309 lines
6.3 KiB
C
309 lines
6.3 KiB
C
#include "fattester.h"
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#include "mmc_sd.h"
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#include "usmart.h"
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#include "usart.h"
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#include "exfuns.h"
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#include "malloc.h"
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#include "ff.h"
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#include "string.h"
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//////////////////////////////////////////////////////////////////////////////////
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//本程序只供学习使用，未经作者许可，不得用于其它任何用途
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//ALIENTEK战舰STM32开发板
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//FATFS 测试代码
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//正点原子@ALIENTEK
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//技术论坛:www.openedv.com
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//修改日期:2012/9/18
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//版本：V1.0
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//版权所有，盗版必究。
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//Copyright(C) 广州市星翼电子科技有限公司 2009-2019
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//All rights reserved
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//////////////////////////////////////////////////////////////////////////////////
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//为磁盘注册工作区
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//drv:盘符
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//返回值:执行结果
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u8 mf_mount(u8 drv)
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{
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return f_mount(drv,fs[drv]);
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}
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//打开路径下的文件
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//path:路径+文件名
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//mode:打开模式
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//返回值:执行结果
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u8 mf_open(u8*path,u8 mode)
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{
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u8 res;
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res=f_open(file,(const TCHAR*)path,mode);//打开文件夹
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return res;
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}
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//关闭文件
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//返回值:执行结果
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u8 mf_close(void)
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{
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f_close(file);
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return 0;
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}
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//读出数据
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//len:读出的长度
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//返回值:执行结果
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u8 mf_read(u16 len)
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{
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u16 i,t;
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u8 res=0;
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u16 tlen=0;
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printf("\r\nRead file data is:\r\n");
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for(i=0;i<len/512;i++)
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{
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res=f_read(file,fatbuf,512,&br);
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if(res)
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{
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printf("Read Error:%d\r\n",res);
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break;
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}else
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{
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tlen+=br;
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for(t=0;t<br;t++)printf("%c",fatbuf[t]);
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}
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}
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if(len%512)
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{
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res=f_read(file,fatbuf,len%512,&br);
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if(res) //读数据出错了
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{
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printf("\r\nRead Error:%d\r\n",res);
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}else
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{
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tlen+=br;
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for(t=0;t<br;t++)printf("%c",fatbuf[t]);
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}
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}
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if(tlen)printf("\r\nReaded data len:%d\r\n",tlen);//读到的数据长度
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printf("Read data over\r\n");
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return res;
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}
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//写入数据
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//dat:数据缓存区
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//len:写入长度
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//返回值:执行结果
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u8 mf_write(u8*dat,u16 len)
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{
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u8 res;
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printf("\r\nBegin Write file...\r\n");
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printf("Write data len:%d\r\n",len);
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res=f_write(file,dat,len,&bw);
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if(res)
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{
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printf("Write Error:%d\r\n",res);
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}else printf("Writed data len:%d\r\n",bw);
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printf("Write data over.\r\n");
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return res;
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}
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//打开文件夹
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//path:路径
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//返回值:执行结果
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u8 mf_opendir(u8* path)
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{
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return f_opendir(&dir,(const TCHAR*)path);
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}
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//打读取文件夹
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//返回值:执行结果
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u8 mf_readdir(void)
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{
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u8 res;
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char *fn;
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#if _USE_LFN
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fileinfo.lfsize = _MAX_LFN * 2 + 1;
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fileinfo.lfname = mymalloc(SRAMIN,fileinfo.lfsize);
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#endif
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res=f_readdir(&dir,&fileinfo);//读取一个文件的信息
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if(res!=FR_OK||fileinfo.fname[0]==0)
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{
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myfree(SRAMIN,fileinfo.lfname);
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return res;//读完了.
