
-    }
+				data[byteCount] = reader; // запись в массив с индексом byteCount
-	clear_buffer(&uartRxBuffer);
+			}
-    return overflow ? -1 : byteCount;  // Возвращает количество успешно принятых байт или -1 в случае переполнения
+			else{
+				overflow=1;
+			}
+			byteCount++;
+
+			start_time = millis();
+		}
+		if ((millis() - start_time) > timeout_ms) { // если превышение времени в 4 ms
+			break;
+		}
+		
+	}
+	return overflow?-1:byteCount; // возвращает количество успешно принятых байт или -1
 }
 
 // прерывание по завершению приема
 ISR(USART_RX_vect) {
 	uint8_t data = UDR0; // читаем из регистра UDR0
-	if (!buffer_full(&uartRxBuffer)) {
+	if (!buffer_full(&usartRxBuffer)) {
-		write_buffer(&uartRxBuffer, data);// записываем символ в буфер приема
+		write_buffer(&usartRxBuffer, data);// записываем символ в буфер приема
 	}
 }
-
-ISR(USART_TX_vect) {
-	if (!buffer_empty(&uartTxBuffer)) {
-		UDR0 = read_buffer(&uartTxBuffer);
-	} else {
-		UCSR0B &= ~(1 << TXCIE0); // отключаем прерывание, когда все данные отправлены
-	}
-}

UART/uart.h

@@ -2,9 +2,14 @@
 #define UART_H
 #include <stdint.h> 
 #include <stddef.h>
+#include "timer.h" 
+#include "circular_buf.h" 
 
 #define F_CPU 16000000
 
+struct circular_buffer usartRxBuffer;
+struct circular_buffer usartTxBuffer;
+
 void UART_init(void);
 void UART_send(uint8_t* data, size_t length);
 int UART_receive(uint8_t* data, size_t length);

hdlc/client.c

@@ -0,0 +1,132 @@
+#include "client.h"
+#include "hdlc.h"
+#include "stdio.h"
+
+#define ERR_INVALID_DATA_SIZE -1
+#define ERR_ALL_BUFFERS_FILL -2
+#define ERR_INVALID_PARAMS -3
+#define ERR_INVALID_STATE -4
+#define ERR_FRAME_TIME_OUT -5
+#define ERR_INVALID_SEQ_NUMBER_FRAME -6
+#define ERR_TIMEOUT_ANSWER -7
+
+#define SIZE_DATA_BUFFERS 64
+
+int connecting_frame_timeout_bf;
+
+void init_hdlc_client(struct Client* client, int connecting_frame_timeout){
+    client->state = IDLE_STATE;
+    client->connecting_frame_timeout = connecting_frame_timeout;
+    connecting_frame_timeout_bf = connecting_frame_timeout;
+    client->current_index_frame = 20;
+
+//    client->current_state_hdlc.control_escape = 0;
+//    client->current_state_hdlc.fcs = FCS_INIT_VALUE;
+//    client->current_state_hdlc.start_index = -1;
+//    client->current_state_hdlc.end_index = -1;
+//    client->current_state_hdlc.src_index = 0;
+//    client->current_state_hdlc.dest_index = 0;
+}
+
+void hdlc_connect(struct Client* client){
+    client->state = CONNECTING;
+
+    client->frameS.seq_no = 0;
+    client->frameS.frame = S_FRAME;
+    client->current_index_frame = client->frameS.seq_no;
+}
+
+int hdlc_send_data(struct Client* client, uint8_t* data, size_t data_len){
+    if (client->state != READY_STATE){
+        return ERR_INVALID_STATE;
+    }
+
+    client->state = RECIVING;
+
+    if (SIZE_DATA_BUFFERS < data_len){
+        return ERR_INVALID_DATA_SIZE;
+    }
+
+    client->frameI.seq_no = 0;
+    client->frameI.frame = I_FRAME;
+    client->data_i_frame = *data;
+    client->len_data_i_frame = data_len;
+    client->current_index_frame = client->frameI.seq_no;
+
+    client->state = RECIVING;
+    return 0;
+}
+
+int hdlc_get_raw_frame(struct Client *client, uint8_t* buffer, size_t lenBuffer) {
+    if(client->state == RECIVING){
+        int ret = hdlc_frame_data(client->frameI, &client->data_i_frame,
+                                  client->len_data_i_frame, buffer, &lenBuffer);
+        if (ret < 0){
+            printf("err in get_frame: %d\n", ret);
+        }
+    }
+
+    if (client->state == CONNECTING){
+        int ret = hdlc_frame_data(client->frameS, NULL, 0, buffer, &lenBuffer);
+
+        if (ret < 0){
+            printf("err in get_frame: %d\n", ret);
+        }
+    }
+
+    if (client->state == DISCONNECTING){
+        int ret = hdlc_frame_data(client->frame_rej, NULL, 0, buffer, &lenBuffer);
+
+        if (ret < 0){
+            printf("err in get_frame: %d\n", ret);
+        }
+    }
+
+    return 0;
+}
+
+int hdlc_decode_recived_raw_data(struct Client* client, uint8_t* buffer, size_t len_buffer, uint8_t* recived_data, size_t* len_recived_data){
+    hdlc_control_t recv_control;
+    uint8_t recive[len_buffer];
+
+    int ret = hdlc_get_data(&recv_control, buffer, len_buffer, &recive,
+                            &len_buffer);
+
+    if (ret < 0) {
+        return ret;
+    }
+
+    if (recv_control.seq_no != client->current_index_frame){
+        client->state = DISCONNECTING;
+        client->frame_rej.seq_no = 0;
+        client->frame_rej.frame = S_FRAME_NACK;
+        return ERR_INVALID_SEQ_NUMBER_FRAME;
+    }
+
+    switch (recv_control.frame) {
+        case S_FRAME:
+            client->state = READY_STATE;
+            break;
+        case I_FRAME:
+            *recived_data = buffer[3];
+            *len_recived_data = sizeof(buffer[3]);
+            break;
+        case S_FRAME_NACK:
+            client->state = DISCONNECTING;
+            client->frame_rej.seq_no = 0;
+            client->frame_rej.frame = S_FRAME_NACK;
+            return ERR_INVALID_SEQ_NUMBER_FRAME;
+    }
+
+    client->connecting_frame_timeout = connecting_frame_timeout_bf;
+    return 0;
+}
+
+int hdlc_timeout_handler(struct Client* client, int delta_time){
+    client->connecting_frame_timeout -= delta_time;
+
+    if (client->connecting_frame_timeout <= 0){
+        return ERR_FRAME_TIME_OUT;
+    }
+    return 0;
+}

