hal_flash_inf.c

来自「基于ARM和uC/OS-II实现的串口控制台」· C语言 代码 · 共 116 行

/******************************************************************
* File name     : hal_flash_dev.c                                 *   
* Description   : Functions to register a flash device to the     *
*                 "generic" flash interface                       *
* Others        :                                                 *                                                         *
* Function List :                                                 *
*   1. hal_flash_open_dev()                                       *
*   2. hal_flash_close_dev()                                      *
*                                                                 *
* History:                                                        * 
*                                                                 *
*   1. Date       : 2006.11.12                                    *
*      Author     : Zhijie Zeng                                   *
*      Version    : 1.0                                           *
*      Description: Created                                       *
******************************************************************/

#include "../../inc/pub/hal_errno.h"
#include "../../inc/pub/hal_llist.h"
#include "../../inc/dev/hal_flash_dev.h"
#include "../../inc/dev/hal_file.h"

HAL_LLIST_HEAD(hal_flash_dev_list);

hal_flash_fd* hal_flash_dev_open(const char* name)
{
    hal_flash_dev* dev = (hal_flash_dev*)hal_find_dev(name, &hal_flash_dev_list);
    
    if ((dev) && dev->open)
    {
        return dev->open(dev, name);
    }
    
    return dev;
}

void hal_flash_dev_close(hal_flash_fd* fd)
{
    if (fd && fd->close)
    {
        fd->close(fd);
    }
    return;
}

int hal_write_flash(
                    hal_flash_fd* fd, 
                    int offset, 
                    hal_u8* src_addr, 
                    int length )
{
    if (fd && fd->write)
    {
        return fd->write( fd, offset, src_addr, length );
    }else
    {
        return -1;
    }
}

/*
 *  hal_read_flash
 *
 *  提供本函数的目的是使串行FLASH也能统一到同一个框架中
 */
int hal_read_flash( 
                    hal_flash_fd* fd, int offset, 
                    hal_u8* dest_addr, int length )
{
    if (fd && fd->read)
    {
        return fd->read( fd, offset, dest_addr, length );
    }else
    {
        return -1;    
    }
}

/*
 *  hal_get_flash_info
 *
 *  返回FLASH扇区的信息
 */
int hal_get_flash_info( 
                        hal_flash_fd* fd, flash_region* info, 
                        int* number_of_regions)
{
    if (fd && fd->get_info)
    {    
        return fd->get_info( fd, info, number_of_regions);
    }else
    {
        return -1;    
    }
}

/*
 *  hal_erase_flash_block
 *
 *  擦除指定的块或扇区
 */
int hal_erase_flash_block( 
                          hal_flash_fd* fd, int block) 
{
    int ret_code;
    if (fd && fd->erase_block)
    {
        ret_code = fd->erase_block( fd, block );
        return ret_code;
    }else
    {
        return -1;    
    }
    
}