m128_my.c

ewts avr驱动程序 角速度传感器 104为秒

//ICC-AVR application builder : 2007-2-21 下午 09:30:23
// Target : M128
// Crystal: 8.0000Mhz

#include <iom128v.h>
#include <macros.h>
int v=0;
unsigned int time=0;

void port_init(void)
{

}

//ADC initialize
// Conversion time: 3uS
void adc_init(void)
{
 ADCSRA = 0x00; //disable adc
 ADMUX = 0x00; //select adc input 0
 ACSR  = 0x80;
 ADCSRA = 0xE9;
}

#pragma interrupt_handler adc_isr:22
void adc_isr(void)
{
 //conversion complete, read value (int) using...
 v=ADCL;            //Read 8 low bits first (important)
 v|=(int)ADCH << 8; //read 2 high bits and shift into top byte
 
 
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 XDIV  = 0x00; //xtal divider
 XMCRA = 0x00; //external memory
 port_init();
 adc_init();
timer0_init();

 MCUCR = 0x00;
 EICRA = 0x0A; //extended ext ints
 EICRB = 0x00; //extended ext ints
 EIMSK = 0x03;
 TIMSK = 0x01; //timer interrupt sources
 ETIMSK = 0x00; //extended timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}



//TIMER0 initialize - prescale:64
// WGM: Normal
// desired value: 1mSec
// actual value:  1.000mSec (0.0%)
void timer0_init(void)
{
 TCCR0 = 0x00; //stop
 ASSR  = 0x00; //set async mode
 TCNT0 = 0x83; //set count
 OCR0  = 0x7D;
 TCCR0 = 0x04; //start timer
}

#pragma interrupt_handler timer0_ovf_isr:17
void timer0_ovf_isr(void)
{
 TCNT0 = 0x83; //reload counter value
 time++;
}
#pragma interrupt_handler int0_isr:2
void int0_isr(void)
{
 //external interupt on INT0
 EIMSK = 0x00;
 PORTB=0xfe;
}

#pragma interrupt_handler int1_isr:3
void int1_isr(void)
{
 //external interupt on INT1
  EIMSK = 0x00;
  PORTB=0xfd;
}


/*          传送ASCII字母到LCD            */
/*          x:0x00~0x0f y:0~64            */	
void asc_tran1(unsigned char x,unsigned char y,unsigned char *asc_p)
    {
	 x+=4;
	 //while((*asc_p)!=0)
	    {
		 ocmj_write(0xf1);
		 ocmj_write(x);
		 ocmj_write(y);
		 ocmj_write(*asc_p);
		 asc_p++;
		 if (x<0x13) 
		    x++;
		 else
		   {
		    x=0x04;
			y+=8;		    
		   }	
		}	
	}
	
	
	
main()
{
int x=0,a=0,i=0;
char j=0;
char code[]={'0','1','2','3','4','5','6','7','8','9','-','+',};
DDRD=0x00;
PORTD=0x03;

//while(1);
init_devices();

ocmj_init();//初始化	
ocmj_write(0xf4);//清屏
hz_tran(3,0,"数模转换");//传送内部汉字



DDRB=0x03;
PORTB=0xfc;
//while(1);
while(1)
 { 	for(j=0;j<128;j++)	
 	{	x=v;
 		pset(j,x/17);
		for(i=0;i<7;i++)
		{
		 if (x<0)
			{x=-x;asc_tran1(9-7,50,& code[10]);}
		 a=x%10;
		 asc_tran1(10-i,50,& code[a]);
		 x=x/10;
		}	//for
		delay_ms(1);	
	if (time>100)	
	{	EIMSK = 0x03;
		PORTB=0xfc;
	}	
		//asm("cbi 0x03,0");
		//asm("cbi 0x03,1");
	}//for
	ocmj_write(0xf4);//清屏	
 }
}