main._c

单片机的应用程序

#include <iom48v.h>
#include <macros.h>
#include "CommonDefs.h"
#include "lcd.h"
#include "iic_slave.h"

void port_init(void)
{
 PORTB = 0x00;
 DDRB  = 0x00;
 PORTC = 0x00; //m103 output only
 DDRC  = 0xFF;
 PORTD = 0x99;
 DDRD  = 0xFF;
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_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
}

void main()
{
  unsigned char i = 0;
  unsigned char j = 0;
  unsigned char msg[] = "HITSOC Center";
  unsigned char ret = 0;
  unsigned char errcnt = 0;
  unsigned char passcnt = 0;
  unsigned char cmd = 0;

  init_devices();
  
  // LCD settings
  LCD_hard_init();
  LCD_cls();
  LCD_puts(0,0,msg,1);

  ret = i2c_slave_init_recv();
  if (ret!=1) LCD_putchardec(0,1,ret,0);
  else LCD_puts(0,1,"IIC recv Init",1);	  

  while(1){
	  delay_nms(100);
  	  
	  // keyboard input
	  DDRC &= 0xF0;
      PORTC |= 0x0F;
      _NOP();
      i = PINC & 0x0F;
      
	  // LCD display
//	  LCD_putchar(10*8,1,'0'+i,0);  
      
  	  // IIC Transmission
	  if (i == 0x07){

	  	  ret = i2c_slave_recvcommand(&cmd);
  		  if (ret != 1) LCD_putchardec(0,2,ret,0);
		  else LCD_puts(0,2,"recv OK.",1);
		  
		  ret = i2c_slave_init_send();
		  if (ret!=1) LCD_putchardec(0,3,ret,0);
		  else LCD_puts(0,3,"IIC send Init",1);	  
				  		  
		  if(cmd = 0x34){ 
		  	  	ret = i2c_slave_sendbyte(0x89);
	  	  		if (ret != 1){
				  LCD_puts(0,3,"transmit error.",1);
	    	      LCD_putchardec(0,4,ret,0);
		          LCD_putchardec(0,5,++errcnt,0);
				}
		        else{
		          LCD_putchardec(0,6,++passcnt,0);
		        }
		  }	  
	  }
  }  
}