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[/] [minsoc/] [trunk/] [sw/] [uart/] [uart.c] - Rev 2

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#include "../support/support.h"
#include "../support/board.h"
#include "../support/uart.h"
 
#include "../support/spr_defs.h"
 
void uart_print_str(char *);
void uart_print_long(unsigned long);
 
// Dummy or32 except vectors
void buserr_except(){}
void dpf_except(){}
void ipf_except(){}
void lpint_except(){}
void align_except(){}
void illegal_except(){}
/*void hpint_except(){
 
}*/
void dtlbmiss_except(){}
void itlbmiss_except(){}
void range_except(){}
void syscall_except(){}
void res1_except(){}
void trap_except(){}
void res2_except(){}
 
 
void uart_interrupt()
{
    char lala;
    unsigned char interrupt_id;
    interrupt_id = REG8(UART_BASE + UART_IIR);
    if ( interrupt_id & UART_IIR_RDI )
    {
        lala = uart_getc();
        uart_putc(lala+1);
    }
}
 
 
void uart_print_str(char *p)
{
        while(*p != 0) {
                uart_putc(*p);
                p++;
        }
}
 
void uart_print_long(unsigned long ul)
{
  int i;
  char c;
 
 
  uart_print_str("0x");
  for(i=0; i<8; i++) {
 
  c = (char) (ul>>((7-i)*4)) & 0xf;
  if(c >= 0x0 && c<=0x9)
    c += '0';
  else
    c += 'a' - 10;
  uart_putc(c);
  }
 
}
 
void uart_print_short(unsigned long ul)
{
  int i;
  char c;
  char flag=0;
 
 
  uart_print_str("0x");
  for(i=0; i<8; i++) {
 
  c = (char) (ul>>((7-i)*4)) & 0xf;
  if(c >= 0x0 && c<=0x9)
    c += '0';
  else
    c += 'a' - 10;
  if ((c != '0') || (i==7))
    flag=1;
  if(flag)
    uart_putc(c);
  }
 
}
 
 
 
int main()
{
	uart_init();
 
	int_init();
	int_add(2,&uart_interrupt);
 
	/* We can't use printf because in this simple example
	   we don't link C library. */
	uart_print_str("Hello World.\n\r");
 
	report(0xdeaddead);
	or32_exit(0);
}
 

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