hdlc/client.h

@@ -0,0 +1,40 @@
+#ifndef CLIENT_H
+#define CLIENT_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "hdlc.h"
+
+enum HDLCState {
+    UNINITIALIZED_STATE = 0,  // состояние до инцилизации
+    IDLE_STATE, // Состояние ожидания начала
+    READY_STATE, // Состояние принятия
+    CONNECTING, // состояние соединения
+    DISCONNECTING, // состояния отключения
+    RECIVING // состояние приема и отправки
+};
+
+struct Client{
+    enum HDLCState state;
+    int connecting_frame_timeout; //-1
+    uint8_t current_index_frame;
+    //hdlc_state_t current_state_hdlc;
+    hdlc_control_t frameS;
+    hdlc_control_t frameI;
+    uint8_t data_i_frame;
+    size_t len_data_i_frame;
+//    hdlc_control_t frame3;
+//    hdlc_control_t frame4;
+    hdlc_control_t frame_rej;
+};
+
+//название функций
+void init_hdlc_client(struct Client* client, int connecting_frame_timeout);
+void hdlc_connect(struct Client* client);
+int hdlc_send_data(struct Client* client, uint8_t* data, size_t data_len);
+int hdlc_get_raw_frame(struct Client *client, uint8_t* buffer, size_t lenBuffer);
+//принимает буффер с уарта
+int hdlc_decode_recived_raw_data(struct Client* client, uint8_t* buffer, size_t len_buffer, uint8_t* recived_data, size_t* len_recived_data);
+int hdlc_timeout_handler(struct Client* client, int delta_time);
+
+#endif //CLIENT_H

