Расчет CRC32 - C (СИ)

#include <mega324a.h>
#include <delay.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>
 
// Declare your global variables here
    int t = 0;   
    int tt = 0;
    int min = 99999;
    int i_min = 0; 
    int max = 0;  
    int i_max = 0;
    int index = 0;   
    int c = 0;
    char status;
    unsigned int adc_data; 
    unsigned char Str[32];
 
#define DATA_REGISTER_EMPTY (1<<UDRE0)
#define RX_COMPLETE (1<<RXC0)
#define FRAMING_ERROR (1<<FE0)
#define PARITY_ERROR (1<<UPE0)
#define DATA_OVERRUN (1<<DOR0)
 
// Get a character from the USART1 Receiver
#pragma used+
char getchar1(void)
{
char status,data;
while (1)
      {
      while (((status=UCSR1A) & RX_COMPLETE)==0);
      data=UDR1;
      if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0)
         return data;
      }
}
#pragma used-
 
// Write a character to the USART1 Transmitter
#pragma used+
void putchar1(char c)
{
while ((UCSR1A & DATA_REGISTER_EMPTY)==0);
UDR1=c;
}
#pragma used-
 
void printf1( unsigned char *Str)    
{    
while(*Str !=0) { putchar1(*(Str++)) ;}
}
 
// Timer1 output compare A interrupt service routine
interrupt [TIM1_COMPA] void timer1_compa_isr(void)
{
    t++;  
    tt++;
    if (t==50)
    {
        PORTB.1 = ~PORTB.1 ;
        t=0;
    }
 
}
 
// Voltage Reference: AVCC pin
#define ADC_VREF_TYPE ((0<<REFS1) | (1<<REFS0) | (1<<ADLAR))
 
// Read the AD conversion result
//unsigned int read_adc(unsigned char adc_input)
//{
//ADMUX=adc_input | ADC_VREF_TYPE;
// Delay needed for the stabilization of the ADC input voltage
//delay_us(10);
// Start the AD conversion
//ADCSRA|=(1<<ADSC);
// Wait for the AD conversion to complete
//while ((ADCSRA & (1<<ADIF))==0);
//ADCSRA|=(1<<ADIF);
//return ADCW;
//}
 
// ADC interrupt service routine
interrupt [ADC_INT] void adc_isr(void)
{
//unsigned char adc_data;
// Read the 8 most significant bits
// of the AD conversion result
}
 
interrupt [EXT_INT2] void ext_int2_isr(void)
{
PORTB.3 = 1;
delay_us(40);
ADCSRA=ADCSRA | (1<<ADSC);
while (((status=ADCSRA) & ADIF)==0);
//adc_data=ADCH;
ADCSRA|=(1<<ADIF);
adc_data = ADCW;
PORTB.3 = 0;
 
 
 
}
void main(void)
{
// Declare your local variables here
 
// Crystal Oscillator division factor: 1
#pragma optsize-
CLKPR=(1<<CLKPCE);
CLKPR=(0<<CLKPCE) | (0<<CLKPS3) | (0<<CLKPS2) | (0<<CLKPS1) | (0<<CLKPS0);
#ifdef _OPTIMIZE_SIZE_
#pragma optsize+
#endif
 
// Input/Output Ports initialization
// Port A initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In 
DDRA=(0<<DDA7) | (0<<DDA6) | (0<<DDA5) | (0<<DDA4) | (0<<DDA3) | (0<<DDA2) | (0<<DDA1) | (0<<DDA0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T 
PORTA=(0<<PORTA7) | (0<<PORTA6) | (0<<PORTA5) | (0<<PORTA4) | (0<<PORTA3) | (0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0);
 
// Port B initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=Out Bit2=In Bit1=Out Bit0=In 
DDRB=(0<<DDB7) | (0<<DDB6) | (0<<DDB5) | (0<<DDB4) | (1<<DDB3) | (0<<DDB2) | (1<<DDB1) | (0<<DDB0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T 
PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0);
 
// Port C initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In 
DDRC=(0<<DDC7) | (0<<DDC6) | (0<<DDC5) | (0<<DDC4) | (0<<DDC3) | (0<<DDC2) | (0<<DDC1) | (0<<DDC0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T 
PORTC=(0<<PORTC7) | (0<<PORTC6) | (0<<PORTC5) | (0<<PORTC4) | (0<<PORTC3) | (0<<PORTC2) | (0<<PORTC1) | (0<<PORTC0);
 
