Writing to absolute sectors on SD Card
Sebastian Huber
sebastian.huber at embedded-brains.de
Wed Nov 19 10:30:43 UTC 2008
Chris Johns wrote:
> Robert S. Grimes wrote:
>> Is it possible to write to absolute sectors using the spi-sd-card driver?
>
> Yes but you are on your own with how this interacts with the cache. I wonder
> why the SD card is implemented this way. I would have thought the
> rtems_blkdev_generic_* calls such as rtems_blkdev_generic_write was the way to
> do this. This removes the need for sd_card_driver_read and
> sd_card_driver_write. Maybe Thomas could help here.
I used the sd_card_driver_* stuff for testing and debugging. Maybe it
is better to remove it and provide only the LibBlock interface. Can I
just add these rtems_blkdev_generic_* functions to the sd_card_disk_ops
and only provide a custom initialization function?
[...]
--
Sebastian Huber, Embedded Brains GmbH
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