hdlc/fcs.c

@@ -0,0 +1,41 @@
+#include "fcs.h"
+
+/*
+ *    CRC-Type:     CRC16 CCIT
+ *    Polynomial:   0x1021 (x^16+x^12+x^5+1)
+ *    Lookup Table: Reflected
+ */
+static const unsigned short fcstab[256] = {
+        0x0000, 0x1189, 0x2312, 0x329b,
+        0x4624, 0x57ad, 0x6536, 0x74bf, 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c,
+        0xdbe5, 0xe97e, 0xf8f7, 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c,
+        0x75b7, 0x643e, 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff,
+        0xe876, 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
+        0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, 0x3183,
+        0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, 0xbdcb, 0xac42,
+        0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, 0x4204, 0x538d, 0x6116,
+        0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, 0xce4c, 0xdfc5, 0xed5e, 0xfcd7,
+        0x8868, 0x99e1, 0xab7a, 0xbaf3, 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1,
+        0x0528, 0x37b3, 0x263a, 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960,
+        0xbbfb, 0xaa72, 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630,
+        0x17b9, 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
+        0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, 0xffcf,
+        0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, 0x8408, 0x9581,
+        0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, 0x0840, 0x19c9, 0x2b52,
+        0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, 0x9489, 0x8500, 0xb79b, 0xa612,
+        0xd2ad, 0xc324, 0xf1bf, 0xe036, 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5,
+        0x4f6c, 0x7df7, 0x6c7e, 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7,
+        0xc03c, 0xd1b5, 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74,
+        0x5dfd, 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
+        0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, 0xc60c,
+        0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, 0x4a44, 0x5bcd,
+        0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, 0xd68d, 0xc704, 0xf59f,
+        0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, 0x5ac5, 0x4b4c, 0x79d7, 0x685e,
+        0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a,
+        0xb0a3, 0x8238, 0x93b1, 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb,
+        0x0e70, 0x1ff9, 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9,
+        0x8330, 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 };
+
+FCS_SIZE calc_fcs(FCS_SIZE fcs, unsigned char value) {
+    return (fcs >> 8) ^ fcstab[(fcs ^ value) & 0xff];
+}

hdlc/fcs.h

@@ -0,0 +1,18 @@
+#ifndef FCS_H
+#define FCS_H
+
+#define FCS_INIT_VALUE 0xFFFF /* FCS initialization value. */
+#define FCS_GOOD_VALUE 0xF0B8 /* FCS value for valid frames. */
+#define FCS_INVERT_MASK 0xFFFF /* Invert the FCS value accordingly to the specification */
+#define FCS_SIZE unsigned short
+
+/**
+ * Calculates a new FCS based on the current value and value of data.
+ *
+ * @param fcs Current FCS value
+ * @param value The value to be added
+ * @returns Calculated FCS value
+ */
+FCS_SIZE calc_fcs(FCS_SIZE fcs, unsigned char value);
+
+#endif

