PWM1(16비트) 제어 프로그램

#include <mega128.h> 

#include <stdio.h>

 

#define RXB8 1

#define TXB8 0

#define UPE 2

#define OVR 3

#define FE 4

#define UDRE 5

#define RXC 7

 

#define FRAMING_ERROR (1<<FE)

#define PARITY_ERROR (1<<UPE)

#define DATA_OVERRUN (1<<OVR)

#define DATA_REGISTER_EMPTY (1<<UDRE)

#define RX_COMPLETE (1<<RXC)

 

// USART0 Receiver buffer

#define RX_BUFFER_SIZE0 8

char rx_buffer0[RX_BUFFER_SIZE0];

unsigned char rx_wr_index0,rx_rd_index0,rx_counter0;

// This flag is set on USART0 Receiver buffer overflow

bit rx_buffer_overflow0;

 

char sbuf[20];

char rmCount;

unsigned int duty,period,hz,duty100;

 

// USART0 Receiver interrupt service routine

#pragma savereg-

interrupt [USART0_RXC] void uart0_rx_isr(void)

{

char status,data;

#asm

    push r26

    push r27

    push r30

    push r31

    in   r26,sreg

    push r26

#endasm

status=UCSR0A;

data=UDR0;   

 

if(data == 0x02) {//문자 R

              rx_wr_index0 = 0;  

              rmCount = 0;

} 

 

if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0)

   {

   rx_buffer0[rx_wr_index0]=data;

   if (++rx_wr_index0 == RX_BUFFER_SIZE0) rx_wr_index0=0;

   if (++rx_counter0 == RX_BUFFER_SIZE0)

      {

      rx_counter0=0;

      rx_buffer_overflow0=1;

      };

   };

#asm

    pop  r26

    out  sreg,r26

    pop  r31

    pop  r30

    pop  r27

    pop  r26

#endasm  

if(rx_buffer0[0]==0x02) {

              switch(rx_buffer0[1]){

                             case 0x30:            

                                           TCCR1B=0x15;      // 1024분주

                                           break;

                             case 0x31:            

                                           TCCR1B=0x14;      // 256분주

                                           break;

                             case 0x32:            

                                           TCCR1B=0x13;      // 64분주

                                           break;

                             case 0x33:            

                                           TCCR1B=0x12;      // 8분주

                                           break;

              }

 

              OCR1AH = rx_buffer0[2];

              OCR1AL = rx_buffer0[3]; 

              OCR1BH = rx_buffer0[4];

              OCR1BL = rx_buffer0[5];

}

rmCount++;

}

#pragma savereg+

 

#ifndef _DEBUG_TERMINAL_IO_

// Get a character from the USART0 Receiver buffer

#define _ALTERNATE_GETCHAR_

#pragma used+

char getchar(void)

{

char data;

while (rx_counter0==0);

data=rx_buffer0[rx_rd_index0];

if (++rx_rd_index0 == RX_BUFFER_SIZE0) rx_rd_index0=0;

#asm("cli")

--rx_counter0;

#asm("sei")

return data;

}

#pragma used-

#endif

 

// USART0 Transmitter buffer

#define TX_BUFFER_SIZE0 8

char tx_buffer0[TX_BUFFER_SIZE0];

unsigned char tx_wr_index0,tx_rd_index0,tx_counter0;

 

// USART0 Transmitter interrupt service routine

#pragma savereg-

interrupt [USART0_TXC] void uart0_tx_isr(void)

{

#asm

    push r26

    push r27

    push r30

    push r31

    in   r26,sreg

    push r26

#endasm

if (tx_counter0)

   {

   --tx_counter0;

   UDR0=tx_buffer0[tx_rd_index0];

   if (++tx_rd_index0 == TX_BUFFER_SIZE0) tx_rd_index0=0;

   };

#asm

    pop  r26

    out  sreg,r26

    pop  r31

    pop  r30

    pop  r27

    pop  r26

#endasm

}

#pragma savereg+

 

#ifndef _DEBUG_TERMINAL_IO_

// Write a character to the USART0 Transmitter buffer

#define _ALTERNATE_PUTCHAR_

#pragma used+

void putchar(char c)

