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Discussion Groups | 68HC12 | HC12 and SD card
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
HC12 and SD card - adeshere - Apr 15 10:54:40 2008
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
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
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
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Re: HC12 and SD card - "smith.jeff28" - Apr 15 11:39:23 2008
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
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
What do plan to do with it?
Have gotten chan's code?
http://elm-chan.org/fsw/ff/00index_e.html
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Re: HC12 and SD card - adeshere - Apr 15 12:29:31 2008
--- In 6...@yahoogroups.com, "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
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
>
> 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
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
Re: HC12 and SD card - "smith.jeff28" - Apr 15 15:37:12 2008
--- In 6...@yahoogroups.com, "adeshere" wrote:
>
> --- In 6...@yahoogroups.com, "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.
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
>
> --- In 6...@yahoogroups.com, "smith.jeff28"
> >
> > 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.
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
RE: HC12 and SD card - Jean-Sebastien Bouchard - Apr 15 22:00:39 2008
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...@yahoogroups.com [mailto:6...@yahoogroups.com] On Behalf Of
adeshere
Sent: April 15, 2008 10:53 AM
To: 6...@yahoogroups.com
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
[Non-text portions of this message have been removed]
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
What command are you trying, Single block read or Multiple block read?
_____
From: 6...@yahoogroups.com [mailto:6...@yahoogroups.com] On Behalf Of
adeshere
Sent: April 15, 2008 10:53 AM
To: 6...@yahoogroups.com
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
[Non-text portions of this message have been removed]
------------------------------------
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )