Please suggest me about coppying micro SD card thru microcontroller based stand alone hardware. Read/write timing/protocols will also be very usefull.
Thanks in advance for your valuable suggestions.
The SD card detail is fully defined in a document published by Sandisk.
If you're a bit lazy (that's also my case), you can also start with this document
which contains source code to initialize MMC and SD cards and also a working
file system (FAT 16). Slow but working.
Now if you want to do an exact copy of one SD into the other, you don't need
a file system. The advantage would be that you read sequentially in one card
and copy the same way in the other, which is a lot faster than dealing with
the file system. I don't know what would happen if the 2 cards don't have the
same size, but you can verify the sizes by reading the MBR.
Dora.
vicky.pace said:
Dear All,
Please suggest me about coppying micro SD card thru microcontroller based stand alone hardware. Read/write timing/protocols will also be very usefull.
Thanks in advance for your valuable suggestions.
I have recently completed a succesfull project with LPC2148, philips ARM.
This microcontroller gives you a great platform to have a Mass Storage Micro SD over USB and also you can drive the uSD inside the microcontroller with FAT16 driver.
Its really nice to use it. But one thing to mention is that FAT16 is a very slow protocol and one must be quite familiar with it to make the best use of this project.
hi
i need help for read and write in sd card using lpc2148
i don't know what is sector,block ,FAT?
give me guidance about read and write in sd card using lpc2148.
so i can start programming
thanks in advance .
I don't understand what your problem is. Just follow the link I put previously, Also you can find enough information about FAT itself from google (Wikipedia)