661 lines
22 KiB
C
661 lines
22 KiB
C
#include "os/os_api.h"
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#include "asm/crc16.h"
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#include "stdlib.h"
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#include "fs/fs.h"
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#include "system/includes.h"
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#include "nor_interface.h"
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#include "nor_rec_fs.h"
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#define RECFILEHEAD SDFILE_FILE_HEAD
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#define NO_DEBUG_EN
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#ifdef NO_DEBUG_EN
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#undef r_printf
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#undef y_printf
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#define r_printf(...)
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#define y_printf(...)
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#endif
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OS_MUTEX recfs_mutex; ///<互斥信号量
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void recfs_mutex_init(void) ///<信号量初始化
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{
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static u8 init = 0;
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if (init) {
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return;
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}
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init = 1;
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os_mutex_create(&recfs_mutex);
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}
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void recfs_mutex_enter(void) ///<申请信号量
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{
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recfs_mutex_init();
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os_mutex_pend(&recfs_mutex, 0);
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}
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void recfs_mutex_exit(void) ///<释放信号量
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{
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os_mutex_post(&recfs_mutex);
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 提供给录音文件系统的物理读函数
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@param addr:读取的地址，字节单位。
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@param len:读取的长度，字节单位。
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@param buf:读取的目标BUFF。
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@return u16:读取的长度
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@author liujie
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@note u8 recpfs_read(u32 addr,u8 *buf,u16 len)
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*/
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/*----------------------------------------------------------------------------*/
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u16 recpfs_read(NOR_RECFILESYSTEM *pfs, u32 addr, u8 *buf, u16 len)
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{
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putchar('r');
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recfs_mutex_enter();
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pfs->read(pfs->device, buf, addr, len);
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recfs_mutex_exit();
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return len;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 提供给录音文件系统的物理写函数
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@param addr:要写入设备的地址，字节单位。
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@param len:需要写入的长度，字节单位。
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@param buf:数据来源BUFF。
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@return u16:写入的长度
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@author liujie
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@note u16 recpfs_write(u32 addr,u8 *buf,u16 len)
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*/
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/*----------------------------------------------------------------------------*/
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u16 recpfs_write(NOR_RECFILESYSTEM *pfs, u32 addr, u8 *buf, u16 len)
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{
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putchar('w');
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recfs_mutex_enter();
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pfs->write(pfs->device, buf, addr, len);
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recfs_mutex_exit();
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return len;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 提供给录音文件系统的物理写函数(对齐)
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@param pfs:文件系统句柄
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@param addr:要写入设备的地址，字节单位。
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@param len:需要写入的长度，字节单位。
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@param buf:数据来源BUFF。
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@return u16:写入的长度
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@author liujie
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@note u16 recpfs_write_align(NOR_RECFILESYSTEM *pfs, u32 addr,u8 *buf,u16 len)
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*/
