Hi all, I'm not sure about how to read and write PMT ports from and to local variables. I'm going to expose what i'm doing, and if someone can help me i would be very greatful.
I've created an input and an output of PMT type. message_port_register_in(pmt::pmt_t in_threshold) message_port_register_out(pmt::pmt_t out_threshold) Now i want to read the port, and save the data in a local variable, do operations with that variable, and later write it in the output, I create the variables, double d_threshold; pmt::pmt_t target; *I read it, I don't know how to do it. But I suppose:* message_port_sub(pmt::pmt_t <https://gnuradio.org/doc/doxygen/namespacepmt.html#ab4b70d9293452eb74dd07c670e6811fa> in_threshold,pmt::pmt_t <https://gnuradio.org/doc/doxygen/namespacepmt.html#ab4b70d9293452eb74dd07c670e6811fa> target); d_threshold= pmt::to_double <https://gnuradio.org/doc/doxygen/namespacepmt.html#a0f58166fe9f449249f5de7dc7b3ab754> (target); And, I think i can write it as follows: msg=pmt::from_double <https://gnuradio.org/doc/doxygen/namespacepmt.html#ad20c287c509e8470d03d1c8e97fea12d> (d_threshold); message_port_pub(pmt::pmt_t <https://gnuradio.org/doc/doxygen/namespacepmt.html#ab4b70d9293452eb74dd07c670e6811fa> out_threshold,pmt::pmt_t <https://gnuradio.org/doc/doxygen/namespacepmt.html#ab4b70d9293452eb74dd07c670e6811fa> msg); What do you think, i've seen several examples, and they do this, message_port_pub(pmt::mp("symbols"), pmt::cons(pmt::make_dict(), pmt::init_c32vector(48, symbols))); But I don't understand why it is necessary to use pmt::make_dict(). Thanks in advance. Best regards, Cristian
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