[Discuss-gnuradio] reading and writing fpga registers

[Roshan Baliga]

Hello Everyone,

I'm trying to read and write the fpga registers using just libusrp 
(sorry Eric!).

(1) My write returns "true", but the read returns 0, regardless of which 
fpga register I read/write to (I've tried a few). For example:

<snip>
if (utx->_write_fpga_reg(FR_ADC_OFFSET_0,0x7777))
<snip>
int readregvalue2 = (utx->_read_fpga_reg(FR_ADC_OFFSET_0));

I must be doing something wrong here.


(2) I believe that the user-defined FPGA registers don't exist in the 
verilog code. Do I need to add them manually? I was going to do that in 
usrp_std.v.  I'm happy to submit a patch if I get things working where 
you can IFDEF the extra registers out if you need the space.

-Roshan