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}
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#if _USE_LFN
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fn=*fileinfo.lfname ? fileinfo.lfname : fileinfo.fname;
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#else
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fn=fileinfo.fname;;
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#endif
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printf("\r\n DIR info:\r\n");
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printf("dir.id:%d\r\n",dir.id);
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printf("dir.index:%d\r\n",dir.index);
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printf("dir.sclust:%d\r\n",dir.sclust);
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printf("dir.clust:%d\r\n",dir.clust);
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printf("dir.sect:%d\r\n",dir.sect);
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printf("\r\n");
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printf("File Name is:%s\r\n",fn);
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printf("File Size is:%d\r\n",fileinfo.fsize);
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printf("File data is:%d\r\n",fileinfo.fdate);
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printf("File time is:%d\r\n",fileinfo.ftime);
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printf("File Attr is:%d\r\n",fileinfo.fattrib);
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printf("\r\n");
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myfree(SRAMIN,fileinfo.lfname);
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return 0;
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}
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//遍历文件
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//path:路径
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//返回值:执行结果
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u8 mf_scan_files(u8 * path)
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{
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FRESULT res;
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char *fn; /* This function is assuming non-Unicode cfg. */
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#if _USE_LFN
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fileinfo.lfsize = _MAX_LFN * 2 + 1;
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fileinfo.lfname = mymalloc(SRAMIN,fileinfo.lfsize);
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#endif
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res = f_opendir(&dir,(const TCHAR*)path); //打开一个目录
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if (res == FR_OK)
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{
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printf("\r\n");
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while(1)
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{
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res = f_readdir(&dir, &fileinfo); //读取目录下的一个文件
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if (res != FR_OK || fileinfo.fname[0] == 0) break; //错误了/到末尾了,退出
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//if (fileinfo.fname[0] == '.') continue; //忽略上级目录
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#if _USE_LFN
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fn = *fileinfo.lfname ? fileinfo.lfname : fileinfo.fname;
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#else
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fn = fileinfo.fname;
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#endif /* It is a file. */
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printf("%s/", path);//打印路径
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printf("%s\r\n", fn);//打印文件名
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}
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}
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myfree(SRAMIN,fileinfo.lfname);
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return res;
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}
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//显示剩余容量
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//drv:盘符
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//返回值:剩余容量(字节)
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u32 mf_showfree(u8 *drv)
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{
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FATFS *fs1;
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u8 res;
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DWORD fre_clust=0, fre_sect=0, tot_sect=0;
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//得到磁盘信息及空闲簇数量
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res = f_getfree((const TCHAR*)drv, &fre_clust, &fs1);
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if(res==0)
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{
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tot_sect = (fs1->n_fatent - 2) * fs1->csize;//得到总扇区数
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fre_sect = fre_clust * fs1->csize; //得到空闲扇区数
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#if _MAX_SS!=512
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tot_sect*=fs1->ssize/512;
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fre_sect*=fs1->ssize/512;
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#endif
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if(tot_sect<20480)//总容量小于10M
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{
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/* Print free space in unit of KB (assuming 512 bytes/sector) */
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printf("\r\n磁盘总容量:%d KB\r\n"
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"可用空间:%d KB\r\n",
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tot_sect>>1,fre_sect>>1);
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}else
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{
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/* Print free space in unit of KB (assuming 512 bytes/sector) */
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printf("\r\n磁盘总容量:%d MB\r\n"
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"可用空间:%d MB\r\n",
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tot_sect>>11,fre_sect>>11);
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}
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}
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return fre_sect;
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}
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//文件读写指针偏移
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//offset:相对首地址的偏移量
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//返回值:执行结果.
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u8 mf_lseek(u32 offset)
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{
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return f_lseek(file,offset);
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}
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//读取文件当前读写指针的位置.
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//返回值:位置
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u32 mf_tell(void)
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{
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return f_tell(file);
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}
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//读取文件大小
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//返回值:文件大小
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u32 mf_size(void)
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{
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return f_size(file);
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}
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//创建目录
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//pname:目录路径+名字
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//返回值:执行结果
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u8 mf_mkdir(u8*pname)
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{
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return f_mkdir((const TCHAR *)pname);
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}
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//格式化
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//drv:盘符
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//mode:模式
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//au:簇大小
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//返回值:执行结果
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u8 mf_fmkfs(u8 drv,u8 mode,u16 au)
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{
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return f_mkfs(drv,mode,au);//格式化,drv:盘符;mode:模式;au:簇大小
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}
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//删除文件/目录
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//pname:文件/目录路径+名字
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//返回值:执行结果
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u8 mf_unlink(u8 *pname)
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{
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return f_unlink((const TCHAR *)pname);
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}
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//修改文件/目录名字(如果目录不同,还可以移动文件哦!)
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//oldname:之前的名字
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//newname:新名字
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//返回值:执行结果
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u8 mf_rename(u8 *oldname,u8* newname)
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{
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return f_rename((const TCHAR *)oldname,(const TCHAR *)newname);
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}
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//从文件里面读取一段字符串
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//size:要读取的长度
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void mf_gets(u16 size)
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{
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TCHAR* rbuf;
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rbuf=f_gets((TCHAR*)fatbuf,size,file);
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if(*rbuf==0)return ;//没有数据读到
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else
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{
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printf("\r\nThe String Readed Is:%s\r\n",rbuf);
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}
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}
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//需要_USE_STRFUNC>=1
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//写一个字符到文件
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//c:要写入的字符
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//返回值:执行结果
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u8 mf_putc(u8 c)
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{
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return f_putc((TCHAR)c,file);
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}
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//写字符串到文件
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//c:要写入的字符串
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//返回值:写入的字符串长度
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u8 mf_puts(u8*c)
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{
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return f_puts((TCHAR*)c,file);
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}
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