hdlc/hdlc.c

@@ -0,0 +1,261 @@
+#include "hdlc.h"
+
+// HDLC Control field bit positions
+#define HDLC_CONTROL_S_OR_U_FRAME_BIT 0
+#define HDLC_CONTROL_SEND_SEQ_NO_BIT 1
+#define HDLC_CONTROL_S_FRAME_TYPE_BIT 2
+#define HDLC_CONTROL_POLL_BIT 4
+#define HDLC_CONTROL_RECV_SEQ_NO_BIT 5
+
+// HDLC Control type definitions
+#define HDLC_CONTROL_TYPE_RECEIVE_READY 0
+#define HDLC_CONTROL_TYPE_RECEIVE_NOT_READY 1
+#define HDLC_CONTROL_TYPE_REJECT 2
+#define HDLC_CONTROL_TYPE_SELECTIVE_REJECT 3
+
+static hdlc_state_t hdlc_state = {
+        .control_escape = 0,
+        .fcs = FCS_INIT_VALUE,
+        .start_index = -1,
+        .end_index = -1,
+        .src_index = 0,
+        .dest_index = 0,
+};
+
+int hdlc_set_state(hdlc_state_t *state) {
+    if (!state) {
+        return -EINVAL;
+    }
+
+    hdlc_state = *state;
+    return 0;
+}
+
+
+int hdlc_get_state(hdlc_state_t *state) {
+    if (!state) {
+        return -EINVAL;
+    }
+
+    *state = hdlc_state;
+    return 0;
+}
+
+void hdlc_escape_value(char value, char *dest, int *dest_index) {
+    // Check and escape the value if needed
+    if ((value == HDLC_FLAG_SEQUENCE) || (value == HDLC_CONTROL_ESCAPE)) {
+        dest[(*dest_index)++] = HDLC_CONTROL_ESCAPE;
+        value ^= 0x20;
+    }
+
+    // Add the value to the destination buffer and increment destination index
+    dest[(*dest_index)++] = value;
+}
+
+hdlc_control_t hdlc_get_control_type(unsigned char control) {
+    hdlc_control_t value;
+
+    // Check if the frame is a S-frame (or U-frame)
+    if (control & (1 << HDLC_CONTROL_S_OR_U_FRAME_BIT)) {
+        // Check if S-frame type is a Receive Ready (ACK)
+        if (((control >> HDLC_CONTROL_S_FRAME_TYPE_BIT) & 0x3)
+            == HDLC_CONTROL_TYPE_RECEIVE_READY) {
+            value.frame = S_FRAME;
+        } else {
+            // Assume it is an NACK since Receive Not Ready, Selective Reject and U-frames are not supported
+            value.frame = S_FRAME_NACK;
+        }
+
+        // Add the receive sequence number from the S-frame (or U-frame)
+        value.seq_no = (control >> HDLC_CONTROL_RECV_SEQ_NO_BIT);
+    } else {
+        // It must be an I-frame so add the send sequence number (receive sequence number is not used)
+        value.frame = I_FRAME;
+        value.seq_no = (control >> HDLC_CONTROL_SEND_SEQ_NO_BIT);
+    }
+
+    return value;
+}
+
+unsigned char hdlc_frame_control_type(hdlc_control_t *control) {
+    unsigned char value = 0;
+
+    switch (control->frame) {
+        case I_FRAME:
+            // Create the HDLC I-frame control byte with Poll bit set
+            value |= (control->seq_no << HDLC_CONTROL_SEND_SEQ_NO_BIT);
+            value |= (1 << HDLC_CONTROL_POLL_BIT);
+            break;
+        case S_FRAME:
+            // Create the HDLC Receive Ready S-frame control byte with Poll bit cleared
+            value |= (control->seq_no << HDLC_CONTROL_RECV_SEQ_NO_BIT);
+            value |= (1 << HDLC_CONTROL_S_OR_U_FRAME_BIT);
+            break;
+        case S_FRAME_NACK:
+            // Create the HDLC Receive Ready S-frame control byte with Poll bit cleared
+            value |= (control->seq_no << HDLC_CONTROL_RECV_SEQ_NO_BIT);
+            value |= (HDLC_CONTROL_TYPE_REJECT << HDLC_CONTROL_S_FRAME_TYPE_BIT);
+            value |= (1 << HDLC_CONTROL_S_OR_U_FRAME_BIT);
+            break;
+    }
+
+    return value;
+}
+
+void hdlc_get_data_reset() {
+    hdlc_get_data_reset_with_state(&hdlc_state);
+}
+
+void hdlc_get_data_reset_with_state(hdlc_state_t *state) {
+    state->fcs = FCS_INIT_VALUE;
+    state->start_index = state->end_index = -1;
+    state->src_index = state->dest_index = 0;
+    state->control_escape = 0;
+}
+
+//int hdlc_get_data(hdlc_control_t *control, const char *src,
+//                    unsigned int src_len, char *dest, unsigned int *dest_len)
+int hdlc_get_data(hdlc_control_t *control, uint8_t *src,
+                  size_t src_len, uint8_t *dest, size_t *dest_len){
+    return hdlc_get_data_with_state(&hdlc_state, control, src, src_len, dest, dest_len);
+}
+
+//int hdlc_get_data_with_state(hdlc_state_t *state, hdlc_control_t *control, const char *src,
+//                               unsigned int src_len, char *dest, unsigned int *dest_len)
+int hdlc_get_data_with_state(hdlc_state_t *state, hdlc_control_t *control, uint8_t *src,
+                             size_t src_len, uint8_t *dest, size_t *dest_len){
+    int ret;
+    char value;
+    unsigned int i;
+
+    // Make sure that all parameters are valid
+    if (!state || !control || !src || !dest || !dest_len) {
+        return -EINVAL;
+    }
+
+    // Run through the data bytes
+    for (i = 0; i < src_len; i++) {
+        // First find the start flag sequence
