//-------------------------------------------------------------------------------------
//инициализация дисплея
//-------------------------------------------------------------------------------------
#define F_CPU 1000000UL  // 1 MHz
//----------
#define VLED 0          //power
#define LCD_RS    1     //define MCU pin connected to LCD RS
#define LCD_RW    2     //define MCU pin connected to LCD R/W
#define LCD_E    3    //define MCU pin connected to LCD E
#define LCD_D4    4    //define MCU pin connected to LCD D3
#define LCD_D5    5    //define MCU pin connected to LCD D4
#define LCD_D6    6    //define MCU pin connected to LCD D5
#define LCD_D7    7    //define MCU pin connected to LCD D6
#define LDP PORTC    //define MCU port connected to LCD data pins
#define LCP PORTC    //define MCU port connected to LCD control pins
#define LDDR DDRC    //define MCU direction register for port connected to LCD data pins
#define LCDR DDRC    //define MCU direction register for port connected to LCD control pins
//VLED - PC0
//RS   - PC1
//R/W  - PC2
//E    - PC3
//DB4..DB7 - PC4..PC7

void _delay_ms(double __ms)
{
    uint16_t __ticks;
    double __tmp = ((F_CPU) / 4e3) * __ms;
    if (__tmp < 1.0)
        __ticks = 1;
    else if (__tmp > 65535)
    {
        //    __ticks = requested delay in 1/10 ms
        __ticks = (uint16_t) (__ms * 10.0);
        while(__ticks)
        {
            // wait 1/10 ms
            _delay_loop_2(((F_CPU) / 4e3) / 10);
            __ticks --;
        }
        return;
    }
    else
        __ticks = (uint16_t)__tmp;
    _delay_loop_2(__ticks);
  
}

void LCDsendCommand(uint8_t cmd)    //Sends Command to LCD
{
    LDP=(cmd&0b11110000)|1<<VLED;
    LCP|=1<<LCD_E;        
    _delay_ms(1);
    LCP&=~(1<<LCD_E);
    _delay_ms(1);
    LDP=((cmd&0b00001111)<<4)|(1<<VLED);    
    LCP|=1<<LCD_E;        
    _delay_ms(1);
    LCP&=~(1<<LCD_E);
    _delay_ms(1);
}
void LCDinit(void)//Initializes LCD
{
    LDP=1<<VLED;
    LCP=1<<VLED;
        _delay_ms(15);
    //LDP=0x00;
    //LCP=0x00;
    LDDR|=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4;
    LCDR|=1<<LCD_E|1<<LCD_RW|1<<LCD_RS;
   //---------one------
    LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<VLED; //4 bit mode
    LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;        
    _delay_ms(1);
    LCP&=~(1<<LCD_E);
    _delay_ms(1);
    //-----------two-----------
    LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4|1<<VLED; //4 bit mode
    LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;        
    _delay_ms(1);
    LCP&=~(1<<LCD_E);
    _delay_ms(1);
    //-------three-------------
    LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4|1<<VLED; //4 bit mode
    LCP|=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;        
    _delay_ms(1);
    LCP&=~(1<<LCD_E);
    _delay_ms(1);
    //--------4 bit--dual line---------------
    LCDsendCommand(0b00101000);
   //-----increment address, cursor shift------
    LCDsendCommand(0b00001110);
}