Thanks Karthik, I figured that out too. I am using it in my code. On Sat, Dec 24, 2016 at 1:47 AM, Kartik Patel <[email protected]> wrote:
> Hi Damindra, > > For this problem, we have a better approach. Since, both output ports in > your block are homogeneous (i.e. both types are same) it is preferred to > use *gr.io_signature,* without mentioning *gr.sizeof_gr_complex *twice. > So, the statement would be as follows: > gr.hier_block2.__init__(self, "ofdm_tx", > gr.io_signature(1, 1, gr.sizeof_char), > gr.io_signature(2, 2, gr.sizeof_gr_complex)) > > Do try this. Let me know if there's any problem with this. > > Regards, > Kartik Patel > > > > On Fri, Dec 23, 2016 8:57 PM, Damindra Bandara [email protected] > wrote: > >> Dear Kartik, >> >> Thank you for your response. It solved the problem. >> >> Damindra >> >> On Fri, Dec 23, 2016 at 2:31 AM, Kartik Patel <[email protected]> >> wrote: >> >> Hi Damindra, >> >> The error shows that *gr.io_signature *can take 3 arguments. In your >> case you have added 4 arguments. Now, when we look at some examples of >> *gr.io_signature >> *for python, we can see that the function you are looking for is >> *gr.io_singature2 *(link >> <http://gnuradio.org/doc/doxygen/classgr_1_1io__signature.html#a988c8f0560bb5a73aea3f707ec91e3be>). >> So, the statement would be as follows: >> gr.hier_block2.__init__(self, "ofdm_tx", >> gr.io_signature(1, 1, gr.sizeof_char), >> gr.io_signature2(2, 2, gr.sizeof_gr_complex, >> gr.sizeof_gr_complex)) >> >> This should solve the problem. Let me know if problem still persists. >> >> Also, if there's any other way this problem can be approached, I will >> glad to know it. >> >> Regards, >> Kartik Patel >> >> >> >> On Fri, Dec 23, 2016 3:17 AM, Damindra Bandara [email protected] >> wrote: >> >> Hi, >> >> I am trying to modify OFDM-TX block to get an additional output after the >> payload_mod block(Payload Constellation modulator). I modified the >> ofdm_txrx.py file in /gr-digital/python/digital as follows. >> >> gr.hier_block2.__init__(self, "ofdm_tx", >> gr.io_signature(1, 1, gr.sizeof_char), >> gr.io_signature(1, 2, gr.sizeof_gr_complex,gr.sizeof >> _gr_complex)) >> >> self.connect((payload_mod), (self, 1)) >> >> I also added the following to digital_ofdm_tx.xml as, >> >> <source> >> <name>New out</name> >> <type>complex</type> >> <optional>1</optional> >> </source> >> >> >> After make install I can see the additional output port. But when I try >> to run it I get the following error. >> >> gr.io_signature(1, 2, gr.sizeof_gr_complex,gr.sizeof_gr_complex)) >> TypeError: make() takes exactly 3 arguments (4 given) >> >> >> Could you please let me know whether there are any additional changes >> that I have to do to make this work. >> >> Thank you, >> Damindra >> >> -- >> Damindra Savithri Bandara, >> Ph.D. in Information Technology (Candidate) >> George Mason University, >> Fairfax, >> Virginia >> >> >> >> >> -- >> Damindra Savithri Bandara, >> Ph.D. in Information Technology (Candidate) >> George Mason University, >> Fairfax, >> Virginia >> > -- Damindra Savithri Bandara, Ph.D. in Information Technology (Candidate) George Mason University, Fairfax, Virginia
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