/*****************************************************
This program was produced by the
CodeWizardAVR V1.25.9 Professional
Automatic Program Generator
© Copyright 1998-2008 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com

Project : 
Version : 
Date    : 20.10.2008
Author  : F4CG                            
Company : F4CG                            
Comments: 


Chip type           : ATmega48
Clock frequency     : 4.000000 MHz
Memory model        : Small
External SRAM size  : 0
Data Stack size     : 128
*****************************************************/

#include <mega48.h>
#include <stdio.h>
#include <math.h>


// 1 Wire Bus functions
#asm
   .equ __w1_port=0x05 ;PORTB
   .equ __w1_bit=0
#endasm
#include <1wire.h>

// DS1820 Temperature Sensor functions
#include <ds1820.h>

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

// Declare your global variables here

/* maximum number of DS1820/DS18S20 connected to the bus */

#define MAX_DEVICES 8

/* DS1820/DS18S20 devices ROM code storage area,

   9 bytes are used for each device

   (see the w1_search function description),

   but only the first 8 bytes contain the ROM code

   and CRC */

unsigned char rom_codes[MAX_DEVICES][9];

 
unsigned char i,devices;

int temp;




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

// Input/Output Ports initialization
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTB=0x00;
DDRB=0x00;

// Port C initialization
// Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTC=0x00;
DDRC=0x00;

// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTD=0x00;
DDRD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0A output: Disconnected
// OC0B output: Disconnected
TCCR0A=0x00;
TCCR0B=0x00;
TCNT0=0x00;
OCR0A=0x00;
OCR0B=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer 1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2A output: Disconnected
// OC2B output: Disconnected
ASSR=0x00;
TCCR2A=0x00;
TCCR2B=0x00;
TCNT2=0x00;
OCR2A=0x00;
OCR2B=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// Interrupt on any change on pins PCINT0-7: Off
// Interrupt on any change on pins PCINT8-14: Off
// Interrupt on any change on pins PCINT16-23: Off
EICRA=0x00;
EIMSK=0x00;
PCICR=0x00;

// Timer/Counter 0 Interrupt(s) initialization
TIMSK0=0x00;
// Timer/Counter 1 Interrupt(s) initialization
TIMSK1=0x00;
// Timer/Counter 2 Interrupt(s) initialization
TIMSK2=0x00;

// USART initialization
// Communication Parameters: 8 Data, 1 Stop, No Parity
// USART Receiver: Off
// USART Transmitter: On
// USART0 Mode: Asynchronous
// USART Baud Rate: 9600
UCSR0A=0x00;
UCSR0B=0x08;
UCSR0C=0x06;
UBRR0H=0x00;
UBRR0L=0x19;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
ADCSRB=0x00;

// 1 Wire Bus initialization
w1_init();

while (1)
      {      
      // Place your code here

/* detect how many DS1820/DS18S20 devices

   are connected to the bus and

   store their ROM codes in the rom_codes array */

devices=w1_search(0xf0,rom_codes);

/* display the number */

printf("%-u DEVICE(S) DETECTED\n\r",devices);

/* if no devices were detected then halt */

if (devices==0) while (1); /* loop forever */

/* measure and display the temperature(s) */       

while (1)

      {

      for (i=0;i<devices;)

          {

          temp=ds1820_temperature_10(&rom_codes[i][0]);

          printf("t%-u=%-i.%-u\xf8C\n\r",++i,temp/10,

          abs(temp%10));         

          };

      };



      };
}