// Port D initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In 
DDRD=(0<<DDD7) | (0<<DDD6) | (1<<DDD5) | (0<<DDD4) | (0<<DDD3) | (0<<DDD2) | (0<<DDD1) | (0<<DDD0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T 
PORTD=(0<<PORTD7) | (0<<PORTD6) | (0<<PORTD5) | (0<<PORTD4) | (0<<PORTD3) | (0<<PORTD2) | (0<<PORTD1) | (0<<PORTD0);
 
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=0xFF
// OC0A output: Disconnected
// OC0B output: Disconnected
TCCR0A=(0<<COM0A1) | (0<<COM0A0) | (0<<COM0B1) | (0<<COM0B0) | (0<<WGM01) | (0<<WGM00);
TCCR0B=(0<<WGM02) | (0<<CS02) | (0<<CS01) | (0<<CS00);
TCNT0=0x00;
OCR0A=0x00;
OCR0B=0x00;
 
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: 2500,000 kHz
// Mode: CTC top=OCR1A
// OC1A output: Disconnected
// OC1B output: Disconnected
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer Period: 10 ms
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: On
// Compare B Match Interrupt: Off
TCCR1A=(0<<COM1A1) | (1<<COM1A0) | (0<<COM1B1) | (0<<COM1B0) | (0<<WGM11) | (0<<WGM10);
TCCR1B=(0<<ICNC1) | (0<<ICES1) | (0<<WGM13) | (1<<WGM12) | (0<<CS12) | (1<<CS11) | (0<<CS10);
TCNT1H=0x9E;
TCNT1L=0x58;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x61;
OCR1AL=0xA7;
OCR1BH=0x00;
OCR1BL=0x00;
 
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// OC2A output: Disconnected
// OC2B output: Disconnected
ASSR=(0<<EXCLK) | (0<<AS2);
TCCR2A=(0<<COM2A1) | (0<<COM2A0) | (0<<COM2B1) | (0<<COM2B0) | (0<<WGM21) | (0<<WGM20);
TCCR2B=(0<<WGM22) | (0<<CS22) | (0<<CS21) | (0<<CS20);
TCNT2=0x00;
OCR2A=0x00;
OCR2B=0x00;
 
// Timer/Counter 0 Interrupt(s) initialization
TIMSK0=(0<<OCIE0B) | (0<<OCIE0A) | (0<<TOIE0);
 
// Timer/Counter 1 Interrupt(s) initialization
TIMSK1=(0<<ICIE1) | (0<<OCIE1B) | (1<<OCIE1A) | (0<<TOIE1);
 
// Timer/Counter 2 Interrupt(s) initialization
TIMSK2=(0<<OCIE2B) | (0<<OCIE2A) | (0<<TOIE2);
 
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: On
// INT2 Mode: Rising Edge
// Interrupt on any change on pins PCINT0-7: Off
// Interrupt on any change on pins PCINT8-15: Off
// Interrupt on any change on pins PCINT16-23: Off
// Interrupt on any change on pins PCINT24-31: Off
EICRA=(1<<ISC21) | (1<<ISC20) | (0<<ISC11) | (0<<ISC10) | (0<<ISC01) | (0<<ISC00);
EIMSK=(1<<INT2) | (0<<INT1) | (0<<INT0);
EIFR=(1<<INTF2) | (0<<INTF1) | (0<<INTF0);
PCICR=(0<<PCIE3) | (0<<PCIE2) | (0<<PCIE1) | (0<<PCIE0);
 
// USART0 initialization
// Communication Parameters: 8 Data, 1 Stop, No Parity
// USART0 Receiver: On
// USART0 Transmitter: On
// USART0 Mode: Asynchronous
// USART0 Baud Rate: 9600
UCSR0A=(0<<RXC0) | (0<<TXC0) | (0<<UDRE0) | (0<<FE0) | (0<<DOR0) | (0<<UPE0) | (0<<U2X0) | (0<<MPCM0);
UCSR0B=(0<<RXCIE0) | (0<<TXCIE0) | (0<<UDRIE0) | (1<<RXEN0) | (1<<TXEN0) | (0<<UCSZ02) | (0<<RXB80) | (0<<TXB80);
UCSR0C=(0<<UMSEL01) | (0<<UMSEL00) | (0<<UPM01) | (0<<UPM00) | (0<<USBS0) | (1<<UCSZ01) | (1<<UCSZ00) | (0<<UCPOL0);
UBRR0H=0x00;
UBRR0L=0x81;
 
