evmlogic.c

TI公司TMS320VC5509的外设驱动程序

/*
 *  Copyright (C) 2001, Spectrum Digital, Inc.  All Rights Reserved.
 */
 
#include "5509.h"
#include "util.h"

#define LATCH_ADDR     ((volatile unsigned *)0x401000)
#define DISPLAY_ADDR0  ((volatile unsigned *)0x401800)
#define DISPLAY_ADDR1  ((volatile unsigned *)0x401808)
#define FLASH_BASE     0x200000

void Logic_SetPage(unsigned int highaddr)
{
    *LATCH_ADDR = highaddr;
}

unsigned short Logic_ReadFlash(unsigned long addr)
{
    *LATCH_ADDR = (addr >> 12 & 0xff);
    return *((unsigned short *)(FLASH_BASE + (addr & 0x0fff)));
}

void Logic_WriteFlash(unsigned long addr, unsigned int data)
{
    *LATCH_ADDR = (addr >> 12 & 0xff);
    *((unsigned short *)(FLASH_BASE + (addr & 0x0fff))) = data;  
}

void Logic_WriteDisplay(int a0, unsigned short displaydata)
{
    if (a0 != 0)
        *DISPLAY_ADDR1 = displaydata;
    else
        *DISPLAY_ADDR0 = displaydata;
//    SWDelayUsec(20);
}