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/*----------------------------------------------------------------------------*/
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u16 recpfs_write_align(NOR_RECFILESYSTEM *pfs, u32 addr, u8 *buf, u16 len)
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{
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u32 align_addr = addr % FLASH_PAGE_SIZE;
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u16 rlen = FLASH_PAGE_SIZE - align_addr;
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u16 total_len = len;
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u8 *tmpbuf = pfs->buf;
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if (len == 90) {
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align_addr = 0;
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}
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addr -= align_addr;
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if (align_addr) {
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memset(tmpbuf, 0xff, FLASH_PAGE_SIZE);
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if (rlen > len) {
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rlen = len;
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}
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memcpy(tmpbuf + align_addr, buf, rlen);
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putchar('C');
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recpfs_write(pfs, addr, tmpbuf, FLASH_PAGE_SIZE);
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memset(tmpbuf, 0, FLASH_PAGE_SIZE);
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len -= rlen;
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buf += rlen;
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addr += FLASH_PAGE_SIZE;
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}
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while (len >= FLASH_PAGE_SIZE) {
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putchar('A');
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memset(tmpbuf, 0xff, FLASH_PAGE_SIZE);
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memcpy(tmpbuf, buf, FLASH_PAGE_SIZE);
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recpfs_write(pfs, addr, tmpbuf, FLASH_PAGE_SIZE);
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len -= FLASH_PAGE_SIZE;
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buf += FLASH_PAGE_SIZE;
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addr += FLASH_PAGE_SIZE;
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}
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if (len) {
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putchar('B');
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memset(tmpbuf, 0xff, FLASH_PAGE_SIZE);
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memcpy(tmpbuf, buf, len);
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recpfs_write(pfs, addr, tmpbuf, len);
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}
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return total_len;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 提供给录音文件系统的物理擦除函数
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@param pfs:要写入设备的地址，字节单位。
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@param start_sector:需要擦除的第一个扇区。
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@param end_sector:需要擦除的最后一个扇区。
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@return u16:擦除的扇区数目
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@author liujie
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@note u16 recpfs_erase_sector(NOR_RECFILESYSTEM *pfs,u16 start_sector,u16 end_sector)
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*/
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/*----------------------------------------------------------------------------*/
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u16 recpfs_erase_sector(NOR_RECFILESYSTEM *pfs, u16 start_sector, u16 end_sector)
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{
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if ((start_sector < pfs->first_sector) || (start_sector > pfs->last_sector)) {
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return 0 ;
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}
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if ((end_sector < pfs->first_sector) || (end_sector > pfs->last_sector)) {
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return 0 ;
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}
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u16 sector_cnt = 0;
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/* r_printf(">>>[test]:start_sector = %d, end_sector =%d\n", start_sector , end_sector); */
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while (1) {
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recfs_mutex_enter();
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pfs->eraser(pfs->device, ((u32)start_sector << pfs->sector_size));
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recfs_mutex_exit();
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sector_cnt++;
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if (start_sector == end_sector) {
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break;
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}
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start_sector++;
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if (start_sector > pfs->last_sector) {
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start_sector = pfs->first_sector;
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}
