[USRP-users] RFNoC Readback Register

Martin Braun martin.braun at ettus.com
Thu Mar 24 19:27:34 EDT 2016


Michael,

the gr-ettus code doesn't currently have that API call, but it's an easy
thing to add and we can provide a patch pretty soon.

If you have C++ code on the GNU Radio side (like rfnoc_fir_cci*, for
example) it would be easy to add by using the user_reg_read* API calls
in UHD.

Cheers,
Martin

On 03/23/2016 07:38 PM, Michael Wentz via USRP-users wrote:
> Hi,
> 
> I added a readback register to a block I'm working on based on what I
> found in the examples (FIR filter, FFT, etc.). Is there any way I can
> read back the register at some specified interval (or by user
> intervention) while my block is being used in a GNU Radio flowgraph?
> 
> Based on what I saw in rfnoc_fosphor_c_impl (from gr-ettus), I'm
> wondering if I could add a message port and handler to my block that
> would enable me to do a readback when a message is sent to the block
> during runtime. It looks like the fosphor block is using this to set
> registers.
> 
> -Michael
> 
> 
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