MQX Software SolutionsのトピックRe: about the MFS LFN problem

about the MFS LFN problem

fukefeng — Tue, 04 Jun 2013 12:38:11 GMT

I use the MFS on the usb storage device,if you just use the short file name,you can find the file names soon,and if you want find the long file names,it takes too long times.eg.there are about 100 or 200 files in the current. maybe i use the api in wrong way

Re: about the MFS LFN problem

fukefeng — Tue, 04 Jun 2013 12:46:34 GMT

I use the api in this way:

error_code = ioctl(HS_USBFS_HANDLE, IO_IOCTL_FIND_FIRST_FILE, (uint_32_ptr) &search);
while (error_code == MFS_NO_ERROR) {
     lfn_struct.PATHNAME = search_data.NAME;
     error_code = ioctl(HS_USBFS_HANDLE, IO_IOCTL_GET_LFN, (uint_32_ptr) &lfn_struct);
     if((search_data.ATTRIBUTE & MFS_ATTR_DIR_NAME) == MFS_ATTR_DIR_NAME)     continue;
     if(0 != strcmp(".\0",  (char *)&search_data.NAME))
     if(error_code == MFS_NO_ERROR)
          strcpy(ListPtr2[ListPtrNum2], lfn);
     else
          strcpy(ListPtr2[ListPtrNum2], search_data.NAME);
     error_code = ioctl(HS_USBFS_HANDLE, IO_IOCTL_FIND_NEXT_FILE, (uint_32_ptr) &search_data);
}

thanks for answer me!

Re: about the MFS LFN problem

fukefeng — Tue, 04 Jun 2013 12:49:26 GMT

if((search_data.ATTRIBUTE & MFS_ATTR_DIR_NAME) == MFS_ATTR_DIR_NAME) {
     error_code = ioctl(HS_USBFS_HANDLE, IO_IOCTL_FIND_NEXT_FILE, (uint_32_ptr) &search_data); 
     continue;
}

Re: about the MFS LFN problem

fukefeng — Wed, 05 Jun 2013 13:25:28 GMT

K70 device, MQX4.0

Re: about the MFS LFN problem

zhiyangzhang — Tue, 02 Jul 2013 22:27:16 GMT

Maybe you can refer to this https://community.freescale.com/thread/309151. I just encountered the same problem and resolved it in the end. Some efficient method should be used to satisfy your demand. The difference is that I read from SD card which does not matter.

Re: about the MFS LFN problem

fukefeng — Mon, 15 Jul 2013 02:58:33 GMT

Thank you, I used the mathod you which you provided，now it work well.

Re: about the MFS LFN problem

zhiyangzhang — Mon, 15 Jul 2013 05:37:53 GMT

You are welcome. Best Regards!