+        if (state->start_index < 0) {
+            if (src[i] == HDLC_FLAG_SEQUENCE) {
+                // Check if an additional flag sequence byte is present
+                if ((i < (src_len - 1)) && (src[i + 1] == HDLC_FLAG_SEQUENCE)) {
+                    // Just loop again to silently discard it (accordingly to HDLC)
+                    continue;
+                }
+
+                state->start_index = state->src_index;
+            }
+        } else {
+            // Check for end flag sequence
+            if (src[i] == HDLC_FLAG_SEQUENCE) {
+                // Check if an additional flag sequence byte is present or earlier received
+                if (((i < (src_len - 1)) && (src[i + 1] == HDLC_FLAG_SEQUENCE))
+                    || ((state->start_index + 1) == state->src_index)) {
+                    // Just loop again to silently discard it (accordingly to HDLC)
+                    continue;
+                }
+
+                state->end_index = state->src_index;
+                break;
+            } else if (src[i] == HDLC_CONTROL_ESCAPE) {
+                state->control_escape = 1;
+            } else {
+                // Update the value based on any control escape received
+                if (state->control_escape) {
+                    state->control_escape = 0;
+                    value = src[i] ^ 0x20;
+                } else {
+                    value = src[i];
+                }
+
+                // Now update the FCS value
+                state->fcs = calc_fcs(state->fcs, value);
+
+                if (state->src_index == state->start_index + 2) {
+                    // Control field is the second byte after the start flag sequence
+                    *control = hdlc_get_control_type(value);
+                } else if (state->src_index > (state->start_index + 2)) {
+                    // Start adding the data values after the Control field to the buffer
+                    dest[state->dest_index++] = value;
+                }
+            }
+        }
+        state->src_index++;
+    }
+
+    // Check for invalid frame (no start or end flag sequence)
+    if ((state->start_index < 0) || (state->end_index < 0)) {
+        // Return no message and make sure destination length is 0
+        *dest_len = 0;
+        ret = -ENOMSG;
+    } else {
+        // A frame is at least 4 bytes in size and has a valid FCS value
+        if ((state->end_index < (state->start_index + 4))
+            || (state->fcs != FCS_GOOD_VALUE)) {
+            // Return FCS error and indicate that data up to end flag sequence in buffer should be discarded
+            *dest_len = i;
+            ret = -EIO;
+        } else {
+            // Return success and indicate that data up to end flag sequence in buffer should be discarded
+            *dest_len = state->dest_index - sizeof(state->fcs);
+            ret = i;
+        }
+
+        // Reset values for next frame
+        hdlc_get_data_reset_with_state(state);
+    }
+
+    return ret;
+}
+
+//int hdlc_frame_data(hdlc_control_t *control, const char *src,
+//                      unsigned int src_len, char *dest, unsigned int *dest_len)
+int hdlc_frame_data(hdlc_control_t *control, uint8_t *src,
+                    size_t src_len, uint8_t *dest, size_t *dest_len){
+    unsigned int i;
+    int dest_index = 0;
+    unsigned char value = 0;
+    FCS_SIZE fcs = FCS_INIT_VALUE;
+
+    // Make sure that all parameters are valid
+    if (!control || (!src && (src_len > 0)) || !dest || !dest_len) {
+        return -EINVAL;
+    }
+
+    // Start by adding the start flag sequence
+    dest[dest_index++] = HDLC_FLAG_SEQUENCE;
+
+    // Add the all-station address from HDLC (broadcast)
+    fcs = calc_fcs(fcs, HDLC_ALL_STATION_ADDR);
+    hdlc_escape_value(HDLC_ALL_STATION_ADDR, dest, &dest_index);
+
+    // Add the framed control field value
+    value = hdlc_frame_control_type(control);
+    fcs = calc_fcs(fcs, value);
+    hdlc_escape_value(value, dest, &dest_index);
+
+    // Only DATA frames should contain data
+    if (control->frame == I_FRAME) {
+        // Calculate FCS and escape data
+        for (i = 0; i < src_len; i++) {
+            fcs = calc_fcs(fcs, src[i]);
+            hdlc_escape_value(src[i], dest, &dest_index);
+        }
+    }
+
+    // Invert the FCS value accordingly to the specification
+    fcs ^= FCS_INVERT_MASK;
+
+    // Run through the FCS bytes and escape the values
+    for (i = 0; i < sizeof(fcs); i++) {
+        value = ((fcs >> (8 * i)) & 0xFF);
+        hdlc_escape_value(value, dest, &dest_index);
+    }
+
+    // Add end flag sequence and update length of frame
+    dest[dest_index++] = HDLC_FLAG_SEQUENCE;
+    *dest_len = dest_index;
+
+    return 0;
+}