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}
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return sector_cnt;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 录音文件seek函数
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@param pfile:文件句柄
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@param type:seek的格式
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@param offsize:seek的偏移量。
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@return u8:返回值
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@author liujie
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@note u8 recfile_seek (REC_FILE *pfile, u8 type, u32 offsize)
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*/
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/*----------------------------------------------------------------------------*/
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u8 recfile_seek(NOR_REC_FILE *pfile, u8 type, int offsize)
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{
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u32 file_len;
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if (NULL == pfile) {
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return 0;
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}
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/* y_printf(">>>[test]:pfile->len = %d,type = %d, offsize = %d\n",pfile->len, type, offsize); */
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file_len = pfile->len;//(u32)pfile->index.sector << pfile->pfs->sector_size;
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if (NOR_FS_SEEK_SET == type) {
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if (abs(offsize) >= file_len) {
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return REC_FILE_END;
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}
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pfile->rw_p = offsize + sizeof(RECFILEHEAD);
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} else {
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offsize += pfile->rw_p;
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if (offsize >= file_len) {
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return REC_FILE_END;
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}
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pfile->rw_p += offsize;
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}
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return 0;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 录音文件读函数
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@param pfile:文件句柄
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@param buff:数据BUFF
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@param btr:需要读取的数据长度，字节单位
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@return u16:读取回来的长度
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@author liujie
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@note u16 recfile_read(REC_FILE _xdata *pfile ,u8 _xdata *buff , u16 btr)
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*/
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/*----------------------------------------------------------------------------*/
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u16 recfile_read(NOR_REC_FILE *pfile, u8 *buff, u16 btr)
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{
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u32 file_len, addr;
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u16 read_len = btr;
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u16 len, len0;
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u32 max_addr, min_addr;
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max_addr = ((u32)(pfile->pfs->last_sector + 1) << pfile->pfs->sector_size) ;
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min_addr = ((u32)(pfile->pfs->first_sector) << pfile->pfs->sector_size) ;
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file_len = (u32)pfile->len;
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if ((u32)(btr + pfile->rw_p) >= file_len) {
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if (pfile->rw_p >= file_len) {
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return 0;
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}
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read_len = file_len - pfile->rw_p;
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}
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addr = pfile->rw_p + ((u32)pfile->index.sector << pfile->pfs->sector_size);
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len0 = read_len;
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/* y_printf(">>>[test]:r_addr = %d,max_addr =%d, min_addr=%d, pfile->rw_p =%d\n", addr, max_addr, min_addr, pfile->rw_p); */
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//y_printf(">>>[test]:r_len0 = %d,btr = %d, file_len = %d\n",len0, btr, file_len);
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while (len0) {
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if (addr >= max_addr) {
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addr = addr - max_addr + min_addr;
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}
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if ((addr + len0) > max_addr) {
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len = max_addr - addr;
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} else {
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len = len0;
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}
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/* y_printf(">>>[test]2222r_addr = %d,max_addr =%d, min_addr=%d, pfile->rw_p =%d\n",addr, max_addr, min_addr, pfile->rw_p); */
