flash_49bv.c

ARM入门的好帮手.包含了从简单到相对较复杂的程序.

//*-----------------------------------------------------------------------------
//*      ATMEL Microcontroller Software Support  -  ROUSSET  -
//*-----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*-----------------------------------------------------------------------------
//* File Name               : flash_49BV.c
//* Object                  : FLASH procedure
//*
//* 1.0 27/04/99 JPP        : Creation
//*-----------------------------------------------------------------------------

/* Include Standard c Libraries to allow stand alone compiling and operation */

#include <stdio.h>
#include "flash_49BV.h"
#include "desc_flash_16x4.h"
#include "global_def.h"

//*----------------------------------------------------------------------------
//* Function Name       : at91_init_flash_table
//* Object              : indentify flash sector
//* Input Parameters    : flash_word sector_id : sector id
//* Output Parameters   : flash_word sector id or FLASH_SECTOR_ERROR
//* Functions called    : none
//*----------------------------------------------------------------------------
void at91_init_flash_table ( FlashDef *FlashTable )
//* Begin
{
    int cmpt;
    //* init sector table
    for ( cmpt = 0; cmpt < FlashTable->sector_nb ; cmpt ++ )
    {
        FlashTable->erase_sector[cmpt].sector=ERASED_SECTOR;
    }
//* End
}

//*----------------------------------------------------------------------------
//* Function Name       : at91_check_erase_sector
//* Object              : indentify flash sector
//* Input Parameters    : flash_word sector_id : sector id
//* Output Parameters   : flash_word sector id or FLASH_SECTOR_ERROR
//* Functions called    : none
//*----------------------------------------------------------------------------
unsigned int at91_check_erase_sector ( FlashDef *FlashTable,flash_word sector_id)
//* Begin
{
    return ( FlashTable->erase_sector[sector_id].sector);
//* End
}
//*----------------------------------------------------------------------------
//* Function Name       : at91_set_erase_sector
//* Object              : set the sector errased
//* Input Parameters    : flash_word sector_id : sector id
//* Output Parameters   : flash_word sector id or FLASH_SECTOR_ERROR
//* Functions called    : none
//*----------------------------------------------------------------------------
void at91_set_erase_sector ( FlashDef *FlashTable,flash_word sector_id)
//* Begin
{
    FlashTable->erase_sector[sector_id].sector= UNERASED_SECTOR;
//* End
}

//*----------------------------------------------------------------------------
//* Function Name       : at91_get_flash_sector_size
//* Object              : indentify flash sector
//* Input Parameters    : flash_word *load_addr: Flash data address
//* Output Parameters   : size for the sector
//* Functions called    : none
//*----------------------------------------------------------------------------
flash_word  at91_get_flash_sector_size ( FlashDef *FlashTable, int sector)
{
    flash_word  current_addr ;
    int         sector_id;
    int         block;

    //* calculate the internal Flash address
    current_addr =0;
    sector_id = 0 ; block=0;



    current_addr =  (FlashTable->org[block].sector_size);
    //* determine the sector in the sector table
    for (sector_id = 0 , block=0;
         (sector_id < sector );
         sector_id++)
    {
        //* Check if new block
        if ( sector >= FlashTable->org[block].sector_number)
        {
            block ++ ;
            sector = 0 ;
        }
        //* caculate the curent address
        current_addr =  current_addr +(FlashTable->org[block].sector_size);
    }

    return ( current_addr) ;
//* End
}
//*----------------------------------------------------------------------------
//* Function Name       : at91_get_flash_sector
//* Object              : indentify flash sector
//* Input Parameters    : flash_word *load_addr : Flash data address
//* Output Parameters   : flash_word sector id or FLASH_SECTOR_ERROR
//* Functions called    : none
//*----------------------------------------------------------------------------
int at91_get_flash_sector ( FlashDef *FlashTable,flash_word load_addr, flash_word base_addr)
{
    flash_word  current_addr ;
    int         sector_id;
    int         sector;
    int         block;

    //* calculate the internal Flash address
    current_addr =((int)load_addr -(int)base_addr);

    //* if current_addr is to low
    if ( current_addr < 0)  return (FLASH_SECTOR_ERROR);

    //* determine the sector in the sector table
    for (sector_id = 0 , block=0,sector = 0;
         (sector_id < (FlashTable->sector_nb)+1)&( current_addr >= 0 );
         sector_id++,sector++)
    {
        //* Check if new block
        if ( sector >= FlashTable->org[block].sector_number)
        {
            block ++ ;
            sector = 0 ;
        }
        //* caculate the curent address
        current_addr =  current_addr - (FlashTable->org[block].sector_size);
    }
    if ( sector_id > FlashTable->sector_nb)  return (FLASH_SECTOR_ERROR);
     //* Return sector_id
    sector_id-- ;
    return ( sector_id) ;
//* End
}

//*----------------------------------------------------------------------------
//* Function Name       : printFlashInfo
//* Object              : Format print info
//* Input Parameters    : char * addresse of message, Len
//* Output Parameters   :
//* Functions called    : sprintf
//*----------------------------------------------------------------------------
void printFlashInfo ( char *message,int * len,FlashDef *FlashTable)
//* Begin
{
    if (
        (FlashTable->type !=0 )&&
        (FlashTable->manufacturer != 0)
       )
    {
        *len += sprintf(message+*len,"- Flash: %s, %d sectors \nStart address: 0x%08X  \nLoad address: 0x%08X\n",
            FlashTable->name,
            FlashTable->sector_nb,
            FlashTable->add,
            FlashTable->load_add
            );
        *len += sprintf(message+*len,"Type: 0x%04X, Manufactured: 0x%04X",
            FlashTable->type,
            FlashTable->manufacturer
            );
    }
    else
    {
        *len += sprintf(message+*len,"- Flash :unknow\n");
    }
//* end
}
//* End of file