hdlc/hdlc.h

@@ -0,0 +1,108 @@
+//
+// Created by 79513 on 15.12.2023.
+//
+
+#ifndef HDLC_H
+#define HDLC_H
+
+#include "fcs.h"
+#include <errno.h>
+#include "stdint.h"
+
+/** HDLC start/end flag sequence */
+#define HDLC_FLAG_SEQUENCE 0x7E
+
+/** HDLC control escape value */
+#define HDLC_CONTROL_ESCAPE 0x7D
+
+/** HDLC all station address */
+#define HDLC_ALL_STATION_ADDR 0xFF
+
+/** Supported HDLC frame types */
+typedef enum {
+    I_FRAME,
+    S_FRAME,
+    S_FRAME_NACK,
+} hdlc_frame_t;
+
+/** Control field information */
+typedef struct {
+    hdlc_frame_t frame;
+    unsigned char seq_no :3;
+} hdlc_control_t;
+
+/** Variables used in hdlc_get_data and hdlc_get_data_with_state
+ * to keep track of received buffers
+ */
+typedef struct {
+    char control_escape;
+    FCS_SIZE fcs;
+    int start_index;
+    int end_index;
+    int src_index;
+    int dest_index;
+} hdlc_state_t;
+
+/**
+ * Retrieves data from specified buffer containing the HDLC frame. Frames can be
+ * parsed from multiple buffers e.g. when received via UART.
+ *
+ * @param[out] control Control field structure with frame type and sequence number
+ * @param[in] src Source buffer with frame
+ * @param[in] src_len Source buffer length
+ * @param[out] dest Destination buffer (should be able to contain max frame size)
+ * @param[out] dest_len Destination buffer length
+ * @retval >=0 Success (size of returned value should be discarded from source buffer)
+ * @retval -EINVAL Invalid parameter
+ * @retval -ENOMSG Invalid message
+ * @retval -EIO Invalid FCS (size of dest_len should be discarded from source buffer)
+ *
+ * @see hdlc_get_data_with_state
+ */
+int hdlc_get_data(hdlc_control_t *control, uint8_t *src,
+                    size_t src_len, uint8_t *dest, size_t *dest_len);
+
+/**
+ * Retrieves data from specified buffer containing the HDLC frame. Frames can be
+ * parsed from multiple buffers e.g. when received via UART.
+ *
+ * This function is a variation of @ref hdlc_get_data
+ * The difference is only in first argument: hdlc_state_t *state
+ * Data under that pointer is used to keep track of internal buffers.
+ *
+ * @see hdlc_get_data
+ */
+int hdlc_get_data_with_state(hdlc_state_t *state, hdlc_control_t *control, uint8_t *src,
+                             size_t src_len, uint8_t *dest, size_t *dest_len);
+
+/**
+ * Resets values used in yahdlc_get_data function to keep track of received buffers
+ */
+void hdlc_get_data_reset();
+
+/**
+ * This is a variation of @ref hdlc_get_data_reset
+ * Resets state values that are under the pointer provided as argument
+ *
+ * This function need to be called before the first call to hdlc_get_data_with_state
+ * when custom state storage is used.
+ *
+ * @see hdlc_get_data_reset
+ */
+void hdlc_get_data_reset_with_state(hdlc_state_t *state);
+
+/**
+ * Creates HDLC frame with specified data buffer.
+ *
+ * @param[in] control Control field structure with frame type and sequence number
+ * @param[in] src Source buffer with data
+ * @param[in] src_len Source buffer length
+ * @param[out] dest Destination buffer (should be bigger than source buffer)
+ * @param[out] dest_len Destination buffer length
+ * @retval 0 Success
+ * @retval -EINVAL Invalid parameter
+ */
+int hdlc_frame_data(hdlc_control_t *control, uint8_t *src,
+                      size_t src_len, uint8_t *dest, size_t *dest_len);
+
+#endif //HDLC_H

