[hpsdr] Starter question

[Bob Cowdery]

> Further down the road we plan 
> to implement the control functions in the FX2 and the FPGA on Ozy.  We've 
> checked the hardware is capable (I've tuned the DDS via Ozy in a bit bang 
> style), but need to do some FX2 microcode and perhaps some FPGA work to get 
> a higher level non bit bang interface similar to the existing SDR 1000 USB 
> adapter.   The SDR 1000 control should not need any additional hardware 
> other than Ozy+Janus.

> Bill

This may be the wrong forum but I have (probably) a dumb question on USB interfaces. I had planned to separate things out in such a way that the control functions and the acqisition of data would be in different processes (OS processes). Then I thought, is it safe to assume that the device will have different interfaces (functions) that can be safely claimed in different processes? I have a feeling the answer is no because it would require the device to be openned more than once or the handle to be opaque so it can be passed between processes. I want to get my architecture right to support the case where everything goes through one device.

Thanks
Bob



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