Interrupts Between Linux and DSP without BIOS

Added by Okan Çalış about 7 years ago

Hi,

I've been working on a MityDsp-L138F with Linux Ångström.

I'm able to use the 128-KB shared RAM for inter-processor communication between the two cores, with ARM running Linux and DSP running baremetal. I want to send interrupts between cores to instantly notify one another that data is ready. Is this possible when the DSP is baremetal, in other words, without BIOS?

I realize that Starterware offers an interrupt example (which, I believe, requires both sides to be baremetal), and I've also used the "Notify" module of DspLink and SysLink before (BIOS required). But I wonder if there is a workaround with Linux and non-BIOS running cores.

Thanks in advance,
Okan

Replies (2)

RE: I - Added by Okan Çalış about 7 years ago

I apologize for the awkward subject; it was meant to be "Interrupts Between Linux and DSP without BIOS", but it looks like I can't modify it.

RE: I - Added by Jonathan Cormier about 7 years ago

Okan Çalış wrote:

I apologize for the awkward subject; it was meant to be "Interrupts Between Linux and DSP without BIOS", but it looks like I can't modify it.

Fixed your title. Unfortunately I don't know about the Linux/DSP interface. Hopefully someone else will have an idea.

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