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DMA Sequence to Read SD card
Hello,
Reading and writing SD card using DMA requires bus interface like SPI?
I want to read and write SD card using DMA without SPI is it possible?
I tried to read first sector of from SD card through DMA channel 0 but not succeed. I enabled channel 0 trying to...
Read and write from SD card using DMA Controller
Hello,
I have interfaced SD-CARD with ARM-LPC Raw read and write working well with FAT. Now I want introduce DMA for read and write to avoid CPU.
Please suggest how to read and write from SD card using DMA Controller.
Thanks
Files in SD card getting deleted after write single block
Hello All,
I am interfacing SD card on ARM: LPC3250, I am able to read write single sector.Now i am trying FAT16 with 2GB card using Chan's FatFs library.
I read 512 bytes from Doc1.txt and trying to overwrite 512 bytes of Doc2.txt...
Hello,
I am interfacing SD card on ARM: LPC3250, I am able to read write single sector.Now i am trying FAT16 with 2GB card.
PROBLEM: I googled, getting FAT library without application I/o (I mean without File operation File_open, File_read etc..) libraries. I tried few FAT16 library it is...
Problem solved: Yes i was confused with Hex editor.
as u said ISO Is right view of MBR(0x0000) and Bootsector(Relative address 0x00000087).
Thanks pjmelect & srizbf for ur time and kind replay.
@pjmelect
Yes you are right image file gives MBR and Boot sector properly attached snap below
MBR
BootSector @0x10e00(0x00000087*0x200)
But when the Drive opened directly.NO MBR, Boot sector at address 0x00000(1st block).
MBR
BootSector @0x10e00(0x00000087*0x200)
Code reading MBR...
Thanks for the replay pjmelect.
When i connect SD card by card reader it will detected as drive not disc. Is it possible to convert drive to ISO file? any software?
I tried HXD hex editor but same result(Drive not ISO file).
Sorry i am adding more detail here
I am interfacing SD card on ARM: LPC3250. The 2GB fat16 formatted sd card is initialized on reading Boot Sector (1st Block) CMD17 I am not getting valid boot sector information, instead I am getting below data in a 32 bit array every time
data[0] =...
Hello All,
I am interfacing SD card on ARM: LPC3250. The 2GB fat16 formatted sd card is initialized on reading Boot Sector (1st Block) CMD17 I am not getting valid boot sector information, instead I am getting below data in a 32 bit array every time
data[0] = 0x00000000
.....
data[110] =...
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