/*****************************************************
This program was produced by the
CodeWizardAVR V2.03.4 Standard
Automatic Program Generator
© Copyright 1998-2008 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com

Project :
Version :
Date    : 29.07.2011
Author  :
Company :
Comments:


Chip type           : ATtiny2313
Clock frequency     : 8,000000 MHz
Memory model        : Tiny
External RAM size   : 0
Data Stack size     : 32
*****************************************************/

#include <tiny2313.h>
#include <delay.h>

#define dht_dpin 3
char bGlobalErr;   
char dht_dat[5];   
char dht_in;
flash char znak[]={63,6,91,79,102,109,125,7,127,111,0,99,57,118};
char cyf=1;
char out[]={0,0,0,0};
char des=0, ed=0;
char fase=0;

void InitDHT(void);
void ReadDHT(void);
char read_dht_dat();
char hex2dec(char);

// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
    {
        cyf=cyf*2;
        if (cyf==16) cyf=1;
        if (fase==0){
        switch (cyf)
        {
            case 1: PORTB=~znak[12]; PORTD.0=1; PORTD.3=0; break;
            case 2: PORTB=~znak[11]; PORTD.1=1; PORTD.0=0; break;
            case 4: PORTB=~znak[out[2]]; PORTD.2=1; PORTD.1=0; break;
            case 8: PORTB=~znak[out[3]]; PORTD.3=1; PORTD.2=0; break;
        }
        }
        else
        {
            switch (cyf)
        {
            case 1: PORTB=~znak[out[0]]; PORTD.0=1; PORTD.3=0; break;
            case 2: PORTB=~znak[out[1]]; PORTD.1=1; PORTD.0=0; break;
            case 4: PORTB=~znak[10]; PORTD.2=1; PORTD.1=0; break;
            case 8: PORTB=~znak[13]; PORTD.3=1; PORTD.2=0; break;
        }
        }       
    }

// Standard Input/Output functions
#include <stdio.h>

// Declare your global variables here

void main(void)
{
// Declare your local variables here

// Crystal Oscillator division factor: 1
#pragma optsize-
CLKPR=0x80;
CLKPR=0x00;
#ifdef _OPTIMIZE_SIZE_
#pragma optsize+
#endif

PORTB=0x80;
DDRB=0x7F;

PORTD=0x7F;
DDRD=0x0F;

UCSRA=0x00;
UCSRB=0x00;
UCSRC=0x00;
UBRRH=0x00;
UBRRL=0x00;

TCCR0A=0x00;
TCCR0B=0x03;
TCNT0=0x00;
TIMSK=0x02;

#asm("sei")

InitDHT();
delay_ms(1000);

while (1)
    {
        #asm("cli")
        PORTB=0xFF;
        fase=1-fase;
        ReadDHT();
        #asm("sei")
        if (bGlobalErr==0)
            { 
                hex2dec(dht_dat[2]);
                out[3]=des;
                out[2]=ed;
                hex2dec(dht_dat[0]);
                out[1]=des;
                out[0]=ed;
            }
        else
            {
                out[0]=10;
                out[1]=10;
                out[2]=10;
                out[3]=10;
            }   
        delay_ms(3000);         
    };
}

void InitDHT(void)
    {
        DDRD.6=1;
        PORTD.6=1;
    }

void ReadDHT(void)
    {
        char dht_check_sum;
        char i = 0;
        bGlobalErr=0;
        PORTD.6=0;
        delay_ms(23);
        PORTD.6=1;
        delay_us(40);
        DDRD.6=0;
        delay_us(40);

        dht_in=PIND.6;

        if(dht_in)
            {
                bGlobalErr=1;
                return;
            }
        delay_us(80);

        dht_in=PIND.6;

        if(!dht_in)
            {
                bGlobalErr=2;
                return;
            }

        delay_us(80);
        for (i=0; i<5; i++)
            dht_dat[i] = read_dht_dat();
        DDRD.6=1;
        PORTD.6=1;
        dht_check_sum = dht_dat[0]+dht_dat[1]+dht_dat[2]+dht_dat[3];
        if(dht_dat[4]!= dht_check_sum)
            {bGlobalErr=3;}
    };

char read_dht_dat()
    {
        char i = 0;
        char result=0;
        for(i=0; i< 8; i++)
            {
                while(PIND.6==0);
                delay_us(30);
                if (PIND.6==1) result |=(1<<(7-i));
                while (PIND.6==1);
            }
        return result;
    }
   
char hex2dec(char num)
    {
        char result=0;
        char hex=num;
        des=0;
        ed=0;
        while (hex>9)
            {
                hex=hex-10;
                des=des+1;
            }
        ed=hex;
        result=((des<<4)|ed);
        return result;       
    }   

