After the data block(512 bytes), do you get the CRC code then back to FF?

What command are you trying, Single block read or Multiple block read?

_____

From: 6... [mailto:6...] On Behalf Of
adeshere
Sent: April 15, 2008 10:53 AM
To: 6...
Subject: [68HC12] HC12 and SD card

Hi,

I am trying to talk to an SD card via SPI.

I can set up the card and read the CSD CSI registers.

BUT

When i read data from sector 0, i get the FF 00 to indicate that the
command was received correctly and then i eventually get the FE to
indicate the data is next.

The data i get back is just 00 00 00 00 00 ....

I've tried many cards

Any ideas ?

regards

Adrian


Start a New Thread

--- In 6..., "adeshere" wrote:
>
> --- In 6..., "smith.jeff28" wrote:
> >
> > What board are you using?
> >
> > What do plan to do with it?
> >
> > Have gotten chan's code?
> >
> > http://elm-chan.org/fsw/ff/00index_e.html
> > I am using it with a HCS12 processor.
I figured that, my question was specifically what brand name board.
>
> I am trying to access the sectors on the disk and will then implement a
> fat filing system
>

Get the code the link I gave you - it is already done.

Start a New Thread

--- In 6..., "smith.jeff28" wrote:
>
> What board are you using?
>
> What do plan to do with it?
>
> Have gotten chan's code?
>
> http://elm-chan.org/fsw/ff/00index_e.html
>

I am using it with a HCS12 processor.

I am trying to access the sectors on the disk and will then implement a
fat filing system
Start a New Thread

What board are you using?

What do plan to do with it?

Have gotten chan's code?

http://elm-chan.org/fsw/ff/00index_e.html

Start a New Thread

Hi,

I am trying to talk to an SD card via SPI.

I can set up the card and read the CSD CSI registers.

BUT

When i read data from sector 0, i get the FF 00 to indicate that the
command was received correctly and then i eventually get the FE to
indicate the data is next.

The data i get back is just 00 00 00 00 00 ....

I've tried many cards

Any ideas ?

regards

Adrian
Start a New Thread