hdlc/main.c

@@ -0,0 +1,183 @@
+//#include "hdlc.h"
+
+#include "client.h"
+
+int main(){
+    struct Client hdlc;
+    init_hdlc_client(&hdlc, 200);
+    hdlc_control_t frame;
+    hdlc_connect(&hdlc, &frame);
+    uint8_t buffer_for_ex[20];
+    uint8_t fake_buffer;
+    hdlc_get_raw_frame(&hdlc, &frame, &buffer_for_ex, sizeof(buffer_for_ex));
+
+    for (int i = 0; i < 200; i++){
+        int z = hdlc_timeout_handler(&hdlc, 1);
+        hdlc_decode_recived_raw_data(&hdlc, &fake_buffer, sizeof(fake_buffer), 0, 0);
+    }
+
+    hdlc_get_raw_frame(&hdlc, &frame, &buffer_for_ex, sizeof(buffer_for_ex));
+    int i = hdlc_decode_recived_raw_data(&hdlc, &buffer_for_ex, sizeof(buffer_for_ex), 0, 0);
+    if (i < 0){
+        printf("err connect: %d\n", i);
+    }
+
+    hdlc_control_t frame_data;
+    uint8_t data = 33;
+    hdlc_send_data(&hdlc, &frame_data, &data, sizeof(data));
+    uint8_t buffer_for_ex_data[7];
+
+    hdlc_get_raw_frame(&hdlc, &frame_data, &buffer_for_ex_data, sizeof(buffer_for_ex_data));
+
+    //printf("first_ex:%d\n", buffer_for_ex_data[0]);
+    uint8_t recived_data;
+    size_t len_recived_data;
+    int x = hdlc_decode_recived_raw_data(&hdlc, &buffer_for_ex_data, sizeof(buffer_for_ex_data), &recived_data, &len_recived_data);
+    if (x < 0){
+        printf("err send: %d\n", x);
+    }
+    printf("recived data: %d\n", recived_data);
+
+
+
+
+//    uint8_t send[64];
+//    uint8_t buffer[134];
+//    for (int i = 0; i < sizeof(send); i++) {
+//        send[i] = (uint8_t) (rand() % 0x70);
+//    }
+//    send_data(&hdlc, send, sizeof(send_data));
+//    //get_frame(&hdlc, buffer, sizeof(buffer), send_data, sizeof(send_data));
+//
+//    hdlc_get_raw_data(&hdlc, buffer, sizeof(buffer));
+
+    // test 1
+
+//    int ret;
+//    uint8_t frame_data[8], recv_data[8];
+//    size_t i, frame_length = 0, recv_length = 0;
+//    hdlc_control_t control_send, control_recv;
+
+//    // Run through the supported sequence numbers (3-bit)
+//    for (i = 0; i <= 7; i++) {
+//        // Initialize the control field structure with frame type and sequence number
+//        control_send.frame = HDLC_FRAME_ACK;
+//        control_send.seq_no = i;
+//
+//        // Create an empty frame with the control field information
+//        ret = hdlc_frame_data(&control_send, NULL, 0, frame_data, &frame_length);
+//
+//        // Get the data from the frame
+//        ret = hdlc_get_data(&control_recv, frame_data, frame_length, recv_data,
+//                              &recv_length);
+//
+//        // Result should be frame_length minus start flag to be discarded and no bytes received
+//        if(ret != (int )frame_length - 1){
+//            printf("err");
+//        }
+//    }
+//    if (recv_length != 0){
+//        printf("err2");
+//    }
+//
+//    if (control_send.frame != control_recv.frame){
+//        printf("err3");
+//    }
+//
+//    if (control_send.seq_no != control_recv.seq_no){
+//        printf("err4");
+//    }
+
+    // test 2
+
+    // Run through the supported sequence numbers (3-bit)
+//    for (i = 0; i <= 7; i++) {
+//        // Initialize the control field structure with frame type and sequence number
+//        control_send.frame = HDLC_FRAME_DATA;
+//        control_send.seq_no = i;
+//
+//        char* input = "311";
+//        uint8_t data = (uint8_t)atoi(input);
+//
+//        // Create an empty frame with the control field information
+//        ret = hdlc_frame_data(&control_send, &data, 3, frame_data, &frame_length);
+//        if (ret != 0){
+//            printf("err123\n");
+//        }
+//
+//        // Get the data from the frame
+//        ret = hdlc_get_data(&control_recv, frame_data, frame_length, recv_data,
+//                            &recv_length);
+//
+//        // Result should be frame_length minus start flag to be discarded and no bytes received
+//        if(ret != (int )frame_length - 1){
+//            printf("err333\n");
+//        }
+//        if (recv_length != 0){
+//            printf("err2\n");
+//        }
+//
+//        // Verify the control field information
+//        if (control_send.frame != control_recv.frame){
+//            printf("err3\n");
+//        }
+//
+//        if (control_send.seq_no != control_recv.seq_no){
+//            printf("err4\n");
+//        }
+//    }
+
+//    int ret;
+//    hdlc_control_t control;
+//    uint8_t send_data[512], frame_data[530], recv_data[530];
+//    size_t i, frame_length = 0, recv_length = 0, buf_length = 16;
+//
+//    // Initialize data to be send with random values (up to 0x70 to keep below the values to be escaped)
+//    for (i = 0; i < sizeof(send_data); i++) {
+//        send_data[i] = (uint8_t) (rand() % 0x70);
+//    }
+//
+//    // Initialize control field structure and create frame
+//    control.frame = HDLC_FRAME_DATA;
+//    ret = hdlc_frame_data(&control, send_data, sizeof(send_data), frame_data,
+//                            &frame_length);
+//
+//    // Check that frame length is maximum 2 bytes larger than data due to escape of FCS value
+//    if(frame_length >= ((sizeof(send_data) + 6) + 2)){
+//        printf("1");
+//    }
+//    if(ret != 0){
+//        printf("2");
+//    }
+//
+//    // Run though the different buffers (simulating decode of buffers from UART)
+//    for (i = 0; i <= sizeof(send_data); i += buf_length) {
+//        // Decode the data
+//        ret = hdlc_get_data(&control, &frame_data[i], buf_length, recv_data,
+//                              &recv_length);
+//
+//        printf("%zu: %s\n", i, recv_data);
+//
+//        if (i < sizeof(send_data)) {
+//            // All chunks until the last should return no message and zero length
+//            if (ret != -ENOMSG){
+//                printf("3");
+//            }
+//            if (recv_length != 0){
+//                printf("1231");
+//            }
+//        } else {
+//            if (ret > 7){
+//                printf("332");
+//            }
+//            if (recv_length != sizeof(send_data)){
+//                printf("88888");
+//            }
+//            // The last chunk should return max 6 frame bytes - 1 start flag sequence byte + 2 byte for the possible
+//            // escaped FCS = 7 bytes
+////            BOOST_CHECK(ret <= 7);
+////            BOOST_CHECK_EQUAL(recv_length, sizeof(send_data));
+//            //printf("5");
+//        }
+//    }
+}