#include <mega8.h>
#asm
   .equ __lcd_port=0x12 ;PORTD
#endasm
#include <lcd.h>
 #include <stdio.h>     
#include <delay.h>
 
unsigned char dht_dat[5];   
unsigned char  H0=0, T2 =0;
unsigned char  H1=1, T3 =3;
unsigned char read_dht_dat();

void InitDHT(void)
    {  DDRD.3=1,  PORTD.3=1; }

void ReadDHT(void)
    {unsigned char  RD = 0;
        PORTD.3=0;    delay_ms(23);
        PORTD.3=1;    delay_us(40);
        DDRD.3=0;      delay_us(200);
        for (RD=0; RD<5;RD++)
            dht_dat[RD] = read_dht_dat();
        DDRD.3=1;  PORTD.3=1;
    };

char read_dht_dat()
    {
unsigned char res = 0;
unsigned char result=0;
        for(res=0; res< 8; res++)
            {   while(PIND.3==0); delay_us(30);
                if (PIND.3==1) result |=(1<<(7-res));  while (PIND.3==1); }
        return result;
    }
   
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
}
interrupt [TIM1_COMPA] void timer1_compa_isr(void)
{
//   TCNT1H=0;
//   TCNT1L=0; 
}
void main(void)
{
                  PORTB=0b00000000;
                    DDRB=0b00000000;
                  PORTC=0b00000000;                                   //
                    DDRC=0b00000000;
                  PORTD=0b00000000;                                   //
                    DDRD=0b00000000;                                   
TCCR0=0x00;
TCNT0=0x00;
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x1E;
OCR1AL=0x85;
OCR1BH=0x00;
OCR1BL=0x00;
MCUCR=0x00;
TIMSK=0x11;
ACSR=0x80;
SFIOR=0x00;
lcd_init(16);
InitDHT();
delay_ms(100);
                   lcd_gotoxy(0,0);
                   lcd_putsf("   error  "); 
// Watchdog Timer initialization
// Watchdog Timer Prescaler: OSC/2048k
#pragma optsize-
WDTCR=0x1F;
WDTCR=0x0F;
#ifdef _OPTIMIZE_SIZE_
#pragma optsize+
#endif
#asm("sei")

while (1)
    { 
   // #asm("wdr"); //Сбрасываем счетчик WDT 
        ReadDHT();     
                 H0= dht_dat[0];
                  T2= dht_dat[2];
                   H1-- ; // инкрементирруем
                   T3++;
                   lcd_gotoxy(0,0);
                   lcd_putsf("T2="); 

                   lcd_putchar((T2/100)%10+0x30);
                   lcd_putchar((T2/10)%10+0x30);
                   lcd_putchar(T2%10+0x30);     
                   lcd_putsf("  T3="); 

                   lcd_putchar((T3/100)%10+0x30);
                   lcd_putchar((T3/10)%10+0x30);
                   lcd_putchar(T3%10+0x30);
                   lcd_gotoxy(0,1);
                   lcd_putsf("H0=");

                   lcd_putchar((H0/100)%10+0x30);
                   lcd_putchar((H0/10)%10+0x30);
                   lcd_putchar(H0%10+0x30);   
                   lcd_putsf("  H1=");

                   lcd_putchar((H1/100)%10+0x30);
                   lcd_putchar((H1/10)%10+0x30);
                   lcd_putchar(H1%10+0x30);
        delay_ms(200);         
    };
}

/*
DHT-11 Library
(c) Created by Charalampos Andrianakis on 18/12/11.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#include "DHT.h"

uint8_t DHT_Read_Data(uint8_t select){

    //data[5] is 8byte table where data come from DHT are stored
    //laststate holds laststate value
    //counter is used to count microSeconds
    uint8_t data[5], laststate = 0, counter = 0, j = 0, i = 0;
   
    //Clear array
    data[0] = data[1] = data[2] = data[3] = data[4] = 0;
   
    cli();                              //Disable interrupts
   
    //Prepare the bus
    DDR(DHT_PORT)   |= _BV(DHT_PIN);    //Set pin Output
    DHT_PORT        |= _BV(DHT_PIN);    //Pin High
    _delay_ms(250);                     //Wait for 250mS
   
    //Send Request Signal
    DHT_PORT        &=~_BV(DHT_PIN);    //Pin Low
    _delay_ms(20);                      //20ms Low
   
    DHT_PORT        |= _BV(DHT_PIN);    //Pin High
    _delay_us(40);                      //40us High
   
