11._c

这里有11个用ICCAVR开发的源代码,经DEMO板调试后已经通过.

//ICC-AVR application builder : 2005-3-15 10:10:23
// Target : M48
// Crystal: 8.0000Mhz

#include <iom48v.h>
#include <macros.h>
unsigned int adc_w;
unsigned	 int adc_old,bjz;
unsigned char ad_high,ad_low;
unsigned int adc[4]= {0x333,0x266,0x199,0xcc};

/*
#define adc_4 0x333;
#define	adc_3 0x266;
#define	adc_2 0x199;
#define	adc_1 0xcc;
*/
void port_init(void)
{
 PORTB = 0xFF;
 DDRB  = 0x07;
 PORTC = 0x7F; //m103 output only
 DDRC  = 0x00;
 PORTD = 0xFF;
 DDRD  = 0xFF;
}

//ADC initialize
// Conversion time: 13uS
void adc_init(void)
{
 ADCSRA = 0x00; //disable adc
 ADMUX = 0x40;  //select adc input 0
 ACSR  = 0x80;
 ADCSRB = 0x00;
 ADCSRA = 0xCB;
 
}

#pragma interrupt_handler adc_isr:22
void adc_isr(void)
{
 adc_w = ADC;
 ADMUX = 0x40;
 ADCSRA = 0xCB;
 //ad_high = adch;
 //ad_low = adcl;
 //conversion complete, read value (int) using...
 // value=ADCL;            //Read 8 low bits first (important)
 // value|=(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
 port_init();
 adc_init();

 MCUCR = 0x00;
 EICRA = 0x00; //extended ext ints
 EIMSK = 0x00;
 
 TIMSK0 = 0x00; //timer 0 interrupt sources
 TIMSK1 = 0x00; //timer 1 interrupt sources
 TIMSK2 = 0x00; //timer 2 interrupt sources
 
 PCMSK0 = 0x00; //pin change mask 0 
 PCMSK1 = 0x00; //pin change mask 1 
 PCMSK2 = 0x00; //pin change mask 2
 PCICR = 0x00; //pin change enable 
 PRR = 0x00; //power controller
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

/*显示函数*/
void	display(unsigned int com)
{
 unsigned int i;
 while(bjz != com)
 {
  bjz = com;
 if(com > adc[1])
 		{
		 i = com;
		 if(i > adc[0])
		 	  {alarm();}
			  else
			  	  PORTB = 0XFB;
		}
 else
 	 {
	  i = com;
	  if(i > adc[2])
	  	   PORTB = 0XFD;
		   else 
		   		{
				 if(i>adc[3])
				 	PORTB = 0XFE;
				 else 
				 	  PORTB = 0XFF;
				}
	 }		
  }		
}

void delay_us(int time)
{   //微秒延时  
 do
 {
  time--;
 }	
  while (time>1);
}	  

void delay_ms(unsigned int time)
{   //毫秒延时
 while(time!=0)
 {		
  delay_us(1000);
  time--;
 }
}


/*报警函数*/
void alarm(void)
{
 while(1){
 //i=PIND&0x04;   		  //读出PD2口状态
 if(adc_old >= adc[0])
 	 {PORTD^=0x08;
	 delay_ms(100);
	 }
 else
 	 PORTD=0XFF; 
 }
}

void   main()
{
 init_devices();
 while(1){
 		  if(adc_w != adc_old){
		  		   	  		   adc_old = adc_w;
							   display(adc_old);
							   }
		}  	 				    
}