Hello, I need to do a direct read and write of the AD9361 registers on the E310. I'd like to just modify one of the C/C++ examples. I have an existing application that uses the AD9361 and need to document the E310 state. Frankly, I am having trouble getting a clean compile, using uhd::usrp or multi_ursp. I can get things via the tree, but I'd like to be able to simply do a peek8 or poke8 and read a register. How to do so? As an example, I can see if the AGC mode is in fast or slow mode with the tree (or the command line 'uhd_usrp_probe --tree .../agc/mode/value') but I'd like to read the AGCConfigX registers (0xFA-FC) in their entirety. I'm sure it's possible, but I have been struggling with how. Thank you for any assistance you can provide. Kevin Tolliver

On 2022-03-11 17:11, Craigs List wrote: > Hello, > > I need to do a direct read and write of the AD9361 registers on the E310. > I'd like to just modify one of the C/C++ examples. I have an existing > application that uses the AD9361 and need to document the E310 state. > > Frankly, I am having trouble getting a clean compile, using uhd::usrp or > multi_ursp.  I can get things via the tree, but I'd like to be able > to simply do a peek8 or poke8 and read a register. How to do so? > > As an example, I can see if the AGC mode is in fast or slow mode with > the tree (or the command line 'uhd_usrp_probe --tree .../agc/mode/value') > but I'd like to read the AGCConfigX registers (0xFA-FC) in their > entirety. > I'm sure it's possible, but I have been struggling with how. > > Thank you for any assistance you can provide. > > Kevin Tolliver > You haven't stated which system image you're running on the E310, but assuming that it is a 3.15 or newer image, the MPM   daemon "owns" the hardware.  My recollection (and it has been a while) is that the AD9361 is controlled out of MPM--so you   can look there for hints about how to "dive below the covers".