    //Set pin Input to read Bus
    DDR(DHT_PORT)   &=~_BV(DHT_PIN);    //Set pin Input

    laststate=DHT_Read_Pin;             //Read Pin value
   
    //Repeat for each Transistions
    for (i=0; i<MAXTIMINGS; i++) {
        //While state is the same count microseconds
        while (laststate==DHT_Read_Pin) {
            _delay_us(1);
            counter++;
        }
       
        //laststate==_BV(DHT_PIN) checks if laststate was High
        //ignore the first 2 transitions which are the DHT Response
        if (laststate==_BV(DHT_PIN) && (i > 2)) {
            //Save bits in segments of bytes
            //Shift data[] value 1 position left
            //Example. 01010100 if we shift it left one time it will be
            //10101000
            data[j/8]<<=1;
            if (counter >= 40) {    //If it was high for more than 40uS
                data[j/8]|=1;       //it means it is bit '1' so make a logic
            }                       //OR with the value (save it)
            j++;                    //making an OR by 1 to this value 10101000
        }                           //we will have the resault 10101001
                                    //1 in 8-bit binary is 00000001
        //j/8 changes table record every 8 bits which means a byte has been saved
        //so change to next record. 0/8=0 1/8=0 ... 7/8=0 8/8=1 ... 15/8=1 16/8=2
        laststate=DHT_Read_Pin;     //save current state
        counter=0;                  //reset counter
       
    }
    sei();                          //Enable interrupts
   
    //Check if DHT-11 is connected
    if (data[0]==0 && data[1]==0 && data[2]==0 && data[3]==0) {
        uart_puts("\r\nDHT not pluged!");
        return(-1);
    }
    //Check if data received are correct by checking the CheckSum
    if (data[0] + data[1] + data[2] + data[3] == data[4]) {
        if (select==DHT_Temp) {     //Return the value has been choosen
            return(data[2]);
        }else if(select==DHT_RH){
            return(data[0]);
        }
    }else{
        uart_puts("\r\nCheck Sum Error");
    }
 
   
}

/*
 DHT-11 Library
 (c) Created by Charalampos Andrianakis on 18/12/11.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
#include <stdlib.h>
#include <avr/io.h>
#include <util/delay.h>

//DHT Pin and Port
#define DHT_PORT    PORTC
#define DHT_PIN     0

//The packet size is 40bit but each bit consists of low and high state
//so 40 x 2 = 80 transitions. Also we have 2 transistions DHT response
//and 2 transitions which indicates End Of Frame. In total 84
#define MAXTIMINGS  84

//Select between Temp and Humidity Read
#define DHT_Temp    0
#define DHT_RH      1

#define DHT_Read_Pin    (PIN(DHT_PORT) & _BV(DHT_PIN))

//This is the main function which requests and reads the packet
uint8_t DHT_Read_Data(uint8_t select);

/*****************************************************
CodeWizardAVR V2.04.4a Advanced
Date    : 29.12.2012
Chip type               : ATmega8
AVR Core Clock frequency: 4,000000 MHz
*****************************************************/

#include <mega8.h>

#asm
   .equ __lcd_port=0x12 ;PORTD
#endasm
#include <lcd.h>
#include <stdio.h>     
#include <delay.h>
#include "DHT.h"
 int D_0=123, D_2=456;
  uint8_t DHT_Read_Data(uint8_t select){

    //data[5] is 8byte table where data come from DHT are stored
    //laststate holds laststate value
    //Счетчик используется для подсчета микросекунд
    uint8_t data[5], laststate = 0, counter = 0, j = 0, i = 0;
   
    //Очистить массив
    data[0] = data[1] = data[2] = data[3] = data[4] = 0;
   
    #asm("cli")                              //Запретить прерывания
   
    //Подготовкаthe bus
    DDR_DHT_PORT   |= _BV(DHT_PIN);    //Set pin Output
    DHT_PORT        |= _BV(DHT_PIN);    //Pin высокой
   delay_ms(250);                     //Wait for 250mS
   
    //Send Request Signal
    DHT_PORT        &=~_BV(DHT_PIN);    //Pin Низкая
   delay_ms(20);                      //20ms Low
   
    DHT_PORT        |= _BV(DHT_PIN);    //Pin высокой
   delay_us(40);                      //40us высокой
   
    //Set pin ввода to read Bus
    DDR_DHT_PORT   &=~_BV(DHT_PIN);    //Set pin Input

    laststate=DHT_Read_Pin;             //Чтение значенияPin value
   
    //Repeat for each Transistions
    for (i=0; i<MAXTIMINGS; i++) {
        //While state is the same count microseconds
        while (laststate==DHT_Read_Pin) {
            delay_us(1);
            counter++; 