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recpfs_read(pfile->pfs, addr, buff, len);
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pfile->rw_p += len;
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len0 -= len;
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buff += len;
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addr += len;
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}
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return read_len;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 录音文件写函数
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@param pfile:文件句柄
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@param buff:数据BUFF
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@param btr:需要写入的数据长度，字节单位
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@return u16:写入的长度
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@author liujie
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@note u16 recf_write(NOR_REC_FILE *pfile,u8 *buff,u16 btw)
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*/
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/*----------------------------------------------------------------------------*/
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u16 recfile_write(NOR_REC_FILE *pfile, u8 *buff, u16 btw)
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{
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u32 addr;
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u32 max_addr, min_addr;
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u16 sector;
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u16 len0 = 0;
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u16 len = 0;;
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max_addr = ((u32)(pfile->pfs->last_sector + 1) << pfile->pfs->sector_size) ;
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min_addr = ((u32)(pfile->pfs->first_sector) << pfile->pfs->sector_size) ;
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addr = pfile->rw_p + ((u32)pfile->index.sector << pfile->pfs->sector_size);
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/* y_printf(">>>[test]:addr = %d,max_addr =%d, min_addr=%d, pfile->rw_p =%d\n",addr, max_addr, min_addr, pfile->rw_p); */
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/*printf(">>>[test]:addr =0x%x,max_addr =0x%x, min_addr=0x%x,offset_addr=0x%x, pfile->rw_p =0x%x\n",addr, max_addr, min_addr, offset_addr,pfile->rw_p);*/
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while (1) {
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if ((pfile->rw_p + btw) > pfile->len) {
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//获取更多的空间；
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sector = (pfile->len + (1L << pfile->pfs->sector_size) - 1) >> pfile->pfs->sector_size;
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sector += pfile->index.sector;
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if (sector > pfile->pfs->last_sector) {
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sector = sector - pfile->pfs->last_sector + pfile->pfs->first_sector - 1;
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}
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if (pfile->index.sector != sector) {
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/* r_printf(">>>[test]:goto erase\n"); */
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recpfs_erase_sector(pfile->pfs, sector, sector);
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/* r_printf(">>>[test]:exit erase\n"); */
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pfile->len = pfile->len + (1L << pfile->pfs->sector_size);
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} else {
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/* y_printf(">>>[test]:not erase, sector = %d\n", sector); */
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break;
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}
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} else {
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break;
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}
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}
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if ((pfile->rw_p + btw) > pfile->len) {
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len = pfile->len - pfile->rw_p ;
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y_printf(">>>[test]:len = %d, pfile->len = %d,pfile->rw_p =%d \n", len, pfile->len, pfile->rw_p);
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} else {
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len = btw;
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}
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len0 = len;
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while (len0) {
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if (addr >= max_addr) {
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addr = addr - max_addr + min_addr;
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/* r_printf(">>>[test]:write the end, goto first addr write\n"); */
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}
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if ((addr + len0) > max_addr) {
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btw = max_addr - addr;
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} else {
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btw = len0;
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}
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/* y_printf(">>>[test]:btw = %d\n", btw); */
