I am working with USRP2 under Ubuntu 10.10 with the GNU Radio driver.
I was successful adding some setting registers to the FPGA code and
configuring them with the poke32 method (class usrp2_source_32fc_sptr,
module usrp2). What I am not able to perform is a reading of this
registers using the peek32 method. I have several settings registers
different values but I always get “0” as result of peek32.
I read in the USRP-user mailing list that “none of the registers that
control setting have readback hardware”. Is this assumption also valid
the GNU Radio driver? Is there no way to read back a setting register?