Serial ports on the SA1100

A program to test the serial port.

#include <stdio.h>

#include "strongarm.h"

#include "irq.h"

#include "mmu.h"

#include "timer.h"

unsigned serialGetBaudRateDivisor(unsigned br)

{

return((((3686400/(16*br))-1) & 0x0FFF));

}

int count;

__irq void Serial_Handler( void ) {

unsigned* icip = (unsigned *)IC_BASE;

struct sp_regs * sp1 = (struct sp_regs *)SP1_BASE;

// respond to only serial port 1 interrupts

if ( ((*icip) & 0x00008000) != 0 ) {

count++;

// clear appropriate status bits

(sp1->utsr0) |= 0x1C;

}