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recpfs_write_align(pfile->pfs, addr, buff, btw);
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/* y_printf(">>>[test]:len0 = %d\n",len0); */
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addr += btw;
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buff += btw;
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len0 -= btw;
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}
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pfile->rw_p += len;
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if (pfile->rw_p > pfile->w_len) {
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pfile->w_len = pfile->rw_p;
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}
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return len;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 清除索引
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@param pfs:文件系统句柄
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@return void
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@author liujie
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@note void recfile_idx_clear(NOR_RECFILESYSTEM *pfs)
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*/
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/*----------------------------------------------------------------------------*/
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void recfile_idx_clear(NOR_RECFILESYSTEM *pfs)
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{
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RECFILEHEAD file_h;
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u32 addr;
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u16 curr_sector;
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curr_sector = pfs->first_sector;
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memset(&file_h, 0, sizeof(RECFILEHEAD));
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while (curr_sector <= pfs->last_sector) {
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addr = (u32)curr_sector << pfs->sector_size;
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recpfs_write_align(pfs, addr, (u8 *)(&file_h), sizeof(RECFILEHEAD));
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curr_sector++;
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}
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}
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/*----------------------------------------------------------------------------*/
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/**@brief delete a rec_file
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@param pfs:文件系统句柄
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@return void
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@author phew
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*/
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/*----------------------------------------------------------------------------*/
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void recpfs_clear(NOR_REC_FILE *pfile)
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{
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RECFILEHEAD file_h;
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u32 addr;
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u16 curr_sector;
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curr_sector = pfile->index.sector;
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memset(&file_h, 0, sizeof(RECFILEHEAD));
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addr = (u32)curr_sector << pfile->pfs->sector_size;
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recpfs_write_align(pfile->pfs, addr, (u8 *)(&file_h), sizeof(RECFILEHEAD));
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 扫描文件系统
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@param pfs:文件系统句柄
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@return u32：总文件数
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@author liujie
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@note u32 recfs_scan(NOR_RECFILESYSTEM *pfs)
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*/
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/*----------------------------------------------------------------------------*/
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/*扫描出最少的文件*/
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u32 rec_pfs_scan(NOR_RECFILESYSTEM *pfs)
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{
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RECFILEHEAD file_h __attribute__((aligned(4)));
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NOR_RECF_INDEX_INFO max_index;
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u32 addr;
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u32 total_len;
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u16 crc;
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u16 file_cnt = 0;
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u16 curr_sector = pfs->first_sector;
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pfs->total_file = 0;
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max_index.index = 0;
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max_index.sector = pfs->first_sector;
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total_len = (u32)((u32)pfs->last_sector + 1 - (u32)pfs->first_sector) << pfs->sector_size;
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while (1) {
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addr = (u32)curr_sector << pfs->sector_size;
