I am testing SD CARD function on AM3359 ICE board.
I use MMC/SD Driver in Starterware 02.00.00.07 and Fatfs file system to copy a file in sd card.
The purpose is to make sure the read data and write data are correct so I will compare source file and destination(copy) file.
My questions are:
1. I find there is sometimes a byte data error in a fixed file location 0x0100C200.
The byte content should be D6 in Hex but it become F6 in the copy file.
2. Since it is in a fixed file location , I check the content in Buffer(memory) before writing to SD card and it is correct(D6).
3.I change the content in source file which is in location 0x0100C200 from D6 to C6 and make 10 copy files.
All of ten files are totally the same as source file.
Please help me find out the problem. Thank you.