// Copyright 2006 Yamane Akira
//ICC-AVR application builder : 2005/08/17 15:29:42
// Target : M48
// Crystal: 8.0000Mhz

#include <iom48v.h>
#include <macros.h>

void port_init(void)
{
 PORTB = 0xFF;
 DDRB  = 0xFF;
 PORTC = 0x00; //m103 output only
 DDRC  = 0x00;
 PORTD = 0xEF;
 DDRD  = 0x14; // set PD4 & PD2 as output for SCK & SS
}

//UART0 initialize
// desired baud rate: 100000
// actual: baud rate:100000 (0.0%)
void uart0_init(void)
{
 UCSR0B = 0x00; //disable while setting baud rate
 UCSR0A = 0x00;
 UCSR0C = 0xC0;
 UCSR0B = 0x18;
 UBRR0L = 0x04; //set baud rate lo
 UBRR0H = 0x00; //set baud rate hi
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 CLI(); //disable all interrupts
 port_init();
 uart0_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
}

unsigned char USART_MSPIM(unsigned char tdata)
  {
  while (!(UCSR0A & (1 << UDRE0)));
    UDR0=tdata;
  while (!(UCSR0A & (1 << RXC0)));
    return UDR0;
  }

void delay()
  {
    unsigned char a,b;
	  for (a=1; a; a++)
	    for (b=1; b; b++)
		  ;
  }   

//
void main(void)
{
  unsigned char i;
 init_devices();

  while(1)
    {
      for (i=0; i<8; i++)
	  	 {
	       PORTD &= ~0x04;
	         PORTB = USART_MSPIM(i);
	       PORTD |= ~0x04;
		    delay();		   
	     }
	}
}