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/* r_printf(">>>[test]:addr=0x%x\n", addr); */
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recpfs_read(pfs, addr, (u8 *)(&file_h), sizeof(RECFILEHEAD));
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crc = CRC16(&file_h.data_crc, sizeof(RECFILEHEAD) - 2);
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/* y_printf(">>>[test]:crc = 0x%x, file_h.len = %d, file_h.index = %d\n", crc, file_h.len, file_h.index); */
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if ((0 != crc) && (crc == file_h.head_crc) && (file_h.len <= total_len)) {
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if (file_h.index >= max_index.index) {
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max_index.index = file_h.index;
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max_index.sector = curr_sector;
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}
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r_printf(">>>[test]:addr=%d\n", addr);
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file_cnt++;
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if (0 != file_h.len) {
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curr_sector += file_h.len >> pfs->sector_size;
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if (file_h.len % (1L << pfs->sector_size)) {
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curr_sector++;
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}
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} else {
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curr_sector++;
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}
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} else {
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curr_sector++;
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}
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if (curr_sector > pfs->last_sector) {
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//curr_sector = pfs->first_sector;
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break;
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}
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}
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if (max_index.index < 0) {
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//清空整个MEM()
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y_printf(">>>[test]:goto clear index.sector\n");
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recfile_idx_clear(pfs);
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pfs->total_file = 0;
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pfs->index.index = 0;
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pfs->index.sector = pfs->first_sector;
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} else {
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pfs->index.index = max_index.index;
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pfs->index.sector = max_index.sector;
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/* y_printf(">>>[test]:recfs_scan pfs->index.sector = %d, pfs->index.index = %d\n", pfs->index.sector, pfs->index.index); */
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pfs->total_file = file_cnt;
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/* y_printf(">>>[test]:recfs_scan file_cnt = %d\n", file_cnt); */
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}
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return file_cnt;
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 检查指定扇区是否存爱文件
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@param pfs:文件系统的句柄
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@param pfile_h:文件头指针
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@param sector:需要分析的扇区
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@return u16:下一个有效扇区
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@author liujie
|
||
@note u16 check_head(NOR_RECFILESYSTEM *pfs,RECFILEHEAD *pfile_h,u16 sector)
|
||
*/
|
||
/*----------------------------------------------------------------------------*/
|
||
u16 nor_check_head(NOR_RECFILESYSTEM *pfs, RECFILEHEAD *pfile_h, u16 sector)
|
||
{
|
||
u32 addr;
|
||
u32 total_len;
|
||
addr = sector;
|
||
addr = addr << pfs->sector_size;
|
||
|
||
total_len = (u32)((u32)pfs->last_sector + 1 - (u32)pfs->first_sector) << pfs->sector_size;
|
||
y_printf(">>>[test]: check head addr = %d\n", addr);
|
||
recpfs_read(pfs, addr, (u8 *)pfile_h, sizeof(RECFILEHEAD));
|
||
if ((CRC16(&pfile_h->data_crc, sizeof(RECFILEHEAD) - 2) == pfile_h->head_crc)
|
||
&& (pfile_h->len <= total_len)
|
||
) {
|
||
r_printf(">>>[test]:AAAAAAAAAAA\n");
|
||
sector = sector + (pfile_h->len >> pfs->sector_size);
|
||
r_printf(">>>[test]:sector = %d\n", sector);
|
||
if (pfile_h->len % (1L << pfs->sector_size)) {
|
||
r_printf(">>>[test]:BBBBBBBBBBB\n");
|
||
sector++;
|
||
} else {
|
||
}
|
||
} else {
|
||
}
|
||
return sector;
|
||
}
|
||
|
||
|
||
|
||
/*----------------------------------------------------------------------------*/
|
||
/**@brief 建立一个文件
|
||
@param pfs:文件系统的句柄
|
||
@param pfile:文件的句柄
|
||
@return u32:建立文件索引
|
||
@author liujie
|
||
@note u32 create_nor_recfile(NOR_RECFILESYSTEM *pfs,NOR_REC_FILE *pfile)
|
||
*/
|
||
/*----------------------------------------------------------------------------*/
|
||
u32 create_nor_recfile(NOR_RECFILESYSTEM *pfs, NOR_REC_FILE *pfile)
|
||
{
|
||
RECFILEHEAD file_h;
|
||
u16 sector, sec0;
|
||
u16 sec_len;
|
||
|
||
memset((u8 *)pfile, 0, sizeof(NOR_REC_FILE));
|
||
pfile->pfs = pfs;
|
||
sector = pfs->index.sector;
|
||
/* y_printf(">>>[test]:create pfs->index.sector = %d\n", pfs->index.sector); */