// USART1 initialization
// Communication Parameters: 8 Data, 1 Stop, No Parity
// USART1 Receiver: On
// USART1 Transmitter: On
// USART1 Mode: Asynchronous
// USART1 Baud Rate: 9600
UCSR1A=(0<<RXC1) | (0<<TXC1) | (0<<UDRE1) | (0<<FE1) | (0<<DOR1) | (0<<UPE1) | (0<<U2X1) | (0<<MPCM1);
UCSR1B=(0<<RXCIE1) | (0<<TXCIE1) | (0<<UDRIE1) | (1<<RXEN1) | (1<<TXEN1) | (0<<UCSZ12) | (0<<RXB81) | (0<<TXB81);
UCSR1C=(0<<UMSEL11) | (0<<UMSEL10) | (0<<UPM11) | (0<<UPM10) | (0<<USBS1) | (1<<UCSZ11) | (1<<UCSZ10) | (0<<UCPOL1);
UBRR1H=0x00;
UBRR1L=0x81;
 
// Analog Comparator initialization
// Analog Comparator: Off
// The Analog Comparator's positive input is
// connected to the AIN0 pin
// The Analog Comparator's negative input is
// connected to the AIN1 pin
ACSR=(1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACIC) | (0<<ACIS1) | (0<<ACIS0);
// Digital input buffer on AIN0: On
// Digital input buffer on AIN1: On
DIDR1=(0<<AIN0D) | (0<<AIN1D);
 
// ADC initialization
// ADC Clock frequency: 156,250 kHz
// ADC Voltage Reference: AVCC pin
// ADC Auto Trigger Source: ADC Stopped
// Only the 8 most significant bits of
// the AD conversion result are used
// Digital input buffers on ADC0: Off, ADC1: Off, ADC2: Off, ADC3: Off
// ADC4: Off, ADC5: Off, ADC6: Off, ADC7: Off
DIDR0=(1<<ADC7D) | (1<<ADC6D) | (1<<ADC5D) | (1<<ADC4D) | (1<<ADC3D) | (1<<ADC2D) | (1<<ADC1D) | (1<<ADC0D);
ADMUX=ADC_VREF_TYPE+3;
ADCSRA=(1<<ADEN) | (0<<ADSC) | (0<<ADATE) | (0<<ADIF) | (0<<ADIE) | (1<<ADPS2) | (0<<ADPS1) | (1<<ADPS0);
ADCSRB=(0<<ADTS2) | (0<<ADTS1) | (0<<ADTS0);
 
// SPI initialization
// SPI disabled
SPCR=(0<<SPIE) | (0<<SPE) | (0<<DORD) | (0<<MSTR) | (0<<CPOL) | (0<<CPHA) | (0<<SPR1) | (0<<SPR0);
 
// TWI initialization
// TWI disabled
TWCR=(0<<TWEA) | (0<<TWSTA) | (0<<TWSTO) | (0<<TWEN) | (0<<TWIE);
 
// Global enable interrupts
#asm("sei")
 
        printf("%x",ADMUX);
while (1)
      { 
        unsigned char ch1;
        ch1 = getchar();
        if (ch1=='$')
        {  
            ch1 = getchar();
            if (ch1=='Q')
            {
                if (index > 0 && index <64) printf("$h%02X",index);
                if (index = 64) printf("$C");
            }             
             if (ch1>='0' && ch1<='7')
            {       
                c = ch1 - 0x30;
                index = 0;  
                while (index <64)
                {
                    printf("2506000000%04X9001%02X", c, index); //выводит на UART0
                    //sprintf(Str,"2506000000%04X9001%02X", c, index) ; printf1(Str) ;  //выводит на UART1
                if (adc_data > max)
                {
                    max = adc_data; 
                    i_max = index;
                }
                if (adc_data < min)
                {
                    min = adc_data;   
                    i_min = index;
                } 
                index++;   
                }
                printf("\r| ADC = %d index = %d | | max = %d i = %d | min = %d i = %d |",adc_data, index, max, i_max, min, i_min) ; 
            }
         
        }
      }  
 
}