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BitsyX Compact Flash Interface

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sdsteam

60 Posts

Posted - 26 Jun 2003 : 01:52:05

We are working with a Rev 2 bitsyX board with 64 MB DRAM. We would like to know what is the IRQ associated with the compact flash interface. We are connecting an external device that generates an interrupt on the parallel interface and would like to write an ISR for that particular IRQ.

rwhaley

628 Posts

Posted - 26 Jun 2003 : 10:25:32

Note: sdsteam is a Linux user. The following comments apply only to Linux.

There are several IRQs associated with the CF socket. You can find these in the kernel source in the file inclulde/asm-arm/arch-pxa/irqs.h. For the BitsyX these IRQs are named S1_READY_NINT, S1_CD_VALID, and S1_BVD1_STSCHG. The numeric value of these interrupts may change with new releases, so it's best to use the symbolic name in your driver.

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