On Wed, Mar 21, 2007 at 05:31:36PM -0400, [EMAIL PROTECTED] wrote: > Thanks again for the help. I think I better understand how to set > the RX mux. I am now working on the multi_file.py example to > receive using 2 daughterboards on the same USRP. I want to do the > same type of thing using 2 antennas where RX-A and RX-B (on side A) > will receive signal 1's I and Q and RX-A and RX-B (on side B) will > receive signal 2's I and Q. If my understanding is correct, I would > set the mux to (0x32103210). Let me know if this is not correct.
Correct. > My question now comes on the TX side. I don't quite understand how > to set the TX mux. I want to transmit using 2 daughterboards on 1 > USRP so I am using the fm_tx_2_daughterboards.py example. I want > daughterboard 1 to transmit the I (RX-A) and Q (RX-B) of signal 1 > and daughterboard 2 to transmit the I (RX-A) and Q (RX-B) of signal > 2. This example uses the command: > > self.u.set_mux(0xba98) > > which I don't think is right for what I want to do, but I don't > really understand how to set the TX mux in the same way I understand > how to set the RX mux (it seems to be different). How would I set > the TX mux to do what I want? self.u.set_mux(0xba98) ;) It is different, it's the Tx mux, not the Rx mux... /*! * \brief Set output mux configuration. * * <pre> * 3 2 1 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +-------------------------------+-------+-------+-------+-------+ * | | DAC3 | DAC2 | DAC1 | DAC0 | * +-------------------------------+-------+-------+-------+-------+ * * There are two interpolators with complex inputs and outputs. * There are four DACs. * * Each 4-bit DACx field specifies the source for the DAC and * whether or not that DAC is enabled. Each subfield is coded * like this: * * 3 2 1 0 * +-+-----+ * |E| N | * +-+-----+ * * Where E is set if the DAC is enabled, and N specifies which * interpolator output is connected to this DAC. * * N which interp output * --- ------------------- * 0 chan 0 I * 1 chan 0 Q * 2 chan 1 I * 3 chan 1 Q * </pre> */ bool set_mux (int mux); > Thanks > Nick You're welcome! Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
