shay1995
Newbie level 3
Good day,all.
I have try my best to solve this problem -- I am using FATFS13 on my custom STM32F469 board and I am using the Standard Peripheral library.
My situations is that I have connected 1MB of SRAM over the FMC bus, and an SD card over the SPI bus. I can mount on both hardware a FAT file system, FAT12 on the RAM and FAT32 on the SD. I tested SD cards up to 32GB so I can say that everything is working. It's possible to manage files on each volume. I named them RAMDISK and SDCARD in the ffconf.h. Basically I want two drives so that the user can copy graphic files in the SRAM for a faster access during the execution of programs.
My problem is that when I try to copy a file from one drive to the other, it's copied only the first chunk of data. A single cycle: - read from source - copy to dest - read from source -> Error 9 on the source ((9) The file/directory object is invalid).
I tried to dig into the code, and with the debugger I noticed that after the write to the destination file when it's time to read the second chunk of data, the 'obj->fs->fs_type' of the source file is set to 0. So the validation fails.I can't figure out why. Did you have a similar experience?
In order to avoid this error I need to have only one file opened a time, so I temporary solved the problem with this sequence: - open source - read chunck of data at offset - close source - open destination for append - save chunk of data - close destination !
Is there a particular way to perform a correct copy on different volumes?
Thanks in advance for any advice.
I have try my best to solve this problem -- I am using FATFS13 on my custom STM32F469 board and I am using the Standard Peripheral library.
My situations is that I have connected 1MB of SRAM over the FMC bus, and an SD card over the SPI bus. I can mount on both hardware a FAT file system, FAT12 on the RAM and FAT32 on the SD. I tested SD cards up to 32GB so I can say that everything is working. It's possible to manage files on each volume. I named them RAMDISK and SDCARD in the ffconf.h. Basically I want two drives so that the user can copy graphic files in the SRAM for a faster access during the execution of programs.
My problem is that when I try to copy a file from one drive to the other, it's copied only the first chunk of data. A single cycle: - read from source - copy to dest - read from source -> Error 9 on the source ((9) The file/directory object is invalid).
I tried to dig into the code, and with the debugger I noticed that after the write to the destination file when it's time to read the second chunk of data, the 'obj->fs->fs_type' of the source file is set to 0. So the validation fails.I can't figure out why. Did you have a similar experience?
In order to avoid this error I need to have only one file opened a time, so I temporary solved the problem with this sequence: - open source - read chunck of data at offset - close source - open destination for append - save chunk of data - close destination !
Is there a particular way to perform a correct copy on different volumes?
Thanks in advance for any advice.
