Diff between File system and FAT file system

->I dont know whats the MCI_Send_CSD result?
What those values tell me?<-

In the below thread

http://www.keil.com/forum/docs/thread15098.asp

Andy (Andy Neil) provided a link to

the free "simplified" version of the SD Card interface specification

www.sdcard.org/.../sdcard

Search this documentation with "SEND_CSD", you will found:

The host issues SEND_CSD
(CMD9) to obtain the Card Specific Data (CSD register), e.g. block length, card storage capacity, etc.

->I dont know whats the MCI_Send_CSD result?
What those values tell me?<-

In the below thread

http://www.keil.com/forum/docs/thread15098.asp

Andy (Andy Neil) provided a link to

the free "simplified" version of the SD Card interface specification

www.sdcard.org/.../sdcard

Search this documentation with "SEND_CSD", you will found:

The host issues SEND_CSD
(CMD9) to obtain the Card Specific Data (CSD register), e.g. block length, card storage capacity, etc.

->So how can i remove this Write protected?<-

You need to find the related function/source code, study it, find out that, how it works, why it detects a "Write protected".

To better understand and control the SD-card on you embedded system, you need to learn a lot of things. There is no shortcut.

But in your situation, you might be able to treat something as a Black Box, and just use them until you encounter a related problem.

However, before you modify any lines of the source code, you must need to read the documentation.

You need to know that Andy and Per are very intelligent and experienced experts, everything they told you will need you to spend several days or weeks to study.

My level is much closer to you, and I suggest that, RLARM/RLFlash is good for NXP LPC23xx, you should use it, and treat everything you don't understand as a Black Box.

Hi to all:(

Still i am not able to get any success on anything even i tried so many options(changing in the code).

But the same results or not good results.

Still i am working on this because i believe i can get some help from you peoples.

All commends i tried but no results. I followed the flow of cmds. But same results.

from the elm-chan.org/.../dwrite.html

DRESULT disk_write ( BYTE Drive, /* Physical drive number */ const BYTE* Buffer, /* Pointer to the write data (may be non aligned) */ DWORD SectorNumber, /* Sector number to write */ BYTE SectorCount /* Number of sectors to write */
);

Here what is SectorNumber. What value i should give here?

From the page www.sdcard.org/.../Simplified_Physical_Layer_Spec.pdf
page no 89 gives me the details of received CSD values.
But with my result of CSD doesn't match with that table.

MCI_Send_CSD result: 002f0032 5f5983bd edb7ff9f 964000a8

From this value how can i get my Sector address where i can f_write and f_read?

The 0th bit of CSD is reserved int the doc that should be 1. but in my result Which one is that reserved bit? Please reply for my all questions. If you leave any then i ill be blank always.

simply here i am trying to write a sector with some value.

    FATFS fs;   // Work area (file system object) for logical drive
    BYTE buffer[4096];   // file copy buffer

        disk_initialize(0);

        i = disk_status(0);
        xprintf("\r\nDisk status is :%d", i);

        for(i = 0; i < 10; i++)
        buffer[i] = i;

        i = disk_write(0, (const BYTE *)&buffer, 0xD2, 56);
        xprintf("\r\nWrite status is :%d", i);

This one gives the result
MCI_INIT ok
no timeout on CMD8 -> SD-Card>=Version 2.0
ACMD41 success -> SD-Card SC or HC
SDSC detected
MCI_Send_CSD result: 002f0032 5f5983bd edb7ff9f 964000a8
setting 4bit width success

Disk status is :0

Write status is :0

Should i give BLOCK_LEN before i read or write the Block?

The Basic thing still i dont know is after formatting the card how to read the clusters and sectors with without file system?

Please really i tried a lot. I need some point out from you to make it....

From when i started i am trying so many things but no progress. hard luck...

Do you have a disk_write() function for LPC2388?

i = disk_write(0, (const BYTE *)&buffer, 0xD2, 56);

For example: 0xD2, what is that?

Oh Thanks for your reply.

DWORD SectorNumber, /* Sector number to write */

But 0xD2 i collected from the CSD return value. But the thing is i dont know what correct value i have to put over there to get a correct reply.

DRESULT disk_write ( BYTE Drive, /* Physical drive number */ const BYTE* Buffer, /* Pointer to the write data (may be non aligned) */ DWORD SectorNumber, /* Sector number to write */ BYTE SectorCount /* Number of sectors to write */
);

So physical drive no is 0.
Buffer is (const BYTE *)&buffer,
SectorNumber is 0xD2(i assumed wrongly),
SectorCount is 56(but i tried 0 and 1).
but 0 is not a valid value.

I know i am doing wrongly. But i am not able to figure it out..pls

Do you have a disk_write() function for LPC2388?

I guess i am not using this from RL ARM lib. This is available in diskio.c/.h for low level disk I/O module for lpc23xx/24xx.

But really i dont know the answer for your question..

No matter who provides/produces that products,
before we trust and rely on them, we better inspect them first.

=======================================

( long-unchanged fast food frying oil )

McDonald's apologizes over frying oil violation

" href= "http://www.chinacsr.com/en/2009/07/10/5646-carcinogens-found-on-mcdonalds-and-kfc-food-in-taipei-county/"> www.chinacsr.com/.../

MRT malfunction strands hundreds

www.taipeitimes.com/.../2003448368

The Taipei City MRT's Neihu and Muzha lines were suspended yesterday afternoon after a sudden power outage, forcing about 700 passengers to walk down the elevated rail lines to return to station platforms after trains stopped between stations.

The lines are scheduled to resume operating at 6am today. The suspension of services yesterday was the first serious system failure on the Neihu Line since it began operations last Saturday.

Mayor apologizes for Neihu/Muzha MRT line's suspension

www.etaiwannews.com/.../news_content.php

===========================================

Muzha line was built by MATRA, a French Company.

Neihu line is built by Bombardier, a Canadian Company.

News written in Chinese says that, the root cause might be related to System Integration Problem.

When we want to integrate a working-fine solution A and a working-fine solution B into a Big Project, there are alway a lot of problems, which need our effort to resolve.