{

while (tx_counter0 == TX_BUFFER_SIZE0);

#asm("cli")

if (tx_counter0 || ((UCSR0A & DATA_REGISTER_EMPTY)==0))

   {

   tx_buffer0[tx_wr_index0]=c;

   if (++tx_wr_index0 == TX_BUFFER_SIZE0) tx_wr_index0=0;

   ++tx_counter0;

   }

else

   UDR0=c;

#asm("sei")

}

#pragma used-

#endif

 

// Declare your global variables here

 

void main(void)

{

// Declare your local variables here

 

// Input/Output Ports initialization

// Port A initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTA=0x00;

DDRA=0x00;

 

// Port B initialization

// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out

// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0

PORTB=0x00;

DDRB=0xFF;

 

// Port C initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTC=0x00;

DDRC=0x00;

 

// Port D initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTD=0x00;

DDRD=0x00;

 

// Port E initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTE=0x00;

DDRE=0x00;

 

// Port F initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In Func7=In

// State0=T State1=T State2=T State3=T State4=T State5=T State6=T State7=T

PORTF=0x00;

DDRF=0x00;

 

// Port G initialization

// Func0=In Func1=In Func2=In Func3=In Func4=In

// State0=T State1=T State2=T State3=T State4=T

PORTG=0x00;

DDRG=0x00;

 

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

ASSR=0x00;

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

 

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: 250.000 kHz

// Mode: Ph. & fr. cor. PWM top=OCR1A

// OC1A output: Discon.

// OC1B output: Non-Inv.

// OC1C output: Discon.

// Noise Canceler: Off

// Input Capture on Falling Edge

TCCR1A=0x21; 

//TCCR1B=0x15;    // 1024분주

TCCR1B=0x13;      // 64분주   

//TCCR1B=0x12;    // 8분주

TCCR1C=0x00;

/*

TCNT1H=0x00;

TCNT1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

OCR1CH=0x00;

OCR1CL=0x00; 

*/

hz=100;

duty100=80;

//period=(unsigned int)(7812.5/hz);                      // 1024분주  

period=(unsigned int)(125000/hz);                       // 64분주  

//period=(unsigned int)(1000000/hz);                 // 8분주 

duty = (unsigned int)(period*duty100/100);  

OCR1AH = (period>>8);

OCR1AL = period & 0xff; 

OCR1BH = (duty>>8);

OCR1BL = duty & 0xff;

//PORTB.2=1;       //회전방향 설정 0=CCW 1=CW 

 

// Timer/Counter 2 initialization

// Clock source: System Clock

// Clock value: Timer 2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

TCCR2=0x00;

TCNT2=0x00;

OCR2=0x00;

 

// Timer/Counter 3 initialization

// Clock source: System Clock

// Clock value: Timer 3 Stopped

// Mode: Normal top=FFFFh

// OC3A output: Discon.

// OC3B output: Discon.

// OC3C output: Discon.

TCCR3A=0x00;

TCCR3B=0x00;

TCNT3H=0x00;

TCNT3L=0x00;

OCR3AH=0x00;

OCR3AL=0x00;

OCR3BH=0x00;

OCR3BL=0x00;

OCR3CH=0x00;

OCR3CL=0x00;

 

// External Interrupt(s) initialization

// INT0: Off

// INT1: Off

// INT2: Off

// INT3: Off

// INT4: Off

// INT5: Off

// INT6: Off

// INT7: Off

EICRA=0x00;

EICRB=0x00;

EIMSK=0x00;

 

// Timer(s)/Counter(s) Interrupt(s) initialization

TIMSK=0x00;

ETIMSK=0x00;

 

// USART0 initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART0 Receiver: On

// USART0 Transmitter: On

// USART0 Mode: Asynchronous

// USART0 Baud rate: 9600

UCSR0A=0x00;

UCSR0B=0xD8;

UCSR0C=0x06;

UBRR0H=0x00;

UBRR0L=0x67;

 

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

// Analog Comparator Output: Off

ACSR=0x80;

SFIOR=0x00; 

 

// Global enable interrupts

#asm("sei")  

               

while (1)

      {

      // Place your code here

 

      };

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