Hi,
did you add the message port to the .xml file describing the block in
python?
Greetings,
Marcus
On 05.04.2017 00:41, Qurat-Ul-Ann Akbar wrote:
> Hi,
>
> I am trying to add a command port to the OFDM Allocator block in
> GNURadio. The goal is for this command port to take a message every 1
> ms to change the amplitude of the complex pilot symbols. However, I
> can not see the port appearing in GRC.
>
> I just wrote some test code to see if the port is appearing. The
> changes I made are given below:
>
> *1)* I added this line here:
> ofdm_carrier_allocator_cvc_impl::ofdm_carrier_allocator_cvc_impl
> {int fft_len,
> const std::vector<std::vector<int> > &occupied_carriers,
> const std::vector<std::vector<int> > &pilot_carriers,
> const std::vector<std::vector<gr_complex> > &pilot_symbols,
> const std::vector<std::vector<gr_complex> > &sync_words,
> const std::string &len_tag_key,
> const bool output_is_shifted
> ) : tagged_stream_block("ofdm_carrier_allocator_cvc",
> io_signature::make(1, 1, sizeof (gr_complex)),
> io_signature::make(1, 1, sizeof (gr_complex) * fft_len), len_tag_key),
> d_fft_len(fft_len),
> d_occupied_carriers(occupied_carriers),
> d_pilot_carriers(pilot_carriers),
> d_pilot_symbols(pilot_symbols),
> d_sync_words(sync_words),
> d_symbols_per_set(0),
> d_output_is_shifted(output_is_shifted)
> {
> //MY_CHANGES
> *message_port_register_in(pmt::mp("test"));*
> * set_msg_handler(pmt::mp("test"), boost::bind(&mac_impl::test_in,
> this, _1));*
> *
> *
> *
> *
> *2)* And then the function test_in is just a function printing out the
> message "TESTER"
>
> //MY_CHANGES
> *void test_in (pmt::pmt_t msg) {*
> *// this must be a pair*
> *int count = 0;*
> *if (!pmt::is_blob(pmt::cdr(msg))) {*
> *throw std::runtime_error("PMT must be blob");*
> *}*
> *
> *
> *if(pmt::is_symbol(msg)) {*
> *throw std::runtime_error("#############TESTER#########");*
> ***}*
> *}*
> *
> *
> *3) *I uninstalled everything and built again. But I cant see anything
> in the block. I don't see this port at the input of the block.
>
> Can anyone please tell me what am I doing wrong ?
>
>
>
>
>
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