        }
       
        //laststate==_BV(DHT_PIN) checks if laststate was High
        //ignore the first 2 transitions which are the DHT Response
        if (laststate==_BV(DHT_PIN) && (i > 2)) {
            //Save bits in segments of bytes
            //Shift data[] value 1 position left
            //Example. 01010100 if we shift it left one time it will be
            //10101000
            data[j/8]<<=1;
            if (counter >= 40) {    //If it was high for more than 40uS
                data[j/8]|=1;       //it means it is bit '1' so make a logic
            }                       //OR with the value (save it)
            j++;                    //making an OR by 1 to this value 10101000
        }                           //we will have the resault 10101001
                                    //1 in 8-bit binary is 00000001
        //j/8 changes table record every 8 bits which means a byte has been saved
        //so change to next record. 0/8=0 1/8=0 ... 7/8=0 8/8=1 ... 15/8=1 16/8=2
        laststate=DHT_Read_Pin;     //save current state
        counter=0;                  //сброс счетчика

    }
    #asm("sei");                          //Разрешить прерывания
   
//                //Check if DHT-11 is connected
//                if (data[0]==0 && data[1]==0 && data[2]==0 && data[3]==0) {
//                    putsf("\r\nDHT not pluged!");         //не подключен   
//                    return(-1);
//                }
//    //Check if data received are correct by checking the CheckSum
//    if (data[0] + data[1] + data[2] + data[3] == data[4]) {
//        if (select==DHT_Temp) {     //Return the value has been choosen
//            return(data[2]);
//        }else if(select==DHT_RH){
//            return(data[0]);
//        }
//    }else{
//        putsf("\r\nCheck Sum Error");           //Ошибка контрольной суммы
//    }
 
   
}
void main(void)
{

ACSR=0x80;
SFIOR=0x00;

// LCD module initialization
lcd_init(16);

// USART initialization
// Communication Parameters: 8 Data, 1 Stop, No Parity
// USART Receiver: Off
// USART Transmitter: On
// USART Mode: Asynchronous
// USART Baud Rate: 9600
//UCSRA=0x00;
//UCSRB=0x08;
//UCSRC=0x86;
//UBRRH=0x00;
//UBRRL=0x67;

while (1)
      {   
     
//      DHT_Read_Data();   
      D_0=data[0];
       D_2=data[2];
                   lcd_gotoxy(0,0);
                   lcd_putsf("D_0="); 

                   lcd_putchar((D_0/100)%10+0x30);
                   lcd_putchar((D_0/10)%10+0x30);
                   lcd_putchar(D_0%10+0x30);     

                   lcd_gotoxy(0,1);
                   lcd_putsf("D_2=");

                   lcd_putchar((D_2/100)%10+0x30);
                   lcd_putchar((D_2/10)%10+0x30);
                   lcd_putchar(D_2%10+0x30);

      };
}

#include <mega8.h>

#define CHIP_ADDR_RD    0xEF
#define CHIP_ADDR_WR    0xEE

#define  TWINT  7
#define  TWEA   6
#define  TWSTA  5
#define  TWSTO  4
#define  TWWC   3
#define  TWEN   2
#define  TWIE   0
#define EERE 0
#define EEPE 1
#define EEMPE 2

unsigned char get_data (unsigned char subaddr)
{
unsigned char data;
//start
TWCR = (1<<(TWINT))|(1<<TWSTA)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));
//chip address
TWDR = CHIP_ADDR_WR;
TWCR = (1<<TWINT)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));
//register address
TWDR = subaddr;               
TWCR = (1<<TWINT)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));
//restart
TWCR = (1<<(TWINT))|(1<<TWSTA)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));
//high byte
TWDR = CHIP_ADDR_RD;
TWCR = (1<<TWINT)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));
TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWEA);
while (!(TWCR & (1<<TWINT)));
data = TWDR;
TWCR = (1<<TWINT)|(1<<TWEN);
while (!(TWCR & (1<<TWINT)));
//stop
TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWSTO);     
return data;
}

void EEPROM_WR (unsigned int addr, unsigned char data)
{
while(EECR & (1<<EEPE));
EEAR = addr;
EEDR = data;
EECR |= (1<<EEMPE);
EECR |= (1<<EEPE);
}

void main(void)
{
unsigned char i;
for (i=0xAA;i<=0xBF;i++)
    {
    EEPROM_WR(i-0xAA,get_data(i));
    };

while (1)
    {
    };
}