--- In "Daniel Souza" <> wrote:
>
> Hi,
>
> In my TS-7300 (kernel 2.4) application the user must insert a SD-
Card
> to the board, so my application can read and write some data from
the
> SD-Card. The system must operate with the SD-Card, otherwise the
user
> should be warned about the SD-Card. So what I need to do is
> auto-detect the SD-Card, in a way that my C/C++ application will be
> able to know if the SD-Card is or is not in the board.
>
> I was thinking about something like the hotplug system in Ubuntu
that
> recognize when an USB device is placed or removed. Does anyone know
> how can I do it?
>
> Thanks,
> Daniel
>
Hi Daniel,
I don't remove the SD cards under normal operation, but I do check
for the presence via a file stored in the root directory of the card.
I mount the card and if I succeed the program looks for the file...
I also use this to check if a USB thumbdrive has been inserted.
PJE
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