Looking for a driver for Compact Flash access

As the CF uses a standard IDE interface, the IDE driver for the hardware in question should work.

-Michael

Is this your own design or did you purchase this board from somewhere ??

What Operating system are you using ?

A little more info about the design of this board would be nice.

donald

Hi.

1. This is my our own design. Do you think connecting the CF in other mode (IO/IDE) will make things consederably easier? Even so, is it doable also in memory-mode connection?

1. Sorry - I should've mentioned it. It is Linux (2.6.14).

The problems I have using an IDE driver are:

1. Looks like the IDE driver relys on interrupt-driven IO, and the CF does not issue any interrupts when connected in memory mode.
2. I'm not sure which one to choose: ide-cs (but then, I don't have IDE-controller), ide-ata? I guess some adaptation will be necessary in any case, right now I don't know what it is and what is the closest driver to what I need.

Thanks, Michael.

Ah, I see that you have a non-standard hardware with no existing IDE driver.

I would try to modify the IDE driver (from PPC or ARM if you use a memory mapped hardware).

Of course, if your hardware does not use interrupts, the performance of the driver will not be very good, as you will need to use polling instead. But modifying the driver by using a Kernel timer, polling the original interrupting pin of the IDE interface, instead of an interrupt should not introduce a too massive change.

-Michael

Yes, looks like this is the general direction... I'm still trying to find my way there. What do you mean by an IDE driver from PPC?

register the specific read/write etc. functions with it. Can you please help me with narrowing-down the search for the potential modules to change (i.e. some "vanila" ide module I can use as a basis), or some good reference on how to add an IDE device?

Thanks, Michael

regards

Wolfgang

Thanks