On Jan 28, 2008 11:54 PM, Matt Ettus <[EMAIL PROTECTED]> wrote: > Steven Clark wrote: > > I asked the same thing a year or so ago, didn't get much of an answer. > > > > AFAIK, there are no software hooks for the digital I/O pins. What we > > ended up doing was editing the verilog such that the sign of the real > > component sent to the BasicTX dboard came out on 1 I/O pin, and the > > sign of the imag component went to another pin. One pin was data, the > > other clock. We used the Quartus software to generate another .rbf > > file, in other words. Just set the gain of the tx dboard to the min > > and ignore its analog output. This worked fine for us.
I believe Johnathan is currently working on something called gr-gpio, which will hopefully be released soon. It will basically be just this, but it will also include RX. This will allow sending and receiving digital i/o syncronously with the transmitted waveform, at the cost of reducing dynamic range by 1 bit in the I and Q components of the signal. There is a fixed delay involved, which you have to take into account. juha _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