|
||
sec0 = nor_check_head(pfs, &file_h, sector);
|
||
if (sector != sec0) {
|
||
if (sec0 > pfs->last_sector) {
|
||
sec0 = sec0 - pfs->last_sector + pfs->first_sector - 1;
|
||
}
|
||
sector = sec0;
|
||
}
|
||
pfile->index.index = pfs->index.index + 1;
|
||
pfile->index.sector = sec0;
|
||
sec_len = recpfs_erase_sector(pfs, sector, sec0);
|
||
/* y_printf(">>>[test]:sec_len = %d\n",sec_len); */
|
||
pfile->len = (u32)sec_len << pfs->sector_size;
|
||
pfile->w_len = sizeof(RECFILEHEAD);
|
||
pfile->rw_p = sizeof(RECFILEHEAD);
|
||
pfile->addr = pfile->rw_p + (pfile->index.sector << pfile->pfs->sector_size) ;
|
||
/* y_printf(">>>[test]:rw_p = %d\n", pfile->rw_p); */
|
||
return pfile->index.index;
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------------*/
|
||
/**@brief 关闭一个文件
|
||
@param pfile:文件的句柄
|
||
@return u32:建立文件索引
|
||
@author liujie
|
||
@note u32 close_nor_recfile(NOR_REC_FILE *pfile)
|
||
*/
|
||
/*----------------------------------------------------------------------------*/
|
||
u32 close_nor_recfile(NOR_REC_FILE *pfile)
|
||
{
|
||
RECFILEHEAD file_h;
|
||
|
||
memset(&file_h, 0xff, sizeof(RECFILEHEAD));
|
||
pfile->w_len = pfile->rw_p;
|
||
pfile->len = pfile->w_len;
|
||
pfile->rw_p = 0;//sizeof(RECFILEHEAD);
|
||
file_h.len = pfile->w_len;
|
||
file_h.index = pfile->index.index;
|
||
file_h.addr = pfile->addr;
|
||
memcpy(file_h.name, pfile->priv_data, NORFS_DATA_LEN);
|
||
r_printf(">>>[test]:file_h.priv_data = %s, len = %d\n", file_h.name, NORFS_DATA_LEN);
|
||
|
||
file_h.head_crc = CRC16(&file_h.data_crc, sizeof(RECFILEHEAD) - 2);
|
||
r_printf(">>>[test]:pfile->index.sector = %d\n", pfile->index.sector);
|
||
|
||
recfile_write(pfile, (u8 *)&file_h, sizeof(RECFILEHEAD));
|
||
pfile->pfs->index.index = pfile->index.index;
|
||
pfile->pfs->index.sector = pfile->index.sector;
|
||
|
||
/* r_printf(">>>[test]:file_h.len = %d\n", file_h.len); */
|
||
return file_h.len;
|
||
}
|
||
|
||
void recfile_save_sr(NOR_REC_FILE *pfile, u16 sr)
|
||
{
|
||
if (pfile) {
|
||
pfile->sr = sr;
|
||
}
|
||
}
|
||
|
||
/*----------------------------------------------------------------------------*/
|
||
/**@brief 按照索引号，搜索一个文件
|
||
@param index:索引号
|
||
@param pfile:文件的句柄
|
||
@return u32:找到文件的索引
|
||
@author liujie
|
||
@note u32 recfile_index_scan(u32 index,NOR_REC_FILE *pfile)
|
||
*/
|
||
/*----------------------------------------------------------------------------*/
|
||
u32 recfile_index_scan(u32 index, NOR_REC_FILE *pfile)
|
||
{
|
||
RECFILEHEAD file_h;
|
||
NOR_RECFILESYSTEM *pfs;
|
||
u32 addr;
|
||
u32 total_len;
|
||
u16 curr_sector, crc;
|
||
|
||
pfs = pfile->pfs;
|
||
curr_sector = pfs->index.sector;
|
||
total_len = (u32)((u32)pfs->last_sector + 1 - (u32)pfs->first_sector) << pfs->sector_size;
|
||
/* r_printf(">>>[test]:pfile->pfs->index.sector = %d, total_len = %d\n", pfile->pfs->index.sector, total_len); */
|
||
while (1) {
|
||
addr = (u32)curr_sector << pfs->sector_size;
|
||
/* r_printf(">>>[test]:offset_addr = 0x%x, addr = 0x%x\n", offset_addr, addr); */
|
||
/* } */
|
||
recpfs_read(pfs, addr, (u8 *)(&file_h), sizeof(RECFILEHEAD));
|
||
crc = CRC16(&file_h.data_crc, sizeof(RECFILEHEAD) - 2);
|
||
/* y_printf(">>>[test]:crc = 0x%x, file_h.len = %d, file_h.index = %d\n", crc, file_h.len, file_h.index); */
|
||
if ((0 != crc) && (crc == file_h.head_crc) && (file_h.len <= total_len)) {
|
||
if (file_h.index == index) {
|
||
printf(">>>[test]:go in AAAAAA\n");
|
||
pfile->index.index = index;
|
||
pfile->index.sector = curr_sector;
|
||
pfile->len = file_h.len;
|
||
pfile->w_len = file_h.len;
|
||
pfile->rw_p = sizeof(RECFILEHEAD);
|
||
pfile->addr = file_h.addr;
|
||
memcpy(pfile->priv_data, file_h.name, NORFS_DATA_LEN);
|
||
return index;
|
||
} else {
|
||
if (0 == file_h.len) {
|
||
curr_sector++;
|
||
}
|
||
curr_sector = curr_sector + (file_h.len >> pfs->sector_size);
|
||
if (file_h.len % (1L << pfs->sector_size)) {
|
||
curr_sector++;
|
||
}
|
||
}
|
||
} else {
|
||
curr_sector++;
|
||
}
|
||
|
||
if (curr_sector > pfs->last_sector) {
|
||
curr_sector = pfs->first_sector;
|
||
}
|
||
/* r_printf(">>>[test]:pfile->index.sector = %d, curr_sector = %d\n", pfile->index.sector, curr_sector); */
|
||
if (pfs->index.sector == curr_sector) {
|
||
break;
|
||
}
|
||
}
|
||
return index - 1;
|
||
}
|
||
|
||
/*----------------------------------------------------------------------------*/
|
||
/**@brief 按照索引号打开一个文件
|
||
@param index:索引号
|
||
@param pfs:文件系统的句柄
|
||
@param pfile:文件的句柄
|
||
@return u32:找到文件的索引
|
||
@author liujie
|
||
@note u32 open_nor_recfile(u32 index,NOR_RECFILESYSTEM *pfs,NOR_REC_FILE *pfile)
|
||
*/
|
||
/*----------------------------------------------------------------------------*/
|
||
u32 open_nor_recfile(u32 index, NOR_RECFILESYSTEM *pfs, NOR_REC_FILE *pfile)
|
||
{
|
||
memset((u8 *)pfile, 0, sizeof(NOR_REC_FILE));
|
||
pfile->pfs = pfs;
|
||
pfile->rw_p = sizeof(RECFILEHEAD);
|
||
return recfile_index_scan(index, pfile);
|
||
}
|
||
|
||
|
||
/*----------------------------------------------------------------------------*/
|
||
/**@brief 初始化文件系统信息
|
||
@param pfs:文件系统的句柄
|
||
@param sector_start:起始扇区
|
||
@param sector_end:结束扇区
|
||
@param sector_size:扇区大小（1L<<sector_size）
|
||
@return u32:找到文件的索引
|
||
@author liujie
|
||
@note void init_nor_fs(NOR_RECFILESYSTEM *pfs,u16 sector_start,u16 sector_end,u8 sector_size)
|
||
*/
|
||
/*----------------------------------------------------------------------------*/
|
||
void nor_pfs_init(NOR_RECFILESYSTEM *pfs, u16 sector_start, u16 sector_end, u8 sector_size)
|
||
{
|
||
pfs->first_sector = sector_start;
|
||
pfs->last_sector = sector_end;
|
||
pfs->sector_size = sector_size;
|
||
}
|
||
|