lcd.h

@@ -0,0 +1,8 @@
+#ifndef Lcd_print_h
+#define Lcd_print_h
+#include <Arduino.h>
+
+void Lcd_inciliation();
+void printLcd(const char* inputText);
+
+#endif

main_sketch/main_sketch.ino

@@ -0,0 +1,72 @@
+#include "lcd.h"
+#include "client.h"
+#include "uart.h"
+#include "stdbool.h"
+#include "stdio.h"
+
+struct Client hdlc;
+bool flag_connection = false;
+
+void setup() {
+    Lsd_inciliation();
+    UART_init();
+    init_hdlc_client(&hdlc, 200);
+}
+
+void loop() {
+    if (!flag_connection){
+        hdlc_connect(&hdlc);
+        uint8_t buffer;
+        hdlc_get_raw_frame(&hdlc, &buffer, sizeof(buffer));
+
+        UART_send(&buffer, sizeof(buffer));
+
+        bool flag_recive = true;
+        while(flag_recive){
+            uint8_t buffer;
+            UART_receive(&buffer, sizeof(buffer));
+
+            int err = hdlc_timeout_handler(&hdlc, 1);
+            if (err != 0){
+                return err;
+            }
+
+            int ret = hdlc_decode_recived_raw_data(&hdlc, &fake_buffer, sizeof(fake_buffer), 0, 0);
+
+            if (ret == -6){
+                uint8_t buffer;
+                hdlc_get_raw_frame(&hdlc, &hdlc->frame_rej, &buffer, sizeof(buffer));
+                UART_send(&buffer, sizeof(buffer));
+            }
+
+            if (ret == 0 && client->state == READY_STATE){
+                flag_connection = true;
+            }
+        }
+    } else {
+        bool flag_recive = true;
+        while(flag_recive){
+            uint8_t buffer;
+            UART_receive(&buffer, sizeof(buffer));
+
+            int err = hdlc_timeout_handler(&hdlc, 1);
+            if (err != 0){
+                return err;
+            }
+
+            uint8_t recived_data;
+            size_t len_recived_data;
+
+            int ret = hdlc_decode_recived_raw_data(&hdlc, &fake_buffer, sizeof(fake_buffer), &recived_data, &len_recived_data);
+
+            if (ret == -6){
+                uint8_t buffer;
+                hdlc_get_raw_frame(&hdlc, &hdlc->frame_rej, &buffer, sizeof(buffer));
+                UART_send(&buffer, sizeof(buffer));
+            }
+
+            printLsd(recived_data);
+        }
+    }
+
+}