serial.i

atmega16的串口调试程序

// CodeVisionAVR C Compiler
// (C) 1998-2001 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega16


#pragma used+
sfrb TWBR=0;
sfrb TWSR=1;
sfrb TWAR=2;
sfrb TWDR=3;
sfrb ADCL=4;
sfrb ADCH=5;
sfrw ADCW=4;      // 16 bit access
sfrb ADCSRA=6;
sfrb ADMUX=7;
sfrb ACSR=8;
sfrb UBRRL=9;
sfrb UCSRB=0xa;
sfrb UCSRA=0xb;
sfrb UDR=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   // 16 bit access
sfrb UBRRH=0x20;
sfrb UCSRC=0X20;
sfrb WDTCR=0x21;
sfrb ASSR=0x22;
sfrb OCR2=0x23;
sfrb TCNT2=0x24;
sfrb TCCR2=0x25;
sfrb ICR1L=0x26;
sfrb ICR1H=0x27;
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  // 16 bit access
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  // 16 bit access
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  // 16 bit access
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb SFIOR=0x30;
sfrb OSCCAL=0x31;
sfrb OCDR=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb TWCR=0x36;
sfrb SPMCR=0x37;
sfrb TIFR=0x38;
sfrb TIMSK=0x39;
sfrb GIFR=0x3a;
sfrb GICR=0x3b;
sfrb OCR0=0X3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-

// Interrupt vectors definitions


// Needed by the power management functions (sleep.h)
#asm
	#ifndef __SLEEP_DEFINED__
	#define __SLEEP_DEFINED__
	.EQU __se_bit=0x40
	.EQU __sm_mask=0xB0
	.EQU __sm_powerdown=0x20
	.EQU __sm_powersave=0x30
	.EQU __sm_standby=0xA0
	.EQU __sm_ext_standby=0xB0
	.EQU __sm_adc_noise_red=0x10
	.SET power_ctrl_reg=mcucr
	#endif
#endasm



const unsigned char buffer[]="Hi,How are you?";

//UART0 initialize
// desired baud rate: 9600
// actual: baud rate:9600 (0.0%)
// char size: 8 bit
// parity: Disabled

void USART_Init( unsigned int baud )
{
unsigned int tmp;
/* 设置波特率*/
tmp= 11059200    /baud/16-1;
UBRRH = (unsigned char)(tmp>>8);
UBRRL = (unsigned char)tmp;
/*接收器与发送器使能*/
UCSRB = 0xD8;
/*设置帧格式: 8个数据位, 1停止位*/
UCSRC = 0x86;
}

//数据发送（发送5到8位数据位的帧
void USART_Transmit( unsigned char data )
{
/*等待发送缓冲器为空*/
while ( !( UCSRA & 0x20) )
;
/*将数据放入缓冲器,发送数据*/
UDR = data;
} 


//数据接收（以5到8个数据位的方式接收数据帧
unsigned char USART_Receive( void )
{
/*等待接收数据*/
while ( !(UCSRA & 0x80) )
;
/*从缓冲器中获取病返回数据*/
return UDR;
} 

//连续发送字符
void USART_Transmit_2( void )
{
while ( !( UCSRA & 0x20) )
;
UDR = 'H';
while ( !( UCSRA & 0x20) )
;
UDR = 'e';
while ( !( UCSRA & 0x20) )
;
UDR = 'l';
while ( !( UCSRA & 0x20) )
;
UDR = 'l';
while ( !( UCSRA & 0x20) )
;
UDR = 'o';
} 

void delay(int ms)
{
 int i,j;
 for(i=0;i<3000;i++)
  for(j=0;j<ms;j++) 
  ;
}

void main(void)
{
unsigned char n=0,tmp=0;

USART_Init(9600); //波特率9600初始化串口
//uart0_init();
DDRC =0xFF;
for(n=0;n<20;n++) //发送数组里面的字符串,[url]http://www.avrvi.com[/url]
{
USART_Transmit(buffer[n]);
PORTC.0=0x01;
PORTC.1=0x00;
delay(2);
PORTC.1=0x01;
delay(2);
}

USART_Transmit(0x0d); //发送一个回车   RED
for(n=0;n<10;n++){
  PORTC.0=0x00;
  delay(5);  
  PORTC.0=0x01;
  delay(5);
  }
USART_Transmit(0x0a); //发送一个换行 YELLOW
for(n=0;n<10;n++){
  PORTC.1=0x01;
  delay(5);
  PORTC.1=0x00;
  delay(5);
  }
while(1)
{
if(UCSRA & 0x80) //如果接收缓冲区有数据
{
tmp=USART_Receive(); //接收数据   YELLOW,RED
PORTC.1=0x01;
PORTC.0=0x00;
delay(10);
USART_Transmit(tmp); //发送数据  RED,YELLOW
PORTC.1=0x00;
PORTC.0=0x01;
delay(10);
if(tmp=='a')   //对接收到的数据进行，如果是a,再发一个OK回来
{
USART_Transmit('O');  //RED
 for(n=0;n<4;n++){
  PORTC.0=0x01;   
  delay(20);
  PORTC.0=0x00;
  delay(20);
  }
USART_Transmit('K');  //YELLOW
 for(n=0;n<8;n++){
 PORTC.1=0x01;
 delay(10);
 PORTC.1=0x00;
 delay(50);
 }
}
if(tmp=='A')   //对接收到的数据进行,如果是A,再发一个Hello回来
{
USART_Transmit_2();  // REN-ON,YELLOW =OFF
for(n=0;n<10;n++){
PORTC.0=0x01; 
PORTC.1=0X00;
delay(50);
PORTC.0=0x00;
PORTC.1=0x01;
delay(10);
}
}
//if(tmp=='G')   //对接收到的数据进行,如果是G,跳转flash程序区
//{
// MCUCR = 0x01; 
//  MCUCR = 0x00;             //将中断向量表迁移到应用程序区头部
//  RAMPZ = 0x00;             //RAMPZ清零初始化
//   asm("jmp 0x0000;\n");           //转到Flash的0x0000处，执行用户的应用程序 
//} 
}
}
}